TypeScript/bin/tsserver.js

/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved. 
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0  
 
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
MERCHANTABLITY OR NON-INFRINGEMENT. 
 
See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */

var ts;
(function (ts) {
    (function (ExitStatus) {
        ExitStatus[ExitStatus["Success"] = 0] = "Success";
        ExitStatus[ExitStatus["DiagnosticsPresent_OutputsSkipped"] = 1] = "DiagnosticsPresent_OutputsSkipped";
        ExitStatus[ExitStatus["DiagnosticsPresent_OutputsGenerated"] = 2] = "DiagnosticsPresent_OutputsGenerated";
    })(ts.ExitStatus || (ts.ExitStatus = {}));
    var ExitStatus = ts.ExitStatus;
    (function (DiagnosticCategory) {
        DiagnosticCategory[DiagnosticCategory["Warning"] = 0] = "Warning";
        DiagnosticCategory[DiagnosticCategory["Error"] = 1] = "Error";
        DiagnosticCategory[DiagnosticCategory["Message"] = 2] = "Message";
    })(ts.DiagnosticCategory || (ts.DiagnosticCategory = {}));
    var DiagnosticCategory = ts.DiagnosticCategory;
})(ts || (ts = {}));
/// <reference path="types.ts"/>
var ts;
(function (ts) {
    function forEach(array, callback) {
        if (array) {
            for (var i = 0, len = array.length; i < len; i++) {
                var result = callback(array[i], i);
                if (result) {
                    return result;
                }
            }
        }
        return undefined;
    }
    ts.forEach = forEach;
    function contains(array, value) {
        if (array) {
            for (var _i = 0; _i < array.length; _i++) {
                var v = array[_i];
                if (v === value) {
                    return true;
                }
            }
        }
        return false;
    }
    ts.contains = contains;
    function indexOf(array, value) {
        if (array) {
            for (var i = 0, len = array.length; i < len; i++) {
                if (array[i] === value) {
                    return i;
                }
            }
        }
        return -1;
    }
    ts.indexOf = indexOf;
    function countWhere(array, predicate) {
        var count = 0;
        if (array) {
            for (var _i = 0; _i < array.length; _i++) {
                var v = array[_i];
                if (predicate(v)) {
                    count++;
                }
            }
        }
        return count;
    }
    ts.countWhere = countWhere;
    function filter(array, f) {
        var result;
        if (array) {
            result = [];
            for (var _i = 0; _i < array.length; _i++) {
                var item = array[_i];
                if (f(item)) {
                    result.push(item);
                }
            }
        }
        return result;
    }
    ts.filter = filter;
    function map(array, f) {
        var result;
        if (array) {
            result = [];
            for (var _i = 0; _i < array.length; _i++) {
                var v = array[_i];
                result.push(f(v));
            }
        }
        return result;
    }
    ts.map = map;
    function concatenate(array1, array2) {
        if (!array2 || !array2.length)
            return array1;
        if (!array1 || !array1.length)
            return array2;
        return array1.concat(array2);
    }
    ts.concatenate = concatenate;
    function deduplicate(array) {
        var result;
        if (array) {
            result = [];
            for (var _i = 0; _i < array.length; _i++) {
                var item = array[_i];
                if (!contains(result, item)) {
                    result.push(item);
                }
            }
        }
        return result;
    }
    ts.deduplicate = deduplicate;
    function sum(array, prop) {
        var result = 0;
        for (var _i = 0; _i < array.length; _i++) {
            var v = array[_i];
            result += v[prop];
        }
        return result;
    }
    ts.sum = sum;
    function addRange(to, from) {
        if (to && from) {
            for (var _i = 0; _i < from.length; _i++) {
                var v = from[_i];
                to.push(v);
            }
        }
    }
    ts.addRange = addRange;
    function lastOrUndefined(array) {
        if (array.length === 0) {
            return undefined;
        }
        return array[array.length - 1];
    }
    ts.lastOrUndefined = lastOrUndefined;
    function binarySearch(array, value) {
        var low = 0;
        var high = array.length - 1;
        while (low <= high) {
            var middle = low + ((high - low) >> 1);
            var midValue = array[middle];
            if (midValue === value) {
                return middle;
            }
            else if (midValue > value) {
                high = middle - 1;
            }
            else {
                low = middle + 1;
            }
        }
        return ~low;
    }
    ts.binarySearch = binarySearch;
    function reduceLeft(array, f, initial) {
        if (array) {
            var count = array.length;
            if (count > 0) {
                var pos = 0;
                var result = arguments.length <= 2 ? array[pos++] : initial;
                while (pos < count) {
                    result = f(result, array[pos++]);
                }
                return result;
            }
        }
        return initial;
    }
    ts.reduceLeft = reduceLeft;
    function reduceRight(array, f, initial) {
        if (array) {
            var pos = array.length - 1;
            if (pos >= 0) {
                var result = arguments.length <= 2 ? array[pos--] : initial;
                while (pos >= 0) {
                    result = f(result, array[pos--]);
                }
                return result;
            }
        }
        return initial;
    }
    ts.reduceRight = reduceRight;
    var hasOwnProperty = Object.prototype.hasOwnProperty;
    function hasProperty(map, key) {
        return hasOwnProperty.call(map, key);
    }
    ts.hasProperty = hasProperty;
    function getProperty(map, key) {
        return hasOwnProperty.call(map, key) ? map[key] : undefined;
    }
    ts.getProperty = getProperty;
    function isEmpty(map) {
        for (var id in map) {
            if (hasProperty(map, id)) {
                return false;
            }
        }
        return true;
    }
    ts.isEmpty = isEmpty;
    function clone(object) {
        var result = {};
        for (var id in object) {
            result[id] = object[id];
        }
        return result;
    }
    ts.clone = clone;
    function extend(first, second) {
        var result = {};
        for (var id in first) {
            result[id] = first[id];
        }
        for (var id in second) {
            if (!hasProperty(result, id)) {
                result[id] = second[id];
            }
        }
        return result;
    }
    ts.extend = extend;
    function forEachValue(map, callback) {
        var result;
        for (var id in map) {
            if (result = callback(map[id]))
                break;
        }
        return result;
    }
    ts.forEachValue = forEachValue;
    function forEachKey(map, callback) {
        var result;
        for (var id in map) {
            if (result = callback(id))
                break;
        }
        return result;
    }
    ts.forEachKey = forEachKey;
    function lookUp(map, key) {
        return hasProperty(map, key) ? map[key] : undefined;
    }
    ts.lookUp = lookUp;
    function copyMap(source, target) {
        for (var p in source) {
            target[p] = source[p];
        }
    }
    ts.copyMap = copyMap;
    function arrayToMap(array, makeKey) {
        var result = {};
        forEach(array, function (value) {
            result[makeKey(value)] = value;
        });
        return result;
    }
    ts.arrayToMap = arrayToMap;
    function memoize(callback) {
        var value;
        return function () {
            if (callback) {
                value = callback();
                callback = undefined;
            }
            return value;
        };
    }
    ts.memoize = memoize;
    function formatStringFromArgs(text, args, baseIndex) {
        baseIndex = baseIndex || 0;
        return text.replace(/{(\d+)}/g, function (match, index) { return args[+index + baseIndex]; });
    }
    ts.localizedDiagnosticMessages = undefined;
    function getLocaleSpecificMessage(message) {
        return ts.localizedDiagnosticMessages && ts.localizedDiagnosticMessages[message]
            ? ts.localizedDiagnosticMessages[message]
            : message;
    }
    ts.getLocaleSpecificMessage = getLocaleSpecificMessage;
    function createFileDiagnostic(file, start, length, message) {
        var end = start + length;
        Debug.assert(start >= 0, "start must be non-negative, is " + start);
        Debug.assert(length >= 0, "length must be non-negative, is " + length);
        Debug.assert(start <= file.text.length, "start must be within the bounds of the file. " + start + " > " + file.text.length);
        Debug.assert(end <= file.text.length, "end must be the bounds of the file. " + end + " > " + file.text.length);
        var text = getLocaleSpecificMessage(message.key);
        if (arguments.length > 4) {
            text = formatStringFromArgs(text, arguments, 4);
        }
        return {
            file: file,
            start: start,
            length: length,
            messageText: text,
            category: message.category,
            code: message.code
        };
    }
    ts.createFileDiagnostic = createFileDiagnostic;
    function createCompilerDiagnostic(message) {
        var text = getLocaleSpecificMessage(message.key);
        if (arguments.length > 1) {
            text = formatStringFromArgs(text, arguments, 1);
        }
        return {
            file: undefined,
            start: undefined,
            length: undefined,
            messageText: text,
            category: message.category,
            code: message.code
        };
    }
    ts.createCompilerDiagnostic = createCompilerDiagnostic;
    function chainDiagnosticMessages(details, message) {
        var text = getLocaleSpecificMessage(message.key);
        if (arguments.length > 2) {
            text = formatStringFromArgs(text, arguments, 2);
        }
        return {
            messageText: text,
            category: message.category,
            code: message.code,
            next: details
        };
    }
    ts.chainDiagnosticMessages = chainDiagnosticMessages;
    function concatenateDiagnosticMessageChains(headChain, tailChain) {
        Debug.assert(!headChain.next);
        headChain.next = tailChain;
        return headChain;
    }
    ts.concatenateDiagnosticMessageChains = concatenateDiagnosticMessageChains;
    function compareValues(a, b) {
        if (a === b)
            return 0;
        if (a === undefined)
            return -1;
        if (b === undefined)
            return 1;
        return a < b ? -1 : 1;
    }
    ts.compareValues = compareValues;
    function getDiagnosticFileName(diagnostic) {
        return diagnostic.file ? diagnostic.file.fileName : undefined;
    }
    function compareDiagnostics(d1, d2) {
        return compareValues(getDiagnosticFileName(d1), getDiagnosticFileName(d2)) ||
            compareValues(d1.start, d2.start) ||
            compareValues(d1.length, d2.length) ||
            compareValues(d1.code, d2.code) ||
            compareMessageText(d1.messageText, d2.messageText) ||
            0;
    }
    ts.compareDiagnostics = compareDiagnostics;
    function compareMessageText(text1, text2) {
        while (text1 && text2) {
            var string1 = typeof text1 === "string" ? text1 : text1.messageText;
            var string2 = typeof text2 === "string" ? text2 : text2.messageText;
            var res = compareValues(string1, string2);
            if (res) {
                return res;
            }
            text1 = typeof text1 === "string" ? undefined : text1.next;
            text2 = typeof text2 === "string" ? undefined : text2.next;
        }
        if (!text1 && !text2) {
            return 0;
        }
        return text1 ? 1 : -1;
    }
    function sortAndDeduplicateDiagnostics(diagnostics) {
        return deduplicateSortedDiagnostics(diagnostics.sort(compareDiagnostics));
    }
    ts.sortAndDeduplicateDiagnostics = sortAndDeduplicateDiagnostics;
    function deduplicateSortedDiagnostics(diagnostics) {
        if (diagnostics.length < 2) {
            return diagnostics;
        }
        var newDiagnostics = [diagnostics[0]];
        var previousDiagnostic = diagnostics[0];
        for (var i = 1; i < diagnostics.length; i++) {
            var currentDiagnostic = diagnostics[i];
            var isDupe = compareDiagnostics(currentDiagnostic, previousDiagnostic) === 0;
            if (!isDupe) {
                newDiagnostics.push(currentDiagnostic);
                previousDiagnostic = currentDiagnostic;
            }
        }
        return newDiagnostics;
    }
    ts.deduplicateSortedDiagnostics = deduplicateSortedDiagnostics;
    function normalizeSlashes(path) {
        return path.replace(/\\/g, "/");
    }
    ts.normalizeSlashes = normalizeSlashes;
    function getRootLength(path) {
        if (path.charCodeAt(0) === 47) {
            if (path.charCodeAt(1) !== 47)
                return 1;
            var p1 = path.indexOf("/", 2);
            if (p1 < 0)
                return 2;
            var p2 = path.indexOf("/", p1 + 1);
            if (p2 < 0)
                return p1 + 1;
            return p2 + 1;
        }
        if (path.charCodeAt(1) === 58) {
            if (path.charCodeAt(2) === 47)
                return 3;
            return 2;
        }
        if (path.lastIndexOf("file:///", 0) === 0) {
            return "file:///".length;
        }
        var idx = path.indexOf('://');
        if (idx !== -1) {
            return idx + "://".length;
        }
        return 0;
    }
    ts.getRootLength = getRootLength;
    ts.directorySeparator = "/";
    function getNormalizedParts(normalizedSlashedPath, rootLength) {
        var parts = normalizedSlashedPath.substr(rootLength).split(ts.directorySeparator);
        var normalized = [];
        for (var _i = 0; _i < parts.length; _i++) {
            var part = parts[_i];
            if (part !== ".") {
                if (part === ".." && normalized.length > 0 && lastOrUndefined(normalized) !== "..") {
                    normalized.pop();
                }
                else {
                    if (part) {
                        normalized.push(part);
                    }
                }
            }
        }
        return normalized;
    }
    function normalizePath(path) {
        path = normalizeSlashes(path);
        var rootLength = getRootLength(path);
        var normalized = getNormalizedParts(path, rootLength);
        return path.substr(0, rootLength) + normalized.join(ts.directorySeparator);
    }
    ts.normalizePath = normalizePath;
    function getDirectoryPath(path) {
        return path.substr(0, Math.max(getRootLength(path), path.lastIndexOf(ts.directorySeparator)));
    }
    ts.getDirectoryPath = getDirectoryPath;
    function isUrl(path) {
        return path && !isRootedDiskPath(path) && path.indexOf("://") !== -1;
    }
    ts.isUrl = isUrl;
    function isRootedDiskPath(path) {
        return getRootLength(path) !== 0;
    }
    ts.isRootedDiskPath = isRootedDiskPath;
    function normalizedPathComponents(path, rootLength) {
        var normalizedParts = getNormalizedParts(path, rootLength);
        return [path.substr(0, rootLength)].concat(normalizedParts);
    }
    function getNormalizedPathComponents(path, currentDirectory) {
        path = normalizeSlashes(path);
        var rootLength = getRootLength(path);
        if (rootLength == 0) {
            path = combinePaths(normalizeSlashes(currentDirectory), path);
            rootLength = getRootLength(path);
        }
        return normalizedPathComponents(path, rootLength);
    }
    ts.getNormalizedPathComponents = getNormalizedPathComponents;
    function getNormalizedAbsolutePath(fileName, currentDirectory) {
        return getNormalizedPathFromPathComponents(getNormalizedPathComponents(fileName, currentDirectory));
    }
    ts.getNormalizedAbsolutePath = getNormalizedAbsolutePath;
    function getNormalizedPathFromPathComponents(pathComponents) {
        if (pathComponents && pathComponents.length) {
            return pathComponents[0] + pathComponents.slice(1).join(ts.directorySeparator);
        }
    }
    ts.getNormalizedPathFromPathComponents = getNormalizedPathFromPathComponents;
    function getNormalizedPathComponentsOfUrl(url) {
        // Get root length of http://www.website.com/folder1/foler2/
        // In this example the root is:  http://www.website.com/ 
        // normalized path components should be ["http://www.website.com/", "folder1", "folder2"]
        var urlLength = url.length;
        var rootLength = url.indexOf("://") + "://".length;
        while (rootLength < urlLength) {
            if (url.charCodeAt(rootLength) === 47) {
                rootLength++;
            }
            else {
                break;
            }
        }
        if (rootLength === urlLength) {
            return [url];
        }
        var indexOfNextSlash = url.indexOf(ts.directorySeparator, rootLength);
        if (indexOfNextSlash !== -1) {
            rootLength = indexOfNextSlash + 1;
            return normalizedPathComponents(url, rootLength);
        }
        else {
            return [url + ts.directorySeparator];
        }
    }
    function getNormalizedPathOrUrlComponents(pathOrUrl, currentDirectory) {
        if (isUrl(pathOrUrl)) {
            return getNormalizedPathComponentsOfUrl(pathOrUrl);
        }
        else {
            return getNormalizedPathComponents(pathOrUrl, currentDirectory);
        }
    }
    function getRelativePathToDirectoryOrUrl(directoryPathOrUrl, relativeOrAbsolutePath, currentDirectory, getCanonicalFileName, isAbsolutePathAnUrl) {
        var pathComponents = getNormalizedPathOrUrlComponents(relativeOrAbsolutePath, currentDirectory);
        var directoryComponents = getNormalizedPathOrUrlComponents(directoryPathOrUrl, currentDirectory);
        if (directoryComponents.length > 1 && lastOrUndefined(directoryComponents) === "") {
            directoryComponents.length--;
        }
        for (var joinStartIndex = 0; joinStartIndex < pathComponents.length && joinStartIndex < directoryComponents.length; joinStartIndex++) {
            if (getCanonicalFileName(directoryComponents[joinStartIndex]) !== getCanonicalFileName(pathComponents[joinStartIndex])) {
                break;
            }
        }
        if (joinStartIndex) {
            var relativePath = "";
            var relativePathComponents = pathComponents.slice(joinStartIndex, pathComponents.length);
            for (; joinStartIndex < directoryComponents.length; joinStartIndex++) {
                if (directoryComponents[joinStartIndex] !== "") {
                    relativePath = relativePath + ".." + ts.directorySeparator;
                }
            }
            return relativePath + relativePathComponents.join(ts.directorySeparator);
        }
        var absolutePath = getNormalizedPathFromPathComponents(pathComponents);
        if (isAbsolutePathAnUrl && isRootedDiskPath(absolutePath)) {
            absolutePath = "file:///" + absolutePath;
        }
        return absolutePath;
    }
    ts.getRelativePathToDirectoryOrUrl = getRelativePathToDirectoryOrUrl;
    function getBaseFileName(path) {
        var i = path.lastIndexOf(ts.directorySeparator);
        return i < 0 ? path : path.substring(i + 1);
    }
    ts.getBaseFileName = getBaseFileName;
    function combinePaths(path1, path2) {
        if (!(path1 && path1.length))
            return path2;
        if (!(path2 && path2.length))
            return path1;
        if (getRootLength(path2) !== 0)
            return path2;
        if (path1.charAt(path1.length - 1) === ts.directorySeparator)
            return path1 + path2;
        return path1 + ts.directorySeparator + path2;
    }
    ts.combinePaths = combinePaths;
    function fileExtensionIs(path, extension) {
        var pathLen = path.length;
        var extLen = extension.length;
        return pathLen > extLen && path.substr(pathLen - extLen, extLen) === extension;
    }
    ts.fileExtensionIs = fileExtensionIs;
    ts.supportedExtensions = [".ts", ".d.ts"];
    var extensionsToRemove = [".d.ts", ".ts", ".js"];
    function removeFileExtension(path) {
        for (var _i = 0; _i < extensionsToRemove.length; _i++) {
            var ext = extensionsToRemove[_i];
            if (fileExtensionIs(path, ext)) {
                return path.substr(0, path.length - ext.length);
            }
        }
        return path;
    }
    ts.removeFileExtension = removeFileExtension;
    var backslashOrDoubleQuote = /[\"\\]/g;
    var escapedCharsRegExp = /[\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g;
    var escapedCharsMap = {
        "\0": "\\0",
        "\t": "\\t",
        "\v": "\\v",
        "\f": "\\f",
        "\b": "\\b",
        "\r": "\\r",
        "\n": "\\n",
        "\\": "\\\\",
        "\"": "\\\"",
        "\u2028": "\\u2028",
        "\u2029": "\\u2029",
        "\u0085": "\\u0085"
    };
    function Symbol(flags, name) {
        this.flags = flags;
        this.name = name;
        this.declarations = undefined;
    }
    function Type(checker, flags) {
        this.flags = flags;
    }
    function Signature(checker) {
    }
    ts.objectAllocator = {
        getNodeConstructor: function (kind) {
            function Node() {
            }
            Node.prototype = {
                kind: kind,
                pos: 0,
                end: 0,
                flags: 0,
                parent: undefined
            };
            return Node;
        },
        getSymbolConstructor: function () { return Symbol; },
        getTypeConstructor: function () { return Type; },
        getSignatureConstructor: function () { return Signature; }
    };
    var Debug;
    (function (Debug) {
        var currentAssertionLevel = 0;
        function shouldAssert(level) {
            return currentAssertionLevel >= level;
        }
        Debug.shouldAssert = shouldAssert;
        function assert(expression, message, verboseDebugInfo) {
            if (!expression) {
                var verboseDebugString = "";
                if (verboseDebugInfo) {
                    verboseDebugString = "\r\nVerbose Debug Information: " + verboseDebugInfo();
                }
                throw new Error("Debug Failure. False expression: " + (message || "") + verboseDebugString);
            }
        }
        Debug.assert = assert;
        function fail(message) {
            Debug.assert(false, message);
        }
        Debug.fail = fail;
    })(Debug = ts.Debug || (ts.Debug = {}));
})(ts || (ts = {}));
/// <reference path="core.ts"/>
var ts;
(function (ts) {
    ts.sys = (function () {
        function getWScriptSystem() {
            var fso = new ActiveXObject("Scripting.FileSystemObject");
            var fileStream = new ActiveXObject("ADODB.Stream");
            fileStream.Type = 2;
            var binaryStream = new ActiveXObject("ADODB.Stream");
            binaryStream.Type = 1;
            var args = [];
            for (var i = 0; i < WScript.Arguments.length; i++) {
                args[i] = WScript.Arguments.Item(i);
            }
            function readFile(fileName, encoding) {
                if (!fso.FileExists(fileName)) {
                    return undefined;
                }
                fileStream.Open();
                try {
                    if (encoding) {
                        fileStream.Charset = encoding;
                        fileStream.LoadFromFile(fileName);
                    }
                    else {
                        fileStream.Charset = "x-ansi";
                        fileStream.LoadFromFile(fileName);
                        var bom = fileStream.ReadText(2) || "";
                        fileStream.Position = 0;
                        fileStream.Charset = bom.length >= 2 && (bom.charCodeAt(0) === 0xFF && bom.charCodeAt(1) === 0xFE || bom.charCodeAt(0) === 0xFE && bom.charCodeAt(1) === 0xFF) ? "unicode" : "utf-8";
                    }
                    return fileStream.ReadText();
                }
                catch (e) {
                    throw e;
                }
                finally {
                    fileStream.Close();
                }
            }
            function writeFile(fileName, data, writeByteOrderMark) {
                fileStream.Open();
                binaryStream.Open();
                try {
                    fileStream.Charset = "utf-8";
                    fileStream.WriteText(data);
                    if (writeByteOrderMark) {
                        fileStream.Position = 0;
                    }
                    else {
                        fileStream.Position = 3;
                    }
                    fileStream.CopyTo(binaryStream);
                    binaryStream.SaveToFile(fileName, 2);
                }
                finally {
                    binaryStream.Close();
                    fileStream.Close();
                }
            }
            function getNames(collection) {
                var result = [];
                for (var e = new Enumerator(collection); !e.atEnd(); e.moveNext()) {
                    result.push(e.item().Name);
                }
                return result.sort();
            }
            function readDirectory(path, extension) {
                var result = [];
                visitDirectory(path);
                return result;
                function visitDirectory(path) {
                    var folder = fso.GetFolder(path || ".");
                    var files = getNames(folder.files);
                    for (var _i = 0; _i < files.length; _i++) {
                        var name_1 = files[_i];
                        if (!extension || ts.fileExtensionIs(name_1, extension)) {
                            result.push(ts.combinePaths(path, name_1));
                        }
                    }
                    var subfolders = getNames(folder.subfolders);
                    for (var _a = 0; _a < subfolders.length; _a++) {
                        var current = subfolders[_a];
                        visitDirectory(ts.combinePaths(path, current));
                    }
                }
            }
            return {
                args: args,
                newLine: "\r\n",
                useCaseSensitiveFileNames: false,
                write: function (s) {
                    WScript.StdOut.Write(s);
                },
                readFile: readFile,
                writeFile: writeFile,
                resolvePath: function (path) {
                    return fso.GetAbsolutePathName(path);
                },
                fileExists: function (path) {
                    return fso.FileExists(path);
                },
                directoryExists: function (path) {
                    return fso.FolderExists(path);
                },
                createDirectory: function (directoryName) {
                    if (!this.directoryExists(directoryName)) {
                        fso.CreateFolder(directoryName);
                    }
                },
                getExecutingFilePath: function () {
                    return WScript.ScriptFullName;
                },
                getCurrentDirectory: function () {
                    return new ActiveXObject("WScript.Shell").CurrentDirectory;
                },
                readDirectory: readDirectory,
                exit: function (exitCode) {
                    try {
                        WScript.Quit(exitCode);
                    }
                    catch (e) {
                    }
                }
            };
        }
        function getNodeSystem() {
            var _fs = require("fs");
            var _path = require("path");
            var _os = require('os');
            var platform = _os.platform();
            var useCaseSensitiveFileNames = platform !== "win32" && platform !== "win64" && platform !== "darwin";
            function readFile(fileName, encoding) {
                if (!_fs.existsSync(fileName)) {
                    return undefined;
                }
                var buffer = _fs.readFileSync(fileName);
                var len = buffer.length;
                if (len >= 2 && buffer[0] === 0xFE && buffer[1] === 0xFF) {
                    len &= ~1;
                    for (var i = 0; i < len; i += 2) {
                        var temp = buffer[i];
                        buffer[i] = buffer[i + 1];
                        buffer[i + 1] = temp;
                    }
                    return buffer.toString("utf16le", 2);
                }
                if (len >= 2 && buffer[0] === 0xFF && buffer[1] === 0xFE) {
                    return buffer.toString("utf16le", 2);
                }
                if (len >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
                    return buffer.toString("utf8", 3);
                }
                return buffer.toString("utf8");
            }
            function writeFile(fileName, data, writeByteOrderMark) {
                if (writeByteOrderMark) {
                    data = '\uFEFF' + data;
                }
                _fs.writeFileSync(fileName, data, "utf8");
            }
            function readDirectory(path, extension) {
                var result = [];
                visitDirectory(path);
                return result;
                function visitDirectory(path) {
                    var files = _fs.readdirSync(path || ".").sort();
                    var directories = [];
                    for (var _i = 0; _i < files.length; _i++) {
                        var current = files[_i];
                        var name = ts.combinePaths(path, current);
                        var stat = _fs.lstatSync(name);
                        if (stat.isFile()) {
                            if (!extension || ts.fileExtensionIs(name, extension)) {
                                result.push(name);
                            }
                        }
                        else if (stat.isDirectory()) {
                            directories.push(name);
                        }
                    }
                    for (var _a = 0; _a < directories.length; _a++) {
                        var current = directories[_a];
                        visitDirectory(current);
                    }
                }
            }
            return {
                args: process.argv.slice(2),
                newLine: _os.EOL,
                useCaseSensitiveFileNames: useCaseSensitiveFileNames,
                write: function (s) {
                    _fs.writeSync(1, s);
                },
                readFile: readFile,
                writeFile: writeFile,
                watchFile: function (fileName, callback) {
                    _fs.watchFile(fileName, { persistent: true, interval: 250 }, fileChanged);
                    return {
                        close: function () { _fs.unwatchFile(fileName, fileChanged); }
                    };
                    function fileChanged(curr, prev) {
                        if (+curr.mtime <= +prev.mtime) {
                            return;
                        }
                        callback(fileName);
                    }
                    ;
                },
                resolvePath: function (path) {
                    return _path.resolve(path);
                },
                fileExists: function (path) {
                    return _fs.existsSync(path);
                },
                directoryExists: function (path) {
                    return _fs.existsSync(path) && _fs.statSync(path).isDirectory();
                },
                createDirectory: function (directoryName) {
                    if (!this.directoryExists(directoryName)) {
                        _fs.mkdirSync(directoryName);
                    }
                },
                getExecutingFilePath: function () {
                    return __filename;
                },
                getCurrentDirectory: function () {
                    return process.cwd();
                },
                readDirectory: readDirectory,
                getMemoryUsage: function () {
                    if (global.gc) {
                        global.gc();
                    }
                    return process.memoryUsage().heapUsed;
                },
                exit: function (exitCode) {
                    process.exit(exitCode);
                }
            };
        }
        if (typeof WScript !== "undefined" && typeof ActiveXObject === "function") {
            return getWScriptSystem();
        }
        else if (typeof module !== "undefined" && module.exports) {
            return getNodeSystem();
        }
        else {
            return undefined;
        }
    })();
})(ts || (ts = {}));
/// <reference path="types.ts" />
var ts;
(function (ts) {
    ts.Diagnostics = {
        Unterminated_string_literal: { code: 1002, category: ts.DiagnosticCategory.Error, key: "Unterminated string literal." },
        Identifier_expected: { code: 1003, category: ts.DiagnosticCategory.Error, key: "Identifier expected." },
        _0_expected: { code: 1005, category: ts.DiagnosticCategory.Error, key: "'{0}' expected." },
        A_file_cannot_have_a_reference_to_itself: { code: 1006, category: ts.DiagnosticCategory.Error, key: "A file cannot have a reference to itself." },
        Trailing_comma_not_allowed: { code: 1009, category: ts.DiagnosticCategory.Error, key: "Trailing comma not allowed." },
        Asterisk_Slash_expected: { code: 1010, category: ts.DiagnosticCategory.Error, key: "'*/' expected." },
        Unexpected_token: { code: 1012, category: ts.DiagnosticCategory.Error, key: "Unexpected token." },
        A_rest_parameter_must_be_last_in_a_parameter_list: { code: 1014, category: ts.DiagnosticCategory.Error, key: "A rest parameter must be last in a parameter list." },
        Parameter_cannot_have_question_mark_and_initializer: { code: 1015, category: ts.DiagnosticCategory.Error, key: "Parameter cannot have question mark and initializer." },
        A_required_parameter_cannot_follow_an_optional_parameter: { code: 1016, category: ts.DiagnosticCategory.Error, key: "A required parameter cannot follow an optional parameter." },
        An_index_signature_cannot_have_a_rest_parameter: { code: 1017, category: ts.DiagnosticCategory.Error, key: "An index signature cannot have a rest parameter." },
        An_index_signature_parameter_cannot_have_an_accessibility_modifier: { code: 1018, category: ts.DiagnosticCategory.Error, key: "An index signature parameter cannot have an accessibility modifier." },
        An_index_signature_parameter_cannot_have_a_question_mark: { code: 1019, category: ts.DiagnosticCategory.Error, key: "An index signature parameter cannot have a question mark." },
        An_index_signature_parameter_cannot_have_an_initializer: { code: 1020, category: ts.DiagnosticCategory.Error, key: "An index signature parameter cannot have an initializer." },
        An_index_signature_must_have_a_type_annotation: { code: 1021, category: ts.DiagnosticCategory.Error, key: "An index signature must have a type annotation." },
        An_index_signature_parameter_must_have_a_type_annotation: { code: 1022, category: ts.DiagnosticCategory.Error, key: "An index signature parameter must have a type annotation." },
        An_index_signature_parameter_type_must_be_string_or_number: { code: 1023, category: ts.DiagnosticCategory.Error, key: "An index signature parameter type must be 'string' or 'number'." },
        A_class_or_interface_declaration_can_only_have_one_extends_clause: { code: 1024, category: ts.DiagnosticCategory.Error, key: "A class or interface declaration can only have one 'extends' clause." },
        An_extends_clause_must_precede_an_implements_clause: { code: 1025, category: ts.DiagnosticCategory.Error, key: "An 'extends' clause must precede an 'implements' clause." },
        A_class_can_only_extend_a_single_class: { code: 1026, category: ts.DiagnosticCategory.Error, key: "A class can only extend a single class." },
        A_class_declaration_can_only_have_one_implements_clause: { code: 1027, category: ts.DiagnosticCategory.Error, key: "A class declaration can only have one 'implements' clause." },
        Accessibility_modifier_already_seen: { code: 1028, category: ts.DiagnosticCategory.Error, key: "Accessibility modifier already seen." },
        _0_modifier_must_precede_1_modifier: { code: 1029, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier must precede '{1}' modifier." },
        _0_modifier_already_seen: { code: 1030, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier already seen." },
        _0_modifier_cannot_appear_on_a_class_element: { code: 1031, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a class element." },
        An_interface_declaration_cannot_have_an_implements_clause: { code: 1032, category: ts.DiagnosticCategory.Error, key: "An interface declaration cannot have an 'implements' clause." },
        super_must_be_followed_by_an_argument_list_or_member_access: { code: 1034, category: ts.DiagnosticCategory.Error, key: "'super' must be followed by an argument list or member access." },
        Only_ambient_modules_can_use_quoted_names: { code: 1035, category: ts.DiagnosticCategory.Error, key: "Only ambient modules can use quoted names." },
        Statements_are_not_allowed_in_ambient_contexts: { code: 1036, category: ts.DiagnosticCategory.Error, key: "Statements are not allowed in ambient contexts." },
        A_declare_modifier_cannot_be_used_in_an_already_ambient_context: { code: 1038, category: ts.DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used in an already ambient context." },
        Initializers_are_not_allowed_in_ambient_contexts: { code: 1039, category: ts.DiagnosticCategory.Error, key: "Initializers are not allowed in ambient contexts." },
        _0_modifier_cannot_appear_on_a_module_element: { code: 1044, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a module element." },
        A_declare_modifier_cannot_be_used_with_an_interface_declaration: { code: 1045, category: ts.DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used with an interface declaration." },
        A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file: { code: 1046, category: ts.DiagnosticCategory.Error, key: "A 'declare' modifier is required for a top level declaration in a .d.ts file." },
        A_rest_parameter_cannot_be_optional: { code: 1047, category: ts.DiagnosticCategory.Error, key: "A rest parameter cannot be optional." },
        A_rest_parameter_cannot_have_an_initializer: { code: 1048, category: ts.DiagnosticCategory.Error, key: "A rest parameter cannot have an initializer." },
        A_set_accessor_must_have_exactly_one_parameter: { code: 1049, category: ts.DiagnosticCategory.Error, key: "A 'set' accessor must have exactly one parameter." },
        A_set_accessor_cannot_have_an_optional_parameter: { code: 1051, category: ts.DiagnosticCategory.Error, key: "A 'set' accessor cannot have an optional parameter." },
        A_set_accessor_parameter_cannot_have_an_initializer: { code: 1052, category: ts.DiagnosticCategory.Error, key: "A 'set' accessor parameter cannot have an initializer." },
        A_set_accessor_cannot_have_rest_parameter: { code: 1053, category: ts.DiagnosticCategory.Error, key: "A 'set' accessor cannot have rest parameter." },
        A_get_accessor_cannot_have_parameters: { code: 1054, category: ts.DiagnosticCategory.Error, key: "A 'get' accessor cannot have parameters." },
        Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher: { code: 1056, category: ts.DiagnosticCategory.Error, key: "Accessors are only available when targeting ECMAScript 5 and higher." },
        Enum_member_must_have_initializer: { code: 1061, category: ts.DiagnosticCategory.Error, key: "Enum member must have initializer." },
        An_export_assignment_cannot_be_used_in_a_namespace: { code: 1063, category: ts.DiagnosticCategory.Error, key: "An export assignment cannot be used in a namespace." },
        Ambient_enum_elements_can_only_have_integer_literal_initializers: { code: 1066, category: ts.DiagnosticCategory.Error, key: "Ambient enum elements can only have integer literal initializers." },
        Unexpected_token_A_constructor_method_accessor_or_property_was_expected: { code: 1068, category: ts.DiagnosticCategory.Error, key: "Unexpected token. A constructor, method, accessor, or property was expected." },
        A_declare_modifier_cannot_be_used_with_an_import_declaration: { code: 1079, category: ts.DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used with an import declaration." },
        Invalid_reference_directive_syntax: { code: 1084, category: ts.DiagnosticCategory.Error, key: "Invalid 'reference' directive syntax." },
        Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher: { code: 1085, category: ts.DiagnosticCategory.Error, key: "Octal literals are not available when targeting ECMAScript 5 and higher." },
        An_accessor_cannot_be_declared_in_an_ambient_context: { code: 1086, category: ts.DiagnosticCategory.Error, key: "An accessor cannot be declared in an ambient context." },
        _0_modifier_cannot_appear_on_a_constructor_declaration: { code: 1089, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a constructor declaration." },
        _0_modifier_cannot_appear_on_a_parameter: { code: 1090, category: ts.DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a parameter." },
        Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement: { code: 1091, category: ts.DiagnosticCategory.Error, key: "Only a single variable declaration is allowed in a 'for...in' statement." },
        Type_parameters_cannot_appear_on_a_constructor_declaration: { code: 1092, category: ts.DiagnosticCategory.Error, key: "Type parameters cannot appear on a constructor declaration." },
        Type_annotation_cannot_appear_on_a_constructor_declaration: { code: 1093, category: ts.DiagnosticCategory.Error, key: "Type annotation cannot appear on a constructor declaration." },
        An_accessor_cannot_have_type_parameters: { code: 1094, category: ts.DiagnosticCategory.Error, key: "An accessor cannot have type parameters." },
        A_set_accessor_cannot_have_a_return_type_annotation: { code: 1095, category: ts.DiagnosticCategory.Error, key: "A 'set' accessor cannot have a return type annotation." },
        An_index_signature_must_have_exactly_one_parameter: { code: 1096, category: ts.DiagnosticCategory.Error, key: "An index signature must have exactly one parameter." },
        _0_list_cannot_be_empty: { code: 1097, category: ts.DiagnosticCategory.Error, key: "'{0}' list cannot be empty." },
        Type_parameter_list_cannot_be_empty: { code: 1098, category: ts.DiagnosticCategory.Error, key: "Type parameter list cannot be empty." },
        Type_argument_list_cannot_be_empty: { code: 1099, category: ts.DiagnosticCategory.Error, key: "Type argument list cannot be empty." },
        Invalid_use_of_0_in_strict_mode: { code: 1100, category: ts.DiagnosticCategory.Error, key: "Invalid use of '{0}' in strict mode." },
        with_statements_are_not_allowed_in_strict_mode: { code: 1101, category: ts.DiagnosticCategory.Error, key: "'with' statements are not allowed in strict mode." },
        delete_cannot_be_called_on_an_identifier_in_strict_mode: { code: 1102, category: ts.DiagnosticCategory.Error, key: "'delete' cannot be called on an identifier in strict mode." },
        A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement: { code: 1104, category: ts.DiagnosticCategory.Error, key: "A 'continue' statement can only be used within an enclosing iteration statement." },
        A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement: { code: 1105, category: ts.DiagnosticCategory.Error, key: "A 'break' statement can only be used within an enclosing iteration or switch statement." },
        Jump_target_cannot_cross_function_boundary: { code: 1107, category: ts.DiagnosticCategory.Error, key: "Jump target cannot cross function boundary." },
        A_return_statement_can_only_be_used_within_a_function_body: { code: 1108, category: ts.DiagnosticCategory.Error, key: "A 'return' statement can only be used within a function body." },
        Expression_expected: { code: 1109, category: ts.DiagnosticCategory.Error, key: "Expression expected." },
        Type_expected: { code: 1110, category: ts.DiagnosticCategory.Error, key: "Type expected." },
        A_class_member_cannot_be_declared_optional: { code: 1112, category: ts.DiagnosticCategory.Error, key: "A class member cannot be declared optional." },
        A_default_clause_cannot_appear_more_than_once_in_a_switch_statement: { code: 1113, category: ts.DiagnosticCategory.Error, key: "A 'default' clause cannot appear more than once in a 'switch' statement." },
        Duplicate_label_0: { code: 1114, category: ts.DiagnosticCategory.Error, key: "Duplicate label '{0}'" },
        A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement: { code: 1115, category: ts.DiagnosticCategory.Error, key: "A 'continue' statement can only jump to a label of an enclosing iteration statement." },
        A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement: { code: 1116, category: ts.DiagnosticCategory.Error, key: "A 'break' statement can only jump to a label of an enclosing statement." },
        An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode: { code: 1117, category: ts.DiagnosticCategory.Error, key: "An object literal cannot have multiple properties with the same name in strict mode." },
        An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name: { code: 1118, category: ts.DiagnosticCategory.Error, key: "An object literal cannot have multiple get/set accessors with the same name." },
        An_object_literal_cannot_have_property_and_accessor_with_the_same_name: { code: 1119, category: ts.DiagnosticCategory.Error, key: "An object literal cannot have property and accessor with the same name." },
        An_export_assignment_cannot_have_modifiers: { code: 1120, category: ts.DiagnosticCategory.Error, key: "An export assignment cannot have modifiers." },
        Octal_literals_are_not_allowed_in_strict_mode: { code: 1121, category: ts.DiagnosticCategory.Error, key: "Octal literals are not allowed in strict mode." },
        A_tuple_type_element_list_cannot_be_empty: { code: 1122, category: ts.DiagnosticCategory.Error, key: "A tuple type element list cannot be empty." },
        Variable_declaration_list_cannot_be_empty: { code: 1123, category: ts.DiagnosticCategory.Error, key: "Variable declaration list cannot be empty." },
        Digit_expected: { code: 1124, category: ts.DiagnosticCategory.Error, key: "Digit expected." },
        Hexadecimal_digit_expected: { code: 1125, category: ts.DiagnosticCategory.Error, key: "Hexadecimal digit expected." },
        Unexpected_end_of_text: { code: 1126, category: ts.DiagnosticCategory.Error, key: "Unexpected end of text." },
        Invalid_character: { code: 1127, category: ts.DiagnosticCategory.Error, key: "Invalid character." },
        Declaration_or_statement_expected: { code: 1128, category: ts.DiagnosticCategory.Error, key: "Declaration or statement expected." },
        Statement_expected: { code: 1129, category: ts.DiagnosticCategory.Error, key: "Statement expected." },
        case_or_default_expected: { code: 1130, category: ts.DiagnosticCategory.Error, key: "'case' or 'default' expected." },
        Property_or_signature_expected: { code: 1131, category: ts.DiagnosticCategory.Error, key: "Property or signature expected." },
        Enum_member_expected: { code: 1132, category: ts.DiagnosticCategory.Error, key: "Enum member expected." },
        Type_reference_expected: { code: 1133, category: ts.DiagnosticCategory.Error, key: "Type reference expected." },
        Variable_declaration_expected: { code: 1134, category: ts.DiagnosticCategory.Error, key: "Variable declaration expected." },
        Argument_expression_expected: { code: 1135, category: ts.DiagnosticCategory.Error, key: "Argument expression expected." },
        Property_assignment_expected: { code: 1136, category: ts.DiagnosticCategory.Error, key: "Property assignment expected." },
        Expression_or_comma_expected: { code: 1137, category: ts.DiagnosticCategory.Error, key: "Expression or comma expected." },
        Parameter_declaration_expected: { code: 1138, category: ts.DiagnosticCategory.Error, key: "Parameter declaration expected." },
        Type_parameter_declaration_expected: { code: 1139, category: ts.DiagnosticCategory.Error, key: "Type parameter declaration expected." },
        Type_argument_expected: { code: 1140, category: ts.DiagnosticCategory.Error, key: "Type argument expected." },
        String_literal_expected: { code: 1141, category: ts.DiagnosticCategory.Error, key: "String literal expected." },
        Line_break_not_permitted_here: { code: 1142, category: ts.DiagnosticCategory.Error, key: "Line break not permitted here." },
        or_expected: { code: 1144, category: ts.DiagnosticCategory.Error, key: "'{' or ';' expected." },
        Modifiers_not_permitted_on_index_signature_members: { code: 1145, category: ts.DiagnosticCategory.Error, key: "Modifiers not permitted on index signature members." },
        Declaration_expected: { code: 1146, category: ts.DiagnosticCategory.Error, key: "Declaration expected." },
        Import_declarations_in_a_namespace_cannot_reference_a_module: { code: 1147, category: ts.DiagnosticCategory.Error, key: "Import declarations in a namespace cannot reference a module." },
        Cannot_compile_modules_unless_the_module_flag_is_provided: { code: 1148, category: ts.DiagnosticCategory.Error, key: "Cannot compile modules unless the '--module' flag is provided." },
        File_name_0_differs_from_already_included_file_name_1_only_in_casing: { code: 1149, category: ts.DiagnosticCategory.Error, key: "File name '{0}' differs from already included file name '{1}' only in casing" },
        new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead: { code: 1150, category: ts.DiagnosticCategory.Error, key: "'new T[]' cannot be used to create an array. Use 'new Array<T>()' instead." },
        var_let_or_const_expected: { code: 1152, category: ts.DiagnosticCategory.Error, key: "'var', 'let' or 'const' expected." },
        let_declarations_are_only_available_when_targeting_ECMAScript_6_and_higher: { code: 1153, category: ts.DiagnosticCategory.Error, key: "'let' declarations are only available when targeting ECMAScript 6 and higher." },
        const_declarations_are_only_available_when_targeting_ECMAScript_6_and_higher: { code: 1154, category: ts.DiagnosticCategory.Error, key: "'const' declarations are only available when targeting ECMAScript 6 and higher." },
        const_declarations_must_be_initialized: { code: 1155, category: ts.DiagnosticCategory.Error, key: "'const' declarations must be initialized" },
        const_declarations_can_only_be_declared_inside_a_block: { code: 1156, category: ts.DiagnosticCategory.Error, key: "'const' declarations can only be declared inside a block." },
        let_declarations_can_only_be_declared_inside_a_block: { code: 1157, category: ts.DiagnosticCategory.Error, key: "'let' declarations can only be declared inside a block." },
        Unterminated_template_literal: { code: 1160, category: ts.DiagnosticCategory.Error, key: "Unterminated template literal." },
        Unterminated_regular_expression_literal: { code: 1161, category: ts.DiagnosticCategory.Error, key: "Unterminated regular expression literal." },
        An_object_member_cannot_be_declared_optional: { code: 1162, category: ts.DiagnosticCategory.Error, key: "An object member cannot be declared optional." },
        yield_expression_must_be_contained_within_a_generator_declaration: { code: 1163, category: ts.DiagnosticCategory.Error, key: "'yield' expression must be contained_within a generator declaration." },
        Computed_property_names_are_not_allowed_in_enums: { code: 1164, category: ts.DiagnosticCategory.Error, key: "Computed property names are not allowed in enums." },
        A_computed_property_name_in_an_ambient_context_must_directly_refer_to_a_built_in_symbol: { code: 1165, category: ts.DiagnosticCategory.Error, key: "A computed property name in an ambient context must directly refer to a built-in symbol." },
        A_computed_property_name_in_a_class_property_declaration_must_directly_refer_to_a_built_in_symbol: { code: 1166, category: ts.DiagnosticCategory.Error, key: "A computed property name in a class property declaration must directly refer to a built-in symbol." },
        Computed_property_names_are_only_available_when_targeting_ECMAScript_6_and_higher: { code: 1167, category: ts.DiagnosticCategory.Error, key: "Computed property names are only available when targeting ECMAScript 6 and higher." },
        A_computed_property_name_in_a_method_overload_must_directly_refer_to_a_built_in_symbol: { code: 1168, category: ts.DiagnosticCategory.Error, key: "A computed property name in a method overload must directly refer to a built-in symbol." },
        A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol: { code: 1169, category: ts.DiagnosticCategory.Error, key: "A computed property name in an interface must directly refer to a built-in symbol." },
        A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol: { code: 1170, category: ts.DiagnosticCategory.Error, key: "A computed property name in a type literal must directly refer to a built-in symbol." },
        A_comma_expression_is_not_allowed_in_a_computed_property_name: { code: 1171, category: ts.DiagnosticCategory.Error, key: "A comma expression is not allowed in a computed property name." },
        extends_clause_already_seen: { code: 1172, category: ts.DiagnosticCategory.Error, key: "'extends' clause already seen." },
        extends_clause_must_precede_implements_clause: { code: 1173, category: ts.DiagnosticCategory.Error, key: "'extends' clause must precede 'implements' clause." },
        Classes_can_only_extend_a_single_class: { code: 1174, category: ts.DiagnosticCategory.Error, key: "Classes can only extend a single class." },
        implements_clause_already_seen: { code: 1175, category: ts.DiagnosticCategory.Error, key: "'implements' clause already seen." },
        Interface_declaration_cannot_have_implements_clause: { code: 1176, category: ts.DiagnosticCategory.Error, key: "Interface declaration cannot have 'implements' clause." },
        Binary_digit_expected: { code: 1177, category: ts.DiagnosticCategory.Error, key: "Binary digit expected." },
        Octal_digit_expected: { code: 1178, category: ts.DiagnosticCategory.Error, key: "Octal digit expected." },
        Unexpected_token_expected: { code: 1179, category: ts.DiagnosticCategory.Error, key: "Unexpected token. '{' expected." },
        Property_destructuring_pattern_expected: { code: 1180, category: ts.DiagnosticCategory.Error, key: "Property destructuring pattern expected." },
        Array_element_destructuring_pattern_expected: { code: 1181, category: ts.DiagnosticCategory.Error, key: "Array element destructuring pattern expected." },
        A_destructuring_declaration_must_have_an_initializer: { code: 1182, category: ts.DiagnosticCategory.Error, key: "A destructuring declaration must have an initializer." },
        Destructuring_declarations_are_not_allowed_in_ambient_contexts: { code: 1183, category: ts.DiagnosticCategory.Error, key: "Destructuring declarations are not allowed in ambient contexts." },
        An_implementation_cannot_be_declared_in_ambient_contexts: { code: 1184, category: ts.DiagnosticCategory.Error, key: "An implementation cannot be declared in ambient contexts." },
        Modifiers_cannot_appear_here: { code: 1184, category: ts.DiagnosticCategory.Error, key: "Modifiers cannot appear here." },
        Merge_conflict_marker_encountered: { code: 1185, category: ts.DiagnosticCategory.Error, key: "Merge conflict marker encountered." },
        A_rest_element_cannot_have_an_initializer: { code: 1186, category: ts.DiagnosticCategory.Error, key: "A rest element cannot have an initializer." },
        A_parameter_property_may_not_be_a_binding_pattern: { code: 1187, category: ts.DiagnosticCategory.Error, key: "A parameter property may not be a binding pattern." },
        Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement: { code: 1188, category: ts.DiagnosticCategory.Error, key: "Only a single variable declaration is allowed in a 'for...of' statement." },
        The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer: { code: 1189, category: ts.DiagnosticCategory.Error, key: "The variable declaration of a 'for...in' statement cannot have an initializer." },
        The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer: { code: 1190, category: ts.DiagnosticCategory.Error, key: "The variable declaration of a 'for...of' statement cannot have an initializer." },
        An_import_declaration_cannot_have_modifiers: { code: 1191, category: ts.DiagnosticCategory.Error, key: "An import declaration cannot have modifiers." },
        Module_0_has_no_default_export: { code: 1192, category: ts.DiagnosticCategory.Error, key: "Module '{0}' has no default export." },
        An_export_declaration_cannot_have_modifiers: { code: 1193, category: ts.DiagnosticCategory.Error, key: "An export declaration cannot have modifiers." },
        Export_declarations_are_not_permitted_in_a_namespace: { code: 1194, category: ts.DiagnosticCategory.Error, key: "Export declarations are not permitted in a namespace." },
        Catch_clause_variable_name_must_be_an_identifier: { code: 1195, category: ts.DiagnosticCategory.Error, key: "Catch clause variable name must be an identifier." },
        Catch_clause_variable_cannot_have_a_type_annotation: { code: 1196, category: ts.DiagnosticCategory.Error, key: "Catch clause variable cannot have a type annotation." },
        Catch_clause_variable_cannot_have_an_initializer: { code: 1197, category: ts.DiagnosticCategory.Error, key: "Catch clause variable cannot have an initializer." },
        An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive: { code: 1198, category: ts.DiagnosticCategory.Error, key: "An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive." },
        Unterminated_Unicode_escape_sequence: { code: 1199, category: ts.DiagnosticCategory.Error, key: "Unterminated Unicode escape sequence." },
        Line_terminator_not_permitted_before_arrow: { code: 1200, category: ts.DiagnosticCategory.Error, key: "Line terminator not permitted before arrow." },
        Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_or_import_d_from_mod_instead: { code: 1202, category: ts.DiagnosticCategory.Error, key: "Import assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'import * as ns from \"mod\"', 'import {a} from \"mod\"' or 'import d from \"mod\"' instead." },
        Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_export_default_instead: { code: 1203, category: ts.DiagnosticCategory.Error, key: "Export assignment cannot be used when targeting ECMAScript 6 or higher. Consider using 'export default' instead." },
        Cannot_compile_modules_into_commonjs_amd_system_or_umd_when_targeting_ES6_or_higher: { code: 1204, category: ts.DiagnosticCategory.Error, key: "Cannot compile modules into 'commonjs', 'amd', 'system' or 'umd' when targeting 'ES6' or higher." },
        Decorators_are_only_available_when_targeting_ECMAScript_5_and_higher: { code: 1205, category: ts.DiagnosticCategory.Error, key: "Decorators are only available when targeting ECMAScript 5 and higher." },
        Decorators_are_not_valid_here: { code: 1206, category: ts.DiagnosticCategory.Error, key: "Decorators are not valid here." },
        Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name: { code: 1207, category: ts.DiagnosticCategory.Error, key: "Decorators cannot be applied to multiple get/set accessors of the same name." },
        Cannot_compile_namespaces_when_the_separateCompilation_flag_is_provided: { code: 1208, category: ts.DiagnosticCategory.Error, key: "Cannot compile namespaces when the '--separateCompilation' flag is provided." },
        Ambient_const_enums_are_not_allowed_when_the_separateCompilation_flag_is_provided: { code: 1209, category: ts.DiagnosticCategory.Error, key: "Ambient const enums are not allowed when the '--separateCompilation' flag is provided." },
        Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode: { code: 1210, category: ts.DiagnosticCategory.Error, key: "Invalid use of '{0}'. Class definitions are automatically in strict mode." },
        A_class_declaration_without_the_default_modifier_must_have_a_name: { code: 1211, category: ts.DiagnosticCategory.Error, key: "A class declaration without the 'default' modifier must have a name" },
        Identifier_expected_0_is_a_reserved_word_in_strict_mode: { code: 1212, category: ts.DiagnosticCategory.Error, key: "Identifier expected. '{0}' is a reserved word in strict mode" },
        Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode: { code: 1213, category: ts.DiagnosticCategory.Error, key: "Identifier expected. '{0}' is a reserved word in strict mode. Class definitions are automatically in strict mode." },
        Type_expected_0_is_a_reserved_word_in_strict_mode: { code: 1215, category: ts.DiagnosticCategory.Error, key: "Type expected. '{0}' is a reserved word in strict mode" },
        Type_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode: { code: 1216, category: ts.DiagnosticCategory.Error, key: "Type expected. '{0}' is a reserved word in strict mode. Class definitions are automatically in strict mode." },
        Export_assignment_is_not_supported_when_module_flag_is_system: { code: 1218, category: ts.DiagnosticCategory.Error, key: "Export assignment is not supported when '--module' flag is 'system'." },
        Duplicate_identifier_0: { code: 2300, category: ts.DiagnosticCategory.Error, key: "Duplicate identifier '{0}'." },
        Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor: { code: 2301, category: ts.DiagnosticCategory.Error, key: "Initializer of instance member variable '{0}' cannot reference identifier '{1}' declared in the constructor." },
        Static_members_cannot_reference_class_type_parameters: { code: 2302, category: ts.DiagnosticCategory.Error, key: "Static members cannot reference class type parameters." },
        Circular_definition_of_import_alias_0: { code: 2303, category: ts.DiagnosticCategory.Error, key: "Circular definition of import alias '{0}'." },
        Cannot_find_name_0: { code: 2304, category: ts.DiagnosticCategory.Error, key: "Cannot find name '{0}'." },
        Module_0_has_no_exported_member_1: { code: 2305, category: ts.DiagnosticCategory.Error, key: "Module '{0}' has no exported member '{1}'." },
        File_0_is_not_a_module: { code: 2306, category: ts.DiagnosticCategory.Error, key: "File '{0}' is not a module." },
        Cannot_find_module_0: { code: 2307, category: ts.DiagnosticCategory.Error, key: "Cannot find module '{0}'." },
        A_module_cannot_have_more_than_one_export_assignment: { code: 2308, category: ts.DiagnosticCategory.Error, key: "A module cannot have more than one export assignment." },
        An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements: { code: 2309, category: ts.DiagnosticCategory.Error, key: "An export assignment cannot be used in a module with other exported elements." },
        Type_0_recursively_references_itself_as_a_base_type: { code: 2310, category: ts.DiagnosticCategory.Error, key: "Type '{0}' recursively references itself as a base type." },
        A_class_may_only_extend_another_class: { code: 2311, category: ts.DiagnosticCategory.Error, key: "A class may only extend another class." },
        An_interface_may_only_extend_a_class_or_another_interface: { code: 2312, category: ts.DiagnosticCategory.Error, key: "An interface may only extend a class or another interface." },
        Constraint_of_a_type_parameter_cannot_reference_any_type_parameter_from_the_same_type_parameter_list: { code: 2313, category: ts.DiagnosticCategory.Error, key: "Constraint of a type parameter cannot reference any type parameter from the same type parameter list." },
        Generic_type_0_requires_1_type_argument_s: { code: 2314, category: ts.DiagnosticCategory.Error, key: "Generic type '{0}' requires {1} type argument(s)." },
        Type_0_is_not_generic: { code: 2315, category: ts.DiagnosticCategory.Error, key: "Type '{0}' is not generic." },
        Global_type_0_must_be_a_class_or_interface_type: { code: 2316, category: ts.DiagnosticCategory.Error, key: "Global type '{0}' must be a class or interface type." },
        Global_type_0_must_have_1_type_parameter_s: { code: 2317, category: ts.DiagnosticCategory.Error, key: "Global type '{0}' must have {1} type parameter(s)." },
        Cannot_find_global_type_0: { code: 2318, category: ts.DiagnosticCategory.Error, key: "Cannot find global type '{0}'." },
        Named_property_0_of_types_1_and_2_are_not_identical: { code: 2319, category: ts.DiagnosticCategory.Error, key: "Named property '{0}' of types '{1}' and '{2}' are not identical." },
        Interface_0_cannot_simultaneously_extend_types_1_and_2: { code: 2320, category: ts.DiagnosticCategory.Error, key: "Interface '{0}' cannot simultaneously extend types '{1}' and '{2}'." },
        Excessive_stack_depth_comparing_types_0_and_1: { code: 2321, category: ts.DiagnosticCategory.Error, key: "Excessive stack depth comparing types '{0}' and '{1}'." },
        Type_0_is_not_assignable_to_type_1: { code: 2322, category: ts.DiagnosticCategory.Error, key: "Type '{0}' is not assignable to type '{1}'." },
        Property_0_is_missing_in_type_1: { code: 2324, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is missing in type '{1}'." },
        Property_0_is_private_in_type_1_but_not_in_type_2: { code: 2325, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is private in type '{1}' but not in type '{2}'." },
        Types_of_property_0_are_incompatible: { code: 2326, category: ts.DiagnosticCategory.Error, key: "Types of property '{0}' are incompatible." },
        Property_0_is_optional_in_type_1_but_required_in_type_2: { code: 2327, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is optional in type '{1}' but required in type '{2}'." },
        Types_of_parameters_0_and_1_are_incompatible: { code: 2328, category: ts.DiagnosticCategory.Error, key: "Types of parameters '{0}' and '{1}' are incompatible." },
        Index_signature_is_missing_in_type_0: { code: 2329, category: ts.DiagnosticCategory.Error, key: "Index signature is missing in type '{0}'." },
        Index_signatures_are_incompatible: { code: 2330, category: ts.DiagnosticCategory.Error, key: "Index signatures are incompatible." },
        this_cannot_be_referenced_in_a_module_or_namespace_body: { code: 2331, category: ts.DiagnosticCategory.Error, key: "'this' cannot be referenced in a module or namespace body." },
        this_cannot_be_referenced_in_current_location: { code: 2332, category: ts.DiagnosticCategory.Error, key: "'this' cannot be referenced in current location." },
        this_cannot_be_referenced_in_constructor_arguments: { code: 2333, category: ts.DiagnosticCategory.Error, key: "'this' cannot be referenced in constructor arguments." },
        this_cannot_be_referenced_in_a_static_property_initializer: { code: 2334, category: ts.DiagnosticCategory.Error, key: "'this' cannot be referenced in a static property initializer." },
        super_can_only_be_referenced_in_a_derived_class: { code: 2335, category: ts.DiagnosticCategory.Error, key: "'super' can only be referenced in a derived class." },
        super_cannot_be_referenced_in_constructor_arguments: { code: 2336, category: ts.DiagnosticCategory.Error, key: "'super' cannot be referenced in constructor arguments." },
        Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors: { code: 2337, category: ts.DiagnosticCategory.Error, key: "Super calls are not permitted outside constructors or in nested functions inside constructors" },
        super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class: { code: 2338, category: ts.DiagnosticCategory.Error, key: "'super' property access is permitted only in a constructor, member function, or member accessor of a derived class" },
        Property_0_does_not_exist_on_type_1: { code: 2339, category: ts.DiagnosticCategory.Error, key: "Property '{0}' does not exist on type '{1}'." },
        Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword: { code: 2340, category: ts.DiagnosticCategory.Error, key: "Only public and protected methods of the base class are accessible via the 'super' keyword" },
        Property_0_is_private_and_only_accessible_within_class_1: { code: 2341, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is private and only accessible within class '{1}'." },
        An_index_expression_argument_must_be_of_type_string_number_symbol_or_any: { code: 2342, category: ts.DiagnosticCategory.Error, key: "An index expression argument must be of type 'string', 'number', 'symbol, or 'any'." },
        Type_0_does_not_satisfy_the_constraint_1: { code: 2344, category: ts.DiagnosticCategory.Error, key: "Type '{0}' does not satisfy the constraint '{1}'." },
        Argument_of_type_0_is_not_assignable_to_parameter_of_type_1: { code: 2345, category: ts.DiagnosticCategory.Error, key: "Argument of type '{0}' is not assignable to parameter of type '{1}'." },
        Supplied_parameters_do_not_match_any_signature_of_call_target: { code: 2346, category: ts.DiagnosticCategory.Error, key: "Supplied parameters do not match any signature of call target." },
        Untyped_function_calls_may_not_accept_type_arguments: { code: 2347, category: ts.DiagnosticCategory.Error, key: "Untyped function calls may not accept type arguments." },
        Value_of_type_0_is_not_callable_Did_you_mean_to_include_new: { code: 2348, category: ts.DiagnosticCategory.Error, key: "Value of type '{0}' is not callable. Did you mean to include 'new'?" },
        Cannot_invoke_an_expression_whose_type_lacks_a_call_signature: { code: 2349, category: ts.DiagnosticCategory.Error, key: "Cannot invoke an expression whose type lacks a call signature." },
        Only_a_void_function_can_be_called_with_the_new_keyword: { code: 2350, category: ts.DiagnosticCategory.Error, key: "Only a void function can be called with the 'new' keyword." },
        Cannot_use_new_with_an_expression_whose_type_lacks_a_call_or_construct_signature: { code: 2351, category: ts.DiagnosticCategory.Error, key: "Cannot use 'new' with an expression whose type lacks a call or construct signature." },
        Neither_type_0_nor_type_1_is_assignable_to_the_other: { code: 2352, category: ts.DiagnosticCategory.Error, key: "Neither type '{0}' nor type '{1}' is assignable to the other." },
        No_best_common_type_exists_among_return_expressions: { code: 2354, category: ts.DiagnosticCategory.Error, key: "No best common type exists among return expressions." },
        A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value_or_consist_of_a_single_throw_statement: { code: 2355, category: ts.DiagnosticCategory.Error, key: "A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement." },
        An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type: { code: 2356, category: ts.DiagnosticCategory.Error, key: "An arithmetic operand must be of type 'any', 'number' or an enum type." },
        The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer: { code: 2357, category: ts.DiagnosticCategory.Error, key: "The operand of an increment or decrement operator must be a variable, property or indexer." },
        The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: { code: 2358, category: ts.DiagnosticCategory.Error, key: "The left-hand side of an 'instanceof' expression must be of type 'any', an object type or a type parameter." },
        The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type: { code: 2359, category: ts.DiagnosticCategory.Error, key: "The right-hand side of an 'instanceof' expression must be of type 'any' or of a type assignable to the 'Function' interface type." },
        The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol: { code: 2360, category: ts.DiagnosticCategory.Error, key: "The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'." },
        The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: { code: 2361, category: ts.DiagnosticCategory.Error, key: "The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter" },
        The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type: { code: 2362, category: ts.DiagnosticCategory.Error, key: "The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type." },
        The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type: { code: 2363, category: ts.DiagnosticCategory.Error, key: "The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type." },
        Invalid_left_hand_side_of_assignment_expression: { code: 2364, category: ts.DiagnosticCategory.Error, key: "Invalid left-hand side of assignment expression." },
        Operator_0_cannot_be_applied_to_types_1_and_2: { code: 2365, category: ts.DiagnosticCategory.Error, key: "Operator '{0}' cannot be applied to types '{1}' and '{2}'." },
        Type_parameter_name_cannot_be_0: { code: 2368, category: ts.DiagnosticCategory.Error, key: "Type parameter name cannot be '{0}'" },
        A_parameter_property_is_only_allowed_in_a_constructor_implementation: { code: 2369, category: ts.DiagnosticCategory.Error, key: "A parameter property is only allowed in a constructor implementation." },
        A_rest_parameter_must_be_of_an_array_type: { code: 2370, category: ts.DiagnosticCategory.Error, key: "A rest parameter must be of an array type." },
        A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation: { code: 2371, category: ts.DiagnosticCategory.Error, key: "A parameter initializer is only allowed in a function or constructor implementation." },
        Parameter_0_cannot_be_referenced_in_its_initializer: { code: 2372, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' cannot be referenced in its initializer." },
        Initializer_of_parameter_0_cannot_reference_identifier_1_declared_after_it: { code: 2373, category: ts.DiagnosticCategory.Error, key: "Initializer of parameter '{0}' cannot reference identifier '{1}' declared after it." },
        Duplicate_string_index_signature: { code: 2374, category: ts.DiagnosticCategory.Error, key: "Duplicate string index signature." },
        Duplicate_number_index_signature: { code: 2375, category: ts.DiagnosticCategory.Error, key: "Duplicate number index signature." },
        A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_or_has_parameter_properties: { code: 2376, category: ts.DiagnosticCategory.Error, key: "A 'super' call must be the first statement in the constructor when a class contains initialized properties or has parameter properties." },
        Constructors_for_derived_classes_must_contain_a_super_call: { code: 2377, category: ts.DiagnosticCategory.Error, key: "Constructors for derived classes must contain a 'super' call." },
        A_get_accessor_must_return_a_value_or_consist_of_a_single_throw_statement: { code: 2378, category: ts.DiagnosticCategory.Error, key: "A 'get' accessor must return a value or consist of a single 'throw' statement." },
        Getter_and_setter_accessors_do_not_agree_in_visibility: { code: 2379, category: ts.DiagnosticCategory.Error, key: "Getter and setter accessors do not agree in visibility." },
        get_and_set_accessor_must_have_the_same_type: { code: 2380, category: ts.DiagnosticCategory.Error, key: "'get' and 'set' accessor must have the same type." },
        A_signature_with_an_implementation_cannot_use_a_string_literal_type: { code: 2381, category: ts.DiagnosticCategory.Error, key: "A signature with an implementation cannot use a string literal type." },
        Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature: { code: 2382, category: ts.DiagnosticCategory.Error, key: "Specialized overload signature is not assignable to any non-specialized signature." },
        Overload_signatures_must_all_be_exported_or_not_exported: { code: 2383, category: ts.DiagnosticCategory.Error, key: "Overload signatures must all be exported or not exported." },
        Overload_signatures_must_all_be_ambient_or_non_ambient: { code: 2384, category: ts.DiagnosticCategory.Error, key: "Overload signatures must all be ambient or non-ambient." },
        Overload_signatures_must_all_be_public_private_or_protected: { code: 2385, category: ts.DiagnosticCategory.Error, key: "Overload signatures must all be public, private or protected." },
        Overload_signatures_must_all_be_optional_or_required: { code: 2386, category: ts.DiagnosticCategory.Error, key: "Overload signatures must all be optional or required." },
        Function_overload_must_be_static: { code: 2387, category: ts.DiagnosticCategory.Error, key: "Function overload must be static." },
        Function_overload_must_not_be_static: { code: 2388, category: ts.DiagnosticCategory.Error, key: "Function overload must not be static." },
        Function_implementation_name_must_be_0: { code: 2389, category: ts.DiagnosticCategory.Error, key: "Function implementation name must be '{0}'." },
        Constructor_implementation_is_missing: { code: 2390, category: ts.DiagnosticCategory.Error, key: "Constructor implementation is missing." },
        Function_implementation_is_missing_or_not_immediately_following_the_declaration: { code: 2391, category: ts.DiagnosticCategory.Error, key: "Function implementation is missing or not immediately following the declaration." },
        Multiple_constructor_implementations_are_not_allowed: { code: 2392, category: ts.DiagnosticCategory.Error, key: "Multiple constructor implementations are not allowed." },
        Duplicate_function_implementation: { code: 2393, category: ts.DiagnosticCategory.Error, key: "Duplicate function implementation." },
        Overload_signature_is_not_compatible_with_function_implementation: { code: 2394, category: ts.DiagnosticCategory.Error, key: "Overload signature is not compatible with function implementation." },
        Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local: { code: 2395, category: ts.DiagnosticCategory.Error, key: "Individual declarations in merged declaration {0} must be all exported or all local." },
        Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters: { code: 2396, category: ts.DiagnosticCategory.Error, key: "Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters." },
        Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference: { code: 2399, category: ts.DiagnosticCategory.Error, key: "Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference." },
        Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference: { code: 2400, category: ts.DiagnosticCategory.Error, key: "Expression resolves to variable declaration '_this' that compiler uses to capture 'this' reference." },
        Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference: { code: 2401, category: ts.DiagnosticCategory.Error, key: "Duplicate identifier '_super'. Compiler uses '_super' to capture base class reference." },
        Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference: { code: 2402, category: ts.DiagnosticCategory.Error, key: "Expression resolves to '_super' that compiler uses to capture base class reference." },
        Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2: { code: 2403, category: ts.DiagnosticCategory.Error, key: "Subsequent variable declarations must have the same type.  Variable '{0}' must be of type '{1}', but here has type '{2}'." },
        The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation: { code: 2404, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...in' statement cannot use a type annotation." },
        The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any: { code: 2405, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...in' statement must be of type 'string' or 'any'." },
        Invalid_left_hand_side_in_for_in_statement: { code: 2406, category: ts.DiagnosticCategory.Error, key: "Invalid left-hand side in 'for...in' statement." },
        The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter: { code: 2407, category: ts.DiagnosticCategory.Error, key: "The right-hand side of a 'for...in' statement must be of type 'any', an object type or a type parameter." },
        Setters_cannot_return_a_value: { code: 2408, category: ts.DiagnosticCategory.Error, key: "Setters cannot return a value." },
        Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class: { code: 2409, category: ts.DiagnosticCategory.Error, key: "Return type of constructor signature must be assignable to the instance type of the class" },
        All_symbols_within_a_with_block_will_be_resolved_to_any: { code: 2410, category: ts.DiagnosticCategory.Error, key: "All symbols within a 'with' block will be resolved to 'any'." },
        Property_0_of_type_1_is_not_assignable_to_string_index_type_2: { code: 2411, category: ts.DiagnosticCategory.Error, key: "Property '{0}' of type '{1}' is not assignable to string index type '{2}'." },
        Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2: { code: 2412, category: ts.DiagnosticCategory.Error, key: "Property '{0}' of type '{1}' is not assignable to numeric index type '{2}'." },
        Numeric_index_type_0_is_not_assignable_to_string_index_type_1: { code: 2413, category: ts.DiagnosticCategory.Error, key: "Numeric index type '{0}' is not assignable to string index type '{1}'." },
        Class_name_cannot_be_0: { code: 2414, category: ts.DiagnosticCategory.Error, key: "Class name cannot be '{0}'" },
        Class_0_incorrectly_extends_base_class_1: { code: 2415, category: ts.DiagnosticCategory.Error, key: "Class '{0}' incorrectly extends base class '{1}'." },
        Class_static_side_0_incorrectly_extends_base_class_static_side_1: { code: 2417, category: ts.DiagnosticCategory.Error, key: "Class static side '{0}' incorrectly extends base class static side '{1}'." },
        Type_name_0_in_extends_clause_does_not_reference_constructor_function_for_0: { code: 2419, category: ts.DiagnosticCategory.Error, key: "Type name '{0}' in extends clause does not reference constructor function for '{0}'." },
        Class_0_incorrectly_implements_interface_1: { code: 2420, category: ts.DiagnosticCategory.Error, key: "Class '{0}' incorrectly implements interface '{1}'." },
        A_class_may_only_implement_another_class_or_interface: { code: 2422, category: ts.DiagnosticCategory.Error, key: "A class may only implement another class or interface." },
        Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor: { code: 2423, category: ts.DiagnosticCategory.Error, key: "Class '{0}' defines instance member function '{1}', but extended class '{2}' defines it as instance member accessor." },
        Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_property: { code: 2424, category: ts.DiagnosticCategory.Error, key: "Class '{0}' defines instance member function '{1}', but extended class '{2}' defines it as instance member property." },
        Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function: { code: 2425, category: ts.DiagnosticCategory.Error, key: "Class '{0}' defines instance member property '{1}', but extended class '{2}' defines it as instance member function." },
        Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function: { code: 2426, category: ts.DiagnosticCategory.Error, key: "Class '{0}' defines instance member accessor '{1}', but extended class '{2}' defines it as instance member function." },
        Interface_name_cannot_be_0: { code: 2427, category: ts.DiagnosticCategory.Error, key: "Interface name cannot be '{0}'" },
        All_declarations_of_an_interface_must_have_identical_type_parameters: { code: 2428, category: ts.DiagnosticCategory.Error, key: "All declarations of an interface must have identical type parameters." },
        Interface_0_incorrectly_extends_interface_1: { code: 2430, category: ts.DiagnosticCategory.Error, key: "Interface '{0}' incorrectly extends interface '{1}'." },
        Enum_name_cannot_be_0: { code: 2431, category: ts.DiagnosticCategory.Error, key: "Enum name cannot be '{0}'" },
        In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element: { code: 2432, category: ts.DiagnosticCategory.Error, key: "In an enum with multiple declarations, only one declaration can omit an initializer for its first enum element." },
        A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged: { code: 2433, category: ts.DiagnosticCategory.Error, key: "A namespace declaration cannot be in a different file from a class or function with which it is merged" },
        A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged: { code: 2434, category: ts.DiagnosticCategory.Error, key: "A namespace declaration cannot be located prior to a class or function with which it is merged" },
        Ambient_modules_cannot_be_nested_in_other_modules: { code: 2435, category: ts.DiagnosticCategory.Error, key: "Ambient modules cannot be nested in other modules." },
        Ambient_module_declaration_cannot_specify_relative_module_name: { code: 2436, category: ts.DiagnosticCategory.Error, key: "Ambient module declaration cannot specify relative module name." },
        Module_0_is_hidden_by_a_local_declaration_with_the_same_name: { code: 2437, category: ts.DiagnosticCategory.Error, key: "Module '{0}' is hidden by a local declaration with the same name" },
        Import_name_cannot_be_0: { code: 2438, category: ts.DiagnosticCategory.Error, key: "Import name cannot be '{0}'" },
        Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name: { code: 2439, category: ts.DiagnosticCategory.Error, key: "Import or export declaration in an ambient module declaration cannot reference module through relative module name." },
        Import_declaration_conflicts_with_local_declaration_of_0: { code: 2440, category: ts.DiagnosticCategory.Error, key: "Import declaration conflicts with local declaration of '{0}'" },
        Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module: { code: 2441, category: ts.DiagnosticCategory.Error, key: "Duplicate identifier '{0}'. Compiler reserves name '{1}' in top level scope of a module." },
        Types_have_separate_declarations_of_a_private_property_0: { code: 2442, category: ts.DiagnosticCategory.Error, key: "Types have separate declarations of a private property '{0}'." },
        Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2: { code: 2443, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is protected but type '{1}' is not a class derived from '{2}'." },
        Property_0_is_protected_in_type_1_but_public_in_type_2: { code: 2444, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is protected in type '{1}' but public in type '{2}'." },
        Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses: { code: 2445, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is protected and only accessible within class '{1}' and its subclasses." },
        Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1: { code: 2446, category: ts.DiagnosticCategory.Error, key: "Property '{0}' is protected and only accessible through an instance of class '{1}'." },
        The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead: { code: 2447, category: ts.DiagnosticCategory.Error, key: "The '{0}' operator is not allowed for boolean types. Consider using '{1}' instead." },
        Block_scoped_variable_0_used_before_its_declaration: { code: 2448, category: ts.DiagnosticCategory.Error, key: "Block-scoped variable '{0}' used before its declaration." },
        The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant: { code: 2449, category: ts.DiagnosticCategory.Error, key: "The operand of an increment or decrement operator cannot be a constant." },
        Left_hand_side_of_assignment_expression_cannot_be_a_constant: { code: 2450, category: ts.DiagnosticCategory.Error, key: "Left-hand side of assignment expression cannot be a constant." },
        Cannot_redeclare_block_scoped_variable_0: { code: 2451, category: ts.DiagnosticCategory.Error, key: "Cannot redeclare block-scoped variable '{0}'." },
        An_enum_member_cannot_have_a_numeric_name: { code: 2452, category: ts.DiagnosticCategory.Error, key: "An enum member cannot have a numeric name." },
        The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_type_arguments_explicitly: { code: 2453, category: ts.DiagnosticCategory.Error, key: "The type argument for type parameter '{0}' cannot be inferred from the usage. Consider specifying the type arguments explicitly." },
        Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0: { code: 2455, category: ts.DiagnosticCategory.Error, key: "Type argument candidate '{1}' is not a valid type argument because it is not a supertype of candidate '{0}'." },
        Type_alias_0_circularly_references_itself: { code: 2456, category: ts.DiagnosticCategory.Error, key: "Type alias '{0}' circularly references itself." },
        Type_alias_name_cannot_be_0: { code: 2457, category: ts.DiagnosticCategory.Error, key: "Type alias name cannot be '{0}'" },
        An_AMD_module_cannot_have_multiple_name_assignments: { code: 2458, category: ts.DiagnosticCategory.Error, key: "An AMD module cannot have multiple name assignments." },
        Type_0_has_no_property_1_and_no_string_index_signature: { code: 2459, category: ts.DiagnosticCategory.Error, key: "Type '{0}' has no property '{1}' and no string index signature." },
        Type_0_has_no_property_1: { code: 2460, category: ts.DiagnosticCategory.Error, key: "Type '{0}' has no property '{1}'." },
        Type_0_is_not_an_array_type: { code: 2461, category: ts.DiagnosticCategory.Error, key: "Type '{0}' is not an array type." },
        A_rest_element_must_be_last_in_an_array_destructuring_pattern: { code: 2462, category: ts.DiagnosticCategory.Error, key: "A rest element must be last in an array destructuring pattern" },
        A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature: { code: 2463, category: ts.DiagnosticCategory.Error, key: "A binding pattern parameter cannot be optional in an implementation signature." },
        A_computed_property_name_must_be_of_type_string_number_symbol_or_any: { code: 2464, category: ts.DiagnosticCategory.Error, key: "A computed property name must be of type 'string', 'number', 'symbol', or 'any'." },
        this_cannot_be_referenced_in_a_computed_property_name: { code: 2465, category: ts.DiagnosticCategory.Error, key: "'this' cannot be referenced in a computed property name." },
        super_cannot_be_referenced_in_a_computed_property_name: { code: 2466, category: ts.DiagnosticCategory.Error, key: "'super' cannot be referenced in a computed property name." },
        A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type: { code: 2467, category: ts.DiagnosticCategory.Error, key: "A computed property name cannot reference a type parameter from its containing type." },
        Cannot_find_global_value_0: { code: 2468, category: ts.DiagnosticCategory.Error, key: "Cannot find global value '{0}'." },
        The_0_operator_cannot_be_applied_to_type_symbol: { code: 2469, category: ts.DiagnosticCategory.Error, key: "The '{0}' operator cannot be applied to type 'symbol'." },
        Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object: { code: 2470, category: ts.DiagnosticCategory.Error, key: "'Symbol' reference does not refer to the global Symbol constructor object." },
        A_computed_property_name_of_the_form_0_must_be_of_type_symbol: { code: 2471, category: ts.DiagnosticCategory.Error, key: "A computed property name of the form '{0}' must be of type 'symbol'." },
        Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_6_and_higher: { code: 2472, category: ts.DiagnosticCategory.Error, key: "Spread operator in 'new' expressions is only available when targeting ECMAScript 6 and higher." },
        Enum_declarations_must_all_be_const_or_non_const: { code: 2473, category: ts.DiagnosticCategory.Error, key: "Enum declarations must all be const or non-const." },
        In_const_enum_declarations_member_initializer_must_be_constant_expression: { code: 2474, category: ts.DiagnosticCategory.Error, key: "In 'const' enum declarations member initializer must be constant expression." },
        const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment: { code: 2475, category: ts.DiagnosticCategory.Error, key: "'const' enums can only be used in property or index access expressions or the right hand side of an import declaration or export assignment." },
        A_const_enum_member_can_only_be_accessed_using_a_string_literal: { code: 2476, category: ts.DiagnosticCategory.Error, key: "A const enum member can only be accessed using a string literal." },
        const_enum_member_initializer_was_evaluated_to_a_non_finite_value: { code: 2477, category: ts.DiagnosticCategory.Error, key: "'const' enum member initializer was evaluated to a non-finite value." },
        const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN: { code: 2478, category: ts.DiagnosticCategory.Error, key: "'const' enum member initializer was evaluated to disallowed value 'NaN'." },
        Property_0_does_not_exist_on_const_enum_1: { code: 2479, category: ts.DiagnosticCategory.Error, key: "Property '{0}' does not exist on 'const' enum '{1}'." },
        let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations: { code: 2480, category: ts.DiagnosticCategory.Error, key: "'let' is not allowed to be used as a name in 'let' or 'const' declarations." },
        Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1: { code: 2481, category: ts.DiagnosticCategory.Error, key: "Cannot initialize outer scoped variable '{0}' in the same scope as block scoped declaration '{1}'." },
        The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation: { code: 2483, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...of' statement cannot use a type annotation." },
        Export_declaration_conflicts_with_exported_declaration_of_0: { code: 2484, category: ts.DiagnosticCategory.Error, key: "Export declaration conflicts with exported declaration of '{0}'" },
        The_left_hand_side_of_a_for_of_statement_cannot_be_a_previously_defined_constant: { code: 2485, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...of' statement cannot be a previously defined constant." },
        The_left_hand_side_of_a_for_in_statement_cannot_be_a_previously_defined_constant: { code: 2486, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...in' statement cannot be a previously defined constant." },
        Invalid_left_hand_side_in_for_of_statement: { code: 2487, category: ts.DiagnosticCategory.Error, key: "Invalid left-hand side in 'for...of' statement." },
        Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator: { code: 2488, category: ts.DiagnosticCategory.Error, key: "Type must have a '[Symbol.iterator]()' method that returns an iterator." },
        An_iterator_must_have_a_next_method: { code: 2489, category: ts.DiagnosticCategory.Error, key: "An iterator must have a 'next()' method." },
        The_type_returned_by_the_next_method_of_an_iterator_must_have_a_value_property: { code: 2490, category: ts.DiagnosticCategory.Error, key: "The type returned by the 'next()' method of an iterator must have a 'value' property." },
        The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern: { code: 2491, category: ts.DiagnosticCategory.Error, key: "The left-hand side of a 'for...in' statement cannot be a destructuring pattern." },
        Cannot_redeclare_identifier_0_in_catch_clause: { code: 2492, category: ts.DiagnosticCategory.Error, key: "Cannot redeclare identifier '{0}' in catch clause" },
        Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2: { code: 2493, category: ts.DiagnosticCategory.Error, key: "Tuple type '{0}' with length '{1}' cannot be assigned to tuple with length '{2}'." },
        Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher: { code: 2494, category: ts.DiagnosticCategory.Error, key: "Using a string in a 'for...of' statement is only supported in ECMAScript 5 and higher." },
        Type_0_is_not_an_array_type_or_a_string_type: { code: 2495, category: ts.DiagnosticCategory.Error, key: "Type '{0}' is not an array type or a string type." },
        The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression: { code: 2496, category: ts.DiagnosticCategory.Error, key: "The 'arguments' object cannot be referenced in an arrow function in ES3 and ES5. Consider using a standard function expression." },
        Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct: { code: 2497, category: ts.DiagnosticCategory.Error, key: "Module '{0}' resolves to a non-module entity and cannot be imported using this construct." },
        Module_0_uses_export_and_cannot_be_used_with_export_Asterisk: { code: 2498, category: ts.DiagnosticCategory.Error, key: "Module '{0}' uses 'export =' and cannot be used with 'export *'." },
        An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments: { code: 2499, category: ts.DiagnosticCategory.Error, key: "An interface can only extend an identifier/qualified-name with optional type arguments." },
        A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments: { code: 2500, category: ts.DiagnosticCategory.Error, key: "A class can only implement an identifier/qualified-name with optional type arguments." },
        A_rest_element_cannot_contain_a_binding_pattern: { code: 2501, category: ts.DiagnosticCategory.Error, key: "A rest element cannot contain a binding pattern." },
        _0_is_referenced_directly_or_indirectly_in_its_own_type_annotation: { code: 2502, category: ts.DiagnosticCategory.Error, key: "'{0}' is referenced directly or indirectly in its own type annotation." },
        Cannot_find_namespace_0: { code: 2503, category: ts.DiagnosticCategory.Error, key: "Cannot find namespace '{0}'." },
        Import_declaration_0_is_using_private_name_1: { code: 4000, category: ts.DiagnosticCategory.Error, key: "Import declaration '{0}' is using private name '{1}'." },
        Type_parameter_0_of_exported_class_has_or_is_using_private_name_1: { code: 4002, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of exported class has or is using private name '{1}'." },
        Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1: { code: 4004, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of exported interface has or is using private name '{1}'." },
        Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: { code: 4006, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'." },
        Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: { code: 4008, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of call signature from exported interface has or is using private name '{1}'." },
        Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: { code: 4010, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of public static method from exported class has or is using private name '{1}'." },
        Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: { code: 4012, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of public method from exported class has or is using private name '{1}'." },
        Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: { code: 4014, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of method from exported interface has or is using private name '{1}'." },
        Type_parameter_0_of_exported_function_has_or_is_using_private_name_1: { code: 4016, category: ts.DiagnosticCategory.Error, key: "Type parameter '{0}' of exported function has or is using private name '{1}'." },
        Implements_clause_of_exported_class_0_has_or_is_using_private_name_1: { code: 4019, category: ts.DiagnosticCategory.Error, key: "Implements clause of exported class '{0}' has or is using private name '{1}'." },
        Extends_clause_of_exported_class_0_has_or_is_using_private_name_1: { code: 4020, category: ts.DiagnosticCategory.Error, key: "Extends clause of exported class '{0}' has or is using private name '{1}'." },
        Extends_clause_of_exported_interface_0_has_or_is_using_private_name_1: { code: 4022, category: ts.DiagnosticCategory.Error, key: "Extends clause of exported interface '{0}' has or is using private name '{1}'." },
        Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4023, category: ts.DiagnosticCategory.Error, key: "Exported variable '{0}' has or is using name '{1}' from external module {2} but cannot be named." },
        Exported_variable_0_has_or_is_using_name_1_from_private_module_2: { code: 4024, category: ts.DiagnosticCategory.Error, key: "Exported variable '{0}' has or is using name '{1}' from private module '{2}'." },
        Exported_variable_0_has_or_is_using_private_name_1: { code: 4025, category: ts.DiagnosticCategory.Error, key: "Exported variable '{0}' has or is using private name '{1}'." },
        Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4026, category: ts.DiagnosticCategory.Error, key: "Public static property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named." },
        Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4027, category: ts.DiagnosticCategory.Error, key: "Public static property '{0}' of exported class has or is using name '{1}' from private module '{2}'." },
        Public_static_property_0_of_exported_class_has_or_is_using_private_name_1: { code: 4028, category: ts.DiagnosticCategory.Error, key: "Public static property '{0}' of exported class has or is using private name '{1}'." },
        Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4029, category: ts.DiagnosticCategory.Error, key: "Public property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named." },
        Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4030, category: ts.DiagnosticCategory.Error, key: "Public property '{0}' of exported class has or is using name '{1}' from private module '{2}'." },
        Public_property_0_of_exported_class_has_or_is_using_private_name_1: { code: 4031, category: ts.DiagnosticCategory.Error, key: "Public property '{0}' of exported class has or is using private name '{1}'." },
        Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2: { code: 4032, category: ts.DiagnosticCategory.Error, key: "Property '{0}' of exported interface has or is using name '{1}' from private module '{2}'." },
        Property_0_of_exported_interface_has_or_is_using_private_name_1: { code: 4033, category: ts.DiagnosticCategory.Error, key: "Property '{0}' of exported interface has or is using private name '{1}'." },
        Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4034, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public static property setter from exported class has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_private_name_1: { code: 4035, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public static property setter from exported class has or is using private name '{1}'." },
        Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4036, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public property setter from exported class has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_private_name_1: { code: 4037, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public property setter from exported class has or is using private name '{1}'." },
        Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: { code: 4038, category: ts.DiagnosticCategory.Error, key: "Return type of public static property getter from exported class has or is using name '{0}' from external module {1} but cannot be named." },
        Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1: { code: 4039, category: ts.DiagnosticCategory.Error, key: "Return type of public static property getter from exported class has or is using name '{0}' from private module '{1}'." },
        Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_private_name_0: { code: 4040, category: ts.DiagnosticCategory.Error, key: "Return type of public static property getter from exported class has or is using private name '{0}'." },
        Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: { code: 4041, category: ts.DiagnosticCategory.Error, key: "Return type of public property getter from exported class has or is using name '{0}' from external module {1} but cannot be named." },
        Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1: { code: 4042, category: ts.DiagnosticCategory.Error, key: "Return type of public property getter from exported class has or is using name '{0}' from private module '{1}'." },
        Return_type_of_public_property_getter_from_exported_class_has_or_is_using_private_name_0: { code: 4043, category: ts.DiagnosticCategory.Error, key: "Return type of public property getter from exported class has or is using private name '{0}'." },
        Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: { code: 4044, category: ts.DiagnosticCategory.Error, key: "Return type of constructor signature from exported interface has or is using name '{0}' from private module '{1}'." },
        Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0: { code: 4045, category: ts.DiagnosticCategory.Error, key: "Return type of constructor signature from exported interface has or is using private name '{0}'." },
        Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: { code: 4046, category: ts.DiagnosticCategory.Error, key: "Return type of call signature from exported interface has or is using name '{0}' from private module '{1}'." },
        Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0: { code: 4047, category: ts.DiagnosticCategory.Error, key: "Return type of call signature from exported interface has or is using private name '{0}'." },
        Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: { code: 4048, category: ts.DiagnosticCategory.Error, key: "Return type of index signature from exported interface has or is using name '{0}' from private module '{1}'." },
        Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0: { code: 4049, category: ts.DiagnosticCategory.Error, key: "Return type of index signature from exported interface has or is using private name '{0}'." },
        Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: { code: 4050, category: ts.DiagnosticCategory.Error, key: "Return type of public static method from exported class has or is using name '{0}' from external module {1} but cannot be named." },
        Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: { code: 4051, category: ts.DiagnosticCategory.Error, key: "Return type of public static method from exported class has or is using name '{0}' from private module '{1}'." },
        Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0: { code: 4052, category: ts.DiagnosticCategory.Error, key: "Return type of public static method from exported class has or is using private name '{0}'." },
        Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: { code: 4053, category: ts.DiagnosticCategory.Error, key: "Return type of public method from exported class has or is using name '{0}' from external module {1} but cannot be named." },
        Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: { code: 4054, category: ts.DiagnosticCategory.Error, key: "Return type of public method from exported class has or is using name '{0}' from private module '{1}'." },
        Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0: { code: 4055, category: ts.DiagnosticCategory.Error, key: "Return type of public method from exported class has or is using private name '{0}'." },
        Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1: { code: 4056, category: ts.DiagnosticCategory.Error, key: "Return type of method from exported interface has or is using name '{0}' from private module '{1}'." },
        Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0: { code: 4057, category: ts.DiagnosticCategory.Error, key: "Return type of method from exported interface has or is using private name '{0}'." },
        Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: { code: 4058, category: ts.DiagnosticCategory.Error, key: "Return type of exported function has or is using name '{0}' from external module {1} but cannot be named." },
        Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1: { code: 4059, category: ts.DiagnosticCategory.Error, key: "Return type of exported function has or is using name '{0}' from private module '{1}'." },
        Return_type_of_exported_function_has_or_is_using_private_name_0: { code: 4060, category: ts.DiagnosticCategory.Error, key: "Return type of exported function has or is using private name '{0}'." },
        Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4061, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of constructor from exported class has or is using name '{1}' from external module {2} but cannot be named." },
        Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4062, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of constructor from exported class has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1: { code: 4063, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of constructor from exported class has or is using private name '{1}'." },
        Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: { code: 4064, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of constructor signature from exported interface has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: { code: 4065, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'." },
        Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: { code: 4066, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of call signature from exported interface has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: { code: 4067, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of call signature from exported interface has or is using private name '{1}'." },
        Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4068, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public static method from exported class has or is using name '{1}' from external module {2} but cannot be named." },
        Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4069, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public static method from exported class has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: { code: 4070, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public static method from exported class has or is using private name '{1}'." },
        Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4071, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public method from exported class has or is using name '{1}' from external module {2} but cannot be named." },
        Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: { code: 4072, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public method from exported class has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: { code: 4073, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of public method from exported class has or is using private name '{1}'." },
        Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2: { code: 4074, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of method from exported interface has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: { code: 4075, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of method from exported interface has or is using private name '{1}'." },
        Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: { code: 4076, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of exported function has or is using name '{1}' from external module {2} but cannot be named." },
        Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2: { code: 4077, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of exported function has or is using name '{1}' from private module '{2}'." },
        Parameter_0_of_exported_function_has_or_is_using_private_name_1: { code: 4078, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' of exported function has or is using private name '{1}'." },
        Exported_type_alias_0_has_or_is_using_private_name_1: { code: 4081, category: ts.DiagnosticCategory.Error, key: "Exported type alias '{0}' has or is using private name '{1}'." },
        Default_export_of_the_module_has_or_is_using_private_name_0: { code: 4082, category: ts.DiagnosticCategory.Error, key: "Default export of the module has or is using private name '{0}'." },
        Loop_contains_block_scoped_variable_0_referenced_by_a_function_in_the_loop_This_is_only_supported_in_ECMAScript_6_or_higher: { code: 4091, category: ts.DiagnosticCategory.Error, key: "Loop contains block-scoped variable '{0}' referenced by a function in the loop. This is only supported in ECMAScript 6 or higher." },
        The_current_host_does_not_support_the_0_option: { code: 5001, category: ts.DiagnosticCategory.Error, key: "The current host does not support the '{0}' option." },
        Cannot_find_the_common_subdirectory_path_for_the_input_files: { code: 5009, category: ts.DiagnosticCategory.Error, key: "Cannot find the common subdirectory path for the input files." },
        Cannot_read_file_0_Colon_1: { code: 5012, category: ts.DiagnosticCategory.Error, key: "Cannot read file '{0}': {1}" },
        Unsupported_file_encoding: { code: 5013, category: ts.DiagnosticCategory.Error, key: "Unsupported file encoding." },
        Failed_to_parse_file_0_Colon_1: { code: 5014, category: ts.DiagnosticCategory.Error, key: "Failed to parse file '{0}': {1}." },
        Unknown_compiler_option_0: { code: 5023, category: ts.DiagnosticCategory.Error, key: "Unknown compiler option '{0}'." },
        Compiler_option_0_requires_a_value_of_type_1: { code: 5024, category: ts.DiagnosticCategory.Error, key: "Compiler option '{0}' requires a value of type {1}." },
        Could_not_write_file_0_Colon_1: { code: 5033, category: ts.DiagnosticCategory.Error, key: "Could not write file '{0}': {1}" },
        Option_mapRoot_cannot_be_specified_without_specifying_sourceMap_option: { code: 5038, category: ts.DiagnosticCategory.Error, key: "Option 'mapRoot' cannot be specified without specifying 'sourceMap' option." },
        Option_sourceRoot_cannot_be_specified_without_specifying_sourceMap_option: { code: 5039, category: ts.DiagnosticCategory.Error, key: "Option 'sourceRoot' cannot be specified without specifying 'sourceMap' option." },
        Option_noEmit_cannot_be_specified_with_option_out_or_outDir: { code: 5040, category: ts.DiagnosticCategory.Error, key: "Option 'noEmit' cannot be specified with option 'out' or 'outDir'." },
        Option_noEmit_cannot_be_specified_with_option_declaration: { code: 5041, category: ts.DiagnosticCategory.Error, key: "Option 'noEmit' cannot be specified with option 'declaration'." },
        Option_project_cannot_be_mixed_with_source_files_on_a_command_line: { code: 5042, category: ts.DiagnosticCategory.Error, key: "Option 'project' cannot be mixed with source files on a command line." },
        Option_sourceMap_cannot_be_specified_with_option_separateCompilation: { code: 5043, category: ts.DiagnosticCategory.Error, key: "Option 'sourceMap' cannot be specified with option 'separateCompilation'." },
        Option_declaration_cannot_be_specified_with_option_separateCompilation: { code: 5044, category: ts.DiagnosticCategory.Error, key: "Option 'declaration' cannot be specified with option 'separateCompilation'." },
        Option_noEmitOnError_cannot_be_specified_with_option_separateCompilation: { code: 5045, category: ts.DiagnosticCategory.Error, key: "Option 'noEmitOnError' cannot be specified with option 'separateCompilation'." },
        Option_out_cannot_be_specified_with_option_separateCompilation: { code: 5046, category: ts.DiagnosticCategory.Error, key: "Option 'out' cannot be specified with option 'separateCompilation'." },
        Option_separateCompilation_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES6_or_higher: { code: 5047, category: ts.DiagnosticCategory.Error, key: "Option 'separateCompilation' can only be used when either option'--module' is provided or option 'target' is 'ES6' or higher." },
        Option_sourceMap_cannot_be_specified_with_option_inlineSourceMap: { code: 5048, category: ts.DiagnosticCategory.Error, key: "Option 'sourceMap' cannot be specified with option 'inlineSourceMap'." },
        Option_sourceRoot_cannot_be_specified_with_option_inlineSourceMap: { code: 5049, category: ts.DiagnosticCategory.Error, key: "Option 'sourceRoot' cannot be specified with option 'inlineSourceMap'." },
        Option_mapRoot_cannot_be_specified_with_option_inlineSourceMap: { code: 5050, category: ts.DiagnosticCategory.Error, key: "Option 'mapRoot' cannot be specified with option 'inlineSourceMap'." },
        Option_inlineSources_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided: { code: 5051, category: ts.DiagnosticCategory.Error, key: "Option 'inlineSources' can only be used when either option '--inlineSourceMap' or option '--sourceMap' is provided." },
        Concatenate_and_emit_output_to_single_file: { code: 6001, category: ts.DiagnosticCategory.Message, key: "Concatenate and emit output to single file." },
        Generates_corresponding_d_ts_file: { code: 6002, category: ts.DiagnosticCategory.Message, key: "Generates corresponding '.d.ts' file." },
        Specifies_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations: { code: 6003, category: ts.DiagnosticCategory.Message, key: "Specifies the location where debugger should locate map files instead of generated locations." },
        Specifies_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations: { code: 6004, category: ts.DiagnosticCategory.Message, key: "Specifies the location where debugger should locate TypeScript files instead of source locations." },
        Watch_input_files: { code: 6005, category: ts.DiagnosticCategory.Message, key: "Watch input files." },
        Redirect_output_structure_to_the_directory: { code: 6006, category: ts.DiagnosticCategory.Message, key: "Redirect output structure to the directory." },
        Do_not_erase_const_enum_declarations_in_generated_code: { code: 6007, category: ts.DiagnosticCategory.Message, key: "Do not erase const enum declarations in generated code." },
        Do_not_emit_outputs_if_any_errors_were_reported: { code: 6008, category: ts.DiagnosticCategory.Message, key: "Do not emit outputs if any errors were reported." },
        Do_not_emit_comments_to_output: { code: 6009, category: ts.DiagnosticCategory.Message, key: "Do not emit comments to output." },
        Do_not_emit_outputs: { code: 6010, category: ts.DiagnosticCategory.Message, key: "Do not emit outputs." },
        Specify_ECMAScript_target_version_Colon_ES3_default_ES5_or_ES6_experimental: { code: 6015, category: ts.DiagnosticCategory.Message, key: "Specify ECMAScript target version: 'ES3' (default), 'ES5', or 'ES6' (experimental)" },
        Specify_module_code_generation_Colon_commonjs_amd_system_or_umd: { code: 6016, category: ts.DiagnosticCategory.Message, key: "Specify module code generation: 'commonjs', 'amd', 'system' or 'umd'" },
        Print_this_message: { code: 6017, category: ts.DiagnosticCategory.Message, key: "Print this message." },
        Print_the_compiler_s_version: { code: 6019, category: ts.DiagnosticCategory.Message, key: "Print the compiler's version." },
        Compile_the_project_in_the_given_directory: { code: 6020, category: ts.DiagnosticCategory.Message, key: "Compile the project in the given directory." },
        Syntax_Colon_0: { code: 6023, category: ts.DiagnosticCategory.Message, key: "Syntax: {0}" },
        options: { code: 6024, category: ts.DiagnosticCategory.Message, key: "options" },
        file: { code: 6025, category: ts.DiagnosticCategory.Message, key: "file" },
        Examples_Colon_0: { code: 6026, category: ts.DiagnosticCategory.Message, key: "Examples: {0}" },
        Options_Colon: { code: 6027, category: ts.DiagnosticCategory.Message, key: "Options:" },
        Version_0: { code: 6029, category: ts.DiagnosticCategory.Message, key: "Version {0}" },
        Insert_command_line_options_and_files_from_a_file: { code: 6030, category: ts.DiagnosticCategory.Message, key: "Insert command line options and files from a file." },
        File_change_detected_Starting_incremental_compilation: { code: 6032, category: ts.DiagnosticCategory.Message, key: "File change detected. Starting incremental compilation..." },
        KIND: { code: 6034, category: ts.DiagnosticCategory.Message, key: "KIND" },
        FILE: { code: 6035, category: ts.DiagnosticCategory.Message, key: "FILE" },
        VERSION: { code: 6036, category: ts.DiagnosticCategory.Message, key: "VERSION" },
        LOCATION: { code: 6037, category: ts.DiagnosticCategory.Message, key: "LOCATION" },
        DIRECTORY: { code: 6038, category: ts.DiagnosticCategory.Message, key: "DIRECTORY" },
        Compilation_complete_Watching_for_file_changes: { code: 6042, category: ts.DiagnosticCategory.Message, key: "Compilation complete. Watching for file changes." },
        Generates_corresponding_map_file: { code: 6043, category: ts.DiagnosticCategory.Message, key: "Generates corresponding '.map' file." },
        Compiler_option_0_expects_an_argument: { code: 6044, category: ts.DiagnosticCategory.Error, key: "Compiler option '{0}' expects an argument." },
        Unterminated_quoted_string_in_response_file_0: { code: 6045, category: ts.DiagnosticCategory.Error, key: "Unterminated quoted string in response file '{0}'." },
        Argument_for_module_option_must_be_commonjs_amd_system_or_umd: { code: 6046, category: ts.DiagnosticCategory.Error, key: "Argument for '--module' option must be 'commonjs', 'amd', 'system' or 'umd'." },
        Argument_for_target_option_must_be_ES3_ES5_or_ES6: { code: 6047, category: ts.DiagnosticCategory.Error, key: "Argument for '--target' option must be 'ES3', 'ES5', or 'ES6'." },
        Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1: { code: 6048, category: ts.DiagnosticCategory.Error, key: "Locale must be of the form <language> or <language>-<territory>. For example '{0}' or '{1}'." },
        Unsupported_locale_0: { code: 6049, category: ts.DiagnosticCategory.Error, key: "Unsupported locale '{0}'." },
        Unable_to_open_file_0: { code: 6050, category: ts.DiagnosticCategory.Error, key: "Unable to open file '{0}'." },
        Corrupted_locale_file_0: { code: 6051, category: ts.DiagnosticCategory.Error, key: "Corrupted locale file {0}." },
        Raise_error_on_expressions_and_declarations_with_an_implied_any_type: { code: 6052, category: ts.DiagnosticCategory.Message, key: "Raise error on expressions and declarations with an implied 'any' type." },
        File_0_not_found: { code: 6053, category: ts.DiagnosticCategory.Error, key: "File '{0}' not found." },
        File_0_has_unsupported_extension_The_only_supported_extensions_are_1: { code: 6054, category: ts.DiagnosticCategory.Error, key: "File '{0}' has unsupported extension. The only supported extensions are {1}." },
        Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures: { code: 6055, category: ts.DiagnosticCategory.Message, key: "Suppress noImplicitAny errors for indexing objects lacking index signatures." },
        Do_not_emit_declarations_for_code_that_has_an_internal_annotation: { code: 6056, category: ts.DiagnosticCategory.Message, key: "Do not emit declarations for code that has an '@internal' annotation." },
        Preserve_new_lines_when_emitting_code: { code: 6057, category: ts.DiagnosticCategory.Message, key: "Preserve new-lines when emitting code." },
        Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir: { code: 6058, category: ts.DiagnosticCategory.Message, key: "Specifies the root directory of input files. Use to control the output directory structure with --outDir." },
        File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files: { code: 6059, category: ts.DiagnosticCategory.Error, key: "File '{0}' is not under 'rootDir' '{1}'. 'rootDir' is expected to contain all source files." },
        Specifies_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix: { code: 6060, category: ts.DiagnosticCategory.Message, key: "Specifies the end of line sequence to be used when emitting files: 'CRLF' (dos) or 'LF' (unix)." },
        NEWLINE: { code: 6061, category: ts.DiagnosticCategory.Message, key: "NEWLINE" },
        Argument_for_newLine_option_must_be_CRLF_or_LF: { code: 6062, category: ts.DiagnosticCategory.Error, key: "Argument for '--newLine' option must be 'CRLF' or 'LF'." },
        Variable_0_implicitly_has_an_1_type: { code: 7005, category: ts.DiagnosticCategory.Error, key: "Variable '{0}' implicitly has an '{1}' type." },
        Parameter_0_implicitly_has_an_1_type: { code: 7006, category: ts.DiagnosticCategory.Error, key: "Parameter '{0}' implicitly has an '{1}' type." },
        Member_0_implicitly_has_an_1_type: { code: 7008, category: ts.DiagnosticCategory.Error, key: "Member '{0}' implicitly has an '{1}' type." },
        new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type: { code: 7009, category: ts.DiagnosticCategory.Error, key: "'new' expression, whose target lacks a construct signature, implicitly has an 'any' type." },
        _0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type: { code: 7010, category: ts.DiagnosticCategory.Error, key: "'{0}', which lacks return-type annotation, implicitly has an '{1}' return type." },
        Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type: { code: 7011, category: ts.DiagnosticCategory.Error, key: "Function expression, which lacks return-type annotation, implicitly has an '{0}' return type." },
        Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: { code: 7013, category: ts.DiagnosticCategory.Error, key: "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type." },
        Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_type_annotation: { code: 7016, category: ts.DiagnosticCategory.Error, key: "Property '{0}' implicitly has type 'any', because its 'set' accessor lacks a type annotation." },
        Index_signature_of_object_type_implicitly_has_an_any_type: { code: 7017, category: ts.DiagnosticCategory.Error, key: "Index signature of object type implicitly has an 'any' type." },
        Object_literal_s_property_0_implicitly_has_an_1_type: { code: 7018, category: ts.DiagnosticCategory.Error, key: "Object literal's property '{0}' implicitly has an '{1}' type." },
        Rest_parameter_0_implicitly_has_an_any_type: { code: 7019, category: ts.DiagnosticCategory.Error, key: "Rest parameter '{0}' implicitly has an 'any[]' type." },
        Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: { code: 7020, category: ts.DiagnosticCategory.Error, key: "Call signature, which lacks return-type annotation, implicitly has an 'any' return type." },
        _0_implicitly_has_type_any_because_it_is_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer: { code: 7022, category: ts.DiagnosticCategory.Error, key: "'{0}' implicitly has type 'any' because it is does not have a type annotation and is referenced directly or indirectly in its own initializer." },
        _0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: { code: 7023, category: ts.DiagnosticCategory.Error, key: "'{0}' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions." },
        Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: { code: 7024, category: ts.DiagnosticCategory.Error, key: "Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions." },
        You_cannot_rename_this_element: { code: 8000, category: ts.DiagnosticCategory.Error, key: "You cannot rename this element." },
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        module_declarations_can_only_be_used_in_a_ts_file: { code: 8007, category: ts.DiagnosticCategory.Error, key: "'module declarations' can only be used in a .ts file." },
        type_aliases_can_only_be_used_in_a_ts_file: { code: 8008, category: ts.DiagnosticCategory.Error, key: "'type aliases' can only be used in a .ts file." },
        _0_can_only_be_used_in_a_ts_file: { code: 8009, category: ts.DiagnosticCategory.Error, key: "'{0}' can only be used in a .ts file." },
        types_can_only_be_used_in_a_ts_file: { code: 8010, category: ts.DiagnosticCategory.Error, key: "'types' can only be used in a .ts file." },
        type_arguments_can_only_be_used_in_a_ts_file: { code: 8011, category: ts.DiagnosticCategory.Error, key: "'type arguments' can only be used in a .ts file." },
        parameter_modifiers_can_only_be_used_in_a_ts_file: { code: 8012, category: ts.DiagnosticCategory.Error, key: "'parameter modifiers' can only be used in a .ts file." },
        can_only_be_used_in_a_ts_file: { code: 8013, category: ts.DiagnosticCategory.Error, key: "'?' can only be used in a .ts file." },
        property_declarations_can_only_be_used_in_a_ts_file: { code: 8014, category: ts.DiagnosticCategory.Error, key: "'property declarations' can only be used in a .ts file." },
        enum_declarations_can_only_be_used_in_a_ts_file: { code: 8015, category: ts.DiagnosticCategory.Error, key: "'enum declarations' can only be used in a .ts file." },
        type_assertion_expressions_can_only_be_used_in_a_ts_file: { code: 8016, category: ts.DiagnosticCategory.Error, key: "'type assertion expressions' can only be used in a .ts file." },
        decorators_can_only_be_used_in_a_ts_file: { code: 8017, category: ts.DiagnosticCategory.Error, key: "'decorators' can only be used in a .ts file." },
        yield_expressions_are_not_currently_supported: { code: 9000, category: ts.DiagnosticCategory.Error, key: "'yield' expressions are not currently supported." },
        Generators_are_not_currently_supported: { code: 9001, category: ts.DiagnosticCategory.Error, key: "Generators are not currently supported." },
        Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_class_extends_clauses: { code: 9002, category: ts.DiagnosticCategory.Error, key: "Only identifiers/qualified-names with optional type arguments are currently supported in a class 'extends' clauses." },
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        class_declarations_are_only_supported_directly_inside_a_module_or_as_a_top_level_declaration: { code: 9004, category: ts.DiagnosticCategory.Error, key: "'class' declarations are only supported directly inside a module or as a top level declaration." }
    };
})(ts || (ts = {}));
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/// <reference path="diagnosticInformationMap.generated.ts"/>
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11694, 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, 11728, 11734, 11736, 11742, 11744, 11775, 11823, 11823, 12293, 12295, 12321, 12335, 12337, 12341, 12344, 12348, 12353, 12438, 12441, 12442, 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, 12593, 12686, 12704, 12730, 12784, 12799, 13312, 19893, 19968, 40908, 40960, 42124, 42192, 42237, 42240, 42508, 42512, 42539, 42560, 42607, 42612, 42621, 42623, 42647, 42655, 42737, 42775, 42783, 42786, 42888, 42891, 42894, 42896, 42899, 42912, 42922, 43000, 43047, 43072, 43123, 43136, 43204, 43216, 43225, 43232, 43255, 43259, 43259, 43264, 43309, 43312, 43347, 43360, 43388, 43392, 43456, 43471, 43481, 43520, 43574, 43584, 43597, 43600, 43609, 43616, 43638, 43642, 43643, 43648, 43714, 43739, 43741, 43744, 43759, 43762, 43766, 43777, 43782, 43785, 43790, 43793, 43798, 43808, 43814, 43816, 43822, 43968, 44010, 44012, 44013, 44016, 44025, 44032, 55203, 55216, 55238, 55243, 55291, 63744, 64109, 64112, 64217, 64256, 64262, 64275, 64279, 64285, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65024, 65039, 65056, 65062, 65075, 65076, 65101, 65103, 65136, 65140, 65142, 65276, 65296, 65305, 65313, 65338, 65343, 65343, 65345, 65370, 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500,];
    function lookupInUnicodeMap(code, map) {
        if (code < map[0]) {
            return false;
        }
        var lo = 0;
        var hi = map.length;
        var mid;
        while (lo + 1 < hi) {
            mid = lo + (hi - lo) / 2;
            mid -= mid % 2;
            if (map[mid] <= code && code <= map[mid + 1]) {
                return true;
            }
            if (code < map[mid]) {
                hi = mid;
            }
            else {
                lo = mid + 2;
            }
        }
        return false;
    }
    function isUnicodeIdentifierStart(code, languageVersion) {
        return languageVersion >= 1 ?
            lookupInUnicodeMap(code, unicodeES5IdentifierStart) :
            lookupInUnicodeMap(code, unicodeES3IdentifierStart);
    }
    ts.isUnicodeIdentifierStart = isUnicodeIdentifierStart;
    function isUnicodeIdentifierPart(code, languageVersion) {
        return languageVersion >= 1 ?
            lookupInUnicodeMap(code, unicodeES5IdentifierPart) :
            lookupInUnicodeMap(code, unicodeES3IdentifierPart);
    }
    function makeReverseMap(source) {
        var result = [];
        for (var name_2 in source) {
            if (source.hasOwnProperty(name_2)) {
                result[source[name_2]] = name_2;
            }
        }
        return result;
    }
    var tokenStrings = makeReverseMap(textToToken);
    function tokenToString(t) {
        return tokenStrings[t];
    }
    ts.tokenToString = tokenToString;
    function stringToToken(s) {
        return textToToken[s];
    }
    ts.stringToToken = stringToToken;
    function computeLineStarts(text) {
        var result = new Array();
        var pos = 0;
        var lineStart = 0;
        while (pos < text.length) {
            var ch = text.charCodeAt(pos++);
            switch (ch) {
                case 13:
                    if (text.charCodeAt(pos) === 10) {
                        pos++;
                    }
                case 10:
                    result.push(lineStart);
                    lineStart = pos;
                    break;
                default:
                    if (ch > 127 && isLineBreak(ch)) {
                        result.push(lineStart);
                        lineStart = pos;
                    }
                    break;
            }
        }
        result.push(lineStart);
        return result;
    }
    ts.computeLineStarts = computeLineStarts;
    function getPositionOfLineAndCharacter(sourceFile, line, character) {
        return computePositionOfLineAndCharacter(getLineStarts(sourceFile), line, character);
    }
    ts.getPositionOfLineAndCharacter = getPositionOfLineAndCharacter;
    function computePositionOfLineAndCharacter(lineStarts, line, character) {
        ts.Debug.assert(line >= 0 && line < lineStarts.length);
        return lineStarts[line] + character;
    }
    ts.computePositionOfLineAndCharacter = computePositionOfLineAndCharacter;
    function getLineStarts(sourceFile) {
        return sourceFile.lineMap || (sourceFile.lineMap = computeLineStarts(sourceFile.text));
    }
    ts.getLineStarts = getLineStarts;
    function computeLineAndCharacterOfPosition(lineStarts, position) {
        var lineNumber = ts.binarySearch(lineStarts, position);
        if (lineNumber < 0) {
            lineNumber = ~lineNumber - 1;
        }
        return {
            line: lineNumber,
            character: position - lineStarts[lineNumber]
        };
    }
    ts.computeLineAndCharacterOfPosition = computeLineAndCharacterOfPosition;
    function getLineAndCharacterOfPosition(sourceFile, position) {
        return computeLineAndCharacterOfPosition(getLineStarts(sourceFile), position);
    }
    ts.getLineAndCharacterOfPosition = getLineAndCharacterOfPosition;
    var hasOwnProperty = Object.prototype.hasOwnProperty;
    function isWhiteSpace(ch) {
        return ch === 32 ||
            ch === 9 ||
            ch === 11 ||
            ch === 12 ||
            ch === 160 ||
            ch === 133 ||
            ch === 5760 ||
            ch >= 8192 && ch <= 8203 ||
            ch === 8239 ||
            ch === 8287 ||
            ch === 12288 ||
            ch === 65279;
    }
    ts.isWhiteSpace = isWhiteSpace;
    function isLineBreak(ch) {
        // ES5 7.3:
        // The ECMAScript line terminator characters are listed in Table 3.
        //     Table 3: Line Terminator Characters
        //     Code Unit Value     Name                    Formal Name
        //     \u000A              Line Feed               <LF>
        //     \u000D              Carriage Return         <CR>
        //     \u2028              Line separator          <LS>
        //     \u2029              Paragraph separator     <PS>
        // Only the characters in Table 3 are treated as line terminators. Other new line or line 
        // breaking characters are treated as white space but not as line terminators. 
        return ch === 10 ||
            ch === 13 ||
            ch === 8232 ||
            ch === 8233;
    }
    ts.isLineBreak = isLineBreak;
    function isDigit(ch) {
        return ch >= 48 && ch <= 57;
    }
    function isOctalDigit(ch) {
        return ch >= 48 && ch <= 55;
    }
    ts.isOctalDigit = isOctalDigit;
    function skipTrivia(text, pos, stopAfterLineBreak) {
        while (true) {
            var ch = text.charCodeAt(pos);
            switch (ch) {
                case 13:
                    if (text.charCodeAt(pos + 1) === 10) {
                        pos++;
                    }
                case 10:
                    pos++;
                    if (stopAfterLineBreak) {
                        return pos;
                    }
                    continue;
                case 9:
                case 11:
                case 12:
                case 32:
                    pos++;
                    continue;
                case 47:
                    if (text.charCodeAt(pos + 1) === 47) {
                        pos += 2;
                        while (pos < text.length) {
                            if (isLineBreak(text.charCodeAt(pos))) {
                                break;
                            }
                            pos++;
                        }
                        continue;
                    }
                    if (text.charCodeAt(pos + 1) === 42) {
                        pos += 2;
                        while (pos < text.length) {
                            if (text.charCodeAt(pos) === 42 && text.charCodeAt(pos + 1) === 47) {
                                pos += 2;
                                break;
                            }
                            pos++;
                        }
                        continue;
                    }
                    break;
                case 60:
                case 61:
                case 62:
                    if (isConflictMarkerTrivia(text, pos)) {
                        pos = scanConflictMarkerTrivia(text, pos);
                        continue;
                    }
                    break;
                default:
                    if (ch > 127 && (isWhiteSpace(ch) || isLineBreak(ch))) {
                        pos++;
                        continue;
                    }
                    break;
            }
            return pos;
        }
    }
    ts.skipTrivia = skipTrivia;
    var mergeConflictMarkerLength = "<<<<<<<".length;
    function isConflictMarkerTrivia(text, pos) {
        ts.Debug.assert(pos >= 0);
        if (pos === 0 || isLineBreak(text.charCodeAt(pos - 1))) {
            var ch = text.charCodeAt(pos);
            if ((pos + mergeConflictMarkerLength) < text.length) {
                for (var i = 0, n = mergeConflictMarkerLength; i < n; i++) {
                    if (text.charCodeAt(pos + i) !== ch) {
                        return false;
                    }
                }
                return ch === 61 ||
                    text.charCodeAt(pos + mergeConflictMarkerLength) === 32;
            }
        }
        return false;
    }
    function scanConflictMarkerTrivia(text, pos, error) {
        if (error) {
            error(ts.Diagnostics.Merge_conflict_marker_encountered, mergeConflictMarkerLength);
        }
        var ch = text.charCodeAt(pos);
        var len = text.length;
        if (ch === 60 || ch === 62) {
            while (pos < len && !isLineBreak(text.charCodeAt(pos))) {
                pos++;
            }
        }
        else {
            ts.Debug.assert(ch === 61);
            while (pos < len) {
                var ch_1 = text.charCodeAt(pos);
                if (ch_1 === 62 && isConflictMarkerTrivia(text, pos)) {
                    break;
                }
                pos++;
            }
        }
        return pos;
    }
    function getCommentRanges(text, pos, trailing) {
        var result;
        var collecting = trailing || pos === 0;
        while (true) {
            var ch = text.charCodeAt(pos);
            switch (ch) {
                case 13:
                    if (text.charCodeAt(pos + 1) === 10) {
                        pos++;
                    }
                case 10:
                    pos++;
                    if (trailing) {
                        return result;
                    }
                    collecting = true;
                    if (result && result.length) {
                        ts.lastOrUndefined(result).hasTrailingNewLine = true;
                    }
                    continue;
                case 9:
                case 11:
                case 12:
                case 32:
                    pos++;
                    continue;
                case 47:
                    var nextChar = text.charCodeAt(pos + 1);
                    var hasTrailingNewLine = false;
                    if (nextChar === 47 || nextChar === 42) {
                        var kind = nextChar === 47 ? 2 : 3;
                        var startPos = pos;
                        pos += 2;
                        if (nextChar === 47) {
                            while (pos < text.length) {
                                if (isLineBreak(text.charCodeAt(pos))) {
                                    hasTrailingNewLine = true;
                                    break;
                                }
                                pos++;
                            }
                        }
                        else {
                            while (pos < text.length) {
                                if (text.charCodeAt(pos) === 42 && text.charCodeAt(pos + 1) === 47) {
                                    pos += 2;
                                    break;
                                }
                                pos++;
                            }
                        }
                        if (collecting) {
                            if (!result) {
                                result = [];
                            }
                            result.push({ pos: startPos, end: pos, hasTrailingNewLine: hasTrailingNewLine, kind: kind });
                        }
                        continue;
                    }
                    break;
                default:
                    if (ch > 127 && (isWhiteSpace(ch) || isLineBreak(ch))) {
                        if (result && result.length && isLineBreak(ch)) {
                            ts.lastOrUndefined(result).hasTrailingNewLine = true;
                        }
                        pos++;
                        continue;
                    }
                    break;
            }
            return result;
        }
    }
    function getLeadingCommentRanges(text, pos) {
        return getCommentRanges(text, pos, false);
    }
    ts.getLeadingCommentRanges = getLeadingCommentRanges;
    function getTrailingCommentRanges(text, pos) {
        return getCommentRanges(text, pos, true);
    }
    ts.getTrailingCommentRanges = getTrailingCommentRanges;
    function isIdentifierStart(ch, languageVersion) {
        return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 ||
            ch === 36 || ch === 95 ||
            ch > 127 && isUnicodeIdentifierStart(ch, languageVersion);
    }
    ts.isIdentifierStart = isIdentifierStart;
    function isIdentifierPart(ch, languageVersion) {
        return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 ||
            ch >= 48 && ch <= 57 || ch === 36 || ch === 95 ||
            ch > 127 && isUnicodeIdentifierPart(ch, languageVersion);
    }
    ts.isIdentifierPart = isIdentifierPart;
    function createScanner(languageVersion, skipTrivia, text, onError, start, length) {
        var pos;
        var end;
        var startPos;
        var tokenPos;
        var token;
        var tokenValue;
        var precedingLineBreak;
        var hasExtendedUnicodeEscape;
        var tokenIsUnterminated;
        setText(text, start, length);
        return {
            getStartPos: function () { return startPos; },
            getTextPos: function () { return pos; },
            getToken: function () { return token; },
            getTokenPos: function () { return tokenPos; },
            getTokenText: function () { return text.substring(tokenPos, pos); },
            getTokenValue: function () { return tokenValue; },
            hasExtendedUnicodeEscape: function () { return hasExtendedUnicodeEscape; },
            hasPrecedingLineBreak: function () { return precedingLineBreak; },
            isIdentifier: function () { return token === 65 || token > 101; },
            isReservedWord: function () { return token >= 66 && token <= 101; },
            isUnterminated: function () { return tokenIsUnterminated; },
            reScanGreaterToken: reScanGreaterToken,
            reScanSlashToken: reScanSlashToken,
            reScanTemplateToken: reScanTemplateToken,
            scan: scan,
            setText: setText,
            setScriptTarget: setScriptTarget,
            setOnError: setOnError,
            setTextPos: setTextPos,
            tryScan: tryScan,
            lookAhead: lookAhead
        };
        function error(message, length) {
            if (onError) {
                onError(message, length || 0);
            }
        }
        function isIdentifierStart(ch) {
            return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 ||
                ch === 36 || ch === 95 ||
                ch > 127 && isUnicodeIdentifierStart(ch, languageVersion);
        }
        function isIdentifierPart(ch) {
            return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 ||
                ch >= 48 && ch <= 57 || ch === 36 || ch === 95 ||
                ch > 127 && isUnicodeIdentifierPart(ch, languageVersion);
        }
        function scanNumber() {
            var start = pos;
            while (isDigit(text.charCodeAt(pos)))
                pos++;
            if (text.charCodeAt(pos) === 46) {
                pos++;
                while (isDigit(text.charCodeAt(pos)))
                    pos++;
            }
            var end = pos;
            if (text.charCodeAt(pos) === 69 || text.charCodeAt(pos) === 101) {
                pos++;
                if (text.charCodeAt(pos) === 43 || text.charCodeAt(pos) === 45)
                    pos++;
                if (isDigit(text.charCodeAt(pos))) {
                    pos++;
                    while (isDigit(text.charCodeAt(pos)))
                        pos++;
                    end = pos;
                }
                else {
                    error(ts.Diagnostics.Digit_expected);
                }
            }
            return +(text.substring(start, end));
        }
        function scanOctalDigits() {
            var start = pos;
            while (isOctalDigit(text.charCodeAt(pos))) {
                pos++;
            }
            return +(text.substring(start, pos));
        }
        function scanExactNumberOfHexDigits(count) {
            return scanHexDigits(count, false);
        }
        function scanMinimumNumberOfHexDigits(count) {
            return scanHexDigits(count, true);
        }
        function scanHexDigits(minCount, scanAsManyAsPossible) {
            var digits = 0;
            var value = 0;
            while (digits < minCount || scanAsManyAsPossible) {
                var ch = text.charCodeAt(pos);
                if (ch >= 48 && ch <= 57) {
                    value = value * 16 + ch - 48;
                }
                else if (ch >= 65 && ch <= 70) {
                    value = value * 16 + ch - 65 + 10;
                }
                else if (ch >= 97 && ch <= 102) {
                    value = value * 16 + ch - 97 + 10;
                }
                else {
                    break;
                }
                pos++;
                digits++;
            }
            if (digits < minCount) {
                value = -1;
            }
            return value;
        }
        function scanString() {
            var quote = text.charCodeAt(pos++);
            var result = "";
            var start = pos;
            while (true) {
                if (pos >= end) {
                    result += text.substring(start, pos);
                    tokenIsUnterminated = true;
                    error(ts.Diagnostics.Unterminated_string_literal);
                    break;
                }
                var ch = text.charCodeAt(pos);
                if (ch === quote) {
                    result += text.substring(start, pos);
                    pos++;
                    break;
                }
                if (ch === 92) {
                    result += text.substring(start, pos);
                    result += scanEscapeSequence();
                    start = pos;
                    continue;
                }
                if (isLineBreak(ch)) {
                    result += text.substring(start, pos);
                    tokenIsUnterminated = true;
                    error(ts.Diagnostics.Unterminated_string_literal);
                    break;
                }
                pos++;
            }
            return result;
        }
        function scanTemplateAndSetTokenValue() {
            var startedWithBacktick = text.charCodeAt(pos) === 96;
            pos++;
            var start = pos;
            var contents = "";
            var resultingToken;
            while (true) {
                if (pos >= end) {
                    contents += text.substring(start, pos);
                    tokenIsUnterminated = true;
                    error(ts.Diagnostics.Unterminated_template_literal);
                    resultingToken = startedWithBacktick ? 10 : 13;
                    break;
                }
                var currChar = text.charCodeAt(pos);
                if (currChar === 96) {
                    contents += text.substring(start, pos);
                    pos++;
                    resultingToken = startedWithBacktick ? 10 : 13;
                    break;
                }
                if (currChar === 36 && pos + 1 < end && text.charCodeAt(pos + 1) === 123) {
                    contents += text.substring(start, pos);
                    pos += 2;
                    resultingToken = startedWithBacktick ? 11 : 12;
                    break;
                }
                if (currChar === 92) {
                    contents += text.substring(start, pos);
                    contents += scanEscapeSequence();
                    start = pos;
                    continue;
                }
                if (currChar === 13) {
                    contents += text.substring(start, pos);
                    pos++;
                    if (pos < end && text.charCodeAt(pos) === 10) {
                        pos++;
                    }
                    contents += "\n";
                    start = pos;
                    continue;
                }
                pos++;
            }
            ts.Debug.assert(resultingToken !== undefined);
            tokenValue = contents;
            return resultingToken;
        }
        function scanEscapeSequence() {
            pos++;
            if (pos >= end) {
                error(ts.Diagnostics.Unexpected_end_of_text);
                return "";
            }
            var ch = text.charCodeAt(pos++);
            switch (ch) {
                case 48:
                    return "\0";
                case 98:
                    return "\b";
                case 116:
                    return "\t";
                case 110:
                    return "\n";
                case 118:
                    return "\v";
                case 102:
                    return "\f";
                case 114:
                    return "\r";
                case 39:
                    return "\'";
                case 34:
                    return "\"";
                case 117:
                    if (pos < end && text.charCodeAt(pos) === 123) {
                        hasExtendedUnicodeEscape = true;
                        pos++;
                        return scanExtendedUnicodeEscape();
                    }
                    return scanHexadecimalEscape(4);
                case 120:
                    return scanHexadecimalEscape(2);
                case 13:
                    if (pos < end && text.charCodeAt(pos) === 10) {
                        pos++;
                    }
                case 10:
                case 8232:
                case 8233:
                    return "";
                default:
                    return String.fromCharCode(ch);
            }
        }
        function scanHexadecimalEscape(numDigits) {
            var escapedValue = scanExactNumberOfHexDigits(numDigits);
            if (escapedValue >= 0) {
                return String.fromCharCode(escapedValue);
            }
            else {
                error(ts.Diagnostics.Hexadecimal_digit_expected);
                return "";
            }
        }
        function scanExtendedUnicodeEscape() {
            var escapedValue = scanMinimumNumberOfHexDigits(1);
            var isInvalidExtendedEscape = false;
            if (escapedValue < 0) {
                error(ts.Diagnostics.Hexadecimal_digit_expected);
                isInvalidExtendedEscape = true;
            }
            else if (escapedValue > 0x10FFFF) {
                error(ts.Diagnostics.An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive);
                isInvalidExtendedEscape = true;
            }
            if (pos >= end) {
                error(ts.Diagnostics.Unexpected_end_of_text);
                isInvalidExtendedEscape = true;
            }
            else if (text.charCodeAt(pos) == 125) {
                pos++;
            }
            else {
                error(ts.Diagnostics.Unterminated_Unicode_escape_sequence);
                isInvalidExtendedEscape = true;
            }
            if (isInvalidExtendedEscape) {
                return "";
            }
            return utf16EncodeAsString(escapedValue);
        }
        function utf16EncodeAsString(codePoint) {
            ts.Debug.assert(0x0 <= codePoint && codePoint <= 0x10FFFF);
            if (codePoint <= 65535) {
                return String.fromCharCode(codePoint);
            }
            var codeUnit1 = Math.floor((codePoint - 65536) / 1024) + 0xD800;
            var codeUnit2 = ((codePoint - 65536) % 1024) + 0xDC00;
            return String.fromCharCode(codeUnit1, codeUnit2);
        }
        function peekUnicodeEscape() {
            if (pos + 5 < end && text.charCodeAt(pos + 1) === 117) {
                var start_1 = pos;
                pos += 2;
                var value = scanExactNumberOfHexDigits(4);
                pos = start_1;
                return value;
            }
            return -1;
        }
        function scanIdentifierParts() {
            var result = "";
            var start = pos;
            while (pos < end) {
                var ch = text.charCodeAt(pos);
                if (isIdentifierPart(ch)) {
                    pos++;
                }
                else if (ch === 92) {
                    ch = peekUnicodeEscape();
                    if (!(ch >= 0 && isIdentifierPart(ch))) {
                        break;
                    }
                    result += text.substring(start, pos);
                    result += String.fromCharCode(ch);
                    pos += 6;
                    start = pos;
                }
                else {
                    break;
                }
            }
            result += text.substring(start, pos);
            return result;
        }
        function getIdentifierToken() {
            var len = tokenValue.length;
            if (len >= 2 && len <= 11) {
                var ch = tokenValue.charCodeAt(0);
                if (ch >= 97 && ch <= 122 && hasOwnProperty.call(textToToken, tokenValue)) {
                    return token = textToToken[tokenValue];
                }
            }
            return token = 65;
        }
        function scanBinaryOrOctalDigits(base) {
            ts.Debug.assert(base !== 2 || base !== 8, "Expected either base 2 or base 8");
            var value = 0;
            var numberOfDigits = 0;
            while (true) {
                var ch = text.charCodeAt(pos);
                var valueOfCh = ch - 48;
                if (!isDigit(ch) || valueOfCh >= base) {
                    break;
                }
                value = value * base + valueOfCh;
                pos++;
                numberOfDigits++;
            }
            if (numberOfDigits === 0) {
                return -1;
            }
            return value;
        }
        function scan() {
            startPos = pos;
            hasExtendedUnicodeEscape = false;
            precedingLineBreak = false;
            tokenIsUnterminated = false;
            while (true) {
                tokenPos = pos;
                if (pos >= end) {
                    return token = 1;
                }
                var ch = text.charCodeAt(pos);
                switch (ch) {
                    case 10:
                    case 13:
                        precedingLineBreak = true;
                        if (skipTrivia) {
                            pos++;
                            continue;
                        }
                        else {
                            if (ch === 13 && pos + 1 < end && text.charCodeAt(pos + 1) === 10) {
                                pos += 2;
                            }
                            else {
                                pos++;
                            }
                            return token = 4;
                        }
                    case 9:
                    case 11:
                    case 12:
                    case 32:
                        if (skipTrivia) {
                            pos++;
                            continue;
                        }
                        else {
                            while (pos < end && isWhiteSpace(text.charCodeAt(pos))) {
                                pos++;
                            }
                            return token = 5;
                        }
                    case 33:
                        if (text.charCodeAt(pos + 1) === 61) {
                            if (text.charCodeAt(pos + 2) === 61) {
                                return pos += 3, token = 31;
                            }
                            return pos += 2, token = 29;
                        }
                        return pos++, token = 46;
                    case 34:
                    case 39:
                        tokenValue = scanString();
                        return token = 8;
                    case 96:
                        return token = scanTemplateAndSetTokenValue();
                    case 37:
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 58;
                        }
                        return pos++, token = 37;
                    case 38:
                        if (text.charCodeAt(pos + 1) === 38) {
                            return pos += 2, token = 48;
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 62;
                        }
                        return pos++, token = 43;
                    case 40:
                        return pos++, token = 16;
                    case 41:
                        return pos++, token = 17;
                    case 42:
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 56;
                        }
                        return pos++, token = 35;
                    case 43:
                        if (text.charCodeAt(pos + 1) === 43) {
                            return pos += 2, token = 38;
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 54;
                        }
                        return pos++, token = 33;
                    case 44:
                        return pos++, token = 23;
                    case 45:
                        if (text.charCodeAt(pos + 1) === 45) {
                            return pos += 2, token = 39;
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 55;
                        }
                        return pos++, token = 34;
                    case 46:
                        if (isDigit(text.charCodeAt(pos + 1))) {
                            tokenValue = "" + scanNumber();
                            return token = 7;
                        }
                        if (text.charCodeAt(pos + 1) === 46 && text.charCodeAt(pos + 2) === 46) {
                            return pos += 3, token = 21;
                        }
                        return pos++, token = 20;
                    case 47:
                        if (text.charCodeAt(pos + 1) === 47) {
                            pos += 2;
                            while (pos < end) {
                                if (isLineBreak(text.charCodeAt(pos))) {
                                    break;
                                }
                                pos++;
                            }
                            if (skipTrivia) {
                                continue;
                            }
                            else {
                                return token = 2;
                            }
                        }
                        if (text.charCodeAt(pos + 1) === 42) {
                            pos += 2;
                            var commentClosed = false;
                            while (pos < end) {
                                var ch_2 = text.charCodeAt(pos);
                                if (ch_2 === 42 && text.charCodeAt(pos + 1) === 47) {
                                    pos += 2;
                                    commentClosed = true;
                                    break;
                                }
                                if (isLineBreak(ch_2)) {
                                    precedingLineBreak = true;
                                }
                                pos++;
                            }
                            if (!commentClosed) {
                                error(ts.Diagnostics.Asterisk_Slash_expected);
                            }
                            if (skipTrivia) {
                                continue;
                            }
                            else {
                                tokenIsUnterminated = !commentClosed;
                                return token = 3;
                            }
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 57;
                        }
                        return pos++, token = 36;
                    case 48:
                        if (pos + 2 < end && (text.charCodeAt(pos + 1) === 88 || text.charCodeAt(pos + 1) === 120)) {
                            pos += 2;
                            var value = scanMinimumNumberOfHexDigits(1);
                            if (value < 0) {
                                error(ts.Diagnostics.Hexadecimal_digit_expected);
                                value = 0;
                            }
                            tokenValue = "" + value;
                            return token = 7;
                        }
                        else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 66 || text.charCodeAt(pos + 1) === 98)) {
                            pos += 2;
                            var value = scanBinaryOrOctalDigits(2);
                            if (value < 0) {
                                error(ts.Diagnostics.Binary_digit_expected);
                                value = 0;
                            }
                            tokenValue = "" + value;
                            return token = 7;
                        }
                        else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 79 || text.charCodeAt(pos + 1) === 111)) {
                            pos += 2;
                            var value = scanBinaryOrOctalDigits(8);
                            if (value < 0) {
                                error(ts.Diagnostics.Octal_digit_expected);
                                value = 0;
                            }
                            tokenValue = "" + value;
                            return token = 7;
                        }
                        if (pos + 1 < end && isOctalDigit(text.charCodeAt(pos + 1))) {
                            tokenValue = "" + scanOctalDigits();
                            return token = 7;
                        }
                    case 49:
                    case 50:
                    case 51:
                    case 52:
                    case 53:
                    case 54:
                    case 55:
                    case 56:
                    case 57:
                        tokenValue = "" + scanNumber();
                        return token = 7;
                    case 58:
                        return pos++, token = 51;
                    case 59:
                        return pos++, token = 22;
                    case 60:
                        if (isConflictMarkerTrivia(text, pos)) {
                            pos = scanConflictMarkerTrivia(text, pos, error);
                            if (skipTrivia) {
                                continue;
                            }
                            else {
                                return token = 6;
                            }
                        }
                        if (text.charCodeAt(pos + 1) === 60) {
                            if (text.charCodeAt(pos + 2) === 61) {
                                return pos += 3, token = 59;
                            }
                            return pos += 2, token = 40;
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 26;
                        }
                        return pos++, token = 24;
                    case 61:
                        if (isConflictMarkerTrivia(text, pos)) {
                            pos = scanConflictMarkerTrivia(text, pos, error);
                            if (skipTrivia) {
                                continue;
                            }
                            else {
                                return token = 6;
                            }
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            if (text.charCodeAt(pos + 2) === 61) {
                                return pos += 3, token = 30;
                            }
                            return pos += 2, token = 28;
                        }
                        if (text.charCodeAt(pos + 1) === 62) {
                            return pos += 2, token = 32;
                        }
                        return pos++, token = 53;
                    case 62:
                        if (isConflictMarkerTrivia(text, pos)) {
                            pos = scanConflictMarkerTrivia(text, pos, error);
                            if (skipTrivia) {
                                continue;
                            }
                            else {
                                return token = 6;
                            }
                        }
                        return pos++, token = 25;
                    case 63:
                        return pos++, token = 50;
                    case 91:
                        return pos++, token = 18;
                    case 93:
                        return pos++, token = 19;
                    case 94:
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 64;
                        }
                        return pos++, token = 45;
                    case 123:
                        return pos++, token = 14;
                    case 124:
                        if (text.charCodeAt(pos + 1) === 124) {
                            return pos += 2, token = 49;
                        }
                        if (text.charCodeAt(pos + 1) === 61) {
                            return pos += 2, token = 63;
                        }
                        return pos++, token = 44;
                    case 125:
                        return pos++, token = 15;
                    case 126:
                        return pos++, token = 47;
                    case 64:
                        return pos++, token = 52;
                    case 92:
                        var cookedChar = peekUnicodeEscape();
                        if (cookedChar >= 0 && isIdentifierStart(cookedChar)) {
                            pos += 6;
                            tokenValue = String.fromCharCode(cookedChar) + scanIdentifierParts();
                            return token = getIdentifierToken();
                        }
                        error(ts.Diagnostics.Invalid_character);
                        return pos++, token = 0;
                    default:
                        if (isIdentifierStart(ch)) {
                            pos++;
                            while (pos < end && isIdentifierPart(ch = text.charCodeAt(pos)))
                                pos++;
                            tokenValue = text.substring(tokenPos, pos);
                            if (ch === 92) {
                                tokenValue += scanIdentifierParts();
                            }
                            return token = getIdentifierToken();
                        }
                        else if (isWhiteSpace(ch)) {
                            pos++;
                            continue;
                        }
                        else if (isLineBreak(ch)) {
                            precedingLineBreak = true;
                            pos++;
                            continue;
                        }
                        error(ts.Diagnostics.Invalid_character);
                        return pos++, token = 0;
                }
            }
        }
        function reScanGreaterToken() {
            if (token === 25) {
                if (text.charCodeAt(pos) === 62) {
                    if (text.charCodeAt(pos + 1) === 62) {
                        if (text.charCodeAt(pos + 2) === 61) {
                            return pos += 3, token = 61;
                        }
                        return pos += 2, token = 42;
                    }
                    if (text.charCodeAt(pos + 1) === 61) {
                        return pos += 2, token = 60;
                    }
                    return pos++, token = 41;
                }
                if (text.charCodeAt(pos) === 61) {
                    return pos++, token = 27;
                }
            }
            return token;
        }
        function reScanSlashToken() {
            if (token === 36 || token === 57) {
                var p = tokenPos + 1;
                var inEscape = false;
                var inCharacterClass = false;
                while (true) {
                    if (p >= end) {
                        tokenIsUnterminated = true;
                        error(ts.Diagnostics.Unterminated_regular_expression_literal);
                        break;
                    }
                    var ch = text.charCodeAt(p);
                    if (isLineBreak(ch)) {
                        tokenIsUnterminated = true;
                        error(ts.Diagnostics.Unterminated_regular_expression_literal);
                        break;
                    }
                    if (inEscape) {
                        inEscape = false;
                    }
                    else if (ch === 47 && !inCharacterClass) {
                        p++;
                        break;
                    }
                    else if (ch === 91) {
                        inCharacterClass = true;
                    }
                    else if (ch === 92) {
                        inEscape = true;
                    }
                    else if (ch === 93) {
                        inCharacterClass = false;
                    }
                    p++;
                }
                while (p < end && isIdentifierPart(text.charCodeAt(p))) {
                    p++;
                }
                pos = p;
                tokenValue = text.substring(tokenPos, pos);
                token = 9;
            }
            return token;
        }
        function reScanTemplateToken() {
            ts.Debug.assert(token === 15, "'reScanTemplateToken' should only be called on a '}'");
            pos = tokenPos;
            return token = scanTemplateAndSetTokenValue();
        }
        function speculationHelper(callback, isLookahead) {
            var savePos = pos;
            var saveStartPos = startPos;
            var saveTokenPos = tokenPos;
            var saveToken = token;
            var saveTokenValue = tokenValue;
            var savePrecedingLineBreak = precedingLineBreak;
            var result = callback();
            if (!result || isLookahead) {
                pos = savePos;
                startPos = saveStartPos;
                tokenPos = saveTokenPos;
                token = saveToken;
                tokenValue = saveTokenValue;
                precedingLineBreak = savePrecedingLineBreak;
            }
            return result;
        }
        function lookAhead(callback) {
            return speculationHelper(callback, true);
        }
        function tryScan(callback) {
            return speculationHelper(callback, false);
        }
        function setText(newText, start, length) {
            text = newText || "";
            end = length === undefined ? text.length : start + length;
            setTextPos(start || 0);
        }
        function setOnError(errorCallback) {
            onError = errorCallback;
        }
        function setScriptTarget(scriptTarget) {
            languageVersion = scriptTarget;
        }
        function setTextPos(textPos) {
            ts.Debug.assert(textPos >= 0);
            pos = textPos;
            startPos = textPos;
            tokenPos = textPos;
            token = 0;
            precedingLineBreak = false;
            tokenValue = undefined;
            hasExtendedUnicodeEscape = false;
            tokenIsUnterminated = false;
        }
    }
    ts.createScanner = createScanner;
})(ts || (ts = {}));
/// <reference path="sys.ts"/>
/// <reference path="types.ts"/>
/// <reference path="core.ts"/>
/// <reference path="scanner.ts"/>
var ts;
(function (ts) {
    ts.optionDeclarations = [
        {
            name: "charset",
            type: "string"
        },
        {
            name: "declaration",
            shortName: "d",
            type: "boolean",
            description: ts.Diagnostics.Generates_corresponding_d_ts_file
        },
        {
            name: "diagnostics",
            type: "boolean"
        },
        {
            name: "emitBOM",
            type: "boolean"
        },
        {
            name: "help",
            shortName: "h",
            type: "boolean",
            description: ts.Diagnostics.Print_this_message
        },
        {
            name: "inlineSourceMap",
            type: "boolean"
        },
        {
            name: "inlineSources",
            type: "boolean"
        },
        {
            name: "listFiles",
            type: "boolean"
        },
        {
            name: "locale",
            type: "string"
        },
        {
            name: "mapRoot",
            type: "string",
            isFilePath: true,
            description: ts.Diagnostics.Specifies_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations,
            paramType: ts.Diagnostics.LOCATION
        },
        {
            name: "module",
            shortName: "m",
            type: {
                "commonjs": 1,
                "amd": 2,
                "system": 4,
                "umd": 3
            },
            description: ts.Diagnostics.Specify_module_code_generation_Colon_commonjs_amd_system_or_umd,
            paramType: ts.Diagnostics.KIND,
            error: ts.Diagnostics.Argument_for_module_option_must_be_commonjs_amd_system_or_umd
        },
        {
            name: "newLine",
            type: {
                "crlf": 0,
                "lf": 1
            },
            description: ts.Diagnostics.Specifies_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix,
            paramType: ts.Diagnostics.NEWLINE,
            error: ts.Diagnostics.Argument_for_newLine_option_must_be_CRLF_or_LF
        },
        {
            name: "noEmit",
            type: "boolean",
            description: ts.Diagnostics.Do_not_emit_outputs
        },
        {
            name: "noEmitHelpers",
            type: "boolean"
        },
        {
            name: "noEmitOnError",
            type: "boolean",
            description: ts.Diagnostics.Do_not_emit_outputs_if_any_errors_were_reported
        },
        {
            name: "noImplicitAny",
            type: "boolean",
            description: ts.Diagnostics.Raise_error_on_expressions_and_declarations_with_an_implied_any_type
        },
        {
            name: "noLib",
            type: "boolean"
        },
        {
            name: "noResolve",
            type: "boolean"
        },
        {
            name: "out",
            type: "string",
            description: ts.Diagnostics.Concatenate_and_emit_output_to_single_file,
            paramType: ts.Diagnostics.FILE
        },
        {
            name: "outDir",
            type: "string",
            isFilePath: true,
            description: ts.Diagnostics.Redirect_output_structure_to_the_directory,
            paramType: ts.Diagnostics.DIRECTORY
        },
        {
            name: "preserveConstEnums",
            type: "boolean",
            description: ts.Diagnostics.Do_not_erase_const_enum_declarations_in_generated_code
        },
        {
            name: "project",
            shortName: "p",
            type: "string",
            isFilePath: true,
            description: ts.Diagnostics.Compile_the_project_in_the_given_directory,
            paramType: ts.Diagnostics.DIRECTORY
        },
        {
            name: "removeComments",
            type: "boolean",
            description: ts.Diagnostics.Do_not_emit_comments_to_output
        },
        {
            name: "rootDir",
            type: "string",
            isFilePath: true,
            description: ts.Diagnostics.Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir,
            paramType: ts.Diagnostics.LOCATION
        },
        {
            name: "separateCompilation",
            type: "boolean"
        },
        {
            name: "sourceMap",
            type: "boolean",
            description: ts.Diagnostics.Generates_corresponding_map_file
        },
        {
            name: "sourceRoot",
            type: "string",
            isFilePath: true,
            description: ts.Diagnostics.Specifies_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations,
            paramType: ts.Diagnostics.LOCATION
        },
        {
            name: "suppressImplicitAnyIndexErrors",
            type: "boolean",
            description: ts.Diagnostics.Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures
        },
        {
            name: "stripInternal",
            type: "boolean",
            description: ts.Diagnostics.Do_not_emit_declarations_for_code_that_has_an_internal_annotation,
            experimental: true
        },
        {
            name: "target",
            shortName: "t",
            type: { "es3": 0, "es5": 1, "es6": 2 },
            description: ts.Diagnostics.Specify_ECMAScript_target_version_Colon_ES3_default_ES5_or_ES6_experimental,
            paramType: ts.Diagnostics.VERSION,
            error: ts.Diagnostics.Argument_for_target_option_must_be_ES3_ES5_or_ES6
        },
        {
            name: "version",
            shortName: "v",
            type: "boolean",
            description: ts.Diagnostics.Print_the_compiler_s_version
        },
        {
            name: "watch",
            shortName: "w",
            type: "boolean",
            description: ts.Diagnostics.Watch_input_files
        },
        {
            name: "emitDecoratorMetadata",
            type: "boolean",
            experimental: true
        }
    ];
    function parseCommandLine(commandLine) {
        var options = {};
        var fileNames = [];
        var errors = [];
        var shortOptionNames = {};
        var optionNameMap = {};
        ts.forEach(ts.optionDeclarations, function (option) {
            optionNameMap[option.name.toLowerCase()] = option;
            if (option.shortName) {
                shortOptionNames[option.shortName] = option.name;
            }
        });
        parseStrings(commandLine);
        return {
            options: options,
            fileNames: fileNames,
            errors: errors
        };
        function parseStrings(args) {
            var i = 0;
            while (i < args.length) {
                var s = args[i++];
                if (s.charCodeAt(0) === 64) {
                    parseResponseFile(s.slice(1));
                }
                else if (s.charCodeAt(0) === 45) {
                    s = s.slice(s.charCodeAt(1) === 45 ? 2 : 1).toLowerCase();
                    if (ts.hasProperty(shortOptionNames, s)) {
                        s = shortOptionNames[s];
                    }
                    if (ts.hasProperty(optionNameMap, s)) {
                        var opt = optionNameMap[s];
                        if (!args[i] && opt.type !== "boolean") {
                            errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_expects_an_argument, opt.name));
                        }
                        switch (opt.type) {
                            case "number":
                                options[opt.name] = parseInt(args[i++]);
                                break;
                            case "boolean":
                                options[opt.name] = true;
                                break;
                            case "string":
                                options[opt.name] = args[i++] || "";
                                break;
                            default:
                                var map = opt.type;
                                var key = (args[i++] || "").toLowerCase();
                                if (ts.hasProperty(map, key)) {
                                    options[opt.name] = map[key];
                                }
                                else {
                                    errors.push(ts.createCompilerDiagnostic(opt.error));
                                }
                        }
                    }
                    else {
                        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_compiler_option_0, s));
                    }
                }
                else {
                    fileNames.push(s);
                }
            }
        }
        function parseResponseFile(fileName) {
            var text = ts.sys.readFile(fileName);
            if (!text) {
                errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.File_0_not_found, fileName));
                return;
            }
            var args = [];
            var pos = 0;
            while (true) {
                while (pos < text.length && text.charCodeAt(pos) <= 32)
                    pos++;
                if (pos >= text.length)
                    break;
                var start = pos;
                if (text.charCodeAt(start) === 34) {
                    pos++;
                    while (pos < text.length && text.charCodeAt(pos) !== 34)
                        pos++;
                    if (pos < text.length) {
                        args.push(text.substring(start + 1, pos));
                        pos++;
                    }
                    else {
                        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unterminated_quoted_string_in_response_file_0, fileName));
                    }
                }
                else {
                    while (text.charCodeAt(pos) > 32)
                        pos++;
                    args.push(text.substring(start, pos));
                }
            }
            parseStrings(args);
        }
    }
    ts.parseCommandLine = parseCommandLine;
    function readConfigFile(fileName) {
        try {
            var text = ts.sys.readFile(fileName);
        }
        catch (e) {
            return { error: ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, e.message) };
        }
        return parseConfigFileText(fileName, text);
    }
    ts.readConfigFile = readConfigFile;
    function parseConfigFileText(fileName, jsonText) {
        try {
            return { config: /\S/.test(jsonText) ? JSON.parse(jsonText) : {} };
        }
        catch (e) {
            return { error: ts.createCompilerDiagnostic(ts.Diagnostics.Failed_to_parse_file_0_Colon_1, fileName, e.message) };
        }
    }
    ts.parseConfigFileText = parseConfigFileText;
    function parseConfigFile(json, host, basePath) {
        var errors = [];
        return {
            options: getCompilerOptions(),
            fileNames: getFiles(),
            errors: errors
        };
        function getCompilerOptions() {
            var options = {};
            var optionNameMap = {};
            ts.forEach(ts.optionDeclarations, function (option) {
                optionNameMap[option.name] = option;
            });
            var jsonOptions = json["compilerOptions"];
            if (jsonOptions) {
                for (var id in jsonOptions) {
                    if (ts.hasProperty(optionNameMap, id)) {
                        var opt = optionNameMap[id];
                        var optType = opt.type;
                        var value = jsonOptions[id];
                        var expectedType = typeof optType === "string" ? optType : "string";
                        if (typeof value === expectedType) {
                            if (typeof optType !== "string") {
                                var key = value.toLowerCase();
                                if (ts.hasProperty(optType, key)) {
                                    value = optType[key];
                                }
                                else {
                                    errors.push(ts.createCompilerDiagnostic(opt.error));
                                    value = 0;
                                }
                            }
                            if (opt.isFilePath) {
                                value = ts.normalizePath(ts.combinePaths(basePath, value));
                            }
                            options[opt.name] = value;
                        }
                        else {
                            errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, id, expectedType));
                        }
                    }
                    else {
                        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_compiler_option_0, id));
                    }
                }
            }
            return options;
        }
        function getFiles() {
            var files = [];
            if (ts.hasProperty(json, "files")) {
                if (json["files"] instanceof Array) {
                    var files = ts.map(json["files"], function (s) { return ts.combinePaths(basePath, s); });
                }
            }
            else {
                var sysFiles = host.readDirectory(basePath, ".ts");
                for (var i = 0; i < sysFiles.length; i++) {
                    var name = sysFiles[i];
                    if (!ts.fileExtensionIs(name, ".d.ts") || !ts.contains(sysFiles, name.substr(0, name.length - 5) + ".ts")) {
                        files.push(name);
                    }
                }
            }
            return files;
        }
    }
    ts.parseConfigFile = parseConfigFile;
})(ts || (ts = {}));
/// <reference path="binder.ts" />
var ts;
(function (ts) {
    function getDeclarationOfKind(symbol, kind) {
        var declarations = symbol.declarations;
        for (var _i = 0; _i < declarations.length; _i++) {
            var declaration = declarations[_i];
            if (declaration.kind === kind) {
                return declaration;
            }
        }
        return undefined;
    }
    ts.getDeclarationOfKind = getDeclarationOfKind;
    var stringWriters = [];
    function getSingleLineStringWriter() {
        if (stringWriters.length == 0) {
            var str = "";
            var writeText = function (text) { return str += text; };
            return {
                string: function () { return str; },
                writeKeyword: writeText,
                writeOperator: writeText,
                writePunctuation: writeText,
                writeSpace: writeText,
                writeStringLiteral: writeText,
                writeParameter: writeText,
                writeSymbol: writeText,
                writeLine: function () { return str += " "; },
                increaseIndent: function () { },
                decreaseIndent: function () { },
                clear: function () { return str = ""; },
                trackSymbol: function () { }
            };
        }
        return stringWriters.pop();
    }
    ts.getSingleLineStringWriter = getSingleLineStringWriter;
    function releaseStringWriter(writer) {
        writer.clear();
        stringWriters.push(writer);
    }
    ts.releaseStringWriter = releaseStringWriter;
    function getFullWidth(node) {
        return node.end - node.pos;
    }
    ts.getFullWidth = getFullWidth;
    function containsParseError(node) {
        aggregateChildData(node);
        return (node.parserContextFlags & 64) !== 0;
    }
    ts.containsParseError = containsParseError;
    function aggregateChildData(node) {
        if (!(node.parserContextFlags & 128)) {
            var thisNodeOrAnySubNodesHasError = ((node.parserContextFlags & 32) !== 0) ||
                ts.forEachChild(node, containsParseError);
            if (thisNodeOrAnySubNodesHasError) {
                node.parserContextFlags |= 64;
            }
            node.parserContextFlags |= 128;
        }
    }
    function getSourceFileOfNode(node) {
        while (node && node.kind !== 228) {
            node = node.parent;
        }
        return node;
    }
    ts.getSourceFileOfNode = getSourceFileOfNode;
    function getStartPositionOfLine(line, sourceFile) {
        ts.Debug.assert(line >= 0);
        return ts.getLineStarts(sourceFile)[line];
    }
    ts.getStartPositionOfLine = getStartPositionOfLine;
    function nodePosToString(node) {
        var file = getSourceFileOfNode(node);
        var loc = ts.getLineAndCharacterOfPosition(file, node.pos);
        return file.fileName + "(" + (loc.line + 1) + "," + (loc.character + 1) + ")";
    }
    ts.nodePosToString = nodePosToString;
    function getStartPosOfNode(node) {
        return node.pos;
    }
    ts.getStartPosOfNode = getStartPosOfNode;
    function nodeIsMissing(node) {
        if (!node) {
            return true;
        }
        return node.pos === node.end && node.kind !== 1;
    }
    ts.nodeIsMissing = nodeIsMissing;
    function nodeIsPresent(node) {
        return !nodeIsMissing(node);
    }
    ts.nodeIsPresent = nodeIsPresent;
    function getTokenPosOfNode(node, sourceFile) {
        if (nodeIsMissing(node)) {
            return node.pos;
        }
        return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.pos);
    }
    ts.getTokenPosOfNode = getTokenPosOfNode;
    function getNonDecoratorTokenPosOfNode(node, sourceFile) {
        if (nodeIsMissing(node) || !node.decorators) {
            return getTokenPosOfNode(node, sourceFile);
        }
        return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.decorators.end);
    }
    ts.getNonDecoratorTokenPosOfNode = getNonDecoratorTokenPosOfNode;
    function getSourceTextOfNodeFromSourceFile(sourceFile, node) {
        if (nodeIsMissing(node)) {
            return "";
        }
        var text = sourceFile.text;
        return text.substring(ts.skipTrivia(text, node.pos), node.end);
    }
    ts.getSourceTextOfNodeFromSourceFile = getSourceTextOfNodeFromSourceFile;
    function getTextOfNodeFromSourceText(sourceText, node) {
        if (nodeIsMissing(node)) {
            return "";
        }
        return sourceText.substring(ts.skipTrivia(sourceText, node.pos), node.end);
    }
    ts.getTextOfNodeFromSourceText = getTextOfNodeFromSourceText;
    function getTextOfNode(node) {
        return getSourceTextOfNodeFromSourceFile(getSourceFileOfNode(node), node);
    }
    ts.getTextOfNode = getTextOfNode;
    function escapeIdentifier(identifier) {
        return identifier.length >= 2 && identifier.charCodeAt(0) === 95 && identifier.charCodeAt(1) === 95 ? "_" + identifier : identifier;
    }
    ts.escapeIdentifier = escapeIdentifier;
    function unescapeIdentifier(identifier) {
        return identifier.length >= 3 && identifier.charCodeAt(0) === 95 && identifier.charCodeAt(1) === 95 && identifier.charCodeAt(2) === 95 ? identifier.substr(1) : identifier;
    }
    ts.unescapeIdentifier = unescapeIdentifier;
    function makeIdentifierFromModuleName(moduleName) {
        return ts.getBaseFileName(moduleName).replace(/\W/g, "_");
    }
    ts.makeIdentifierFromModuleName = makeIdentifierFromModuleName;
    function isBlockOrCatchScoped(declaration) {
        return (getCombinedNodeFlags(declaration) & 12288) !== 0 ||
            isCatchClauseVariableDeclaration(declaration);
    }
    ts.isBlockOrCatchScoped = isBlockOrCatchScoped;
    function getEnclosingBlockScopeContainer(node) {
        var current = node.parent;
        while (current) {
            if (isFunctionLike(current)) {
                return current;
            }
            switch (current.kind) {
                case 228:
                case 208:
                case 224:
                case 206:
                case 187:
                case 188:
                case 189:
                    return current;
                case 180:
                    if (!isFunctionLike(current.parent)) {
                        return current;
                    }
            }
            current = current.parent;
        }
    }
    ts.getEnclosingBlockScopeContainer = getEnclosingBlockScopeContainer;
    function isCatchClauseVariableDeclaration(declaration) {
        return declaration &&
            declaration.kind === 199 &&
            declaration.parent &&
            declaration.parent.kind === 224;
    }
    ts.isCatchClauseVariableDeclaration = isCatchClauseVariableDeclaration;
    function declarationNameToString(name) {
        return getFullWidth(name) === 0 ? "(Missing)" : getTextOfNode(name);
    }
    ts.declarationNameToString = declarationNameToString;
    function createDiagnosticForNode(node, message, arg0, arg1, arg2) {
        var sourceFile = getSourceFileOfNode(node);
        var span = getErrorSpanForNode(sourceFile, node);
        return ts.createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2);
    }
    ts.createDiagnosticForNode = createDiagnosticForNode;
    function createDiagnosticForNodeFromMessageChain(node, messageChain) {
        var sourceFile = getSourceFileOfNode(node);
        var span = getErrorSpanForNode(sourceFile, node);
        return {
            file: sourceFile,
            start: span.start,
            length: span.length,
            code: messageChain.code,
            category: messageChain.category,
            messageText: messageChain.next ? messageChain : messageChain.messageText
        };
    }
    ts.createDiagnosticForNodeFromMessageChain = createDiagnosticForNodeFromMessageChain;
    function getSpanOfTokenAtPosition(sourceFile, pos) {
        var scanner = ts.createScanner(sourceFile.languageVersion, true, sourceFile.text, undefined, pos);
        scanner.scan();
        var start = scanner.getTokenPos();
        return ts.createTextSpanFromBounds(start, scanner.getTextPos());
    }
    ts.getSpanOfTokenAtPosition = getSpanOfTokenAtPosition;
    function getErrorSpanForNode(sourceFile, node) {
        var errorNode = node;
        switch (node.kind) {
            case 228:
                var pos_1 = ts.skipTrivia(sourceFile.text, 0, false);
                if (pos_1 === sourceFile.text.length) {
                    return ts.createTextSpan(0, 0);
                }
                return getSpanOfTokenAtPosition(sourceFile, pos_1);
            case 199:
            case 153:
            case 202:
            case 175:
            case 203:
            case 206:
            case 205:
            case 227:
            case 201:
            case 163:
                errorNode = node.name;
                break;
        }
        if (errorNode === undefined) {
            return getSpanOfTokenAtPosition(sourceFile, node.pos);
        }
        var pos = nodeIsMissing(errorNode)
            ? errorNode.pos
            : ts.skipTrivia(sourceFile.text, errorNode.pos);
        return ts.createTextSpanFromBounds(pos, errorNode.end);
    }
    ts.getErrorSpanForNode = getErrorSpanForNode;
    function isExternalModule(file) {
        return file.externalModuleIndicator !== undefined;
    }
    ts.isExternalModule = isExternalModule;
    function isDeclarationFile(file) {
        return (file.flags & 2048) !== 0;
    }
    ts.isDeclarationFile = isDeclarationFile;
    function isConstEnumDeclaration(node) {
        return node.kind === 205 && isConst(node);
    }
    ts.isConstEnumDeclaration = isConstEnumDeclaration;
    function walkUpBindingElementsAndPatterns(node) {
        while (node && (node.kind === 153 || isBindingPattern(node))) {
            node = node.parent;
        }
        return node;
    }
    function getCombinedNodeFlags(node) {
        node = walkUpBindingElementsAndPatterns(node);
        var flags = node.flags;
        if (node.kind === 199) {
            node = node.parent;
        }
        if (node && node.kind === 200) {
            flags |= node.flags;
            node = node.parent;
        }
        if (node && node.kind === 181) {
            flags |= node.flags;
        }
        return flags;
    }
    ts.getCombinedNodeFlags = getCombinedNodeFlags;
    function isConst(node) {
        return !!(getCombinedNodeFlags(node) & 8192);
    }
    ts.isConst = isConst;
    function isLet(node) {
        return !!(getCombinedNodeFlags(node) & 4096);
    }
    ts.isLet = isLet;
    function isPrologueDirective(node) {
        return node.kind === 183 && node.expression.kind === 8;
    }
    ts.isPrologueDirective = isPrologueDirective;
    function getLeadingCommentRangesOfNode(node, sourceFileOfNode) {
        if (node.kind === 130 || node.kind === 129) {
            return ts.concatenate(ts.getTrailingCommentRanges(sourceFileOfNode.text, node.pos), ts.getLeadingCommentRanges(sourceFileOfNode.text, node.pos));
        }
        else {
            return ts.getLeadingCommentRanges(sourceFileOfNode.text, node.pos);
        }
    }
    ts.getLeadingCommentRangesOfNode = getLeadingCommentRangesOfNode;
    function getJsDocComments(node, sourceFileOfNode) {
        return ts.filter(getLeadingCommentRangesOfNode(node, sourceFileOfNode), isJsDocComment);
        function isJsDocComment(comment) {
            return sourceFileOfNode.text.charCodeAt(comment.pos + 1) === 42 &&
                sourceFileOfNode.text.charCodeAt(comment.pos + 2) === 42 &&
                sourceFileOfNode.text.charCodeAt(comment.pos + 3) !== 47;
        }
    }
    ts.getJsDocComments = getJsDocComments;
    ts.fullTripleSlashReferencePathRegEx = /^(\/\/\/\s*<reference\s+path\s*=\s*)('|")(.+?)\2.*?\/>/;
    function forEachReturnStatement(body, visitor) {
        return traverse(body);
        function traverse(node) {
            switch (node.kind) {
                case 192:
                    return visitor(node);
                case 208:
                case 180:
                case 184:
                case 185:
                case 186:
                case 187:
                case 188:
                case 189:
                case 193:
                case 194:
                case 221:
                case 222:
                case 195:
                case 197:
                case 224:
                    return ts.forEachChild(node, traverse);
            }
        }
    }
    ts.forEachReturnStatement = forEachReturnStatement;
    function isVariableLike(node) {
        if (node) {
            switch (node.kind) {
                case 153:
                case 227:
                case 130:
                case 225:
                case 133:
                case 132:
                case 226:
                case 199:
                    return true;
            }
        }
        return false;
    }
    ts.isVariableLike = isVariableLike;
    function isAccessor(node) {
        if (node) {
            switch (node.kind) {
                case 137:
                case 138:
                    return true;
            }
        }
        return false;
    }
    ts.isAccessor = isAccessor;
    function isFunctionLike(node) {
        if (node) {
            switch (node.kind) {
                case 136:
                case 163:
                case 201:
                case 164:
                case 135:
                case 134:
                case 137:
                case 138:
                case 139:
                case 140:
                case 141:
                case 143:
                case 144:
                    return true;
            }
        }
        return false;
    }
    ts.isFunctionLike = isFunctionLike;
    function isFunctionBlock(node) {
        return node && node.kind === 180 && isFunctionLike(node.parent);
    }
    ts.isFunctionBlock = isFunctionBlock;
    function isObjectLiteralMethod(node) {
        return node && node.kind === 135 && node.parent.kind === 155;
    }
    ts.isObjectLiteralMethod = isObjectLiteralMethod;
    function getContainingFunction(node) {
        while (true) {
            node = node.parent;
            if (!node || isFunctionLike(node)) {
                return node;
            }
        }
    }
    ts.getContainingFunction = getContainingFunction;
    function getThisContainer(node, includeArrowFunctions) {
        while (true) {
            node = node.parent;
            if (!node) {
                return undefined;
            }
            switch (node.kind) {
                case 128:
                    if (node.parent.parent.kind === 202) {
                        return node;
                    }
                    node = node.parent;
                    break;
                case 131:
                    if (node.parent.kind === 130 && isClassElement(node.parent.parent)) {
                        node = node.parent.parent;
                    }
                    else if (isClassElement(node.parent)) {
                        node = node.parent;
                    }
                    break;
                case 164:
                    if (!includeArrowFunctions) {
                        continue;
                    }
                case 201:
                case 163:
                case 206:
                case 133:
                case 132:
                case 135:
                case 134:
                case 136:
                case 137:
                case 138:
                case 205:
                case 228:
                    return node;
            }
        }
    }
    ts.getThisContainer = getThisContainer;
    function getSuperContainer(node, includeFunctions) {
        while (true) {
            node = node.parent;
            if (!node)
                return node;
            switch (node.kind) {
                case 128:
                    if (node.parent.parent.kind === 202) {
                        return node;
                    }
                    node = node.parent;
                    break;
                case 131:
                    if (node.parent.kind === 130 && isClassElement(node.parent.parent)) {
                        node = node.parent.parent;
                    }
                    else if (isClassElement(node.parent)) {
                        node = node.parent;
                    }
                    break;
                case 201:
                case 163:
                case 164:
                    if (!includeFunctions) {
                        continue;
                    }
                case 133:
                case 132:
                case 135:
                case 134:
                case 136:
                case 137:
                case 138:
                    return node;
            }
        }
    }
    ts.getSuperContainer = getSuperContainer;
    function getInvokedExpression(node) {
        if (node.kind === 160) {
            return node.tag;
        }
        return node.expression;
    }
    ts.getInvokedExpression = getInvokedExpression;
    function nodeCanBeDecorated(node) {
        switch (node.kind) {
            case 202:
                return true;
            case 133:
                return node.parent.kind === 202;
            case 130:
                return node.parent.body && node.parent.parent.kind === 202;
            case 137:
            case 138:
            case 135:
                return node.body && node.parent.kind === 202;
        }
        return false;
    }
    ts.nodeCanBeDecorated = nodeCanBeDecorated;
    function nodeIsDecorated(node) {
        switch (node.kind) {
            case 202:
                if (node.decorators) {
                    return true;
                }
                return false;
            case 133:
            case 130:
                if (node.decorators) {
                    return true;
                }
                return false;
            case 137:
                if (node.body && node.decorators) {
                    return true;
                }
                return false;
            case 135:
            case 138:
                if (node.body && node.decorators) {
                    return true;
                }
                return false;
        }
        return false;
    }
    ts.nodeIsDecorated = nodeIsDecorated;
    function childIsDecorated(node) {
        switch (node.kind) {
            case 202:
                return ts.forEach(node.members, nodeOrChildIsDecorated);
            case 135:
            case 138:
                return ts.forEach(node.parameters, nodeIsDecorated);
        }
        return false;
    }
    ts.childIsDecorated = childIsDecorated;
    function nodeOrChildIsDecorated(node) {
        return nodeIsDecorated(node) || childIsDecorated(node);
    }
    ts.nodeOrChildIsDecorated = nodeOrChildIsDecorated;
    function isExpression(node) {
        switch (node.kind) {
            case 93:
            case 91:
            case 89:
            case 95:
            case 80:
            case 9:
            case 154:
            case 155:
            case 156:
            case 157:
            case 158:
            case 159:
            case 160:
            case 161:
            case 162:
            case 163:
            case 175:
            case 164:
            case 167:
            case 165:
            case 166:
            case 168:
            case 169:
            case 170:
            case 171:
            case 174:
            case 172:
            case 10:
            case 176:
                return true;
            case 127:
                while (node.parent.kind === 127) {
                    node = node.parent;
                }
                return node.parent.kind === 145;
            case 65:
                if (node.parent.kind === 145) {
                    return true;
                }
            case 7:
            case 8:
                var parent_1 = node.parent;
                switch (parent_1.kind) {
                    case 199:
                    case 130:
                    case 133:
                    case 132:
                    case 227:
                    case 225:
                    case 153:
                        return parent_1.initializer === node;
                    case 183:
                    case 184:
                    case 185:
                    case 186:
                    case 192:
                    case 193:
                    case 194:
                    case 221:
                    case 196:
                    case 194:
                        return parent_1.expression === node;
                    case 187:
                        var forStatement = parent_1;
                        return (forStatement.initializer === node && forStatement.initializer.kind !== 200) ||
                            forStatement.condition === node ||
                            forStatement.incrementor === node;
                    case 188:
                    case 189:
                        var forInStatement = parent_1;
                        return (forInStatement.initializer === node && forInStatement.initializer.kind !== 200) ||
                            forInStatement.expression === node;
                    case 161:
                        return node === parent_1.expression;
                    case 178:
                        return node === parent_1.expression;
                    case 128:
                        return node === parent_1.expression;
                    case 131:
                        return true;
                    default:
                        if (isExpression(parent_1)) {
                            return true;
                        }
                }
        }
        return false;
    }
    ts.isExpression = isExpression;
    function isInstantiatedModule(node, preserveConstEnums) {
        var moduleState = ts.getModuleInstanceState(node);
        return moduleState === 1 ||
            (preserveConstEnums && moduleState === 2);
    }
    ts.isInstantiatedModule = isInstantiatedModule;
    function isExternalModuleImportEqualsDeclaration(node) {
        return node.kind === 209 && node.moduleReference.kind === 220;
    }
    ts.isExternalModuleImportEqualsDeclaration = isExternalModuleImportEqualsDeclaration;
    function getExternalModuleImportEqualsDeclarationExpression(node) {
        ts.Debug.assert(isExternalModuleImportEqualsDeclaration(node));
        return node.moduleReference.expression;
    }
    ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
    function isInternalModuleImportEqualsDeclaration(node) {
        return node.kind === 209 && node.moduleReference.kind !== 220;
    }
    ts.isInternalModuleImportEqualsDeclaration = isInternalModuleImportEqualsDeclaration;
    function getExternalModuleName(node) {
        if (node.kind === 210) {
            return node.moduleSpecifier;
        }
        if (node.kind === 209) {
            var reference = node.moduleReference;
            if (reference.kind === 220) {
                return reference.expression;
            }
        }
        if (node.kind === 216) {
            return node.moduleSpecifier;
        }
    }
    ts.getExternalModuleName = getExternalModuleName;
    function hasDotDotDotToken(node) {
        return node && node.kind === 130 && node.dotDotDotToken !== undefined;
    }
    ts.hasDotDotDotToken = hasDotDotDotToken;
    function hasQuestionToken(node) {
        if (node) {
            switch (node.kind) {
                case 130:
                    return node.questionToken !== undefined;
                case 135:
                case 134:
                    return node.questionToken !== undefined;
                case 226:
                case 225:
                case 133:
                case 132:
                    return node.questionToken !== undefined;
            }
        }
        return false;
    }
    ts.hasQuestionToken = hasQuestionToken;
    function hasRestParameters(s) {
        return s.parameters.length > 0 && ts.lastOrUndefined(s.parameters).dotDotDotToken !== undefined;
    }
    ts.hasRestParameters = hasRestParameters;
    function isLiteralKind(kind) {
        return 7 <= kind && kind <= 10;
    }
    ts.isLiteralKind = isLiteralKind;
    function isTextualLiteralKind(kind) {
        return kind === 8 || kind === 10;
    }
    ts.isTextualLiteralKind = isTextualLiteralKind;
    function isTemplateLiteralKind(kind) {
        return 10 <= kind && kind <= 13;
    }
    ts.isTemplateLiteralKind = isTemplateLiteralKind;
    function isBindingPattern(node) {
        return !!node && (node.kind === 152 || node.kind === 151);
    }
    ts.isBindingPattern = isBindingPattern;
    function isInAmbientContext(node) {
        while (node) {
            if (node.flags & (2 | 2048)) {
                return true;
            }
            node = node.parent;
        }
        return false;
    }
    ts.isInAmbientContext = isInAmbientContext;
    function isDeclaration(node) {
        switch (node.kind) {
            case 164:
            case 153:
            case 202:
            case 136:
            case 205:
            case 227:
            case 218:
            case 201:
            case 163:
            case 137:
            case 211:
            case 209:
            case 214:
            case 203:
            case 135:
            case 134:
            case 206:
            case 212:
            case 130:
            case 225:
            case 133:
            case 132:
            case 138:
            case 226:
            case 204:
            case 129:
            case 199:
                return true;
        }
        return false;
    }
    ts.isDeclaration = isDeclaration;
    function isStatement(n) {
        switch (n.kind) {
            case 191:
            case 190:
            case 198:
            case 185:
            case 183:
            case 182:
            case 188:
            case 189:
            case 187:
            case 184:
            case 195:
            case 192:
            case 194:
            case 94:
            case 197:
            case 181:
            case 186:
            case 193:
            case 215:
                return true;
            default:
                return false;
        }
    }
    ts.isStatement = isStatement;
    function isClassElement(n) {
        switch (n.kind) {
            case 136:
            case 133:
            case 135:
            case 137:
            case 138:
            case 134:
            case 141:
                return true;
            default:
                return false;
        }
    }
    ts.isClassElement = isClassElement;
    function isDeclarationName(name) {
        if (name.kind !== 65 && name.kind !== 8 && name.kind !== 7) {
            return false;
        }
        var parent = name.parent;
        if (parent.kind === 214 || parent.kind === 218) {
            if (parent.propertyName) {
                return true;
            }
        }
        if (isDeclaration(parent)) {
            return parent.name === name;
        }
        return false;
    }
    ts.isDeclarationName = isDeclarationName;
    function isAliasSymbolDeclaration(node) {
        return node.kind === 209 ||
            node.kind === 211 && !!node.name ||
            node.kind === 212 ||
            node.kind === 214 ||
            node.kind === 218 ||
            node.kind === 215 && node.expression.kind === 65;
    }
    ts.isAliasSymbolDeclaration = isAliasSymbolDeclaration;
    function getClassExtendsHeritageClauseElement(node) {
        var heritageClause = getHeritageClause(node.heritageClauses, 79);
        return heritageClause && heritageClause.types.length > 0 ? heritageClause.types[0] : undefined;
    }
    ts.getClassExtendsHeritageClauseElement = getClassExtendsHeritageClauseElement;
    function getClassImplementsHeritageClauseElements(node) {
        var heritageClause = getHeritageClause(node.heritageClauses, 102);
        return heritageClause ? heritageClause.types : undefined;
    }
    ts.getClassImplementsHeritageClauseElements = getClassImplementsHeritageClauseElements;
    function getInterfaceBaseTypeNodes(node) {
        var heritageClause = getHeritageClause(node.heritageClauses, 79);
        return heritageClause ? heritageClause.types : undefined;
    }
    ts.getInterfaceBaseTypeNodes = getInterfaceBaseTypeNodes;
    function getHeritageClause(clauses, kind) {
        if (clauses) {
            for (var _i = 0; _i < clauses.length; _i++) {
                var clause = clauses[_i];
                if (clause.token === kind) {
                    return clause;
                }
            }
        }
        return undefined;
    }
    ts.getHeritageClause = getHeritageClause;
    function tryResolveScriptReference(host, sourceFile, reference) {
        if (!host.getCompilerOptions().noResolve) {
            var referenceFileName = ts.isRootedDiskPath(reference.fileName) ? reference.fileName : ts.combinePaths(ts.getDirectoryPath(sourceFile.fileName), reference.fileName);
            referenceFileName = ts.getNormalizedAbsolutePath(referenceFileName, host.getCurrentDirectory());
            return host.getSourceFile(referenceFileName);
        }
    }
    ts.tryResolveScriptReference = tryResolveScriptReference;
    function getAncestor(node, kind) {
        while (node) {
            if (node.kind === kind) {
                return node;
            }
            node = node.parent;
        }
        return undefined;
    }
    ts.getAncestor = getAncestor;
    function getFileReferenceFromReferencePath(comment, commentRange) {
        var simpleReferenceRegEx = /^\/\/\/\s*<reference\s+/gim;
        var isNoDefaultLibRegEx = /^(\/\/\/\s*<reference\s+no-default-lib\s*=\s*)('|")(.+?)\2\s*\/>/gim;
        if (simpleReferenceRegEx.exec(comment)) {
            if (isNoDefaultLibRegEx.exec(comment)) {
                return {
                    isNoDefaultLib: true
                };
            }
            else {
                var matchResult = ts.fullTripleSlashReferencePathRegEx.exec(comment);
                if (matchResult) {
                    var start = commentRange.pos;
                    var end = commentRange.end;
                    return {
                        fileReference: {
                            pos: start,
                            end: end,
                            fileName: matchResult[3]
                        },
                        isNoDefaultLib: false
                    };
                }
                else {
                    return {
                        diagnosticMessage: ts.Diagnostics.Invalid_reference_directive_syntax,
                        isNoDefaultLib: false
                    };
                }
            }
        }
        return undefined;
    }
    ts.getFileReferenceFromReferencePath = getFileReferenceFromReferencePath;
    function isKeyword(token) {
        return 66 <= token && token <= 126;
    }
    ts.isKeyword = isKeyword;
    function isTrivia(token) {
        return 2 <= token && token <= 6;
    }
    ts.isTrivia = isTrivia;
    function hasDynamicName(declaration) {
        return declaration.name &&
            declaration.name.kind === 128 &&
            !isWellKnownSymbolSyntactically(declaration.name.expression);
    }
    ts.hasDynamicName = hasDynamicName;
    function isWellKnownSymbolSyntactically(node) {
        return node.kind === 156 && isESSymbolIdentifier(node.expression);
    }
    ts.isWellKnownSymbolSyntactically = isWellKnownSymbolSyntactically;
    function getPropertyNameForPropertyNameNode(name) {
        if (name.kind === 65 || name.kind === 8 || name.kind === 7) {
            return name.text;
        }
        if (name.kind === 128) {
            var nameExpression = name.expression;
            if (isWellKnownSymbolSyntactically(nameExpression)) {
                var rightHandSideName = nameExpression.name.text;
                return getPropertyNameForKnownSymbolName(rightHandSideName);
            }
        }
        return undefined;
    }
    ts.getPropertyNameForPropertyNameNode = getPropertyNameForPropertyNameNode;
    function getPropertyNameForKnownSymbolName(symbolName) {
        return "__@" + symbolName;
    }
    ts.getPropertyNameForKnownSymbolName = getPropertyNameForKnownSymbolName;
    function isESSymbolIdentifier(node) {
        return node.kind === 65 && node.text === "Symbol";
    }
    ts.isESSymbolIdentifier = isESSymbolIdentifier;
    function isModifier(token) {
        switch (token) {
            case 108:
            case 106:
            case 107:
            case 109:
            case 78:
            case 115:
            case 70:
            case 73:
                return true;
        }
        return false;
    }
    ts.isModifier = isModifier;
    function isParameterDeclaration(node) {
        var root = getRootDeclaration(node);
        return root.kind === 130;
    }
    ts.isParameterDeclaration = isParameterDeclaration;
    function getRootDeclaration(node) {
        while (node.kind === 153) {
            node = node.parent.parent;
        }
        return node;
    }
    ts.getRootDeclaration = getRootDeclaration;
    function nodeStartsNewLexicalEnvironment(n) {
        return isFunctionLike(n) || n.kind === 206 || n.kind === 228;
    }
    ts.nodeStartsNewLexicalEnvironment = nodeStartsNewLexicalEnvironment;
    function nodeIsSynthesized(node) {
        return node.pos === -1;
    }
    ts.nodeIsSynthesized = nodeIsSynthesized;
    function createSynthesizedNode(kind, startsOnNewLine) {
        var node = ts.createNode(kind);
        node.pos = -1;
        node.end = -1;
        node.startsOnNewLine = startsOnNewLine;
        return node;
    }
    ts.createSynthesizedNode = createSynthesizedNode;
    function createSynthesizedNodeArray() {
        var array = [];
        array.pos = -1;
        array.end = -1;
        return array;
    }
    ts.createSynthesizedNodeArray = createSynthesizedNodeArray;
    function createDiagnosticCollection() {
        var nonFileDiagnostics = [];
        var fileDiagnostics = {};
        var diagnosticsModified = false;
        var modificationCount = 0;
        return {
            add: add,
            getGlobalDiagnostics: getGlobalDiagnostics,
            getDiagnostics: getDiagnostics,
            getModificationCount: getModificationCount
        };
        function getModificationCount() {
            return modificationCount;
        }
        function add(diagnostic) {
            var diagnostics;
            if (diagnostic.file) {
                diagnostics = fileDiagnostics[diagnostic.file.fileName];
                if (!diagnostics) {
                    diagnostics = [];
                    fileDiagnostics[diagnostic.file.fileName] = diagnostics;
                }
            }
            else {
                diagnostics = nonFileDiagnostics;
            }
            diagnostics.push(diagnostic);
            diagnosticsModified = true;
            modificationCount++;
        }
        function getGlobalDiagnostics() {
            sortAndDeduplicate();
            return nonFileDiagnostics;
        }
        function getDiagnostics(fileName) {
            sortAndDeduplicate();
            if (fileName) {
                return fileDiagnostics[fileName] || [];
            }
            var allDiagnostics = [];
            function pushDiagnostic(d) {
                allDiagnostics.push(d);
            }
            ts.forEach(nonFileDiagnostics, pushDiagnostic);
            for (var key in fileDiagnostics) {
                if (ts.hasProperty(fileDiagnostics, key)) {
                    ts.forEach(fileDiagnostics[key], pushDiagnostic);
                }
            }
            return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
        }
        function sortAndDeduplicate() {
            if (!diagnosticsModified) {
                return;
            }
            diagnosticsModified = false;
            nonFileDiagnostics = ts.sortAndDeduplicateDiagnostics(nonFileDiagnostics);
            for (var key in fileDiagnostics) {
                if (ts.hasProperty(fileDiagnostics, key)) {
                    fileDiagnostics[key] = ts.sortAndDeduplicateDiagnostics(fileDiagnostics[key]);
                }
            }
        }
    }
    ts.createDiagnosticCollection = createDiagnosticCollection;
    var escapedCharsRegExp = /[\\\"\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g;
    var escapedCharsMap = {
        "\0": "\\0",
        "\t": "\\t",
        "\v": "\\v",
        "\f": "\\f",
        "\b": "\\b",
        "\r": "\\r",
        "\n": "\\n",
        "\\": "\\\\",
        "\"": "\\\"",
        "\u2028": "\\u2028",
        "\u2029": "\\u2029",
        "\u0085": "\\u0085"
    };
    function escapeString(s) {
        s = escapedCharsRegExp.test(s) ? s.replace(escapedCharsRegExp, getReplacement) : s;
        return s;
        function getReplacement(c) {
            return escapedCharsMap[c] || get16BitUnicodeEscapeSequence(c.charCodeAt(0));
        }
    }
    ts.escapeString = escapeString;
    function get16BitUnicodeEscapeSequence(charCode) {
        var hexCharCode = charCode.toString(16).toUpperCase();
        var paddedHexCode = ("0000" + hexCharCode).slice(-4);
        return "\\u" + paddedHexCode;
    }
    var nonAsciiCharacters = /[^\u0000-\u007F]/g;
    function escapeNonAsciiCharacters(s) {
        return nonAsciiCharacters.test(s) ?
            s.replace(nonAsciiCharacters, function (c) { return get16BitUnicodeEscapeSequence(c.charCodeAt(0)); }) :
            s;
    }
    ts.escapeNonAsciiCharacters = escapeNonAsciiCharacters;
    var indentStrings = ["", "    "];
    function getIndentString(level) {
        if (indentStrings[level] === undefined) {
            indentStrings[level] = getIndentString(level - 1) + indentStrings[1];
        }
        return indentStrings[level];
    }
    ts.getIndentString = getIndentString;
    function getIndentSize() {
        return indentStrings[1].length;
    }
    ts.getIndentSize = getIndentSize;
    function createTextWriter(newLine) {
        var output = "";
        var indent = 0;
        var lineStart = true;
        var lineCount = 0;
        var linePos = 0;
        function write(s) {
            if (s && s.length) {
                if (lineStart) {
                    output += getIndentString(indent);
                    lineStart = false;
                }
                output += s;
            }
        }
        function rawWrite(s) {
            if (s !== undefined) {
                if (lineStart) {
                    lineStart = false;
                }
                output += s;
            }
        }
        function writeLiteral(s) {
            if (s && s.length) {
                write(s);
                var lineStartsOfS = ts.computeLineStarts(s);
                if (lineStartsOfS.length > 1) {
                    lineCount = lineCount + lineStartsOfS.length - 1;
                    linePos = output.length - s.length + ts.lastOrUndefined(lineStartsOfS);
                }
            }
        }
        function writeLine() {
            if (!lineStart) {
                output += newLine;
                lineCount++;
                linePos = output.length;
                lineStart = true;
            }
        }
        function writeTextOfNode(sourceFile, node) {
            write(getSourceTextOfNodeFromSourceFile(sourceFile, node));
        }
        return {
            write: write,
            rawWrite: rawWrite,
            writeTextOfNode: writeTextOfNode,
            writeLiteral: writeLiteral,
            writeLine: writeLine,
            increaseIndent: function () { return indent++; },
            decreaseIndent: function () { return indent--; },
            getIndent: function () { return indent; },
            getTextPos: function () { return output.length; },
            getLine: function () { return lineCount + 1; },
            getColumn: function () { return lineStart ? indent * getIndentSize() + 1 : output.length - linePos + 1; },
            getText: function () { return output; }
        };
    }
    ts.createTextWriter = createTextWriter;
    function getOwnEmitOutputFilePath(sourceFile, host, extension) {
        var compilerOptions = host.getCompilerOptions();
        var emitOutputFilePathWithoutExtension;
        if (compilerOptions.outDir) {
            emitOutputFilePathWithoutExtension = ts.removeFileExtension(getSourceFilePathInNewDir(sourceFile, host, compilerOptions.outDir));
        }
        else {
            emitOutputFilePathWithoutExtension = ts.removeFileExtension(sourceFile.fileName);
        }
        return emitOutputFilePathWithoutExtension + extension;
    }
    ts.getOwnEmitOutputFilePath = getOwnEmitOutputFilePath;
    function getSourceFilePathInNewDir(sourceFile, host, newDirPath) {
        var sourceFilePath = ts.getNormalizedAbsolutePath(sourceFile.fileName, host.getCurrentDirectory());
        sourceFilePath = sourceFilePath.replace(host.getCommonSourceDirectory(), "");
        return ts.combinePaths(newDirPath, sourceFilePath);
    }
    ts.getSourceFilePathInNewDir = getSourceFilePathInNewDir;
    function writeFile(host, diagnostics, fileName, data, writeByteOrderMark) {
        host.writeFile(fileName, data, writeByteOrderMark, function (hostErrorMessage) {
            diagnostics.push(ts.createCompilerDiagnostic(ts.Diagnostics.Could_not_write_file_0_Colon_1, fileName, hostErrorMessage));
        });
    }
    ts.writeFile = writeFile;
    function getLineOfLocalPosition(currentSourceFile, pos) {
        return ts.getLineAndCharacterOfPosition(currentSourceFile, pos).line;
    }
    ts.getLineOfLocalPosition = getLineOfLocalPosition;
    function getFirstConstructorWithBody(node) {
        return ts.forEach(node.members, function (member) {
            if (member.kind === 136 && nodeIsPresent(member.body)) {
                return member;
            }
        });
    }
    ts.getFirstConstructorWithBody = getFirstConstructorWithBody;
    function shouldEmitToOwnFile(sourceFile, compilerOptions) {
        if (!isDeclarationFile(sourceFile)) {
            if ((isExternalModule(sourceFile) || !compilerOptions.out)) {
                return compilerOptions.separateCompilation || !ts.fileExtensionIs(sourceFile.fileName, ".js");
            }
            return false;
        }
        return false;
    }
    ts.shouldEmitToOwnFile = shouldEmitToOwnFile;
    function getAllAccessorDeclarations(declarations, accessor) {
        var firstAccessor;
        var secondAccessor;
        var getAccessor;
        var setAccessor;
        if (hasDynamicName(accessor)) {
            firstAccessor = accessor;
            if (accessor.kind === 137) {
                getAccessor = accessor;
            }
            else if (accessor.kind === 138) {
                setAccessor = accessor;
            }
            else {
                ts.Debug.fail("Accessor has wrong kind");
            }
        }
        else {
            ts.forEach(declarations, function (member) {
                if ((member.kind === 137 || member.kind === 138)
                    && (member.flags & 128) === (accessor.flags & 128)) {
                    var memberName = getPropertyNameForPropertyNameNode(member.name);
                    var accessorName = getPropertyNameForPropertyNameNode(accessor.name);
                    if (memberName === accessorName) {
                        if (!firstAccessor) {
                            firstAccessor = member;
                        }
                        else if (!secondAccessor) {
                            secondAccessor = member;
                        }
                        if (member.kind === 137 && !getAccessor) {
                            getAccessor = member;
                        }
                        if (member.kind === 138 && !setAccessor) {
                            setAccessor = member;
                        }
                    }
                }
            });
        }
        return {
            firstAccessor: firstAccessor,
            secondAccessor: secondAccessor,
            getAccessor: getAccessor,
            setAccessor: setAccessor
        };
    }
    ts.getAllAccessorDeclarations = getAllAccessorDeclarations;
    function emitNewLineBeforeLeadingComments(currentSourceFile, writer, node, leadingComments) {
        if (leadingComments && leadingComments.length && node.pos !== leadingComments[0].pos &&
            getLineOfLocalPosition(currentSourceFile, node.pos) !== getLineOfLocalPosition(currentSourceFile, leadingComments[0].pos)) {
            writer.writeLine();
        }
    }
    ts.emitNewLineBeforeLeadingComments = emitNewLineBeforeLeadingComments;
    function emitComments(currentSourceFile, writer, comments, trailingSeparator, newLine, writeComment) {
        var emitLeadingSpace = !trailingSeparator;
        ts.forEach(comments, function (comment) {
            if (emitLeadingSpace) {
                writer.write(" ");
                emitLeadingSpace = false;
            }
            writeComment(currentSourceFile, writer, comment, newLine);
            if (comment.hasTrailingNewLine) {
                writer.writeLine();
            }
            else if (trailingSeparator) {
                writer.write(" ");
            }
            else {
                emitLeadingSpace = true;
            }
        });
    }
    ts.emitComments = emitComments;
    function writeCommentRange(currentSourceFile, writer, comment, newLine) {
        if (currentSourceFile.text.charCodeAt(comment.pos + 1) === 42) {
            var firstCommentLineAndCharacter = ts.getLineAndCharacterOfPosition(currentSourceFile, comment.pos);
            var lineCount = ts.getLineStarts(currentSourceFile).length;
            var firstCommentLineIndent;
            for (var pos = comment.pos, currentLine = firstCommentLineAndCharacter.line; pos < comment.end; currentLine++) {
                var nextLineStart = (currentLine + 1) === lineCount
                    ? currentSourceFile.text.length + 1
                    : getStartPositionOfLine(currentLine + 1, currentSourceFile);
                if (pos !== comment.pos) {
                    if (firstCommentLineIndent === undefined) {
                        firstCommentLineIndent = calculateIndent(getStartPositionOfLine(firstCommentLineAndCharacter.line, currentSourceFile), comment.pos);
                    }
                    var currentWriterIndentSpacing = writer.getIndent() * getIndentSize();
                    var spacesToEmit = currentWriterIndentSpacing - firstCommentLineIndent + calculateIndent(pos, nextLineStart);
                    if (spacesToEmit > 0) {
                        var numberOfSingleSpacesToEmit = spacesToEmit % getIndentSize();
                        var indentSizeSpaceString = getIndentString((spacesToEmit - numberOfSingleSpacesToEmit) / getIndentSize());
                        writer.rawWrite(indentSizeSpaceString);
                        while (numberOfSingleSpacesToEmit) {
                            writer.rawWrite(" ");
                            numberOfSingleSpacesToEmit--;
                        }
                    }
                    else {
                        writer.rawWrite("");
                    }
                }
                writeTrimmedCurrentLine(pos, nextLineStart);
                pos = nextLineStart;
            }
        }
        else {
            writer.write(currentSourceFile.text.substring(comment.pos, comment.end));
        }
        function writeTrimmedCurrentLine(pos, nextLineStart) {
            var end = Math.min(comment.end, nextLineStart - 1);
            var currentLineText = currentSourceFile.text.substring(pos, end).replace(/^\s+|\s+$/g, '');
            if (currentLineText) {
                writer.write(currentLineText);
                if (end !== comment.end) {
                    writer.writeLine();
                }
            }
            else {
                writer.writeLiteral(newLine);
            }
        }
        function calculateIndent(pos, end) {
            var currentLineIndent = 0;
            for (; pos < end && ts.isWhiteSpace(currentSourceFile.text.charCodeAt(pos)); pos++) {
                if (currentSourceFile.text.charCodeAt(pos) === 9) {
                    currentLineIndent += getIndentSize() - (currentLineIndent % getIndentSize());
                }
                else {
                    currentLineIndent++;
                }
            }
            return currentLineIndent;
        }
    }
    ts.writeCommentRange = writeCommentRange;
    function modifierToFlag(token) {
        switch (token) {
            case 109: return 128;
            case 108: return 16;
            case 107: return 64;
            case 106: return 32;
            case 78: return 1;
            case 115: return 2;
            case 70: return 8192;
            case 73: return 256;
        }
        return 0;
    }
    ts.modifierToFlag = modifierToFlag;
    function isLeftHandSideExpression(expr) {
        if (expr) {
            switch (expr.kind) {
                case 156:
                case 157:
                case 159:
                case 158:
                case 160:
                case 154:
                case 162:
                case 155:
                case 175:
                case 163:
                case 65:
                case 9:
                case 7:
                case 8:
                case 10:
                case 172:
                case 80:
                case 89:
                case 93:
                case 95:
                case 91:
                    return true;
            }
        }
        return false;
    }
    ts.isLeftHandSideExpression = isLeftHandSideExpression;
    function isAssignmentOperator(token) {
        return token >= 53 && token <= 64;
    }
    ts.isAssignmentOperator = isAssignmentOperator;
    function isSupportedExpressionWithTypeArguments(node) {
        return isSupportedExpressionWithTypeArgumentsRest(node.expression);
    }
    ts.isSupportedExpressionWithTypeArguments = isSupportedExpressionWithTypeArguments;
    function isSupportedExpressionWithTypeArgumentsRest(node) {
        if (node.kind === 65) {
            return true;
        }
        else if (node.kind === 156) {
            return isSupportedExpressionWithTypeArgumentsRest(node.expression);
        }
        else {
            return false;
        }
    }
    function isRightSideOfQualifiedNameOrPropertyAccess(node) {
        return (node.parent.kind === 127 && node.parent.right === node) ||
            (node.parent.kind === 156 && node.parent.name === node);
    }
    ts.isRightSideOfQualifiedNameOrPropertyAccess = isRightSideOfQualifiedNameOrPropertyAccess;
    function getLocalSymbolForExportDefault(symbol) {
        return symbol && symbol.valueDeclaration && (symbol.valueDeclaration.flags & 256) ? symbol.valueDeclaration.localSymbol : undefined;
    }
    ts.getLocalSymbolForExportDefault = getLocalSymbolForExportDefault;
    function getExpandedCharCodes(input) {
        var output = [];
        var length = input.length;
        var leadSurrogate = undefined;
        for (var i = 0; i < length; i++) {
            var charCode = input.charCodeAt(i);
            if (charCode < 0x80) {
                output.push(charCode);
            }
            else if (charCode < 0x800) {
                output.push((charCode >> 6) | 192);
                output.push((charCode & 63) | 128);
            }
            else if (charCode < 0x10000) {
                output.push((charCode >> 12) | 224);
                output.push(((charCode >> 6) & 63) | 128);
                output.push((charCode & 63) | 128);
            }
            else if (charCode < 0x20000) {
                output.push((charCode >> 18) | 240);
                output.push(((charCode >> 12) & 63) | 128);
                output.push(((charCode >> 6) & 63) | 128);
                output.push((charCode & 63) | 128);
            }
            else {
                ts.Debug.assert(false, "Unexpected code point");
            }
        }
        return output;
    }
    var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    function convertToBase64(input) {
        var result = "";
        var charCodes = getExpandedCharCodes(input);
        var i = 0;
        var length = charCodes.length;
        var byte1, byte2, byte3, byte4;
        while (i < length) {
            byte1 = charCodes[i] >> 2;
            byte2 = (charCodes[i] & 3) << 4 | charCodes[i + 1] >> 4;
            byte3 = (charCodes[i + 1] & 15) << 2 | charCodes[i + 2] >> 6;
            byte4 = charCodes[i + 2] & 63;
            if (i + 1 >= length) {
                byte3 = byte4 = 64;
            }
            else if (i + 2 >= length) {
                byte4 = 64;
            }
            result += base64Digits.charAt(byte1) + base64Digits.charAt(byte2) + base64Digits.charAt(byte3) + base64Digits.charAt(byte4);
            i += 3;
        }
        return result;
    }
    ts.convertToBase64 = convertToBase64;
})(ts || (ts = {}));
var ts;
(function (ts) {
    function getDefaultLibFileName(options) {
        return options.target === 2 ? "lib.es6.d.ts" : "lib.d.ts";
    }
    ts.getDefaultLibFileName = getDefaultLibFileName;
    function textSpanEnd(span) {
        return span.start + span.length;
    }
    ts.textSpanEnd = textSpanEnd;
    function textSpanIsEmpty(span) {
        return span.length === 0;
    }
    ts.textSpanIsEmpty = textSpanIsEmpty;
    function textSpanContainsPosition(span, position) {
        return position >= span.start && position < textSpanEnd(span);
    }
    ts.textSpanContainsPosition = textSpanContainsPosition;
    function textSpanContainsTextSpan(span, other) {
        return other.start >= span.start && textSpanEnd(other) <= textSpanEnd(span);
    }
    ts.textSpanContainsTextSpan = textSpanContainsTextSpan;
    function textSpanOverlapsWith(span, other) {
        var overlapStart = Math.max(span.start, other.start);
        var overlapEnd = Math.min(textSpanEnd(span), textSpanEnd(other));
        return overlapStart < overlapEnd;
    }
    ts.textSpanOverlapsWith = textSpanOverlapsWith;
    function textSpanOverlap(span1, span2) {
        var overlapStart = Math.max(span1.start, span2.start);
        var overlapEnd = Math.min(textSpanEnd(span1), textSpanEnd(span2));
        if (overlapStart < overlapEnd) {
            return createTextSpanFromBounds(overlapStart, overlapEnd);
        }
        return undefined;
    }
    ts.textSpanOverlap = textSpanOverlap;
    function textSpanIntersectsWithTextSpan(span, other) {
        return other.start <= textSpanEnd(span) && textSpanEnd(other) >= span.start;
    }
    ts.textSpanIntersectsWithTextSpan = textSpanIntersectsWithTextSpan;
    function textSpanIntersectsWith(span, start, length) {
        var end = start + length;
        return start <= textSpanEnd(span) && end >= span.start;
    }
    ts.textSpanIntersectsWith = textSpanIntersectsWith;
    function textSpanIntersectsWithPosition(span, position) {
        return position <= textSpanEnd(span) && position >= span.start;
    }
    ts.textSpanIntersectsWithPosition = textSpanIntersectsWithPosition;
    function textSpanIntersection(span1, span2) {
        var intersectStart = Math.max(span1.start, span2.start);
        var intersectEnd = Math.min(textSpanEnd(span1), textSpanEnd(span2));
        if (intersectStart <= intersectEnd) {
            return createTextSpanFromBounds(intersectStart, intersectEnd);
        }
        return undefined;
    }
    ts.textSpanIntersection = textSpanIntersection;
    function createTextSpan(start, length) {
        if (start < 0) {
            throw new Error("start < 0");
        }
        if (length < 0) {
            throw new Error("length < 0");
        }
        return { start: start, length: length };
    }
    ts.createTextSpan = createTextSpan;
    function createTextSpanFromBounds(start, end) {
        return createTextSpan(start, end - start);
    }
    ts.createTextSpanFromBounds = createTextSpanFromBounds;
    function textChangeRangeNewSpan(range) {
        return createTextSpan(range.span.start, range.newLength);
    }
    ts.textChangeRangeNewSpan = textChangeRangeNewSpan;
    function textChangeRangeIsUnchanged(range) {
        return textSpanIsEmpty(range.span) && range.newLength === 0;
    }
    ts.textChangeRangeIsUnchanged = textChangeRangeIsUnchanged;
    function createTextChangeRange(span, newLength) {
        if (newLength < 0) {
            throw new Error("newLength < 0");
        }
        return { span: span, newLength: newLength };
    }
    ts.createTextChangeRange = createTextChangeRange;
    ts.unchangedTextChangeRange = createTextChangeRange(createTextSpan(0, 0), 0);
    function collapseTextChangeRangesAcrossMultipleVersions(changes) {
        if (changes.length === 0) {
            return ts.unchangedTextChangeRange;
        }
        if (changes.length === 1) {
            return changes[0];
        }
        var change0 = changes[0];
        var oldStartN = change0.span.start;
        var oldEndN = textSpanEnd(change0.span);
        var newEndN = oldStartN + change0.newLength;
        for (var i = 1; i < changes.length; i++) {
            var nextChange = changes[i];
            var oldStart1 = oldStartN;
            var oldEnd1 = oldEndN;
            var newEnd1 = newEndN;
            var oldStart2 = nextChange.span.start;
            var oldEnd2 = textSpanEnd(nextChange.span);
            var newEnd2 = oldStart2 + nextChange.newLength;
            oldStartN = Math.min(oldStart1, oldStart2);
            oldEndN = Math.max(oldEnd1, oldEnd1 + (oldEnd2 - newEnd1));
            newEndN = Math.max(newEnd2, newEnd2 + (newEnd1 - oldEnd2));
        }
        return createTextChangeRange(createTextSpanFromBounds(oldStartN, oldEndN), newEndN - oldStartN);
    }
    ts.collapseTextChangeRangesAcrossMultipleVersions = collapseTextChangeRangesAcrossMultipleVersions;
})(ts || (ts = {}));
/// <reference path="scanner.ts"/>
/// <reference path="utilities.ts"/>
var ts;
(function (ts) {
    var nodeConstructors = new Array(230);
    ts.parseTime = 0;
    function getNodeConstructor(kind) {
        return nodeConstructors[kind] || (nodeConstructors[kind] = ts.objectAllocator.getNodeConstructor(kind));
    }
    ts.getNodeConstructor = getNodeConstructor;
    function createNode(kind) {
        return new (getNodeConstructor(kind))();
    }
    ts.createNode = createNode;
    function visitNode(cbNode, node) {
        if (node) {
            return cbNode(node);
        }
    }
    function visitNodeArray(cbNodes, nodes) {
        if (nodes) {
            return cbNodes(nodes);
        }
    }
    function visitEachNode(cbNode, nodes) {
        if (nodes) {
            for (var _i = 0; _i < nodes.length; _i++) {
                var node = nodes[_i];
                var result = cbNode(node);
                if (result) {
                    return result;
                }
            }
        }
    }
    function forEachChild(node, cbNode, cbNodeArray) {
        if (!node) {
            return;
        }
        var visitNodes = cbNodeArray ? visitNodeArray : visitEachNode;
        var cbNodes = cbNodeArray || cbNode;
        switch (node.kind) {
            case 127:
                return visitNode(cbNode, node.left) ||
                    visitNode(cbNode, node.right);
            case 129:
                return visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.constraint) ||
                    visitNode(cbNode, node.expression);
            case 130:
            case 133:
            case 132:
            case 225:
            case 226:
            case 199:
            case 153:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.propertyName) ||
                    visitNode(cbNode, node.dotDotDotToken) ||
                    visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.questionToken) ||
                    visitNode(cbNode, node.type) ||
                    visitNode(cbNode, node.initializer);
            case 143:
            case 144:
            case 139:
            case 140:
            case 141:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNodes(cbNodes, node.typeParameters) ||
                    visitNodes(cbNodes, node.parameters) ||
                    visitNode(cbNode, node.type);
            case 135:
            case 134:
            case 136:
            case 137:
            case 138:
            case 163:
            case 201:
            case 164:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.asteriskToken) ||
                    visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.questionToken) ||
                    visitNodes(cbNodes, node.typeParameters) ||
                    visitNodes(cbNodes, node.parameters) ||
                    visitNode(cbNode, node.type) ||
                    visitNode(cbNode, node.equalsGreaterThanToken) ||
                    visitNode(cbNode, node.body);
            case 142:
                return visitNode(cbNode, node.typeName) ||
                    visitNodes(cbNodes, node.typeArguments);
            case 145:
                return visitNode(cbNode, node.exprName);
            case 146:
                return visitNodes(cbNodes, node.members);
            case 147:
                return visitNode(cbNode, node.elementType);
            case 148:
                return visitNodes(cbNodes, node.elementTypes);
            case 149:
                return visitNodes(cbNodes, node.types);
            case 150:
                return visitNode(cbNode, node.type);
            case 151:
            case 152:
                return visitNodes(cbNodes, node.elements);
            case 154:
                return visitNodes(cbNodes, node.elements);
            case 155:
                return visitNodes(cbNodes, node.properties);
            case 156:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.dotToken) ||
                    visitNode(cbNode, node.name);
            case 157:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.argumentExpression);
            case 158:
            case 159:
                return visitNode(cbNode, node.expression) ||
                    visitNodes(cbNodes, node.typeArguments) ||
                    visitNodes(cbNodes, node.arguments);
            case 160:
                return visitNode(cbNode, node.tag) ||
                    visitNode(cbNode, node.template);
            case 161:
                return visitNode(cbNode, node.type) ||
                    visitNode(cbNode, node.expression);
            case 162:
                return visitNode(cbNode, node.expression);
            case 165:
                return visitNode(cbNode, node.expression);
            case 166:
                return visitNode(cbNode, node.expression);
            case 167:
                return visitNode(cbNode, node.expression);
            case 168:
                return visitNode(cbNode, node.operand);
            case 173:
                return visitNode(cbNode, node.asteriskToken) ||
                    visitNode(cbNode, node.expression);
            case 169:
                return visitNode(cbNode, node.operand);
            case 170:
                return visitNode(cbNode, node.left) ||
                    visitNode(cbNode, node.operatorToken) ||
                    visitNode(cbNode, node.right);
            case 171:
                return visitNode(cbNode, node.condition) ||
                    visitNode(cbNode, node.questionToken) ||
                    visitNode(cbNode, node.whenTrue) ||
                    visitNode(cbNode, node.colonToken) ||
                    visitNode(cbNode, node.whenFalse);
            case 174:
                return visitNode(cbNode, node.expression);
            case 180:
            case 207:
                return visitNodes(cbNodes, node.statements);
            case 228:
                return visitNodes(cbNodes, node.statements) ||
                    visitNode(cbNode, node.endOfFileToken);
            case 181:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.declarationList);
            case 200:
                return visitNodes(cbNodes, node.declarations);
            case 183:
                return visitNode(cbNode, node.expression);
            case 184:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.thenStatement) ||
                    visitNode(cbNode, node.elseStatement);
            case 185:
                return visitNode(cbNode, node.statement) ||
                    visitNode(cbNode, node.expression);
            case 186:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.statement);
            case 187:
                return visitNode(cbNode, node.initializer) ||
                    visitNode(cbNode, node.condition) ||
                    visitNode(cbNode, node.incrementor) ||
                    visitNode(cbNode, node.statement);
            case 188:
                return visitNode(cbNode, node.initializer) ||
                    visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.statement);
            case 189:
                return visitNode(cbNode, node.initializer) ||
                    visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.statement);
            case 190:
            case 191:
                return visitNode(cbNode, node.label);
            case 192:
                return visitNode(cbNode, node.expression);
            case 193:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.statement);
            case 194:
                return visitNode(cbNode, node.expression) ||
                    visitNode(cbNode, node.caseBlock);
            case 208:
                return visitNodes(cbNodes, node.clauses);
            case 221:
                return visitNode(cbNode, node.expression) ||
                    visitNodes(cbNodes, node.statements);
            case 222:
                return visitNodes(cbNodes, node.statements);
            case 195:
                return visitNode(cbNode, node.label) ||
                    visitNode(cbNode, node.statement);
            case 196:
                return visitNode(cbNode, node.expression);
            case 197:
                return visitNode(cbNode, node.tryBlock) ||
                    visitNode(cbNode, node.catchClause) ||
                    visitNode(cbNode, node.finallyBlock);
            case 224:
                return visitNode(cbNode, node.variableDeclaration) ||
                    visitNode(cbNode, node.block);
            case 131:
                return visitNode(cbNode, node.expression);
            case 202:
            case 175:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNodes(cbNodes, node.typeParameters) ||
                    visitNodes(cbNodes, node.heritageClauses) ||
                    visitNodes(cbNodes, node.members);
            case 203:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNodes(cbNodes, node.typeParameters) ||
                    visitNodes(cbNodes, node.heritageClauses) ||
                    visitNodes(cbNodes, node.members);
            case 204:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.type);
            case 205:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNodes(cbNodes, node.members);
            case 227:
                return visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.initializer);
            case 206:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.body);
            case 209:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.moduleReference);
            case 210:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.importClause) ||
                    visitNode(cbNode, node.moduleSpecifier);
            case 211:
                return visitNode(cbNode, node.name) ||
                    visitNode(cbNode, node.namedBindings);
            case 212:
                return visitNode(cbNode, node.name);
            case 213:
            case 217:
                return visitNodes(cbNodes, node.elements);
            case 216:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.exportClause) ||
                    visitNode(cbNode, node.moduleSpecifier);
            case 214:
            case 218:
                return visitNode(cbNode, node.propertyName) ||
                    visitNode(cbNode, node.name);
            case 215:
                return visitNodes(cbNodes, node.decorators) ||
                    visitNodes(cbNodes, node.modifiers) ||
                    visitNode(cbNode, node.expression);
            case 172:
                return visitNode(cbNode, node.head) || visitNodes(cbNodes, node.templateSpans);
            case 178:
                return visitNode(cbNode, node.expression) || visitNode(cbNode, node.literal);
            case 128:
                return visitNode(cbNode, node.expression);
            case 223:
                return visitNodes(cbNodes, node.types);
            case 177:
                return visitNode(cbNode, node.expression) ||
                    visitNodes(cbNodes, node.typeArguments);
            case 220:
                return visitNode(cbNode, node.expression);
            case 219:
                return visitNodes(cbNodes, node.decorators);
        }
    }
    ts.forEachChild = forEachChild;
    function createSourceFile(fileName, sourceText, languageVersion, setParentNodes) {
        if (setParentNodes === void 0) { setParentNodes = false; }
        var start = new Date().getTime();
        var result = Parser.parseSourceFile(fileName, sourceText, languageVersion, undefined, setParentNodes);
        ts.parseTime += new Date().getTime() - start;
        return result;
    }
    ts.createSourceFile = createSourceFile;
    function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) {
        return IncrementalParser.updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks);
    }
    ts.updateSourceFile = updateSourceFile;
    var Parser;
    (function (Parser) {
        var scanner = ts.createScanner(2, true);
        var disallowInAndDecoratorContext = 2 | 16;
        var sourceFile;
        var syntaxCursor;
        var token;
        var sourceText;
        var nodeCount;
        var identifiers;
        var identifierCount;
        var parsingContext;
        var contextFlags = 0;
        var parseErrorBeforeNextFinishedNode = false;
        function parseSourceFile(fileName, _sourceText, languageVersion, _syntaxCursor, setParentNodes) {
            sourceText = _sourceText;
            syntaxCursor = _syntaxCursor;
            parsingContext = 0;
            identifiers = {};
            identifierCount = 0;
            nodeCount = 0;
            contextFlags = 0;
            parseErrorBeforeNextFinishedNode = false;
            createSourceFile(fileName, languageVersion);
            scanner.setText(sourceText);
            scanner.setOnError(scanError);
            scanner.setScriptTarget(languageVersion);
            token = nextToken();
            processReferenceComments(sourceFile);
            sourceFile.statements = parseList(0, true, parseSourceElement);
            ts.Debug.assert(token === 1);
            sourceFile.endOfFileToken = parseTokenNode();
            setExternalModuleIndicator(sourceFile);
            sourceFile.nodeCount = nodeCount;
            sourceFile.identifierCount = identifierCount;
            sourceFile.identifiers = identifiers;
            if (setParentNodes) {
                fixupParentReferences(sourceFile);
            }
            syntaxCursor = undefined;
            scanner.setText("");
            scanner.setOnError(undefined);
            var result = sourceFile;
            sourceFile = undefined;
            identifiers = undefined;
            syntaxCursor = undefined;
            sourceText = undefined;
            return result;
        }
        Parser.parseSourceFile = parseSourceFile;
        function fixupParentReferences(sourceFile) {
            // normally parent references are set during binding. However, for clients that only need
            // a syntax tree, and no semantic features, then the binding process is an unnecessary
            // overhead.  This functions allows us to set all the parents, without all the expense of
            // binding.
            var parent = sourceFile;
            forEachChild(sourceFile, visitNode);
            return;
            function visitNode(n) {
                if (n.parent !== parent) {
                    n.parent = parent;
                    var saveParent = parent;
                    parent = n;
                    forEachChild(n, visitNode);
                    parent = saveParent;
                }
            }
        }
        function createSourceFile(fileName, languageVersion) {
            sourceFile = createNode(228, 0);
            sourceFile.pos = 0;
            sourceFile.end = sourceText.length;
            sourceFile.text = sourceText;
            sourceFile.parseDiagnostics = [];
            sourceFile.bindDiagnostics = [];
            sourceFile.languageVersion = languageVersion;
            sourceFile.fileName = ts.normalizePath(fileName);
            sourceFile.flags = ts.fileExtensionIs(sourceFile.fileName, ".d.ts") ? 2048 : 0;
        }
        function setContextFlag(val, flag) {
            if (val) {
                contextFlags |= flag;
            }
            else {
                contextFlags &= ~flag;
            }
        }
        function setStrictModeContext(val) {
            setContextFlag(val, 1);
        }
        function setDisallowInContext(val) {
            setContextFlag(val, 2);
        }
        function setYieldContext(val) {
            setContextFlag(val, 4);
        }
        function setGeneratorParameterContext(val) {
            setContextFlag(val, 8);
        }
        function setDecoratorContext(val) {
            setContextFlag(val, 16);
        }
        function doOutsideOfContext(flags, func) {
            var currentContextFlags = contextFlags & flags;
            if (currentContextFlags) {
                setContextFlag(false, currentContextFlags);
                var result = func();
                setContextFlag(true, currentContextFlags);
                return result;
            }
            return func();
        }
        function allowInAnd(func) {
            if (contextFlags & 2) {
                setDisallowInContext(false);
                var result = func();
                setDisallowInContext(true);
                return result;
            }
            return func();
        }
        function disallowInAnd(func) {
            if (contextFlags & 2) {
                return func();
            }
            setDisallowInContext(true);
            var result = func();
            setDisallowInContext(false);
            return result;
        }
        function doInYieldContext(func) {
            if (contextFlags & 4) {
                return func();
            }
            setYieldContext(true);
            var result = func();
            setYieldContext(false);
            return result;
        }
        function doOutsideOfYieldContext(func) {
            if (contextFlags & 4) {
                setYieldContext(false);
                var result = func();
                setYieldContext(true);
                return result;
            }
            return func();
        }
        function doInDecoratorContext(func) {
            if (contextFlags & 16) {
                return func();
            }
            setDecoratorContext(true);
            var result = func();
            setDecoratorContext(false);
            return result;
        }
        function inYieldContext() {
            return (contextFlags & 4) !== 0;
        }
        function inStrictModeContext() {
            return (contextFlags & 1) !== 0;
        }
        function inGeneratorParameterContext() {
            return (contextFlags & 8) !== 0;
        }
        function inDisallowInContext() {
            return (contextFlags & 2) !== 0;
        }
        function inDecoratorContext() {
            return (contextFlags & 16) !== 0;
        }
        function parseErrorAtCurrentToken(message, arg0) {
            var start = scanner.getTokenPos();
            var length = scanner.getTextPos() - start;
            parseErrorAtPosition(start, length, message, arg0);
        }
        function parseErrorAtPosition(start, length, message, arg0) {
            var lastError = ts.lastOrUndefined(sourceFile.parseDiagnostics);
            if (!lastError || start !== lastError.start) {
                sourceFile.parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, start, length, message, arg0));
            }
            parseErrorBeforeNextFinishedNode = true;
        }
        function scanError(message, length) {
            var pos = scanner.getTextPos();
            parseErrorAtPosition(pos, length || 0, message);
        }
        function getNodePos() {
            return scanner.getStartPos();
        }
        function getNodeEnd() {
            return scanner.getStartPos();
        }
        function nextToken() {
            return token = scanner.scan();
        }
        function getTokenPos(pos) {
            return ts.skipTrivia(sourceText, pos);
        }
        function reScanGreaterToken() {
            return token = scanner.reScanGreaterToken();
        }
        function reScanSlashToken() {
            return token = scanner.reScanSlashToken();
        }
        function reScanTemplateToken() {
            return token = scanner.reScanTemplateToken();
        }
        function speculationHelper(callback, isLookAhead) {
            var saveToken = token;
            var saveParseDiagnosticsLength = sourceFile.parseDiagnostics.length;
            var saveParseErrorBeforeNextFinishedNode = parseErrorBeforeNextFinishedNode;
            var saveContextFlags = contextFlags;
            var result = isLookAhead
                ? scanner.lookAhead(callback)
                : scanner.tryScan(callback);
            ts.Debug.assert(saveContextFlags === contextFlags);
            if (!result || isLookAhead) {
                token = saveToken;
                sourceFile.parseDiagnostics.length = saveParseDiagnosticsLength;
                parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode;
            }
            return result;
        }
        function lookAhead(callback) {
            return speculationHelper(callback, true);
        }
        function tryParse(callback) {
            return speculationHelper(callback, false);
        }
        function isIdentifier() {
            if (token === 65) {
                return true;
            }
            if (token === 110 && inYieldContext()) {
                return false;
            }
            return token > 101;
        }
        function parseExpected(kind, diagnosticMessage) {
            if (token === kind) {
                nextToken();
                return true;
            }
            if (diagnosticMessage) {
                parseErrorAtCurrentToken(diagnosticMessage);
            }
            else {
                parseErrorAtCurrentToken(ts.Diagnostics._0_expected, ts.tokenToString(kind));
            }
            return false;
        }
        function parseOptional(t) {
            if (token === t) {
                nextToken();
                return true;
            }
            return false;
        }
        function parseOptionalToken(t) {
            if (token === t) {
                return parseTokenNode();
            }
            return undefined;
        }
        function parseExpectedToken(t, reportAtCurrentPosition, diagnosticMessage, arg0) {
            return parseOptionalToken(t) ||
                createMissingNode(t, reportAtCurrentPosition, diagnosticMessage, arg0);
        }
        function parseTokenNode() {
            var node = createNode(token);
            nextToken();
            return finishNode(node);
        }
        function canParseSemicolon() {
            if (token === 22) {
                return true;
            }
            return token === 15 || token === 1 || scanner.hasPrecedingLineBreak();
        }
        function parseSemicolon() {
            if (canParseSemicolon()) {
                if (token === 22) {
                    nextToken();
                }
                return true;
            }
            else {
                return parseExpected(22);
            }
        }
        function createNode(kind, pos) {
            nodeCount++;
            var node = new (nodeConstructors[kind] || (nodeConstructors[kind] = ts.objectAllocator.getNodeConstructor(kind)))();
            if (!(pos >= 0)) {
                pos = scanner.getStartPos();
            }
            node.pos = pos;
            node.end = pos;
            return node;
        }
        function finishNode(node) {
            node.end = scanner.getStartPos();
            if (contextFlags) {
                node.parserContextFlags = contextFlags;
            }
            if (parseErrorBeforeNextFinishedNode) {
                parseErrorBeforeNextFinishedNode = false;
                node.parserContextFlags |= 32;
            }
            return node;
        }
        function createMissingNode(kind, reportAtCurrentPosition, diagnosticMessage, arg0) {
            if (reportAtCurrentPosition) {
                parseErrorAtPosition(scanner.getStartPos(), 0, diagnosticMessage, arg0);
            }
            else {
                parseErrorAtCurrentToken(diagnosticMessage, arg0);
            }
            var result = createNode(kind, scanner.getStartPos());
            result.text = "";
            return finishNode(result);
        }
        function internIdentifier(text) {
            text = ts.escapeIdentifier(text);
            return ts.hasProperty(identifiers, text) ? identifiers[text] : (identifiers[text] = text);
        }
        function createIdentifier(isIdentifier, diagnosticMessage) {
            identifierCount++;
            if (isIdentifier) {
                var node = createNode(65);
                if (token !== 65) {
                    node.originalKeywordKind = token;
                }
                node.text = internIdentifier(scanner.getTokenValue());
                nextToken();
                return finishNode(node);
            }
            return createMissingNode(65, false, diagnosticMessage || ts.Diagnostics.Identifier_expected);
        }
        function parseIdentifier(diagnosticMessage) {
            return createIdentifier(isIdentifier(), diagnosticMessage);
        }
        function parseIdentifierName() {
            return createIdentifier(isIdentifierOrKeyword());
        }
        function isLiteralPropertyName() {
            return isIdentifierOrKeyword() ||
                token === 8 ||
                token === 7;
        }
        function parsePropertyName() {
            if (token === 8 || token === 7) {
                return parseLiteralNode(true);
            }
            if (token === 18) {
                return parseComputedPropertyName();
            }
            return parseIdentifierName();
        }
        function parseComputedPropertyName() {
            var node = createNode(128);
            parseExpected(18);
            var yieldContext = inYieldContext();
            if (inGeneratorParameterContext()) {
                setYieldContext(false);
            }
            node.expression = allowInAnd(parseExpression);
            if (inGeneratorParameterContext()) {
                setYieldContext(yieldContext);
            }
            parseExpected(19);
            return finishNode(node);
        }
        function parseContextualModifier(t) {
            return token === t && tryParse(nextTokenCanFollowModifier);
        }
        function nextTokenCanFollowModifier() {
            if (token === 70) {
                return nextToken() === 77;
            }
            if (token === 78) {
                nextToken();
                if (token === 73) {
                    return lookAhead(nextTokenIsClassOrFunction);
                }
                return token !== 35 && token !== 14 && canFollowModifier();
            }
            if (token === 73) {
                return nextTokenIsClassOrFunction();
            }
            nextToken();
            return canFollowModifier();
        }
        function parseAnyContextualModifier() {
            return ts.isModifier(token) && tryParse(nextTokenCanFollowModifier);
        }
        function canFollowModifier() {
            return token === 18
                || token === 14
                || token === 35
                || isLiteralPropertyName();
        }
        function nextTokenIsClassOrFunction() {
            nextToken();
            return token === 69 || token === 83;
        }
        function isListElement(parsingContext, inErrorRecovery) {
            var node = currentNode(parsingContext);
            if (node) {
                return true;
            }
            switch (parsingContext) {
                case 0:
                case 1:
                    return isSourceElement(inErrorRecovery);
                case 2:
                case 4:
                    return isStartOfStatement(inErrorRecovery);
                case 3:
                    return token === 67 || token === 73;
                case 5:
                    return isStartOfTypeMember();
                case 6:
                    return lookAhead(isClassMemberStart) || (token === 22 && !inErrorRecovery);
                case 7:
                    return token === 18 || isLiteralPropertyName();
                case 13:
                    return token === 18 || token === 35 || isLiteralPropertyName();
                case 10:
                    return isLiteralPropertyName();
                case 8:
                    if (token === 14) {
                        return lookAhead(isValidHeritageClauseObjectLiteral);
                    }
                    if (!inErrorRecovery) {
                        return isStartOfLeftHandSideExpression() && !isHeritageClauseExtendsOrImplementsKeyword();
                    }
                    else {
                        return isIdentifier() && !isHeritageClauseExtendsOrImplementsKeyword();
                    }
                case 9:
                    return isIdentifierOrPattern();
                case 11:
                    return token === 23 || token === 21 || isIdentifierOrPattern();
                case 16:
                    return isIdentifier();
                case 12:
                case 14:
                    return token === 23 || token === 21 || isStartOfExpression();
                case 15:
                    return isStartOfParameter();
                case 17:
                case 18:
                    return token === 23 || isStartOfType();
                case 19:
                    return isHeritageClause();
                case 20:
                    return isIdentifierOrKeyword();
            }
            ts.Debug.fail("Non-exhaustive case in 'isListElement'.");
        }
        function isValidHeritageClauseObjectLiteral() {
            ts.Debug.assert(token === 14);
            if (nextToken() === 15) {
                var next = nextToken();
                return next === 23 || next === 14 || next === 79 || next === 102;
            }
            return true;
        }
        function nextTokenIsIdentifier() {
            nextToken();
            return isIdentifier();
        }
        function isHeritageClauseExtendsOrImplementsKeyword() {
            if (token === 102 ||
                token === 79) {
                return lookAhead(nextTokenIsStartOfExpression);
            }
            return false;
        }
        function nextTokenIsStartOfExpression() {
            nextToken();
            return isStartOfExpression();
        }
        function isListTerminator(kind) {
            if (token === 1) {
                return true;
            }
            switch (kind) {
                case 1:
                case 2:
                case 3:
                case 5:
                case 6:
                case 7:
                case 13:
                case 10:
                case 20:
                    return token === 15;
                case 4:
                    return token === 15 || token === 67 || token === 73;
                case 8:
                    return token === 14 || token === 79 || token === 102;
                case 9:
                    return isVariableDeclaratorListTerminator();
                case 16:
                    return token === 25 || token === 16 || token === 14 || token === 79 || token === 102;
                case 12:
                    return token === 17 || token === 22;
                case 14:
                case 18:
                case 11:
                    return token === 19;
                case 15:
                    return token === 17 || token === 19;
                case 17:
                    return token === 25 || token === 16;
                case 19:
                    return token === 14 || token === 15;
            }
        }
        function isVariableDeclaratorListTerminator() {
            if (canParseSemicolon()) {
                return true;
            }
            if (isInOrOfKeyword(token)) {
                return true;
            }
            if (token === 32) {
                return true;
            }
            return false;
        }
        function isInSomeParsingContext() {
            for (var kind = 0; kind < 21; kind++) {
                if (parsingContext & (1 << kind)) {
                    if (isListElement(kind, true) || isListTerminator(kind)) {
                        return true;
                    }
                }
            }
            return false;
        }
        function parseList(kind, checkForStrictMode, parseElement) {
            var saveParsingContext = parsingContext;
            parsingContext |= 1 << kind;
            var result = [];
            result.pos = getNodePos();
            var savedStrictModeContext = inStrictModeContext();
            while (!isListTerminator(kind)) {
                if (isListElement(kind, false)) {
                    var element = parseListElement(kind, parseElement);
                    result.push(element);
                    if (checkForStrictMode && !inStrictModeContext()) {
                        if (ts.isPrologueDirective(element)) {
                            if (isUseStrictPrologueDirective(sourceFile, element)) {
                                setStrictModeContext(true);
                                checkForStrictMode = false;
                            }
                        }
                        else {
                            checkForStrictMode = false;
                        }
                    }
                    continue;
                }
                if (abortParsingListOrMoveToNextToken(kind)) {
                    break;
                }
            }
            setStrictModeContext(savedStrictModeContext);
            result.end = getNodeEnd();
            parsingContext = saveParsingContext;
            return result;
        }
        function isUseStrictPrologueDirective(sourceFile, node) {
            ts.Debug.assert(ts.isPrologueDirective(node));
            var nodeText = ts.getSourceTextOfNodeFromSourceFile(sourceFile, node.expression);
            return nodeText === '"use strict"' || nodeText === "'use strict'";
        }
        function parseListElement(parsingContext, parseElement) {
            var node = currentNode(parsingContext);
            if (node) {
                return consumeNode(node);
            }
            return parseElement();
        }
        function currentNode(parsingContext) {
            if (parseErrorBeforeNextFinishedNode) {
                return undefined;
            }
            if (!syntaxCursor) {
                return undefined;
            }
            var node = syntaxCursor.currentNode(scanner.getStartPos());
            if (ts.nodeIsMissing(node)) {
                return undefined;
            }
            if (node.intersectsChange) {
                return undefined;
            }
            if (ts.containsParseError(node)) {
                return undefined;
            }
            var nodeContextFlags = node.parserContextFlags & 63;
            if (nodeContextFlags !== contextFlags) {
                return undefined;
            }
            if (!canReuseNode(node, parsingContext)) {
                return undefined;
            }
            return node;
        }
        function consumeNode(node) {
            scanner.setTextPos(node.end);
            nextToken();
            return node;
        }
        function canReuseNode(node, parsingContext) {
            switch (parsingContext) {
                case 1:
                    return isReusableModuleElement(node);
                case 6:
                    return isReusableClassMember(node);
                case 3:
                    return isReusableSwitchClause(node);
                case 2:
                case 4:
                    return isReusableStatement(node);
                case 7:
                    return isReusableEnumMember(node);
                case 5:
                    return isReusableTypeMember(node);
                case 9:
                    return isReusableVariableDeclaration(node);
                case 15:
                    return isReusableParameter(node);
                case 19:
                case 16:
                case 18:
                case 17:
                case 12:
                case 13:
                case 8:
            }
            return false;
        }
        function isReusableModuleElement(node) {
            if (node) {
                switch (node.kind) {
                    case 210:
                    case 209:
                    case 216:
                    case 215:
                    case 202:
                    case 203:
                    case 206:
                    case 205:
                        return true;
                }
                return isReusableStatement(node);
            }
            return false;
        }
        function isReusableClassMember(node) {
            if (node) {
                switch (node.kind) {
                    case 136:
                    case 141:
                    case 135:
                    case 137:
                    case 138:
                    case 133:
                    case 179:
                        return true;
                }
            }
            return false;
        }
        function isReusableSwitchClause(node) {
            if (node) {
                switch (node.kind) {
                    case 221:
                    case 222:
                        return true;
                }
            }
            return false;
        }
        function isReusableStatement(node) {
            if (node) {
                switch (node.kind) {
                    case 201:
                    case 181:
                    case 180:
                    case 184:
                    case 183:
                    case 196:
                    case 192:
                    case 194:
                    case 191:
                    case 190:
                    case 188:
                    case 189:
                    case 187:
                    case 186:
                    case 193:
                    case 182:
                    case 197:
                    case 195:
                    case 185:
                    case 198:
                        return true;
                }
            }
            return false;
        }
        function isReusableEnumMember(node) {
            return node.kind === 227;
        }
        function isReusableTypeMember(node) {
            if (node) {
                switch (node.kind) {
                    case 140:
                    case 134:
                    case 141:
                    case 132:
                    case 139:
                        return true;
                }
            }
            return false;
        }
        function isReusableVariableDeclaration(node) {
            if (node.kind !== 199) {
                return false;
            }
            var variableDeclarator = node;
            return variableDeclarator.initializer === undefined;
        }
        function isReusableParameter(node) {
            if (node.kind !== 130) {
                return false;
            }
            var parameter = node;
            return parameter.initializer === undefined;
        }
        function abortParsingListOrMoveToNextToken(kind) {
            parseErrorAtCurrentToken(parsingContextErrors(kind));
            if (isInSomeParsingContext()) {
                return true;
            }
            nextToken();
            return false;
        }
        function parsingContextErrors(context) {
            switch (context) {
                case 0: return ts.Diagnostics.Declaration_or_statement_expected;
                case 1: return ts.Diagnostics.Declaration_or_statement_expected;
                case 2: return ts.Diagnostics.Statement_expected;
                case 3: return ts.Diagnostics.case_or_default_expected;
                case 4: return ts.Diagnostics.Statement_expected;
                case 5: return ts.Diagnostics.Property_or_signature_expected;
                case 6: return ts.Diagnostics.Unexpected_token_A_constructor_method_accessor_or_property_was_expected;
                case 7: return ts.Diagnostics.Enum_member_expected;
                case 8: return ts.Diagnostics.Expression_expected;
                case 9: return ts.Diagnostics.Variable_declaration_expected;
                case 10: return ts.Diagnostics.Property_destructuring_pattern_expected;
                case 11: return ts.Diagnostics.Array_element_destructuring_pattern_expected;
                case 12: return ts.Diagnostics.Argument_expression_expected;
                case 13: return ts.Diagnostics.Property_assignment_expected;
                case 14: return ts.Diagnostics.Expression_or_comma_expected;
                case 15: return ts.Diagnostics.Parameter_declaration_expected;
                case 16: return ts.Diagnostics.Type_parameter_declaration_expected;
                case 17: return ts.Diagnostics.Type_argument_expected;
                case 18: return ts.Diagnostics.Type_expected;
                case 19: return ts.Diagnostics.Unexpected_token_expected;
                case 20: return ts.Diagnostics.Identifier_expected;
            }
        }
        ;
        function parseDelimitedList(kind, parseElement, considerSemicolonAsDelimeter) {
            var saveParsingContext = parsingContext;
            parsingContext |= 1 << kind;
            var result = [];
            result.pos = getNodePos();
            var commaStart = -1;
            while (true) {
                if (isListElement(kind, false)) {
                    result.push(parseListElement(kind, parseElement));
                    commaStart = scanner.getTokenPos();
                    if (parseOptional(23)) {
                        continue;
                    }
                    commaStart = -1;
                    if (isListTerminator(kind)) {
                        break;
                    }
                    parseExpected(23);
                    if (considerSemicolonAsDelimeter && token === 22 && !scanner.hasPrecedingLineBreak()) {
                        nextToken();
                    }
                    continue;
                }
                if (isListTerminator(kind)) {
                    break;
                }
                if (abortParsingListOrMoveToNextToken(kind)) {
                    break;
                }
            }
            if (commaStart >= 0) {
                result.hasTrailingComma = true;
            }
            result.end = getNodeEnd();
            parsingContext = saveParsingContext;
            return result;
        }
        function createMissingList() {
            var pos = getNodePos();
            var result = [];
            result.pos = pos;
            result.end = pos;
            return result;
        }
        function parseBracketedList(kind, parseElement, open, close) {
            if (parseExpected(open)) {
                var result = parseDelimitedList(kind, parseElement);
                parseExpected(close);
                return result;
            }
            return createMissingList();
        }
        function parseEntityName(allowReservedWords, diagnosticMessage) {
            var entity = parseIdentifier(diagnosticMessage);
            while (parseOptional(20)) {
                var node = createNode(127, entity.pos);
                node.left = entity;
                node.right = parseRightSideOfDot(allowReservedWords);
                entity = finishNode(node);
            }
            return entity;
        }
        function parseRightSideOfDot(allowIdentifierNames) {
            if (scanner.hasPrecedingLineBreak() && scanner.isReservedWord()) {
                var matchesPattern = lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine);
                if (matchesPattern) {
                    return createMissingNode(65, true, ts.Diagnostics.Identifier_expected);
                }
            }
            return allowIdentifierNames ? parseIdentifierName() : parseIdentifier();
        }
        function parseTemplateExpression() {
            var template = createNode(172);
            template.head = parseLiteralNode();
            ts.Debug.assert(template.head.kind === 11, "Template head has wrong token kind");
            var templateSpans = [];
            templateSpans.pos = getNodePos();
            do {
                templateSpans.push(parseTemplateSpan());
            } while (ts.lastOrUndefined(templateSpans).literal.kind === 12);
            templateSpans.end = getNodeEnd();
            template.templateSpans = templateSpans;
            return finishNode(template);
        }
        function parseTemplateSpan() {
            var span = createNode(178);
            span.expression = allowInAnd(parseExpression);
            var literal;
            if (token === 15) {
                reScanTemplateToken();
                literal = parseLiteralNode();
            }
            else {
                literal = parseExpectedToken(13, false, ts.Diagnostics._0_expected, ts.tokenToString(15));
            }
            span.literal = literal;
            return finishNode(span);
        }
        function parseLiteralNode(internName) {
            var node = createNode(token);
            var text = scanner.getTokenValue();
            node.text = internName ? internIdentifier(text) : text;
            if (scanner.hasExtendedUnicodeEscape()) {
                node.hasExtendedUnicodeEscape = true;
            }
            if (scanner.isUnterminated()) {
                node.isUnterminated = true;
            }
            var tokenPos = scanner.getTokenPos();
            nextToken();
            finishNode(node);
            if (node.kind === 7
                && sourceText.charCodeAt(tokenPos) === 48
                && ts.isOctalDigit(sourceText.charCodeAt(tokenPos + 1))) {
                node.flags |= 16384;
            }
            return node;
        }
        function parseTypeReference() {
            var node = createNode(142);
            node.typeName = parseEntityName(false, ts.Diagnostics.Type_expected);
            if (!scanner.hasPrecedingLineBreak() && token === 24) {
                node.typeArguments = parseBracketedList(17, parseType, 24, 25);
            }
            return finishNode(node);
        }
        function parseTypeQuery() {
            var node = createNode(145);
            parseExpected(97);
            node.exprName = parseEntityName(true);
            return finishNode(node);
        }
        function parseTypeParameter() {
            var node = createNode(129);
            node.name = parseIdentifier();
            if (parseOptional(79)) {
                if (isStartOfType() || !isStartOfExpression()) {
                    node.constraint = parseType();
                }
                else {
                    node.expression = parseUnaryExpressionOrHigher();
                }
            }
            return finishNode(node);
        }
        function parseTypeParameters() {
            if (token === 24) {
                return parseBracketedList(16, parseTypeParameter, 24, 25);
            }
        }
        function parseParameterType() {
            if (parseOptional(51)) {
                return token === 8
                    ? parseLiteralNode(true)
                    : parseType();
            }
            return undefined;
        }
        function isStartOfParameter() {
            return token === 21 || isIdentifierOrPattern() || ts.isModifier(token) || token === 52;
        }
        function setModifiers(node, modifiers) {
            if (modifiers) {
                node.flags |= modifiers.flags;
                node.modifiers = modifiers;
            }
        }
        function parseParameter() {
            var node = createNode(130);
            node.decorators = parseDecorators();
            setModifiers(node, parseModifiers());
            node.dotDotDotToken = parseOptionalToken(21);
            node.name = inGeneratorParameterContext() ? doInYieldContext(parseIdentifierOrPattern) : parseIdentifierOrPattern();
            if (ts.getFullWidth(node.name) === 0 && node.flags === 0 && ts.isModifier(token)) {
                nextToken();
            }
            node.questionToken = parseOptionalToken(50);
            node.type = parseParameterType();
            node.initializer = inGeneratorParameterContext() ? doOutsideOfYieldContext(parseParameterInitializer) : parseParameterInitializer();
            return finishNode(node);
        }
        function parseParameterInitializer() {
            return parseInitializer(true);
        }
        function fillSignature(returnToken, yieldAndGeneratorParameterContext, requireCompleteParameterList, signature) {
            var returnTokenRequired = returnToken === 32;
            signature.typeParameters = parseTypeParameters();
            signature.parameters = parseParameterList(yieldAndGeneratorParameterContext, requireCompleteParameterList);
            if (returnTokenRequired) {
                parseExpected(returnToken);
                signature.type = parseType();
            }
            else if (parseOptional(returnToken)) {
                signature.type = parseType();
            }
        }
        function parseParameterList(yieldAndGeneratorParameterContext, requireCompleteParameterList) {
            if (parseExpected(16)) {
                var savedYieldContext = inYieldContext();
                var savedGeneratorParameterContext = inGeneratorParameterContext();
                setYieldContext(yieldAndGeneratorParameterContext);
                setGeneratorParameterContext(yieldAndGeneratorParameterContext);
                var result = parseDelimitedList(15, parseParameter);
                setYieldContext(savedYieldContext);
                setGeneratorParameterContext(savedGeneratorParameterContext);
                if (!parseExpected(17) && requireCompleteParameterList) {
                    return undefined;
                }
                return result;
            }
            return requireCompleteParameterList ? undefined : createMissingList();
        }
        function parseTypeMemberSemicolon() {
            if (parseOptional(23)) {
                return;
            }
            parseSemicolon();
        }
        function parseSignatureMember(kind) {
            var node = createNode(kind);
            if (kind === 140) {
                parseExpected(88);
            }
            fillSignature(51, false, false, node);
            parseTypeMemberSemicolon();
            return finishNode(node);
        }
        function isIndexSignature() {
            if (token !== 18) {
                return false;
            }
            return lookAhead(isUnambiguouslyIndexSignature);
        }
        function isUnambiguouslyIndexSignature() {
            nextToken();
            if (token === 21 || token === 19) {
                return true;
            }
            if (ts.isModifier(token)) {
                nextToken();
                if (isIdentifier()) {
                    return true;
                }
            }
            else if (!isIdentifier()) {
                return false;
            }
            else {
                nextToken();
            }
            if (token === 51 || token === 23) {
                return true;
            }
            if (token !== 50) {
                return false;
            }
            nextToken();
            return token === 51 || token === 23 || token === 19;
        }
        function parseIndexSignatureDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(141, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            node.parameters = parseBracketedList(15, parseParameter, 18, 19);
            node.type = parseTypeAnnotation();
            parseTypeMemberSemicolon();
            return finishNode(node);
        }
        function parsePropertyOrMethodSignature() {
            var fullStart = scanner.getStartPos();
            var name = parsePropertyName();
            var questionToken = parseOptionalToken(50);
            if (token === 16 || token === 24) {
                var method = createNode(134, fullStart);
                method.name = name;
                method.questionToken = questionToken;
                fillSignature(51, false, false, method);
                parseTypeMemberSemicolon();
                return finishNode(method);
            }
            else {
                var property = createNode(132, fullStart);
                property.name = name;
                property.questionToken = questionToken;
                property.type = parseTypeAnnotation();
                parseTypeMemberSemicolon();
                return finishNode(property);
            }
        }
        function isStartOfTypeMember() {
            switch (token) {
                case 16:
                case 24:
                case 18:
                    return true;
                default:
                    if (ts.isModifier(token)) {
                        var result = lookAhead(isStartOfIndexSignatureDeclaration);
                        if (result) {
                            return result;
                        }
                    }
                    return isLiteralPropertyName() && lookAhead(isTypeMemberWithLiteralPropertyName);
            }
        }
        function isStartOfIndexSignatureDeclaration() {
            while (ts.isModifier(token)) {
                nextToken();
            }
            return isIndexSignature();
        }
        function isTypeMemberWithLiteralPropertyName() {
            nextToken();
            return token === 16 ||
                token === 24 ||
                token === 50 ||
                token === 51 ||
                canParseSemicolon();
        }
        function parseTypeMember() {
            switch (token) {
                case 16:
                case 24:
                    return parseSignatureMember(139);
                case 18:
                    return isIndexSignature()
                        ? parseIndexSignatureDeclaration(scanner.getStartPos(), undefined, undefined)
                        : parsePropertyOrMethodSignature();
                case 88:
                    if (lookAhead(isStartOfConstructSignature)) {
                        return parseSignatureMember(140);
                    }
                case 8:
                case 7:
                    return parsePropertyOrMethodSignature();
                default:
                    if (ts.isModifier(token)) {
                        var result = tryParse(parseIndexSignatureWithModifiers);
                        if (result) {
                            return result;
                        }
                    }
                    if (isIdentifierOrKeyword()) {
                        return parsePropertyOrMethodSignature();
                    }
            }
        }
        function parseIndexSignatureWithModifiers() {
            var fullStart = scanner.getStartPos();
            var decorators = parseDecorators();
            var modifiers = parseModifiers();
            return isIndexSignature()
                ? parseIndexSignatureDeclaration(fullStart, decorators, modifiers)
                : undefined;
        }
        function isStartOfConstructSignature() {
            nextToken();
            return token === 16 || token === 24;
        }
        function parseTypeLiteral() {
            var node = createNode(146);
            node.members = parseObjectTypeMembers();
            return finishNode(node);
        }
        function parseObjectTypeMembers() {
            var members;
            if (parseExpected(14)) {
                members = parseList(5, false, parseTypeMember);
                parseExpected(15);
            }
            else {
                members = createMissingList();
            }
            return members;
        }
        function parseTupleType() {
            var node = createNode(148);
            node.elementTypes = parseBracketedList(18, parseType, 18, 19);
            return finishNode(node);
        }
        function parseParenthesizedType() {
            var node = createNode(150);
            parseExpected(16);
            node.type = parseType();
            parseExpected(17);
            return finishNode(node);
        }
        function parseFunctionOrConstructorType(kind) {
            var node = createNode(kind);
            if (kind === 144) {
                parseExpected(88);
            }
            fillSignature(32, false, false, node);
            return finishNode(node);
        }
        function parseKeywordAndNoDot() {
            var node = parseTokenNode();
            return token === 20 ? undefined : node;
        }
        function parseNonArrayType() {
            switch (token) {
                case 112:
                case 122:
                case 120:
                case 113:
                case 123:
                    var node = tryParse(parseKeywordAndNoDot);
                    return node || parseTypeReference();
                case 99:
                    return parseTokenNode();
                case 97:
                    return parseTypeQuery();
                case 14:
                    return parseTypeLiteral();
                case 18:
                    return parseTupleType();
                case 16:
                    return parseParenthesizedType();
                default:
                    return parseTypeReference();
            }
        }
        function isStartOfType() {
            switch (token) {
                case 112:
                case 122:
                case 120:
                case 113:
                case 123:
                case 99:
                case 97:
                case 14:
                case 18:
                case 24:
                case 88:
                    return true;
                case 16:
                    return lookAhead(isStartOfParenthesizedOrFunctionType);
                default:
                    return isIdentifier();
            }
        }
        function isStartOfParenthesizedOrFunctionType() {
            nextToken();
            return token === 17 || isStartOfParameter() || isStartOfType();
        }
        function parseArrayTypeOrHigher() {
            var type = parseNonArrayType();
            while (!scanner.hasPrecedingLineBreak() && parseOptional(18)) {
                parseExpected(19);
                var node = createNode(147, type.pos);
                node.elementType = type;
                type = finishNode(node);
            }
            return type;
        }
        function parseUnionTypeOrHigher() {
            var type = parseArrayTypeOrHigher();
            if (token === 44) {
                var types = [type];
                types.pos = type.pos;
                while (parseOptional(44)) {
                    types.push(parseArrayTypeOrHigher());
                }
                types.end = getNodeEnd();
                var node = createNode(149, type.pos);
                node.types = types;
                type = finishNode(node);
            }
            return type;
        }
        function isStartOfFunctionType() {
            if (token === 24) {
                return true;
            }
            return token === 16 && lookAhead(isUnambiguouslyStartOfFunctionType);
        }
        function isUnambiguouslyStartOfFunctionType() {
            nextToken();
            if (token === 17 || token === 21) {
                return true;
            }
            if (isIdentifier() || ts.isModifier(token)) {
                nextToken();
                if (token === 51 || token === 23 ||
                    token === 50 || token === 53 ||
                    isIdentifier() || ts.isModifier(token)) {
                    return true;
                }
                if (token === 17) {
                    nextToken();
                    if (token === 32) {
                        return true;
                    }
                }
            }
            return false;
        }
        function parseType() {
            var savedYieldContext = inYieldContext();
            var savedGeneratorParameterContext = inGeneratorParameterContext();
            setYieldContext(false);
            setGeneratorParameterContext(false);
            var result = parseTypeWorker();
            setYieldContext(savedYieldContext);
            setGeneratorParameterContext(savedGeneratorParameterContext);
            return result;
        }
        function parseTypeWorker() {
            if (isStartOfFunctionType()) {
                return parseFunctionOrConstructorType(143);
            }
            if (token === 88) {
                return parseFunctionOrConstructorType(144);
            }
            return parseUnionTypeOrHigher();
        }
        function parseTypeAnnotation() {
            return parseOptional(51) ? parseType() : undefined;
        }
        function isStartOfLeftHandSideExpression() {
            switch (token) {
                case 93:
                case 91:
                case 89:
                case 95:
                case 80:
                case 7:
                case 8:
                case 10:
                case 11:
                case 16:
                case 18:
                case 14:
                case 83:
                case 69:
                case 88:
                case 36:
                case 57:
                case 65:
                    return true;
                default:
                    return isIdentifier();
            }
        }
        function isStartOfExpression() {
            if (isStartOfLeftHandSideExpression()) {
                return true;
            }
            switch (token) {
                case 33:
                case 34:
                case 47:
                case 46:
                case 74:
                case 97:
                case 99:
                case 38:
                case 39:
                case 24:
                case 110:
                    return true;
                default:
                    if (isBinaryOperator()) {
                        return true;
                    }
                    return isIdentifier();
            }
        }
        function isStartOfExpressionStatement() {
            return token !== 14 &&
                token !== 83 &&
                token !== 69 &&
                token !== 52 &&
                isStartOfExpression();
        }
        function parseExpression() {
            // Expression[in]:
            //      AssignmentExpression[in]
            //      Expression[in] , AssignmentExpression[in]
            var saveDecoratorContext = inDecoratorContext();
            if (saveDecoratorContext) {
                setDecoratorContext(false);
            }
            var expr = parseAssignmentExpressionOrHigher();
            var operatorToken;
            while ((operatorToken = parseOptionalToken(23))) {
                expr = makeBinaryExpression(expr, operatorToken, parseAssignmentExpressionOrHigher());
            }
            if (saveDecoratorContext) {
                setDecoratorContext(true);
            }
            return expr;
        }
        function parseInitializer(inParameter) {
            if (token !== 53) {
                if (scanner.hasPrecedingLineBreak() || (inParameter && token === 14) || !isStartOfExpression()) {
                    return undefined;
                }
            }
            parseExpected(53);
            return parseAssignmentExpressionOrHigher();
        }
        function parseAssignmentExpressionOrHigher() {
            //  AssignmentExpression[in,yield]:
            //      1) ConditionalExpression[?in,?yield]
            //      2) LeftHandSideExpression = AssignmentExpression[?in,?yield]
            //      3) LeftHandSideExpression AssignmentOperator AssignmentExpression[?in,?yield]
            //      4) ArrowFunctionExpression[?in,?yield]
            //      5) [+Yield] YieldExpression[?In]
            //
            // Note: for ease of implementation we treat productions '2' and '3' as the same thing.
            // (i.e. they're both BinaryExpressions with an assignment operator in it).
            if (isYieldExpression()) {
                return parseYieldExpression();
            }
            var arrowExpression = tryParseParenthesizedArrowFunctionExpression();
            if (arrowExpression) {
                return arrowExpression;
            }
            var expr = parseBinaryExpressionOrHigher(0);
            if (expr.kind === 65 && token === 32) {
                return parseSimpleArrowFunctionExpression(expr);
            }
            if (ts.isLeftHandSideExpression(expr) && ts.isAssignmentOperator(reScanGreaterToken())) {
                return makeBinaryExpression(expr, parseTokenNode(), parseAssignmentExpressionOrHigher());
            }
            return parseConditionalExpressionRest(expr);
        }
        function isYieldExpression() {
            if (token === 110) {
                if (inYieldContext()) {
                    return true;
                }
                if (inStrictModeContext()) {
                    return true;
                }
                return lookAhead(nextTokenIsIdentifierOnSameLine);
            }
            return false;
        }
        function nextTokenIsIdentifierOnSameLine() {
            nextToken();
            return !scanner.hasPrecedingLineBreak() && isIdentifier();
        }
        function nextTokenIsIdentifierOrStartOfDestructuringOnTheSameLine() {
            nextToken();
            return !scanner.hasPrecedingLineBreak() &&
                (isIdentifier() || token === 14 || token === 18);
        }
        function parseYieldExpression() {
            var node = createNode(173);
            nextToken();
            if (!scanner.hasPrecedingLineBreak() &&
                (token === 35 || isStartOfExpression())) {
                node.asteriskToken = parseOptionalToken(35);
                node.expression = parseAssignmentExpressionOrHigher();
                return finishNode(node);
            }
            else {
                return finishNode(node);
            }
        }
        function parseSimpleArrowFunctionExpression(identifier) {
            ts.Debug.assert(token === 32, "parseSimpleArrowFunctionExpression should only have been called if we had a =>");
            var node = createNode(164, identifier.pos);
            var parameter = createNode(130, identifier.pos);
            parameter.name = identifier;
            finishNode(parameter);
            node.parameters = [parameter];
            node.parameters.pos = parameter.pos;
            node.parameters.end = parameter.end;
            node.equalsGreaterThanToken = parseExpectedToken(32, false, ts.Diagnostics._0_expected, "=>");
            node.body = parseArrowFunctionExpressionBody();
            return finishNode(node);
        }
        function tryParseParenthesizedArrowFunctionExpression() {
            var triState = isParenthesizedArrowFunctionExpression();
            if (triState === 0) {
                return undefined;
            }
            var arrowFunction = triState === 1
                ? parseParenthesizedArrowFunctionExpressionHead(true)
                : tryParse(parsePossibleParenthesizedArrowFunctionExpressionHead);
            if (!arrowFunction) {
                return undefined;
            }
            var lastToken = token;
            arrowFunction.equalsGreaterThanToken = parseExpectedToken(32, false, ts.Diagnostics._0_expected, "=>");
            arrowFunction.body = (lastToken === 32 || lastToken === 14)
                ? parseArrowFunctionExpressionBody()
                : parseIdentifier();
            return finishNode(arrowFunction);
        }
        function isParenthesizedArrowFunctionExpression() {
            if (token === 16 || token === 24) {
                return lookAhead(isParenthesizedArrowFunctionExpressionWorker);
            }
            if (token === 32) {
                return 1;
            }
            return 0;
        }
        function isParenthesizedArrowFunctionExpressionWorker() {
            var first = token;
            var second = nextToken();
            if (first === 16) {
                if (second === 17) {
                    var third = nextToken();
                    switch (third) {
                        case 32:
                        case 51:
                        case 14:
                            return 1;
                        default:
                            return 0;
                    }
                }
                if (second === 18 || second === 14) {
                    return 2;
                }
                if (second === 21) {
                    return 1;
                }
                if (!isIdentifier()) {
                    return 0;
                }
                if (nextToken() === 51) {
                    return 1;
                }
                return 2;
            }
            else {
                ts.Debug.assert(first === 24);
                if (!isIdentifier()) {
                    return 0;
                }
                return 2;
            }
        }
        function parsePossibleParenthesizedArrowFunctionExpressionHead() {
            return parseParenthesizedArrowFunctionExpressionHead(false);
        }
        function parseParenthesizedArrowFunctionExpressionHead(allowAmbiguity) {
            var node = createNode(164);
            fillSignature(51, false, !allowAmbiguity, node);
            if (!node.parameters) {
                return undefined;
            }
            if (!allowAmbiguity && token !== 32 && token !== 14) {
                return undefined;
            }
            return node;
        }
        function parseArrowFunctionExpressionBody() {
            if (token === 14) {
                return parseFunctionBlock(false, false);
            }
            if (isStartOfStatement(true) &&
                !isStartOfExpressionStatement() &&
                token !== 83 &&
                token !== 69) {
                return parseFunctionBlock(false, true);
            }
            return parseAssignmentExpressionOrHigher();
        }
        function parseConditionalExpressionRest(leftOperand) {
            var questionToken = parseOptionalToken(50);
            if (!questionToken) {
                return leftOperand;
            }
            var node = createNode(171, leftOperand.pos);
            node.condition = leftOperand;
            node.questionToken = questionToken;
            node.whenTrue = doOutsideOfContext(disallowInAndDecoratorContext, parseAssignmentExpressionOrHigher);
            node.colonToken = parseExpectedToken(51, false, ts.Diagnostics._0_expected, ts.tokenToString(51));
            node.whenFalse = parseAssignmentExpressionOrHigher();
            return finishNode(node);
        }
        function parseBinaryExpressionOrHigher(precedence) {
            var leftOperand = parseUnaryExpressionOrHigher();
            return parseBinaryExpressionRest(precedence, leftOperand);
        }
        function isInOrOfKeyword(t) {
            return t === 86 || t === 126;
        }
        function parseBinaryExpressionRest(precedence, leftOperand) {
            while (true) {
                reScanGreaterToken();
                var newPrecedence = getBinaryOperatorPrecedence();
                if (newPrecedence <= precedence) {
                    break;
                }
                if (token === 86 && inDisallowInContext()) {
                    break;
                }
                leftOperand = makeBinaryExpression(leftOperand, parseTokenNode(), parseBinaryExpressionOrHigher(newPrecedence));
            }
            return leftOperand;
        }
        function isBinaryOperator() {
            if (inDisallowInContext() && token === 86) {
                return false;
            }
            return getBinaryOperatorPrecedence() > 0;
        }
        function getBinaryOperatorPrecedence() {
            switch (token) {
                case 49:
                    return 1;
                case 48:
                    return 2;
                case 44:
                    return 3;
                case 45:
                    return 4;
                case 43:
                    return 5;
                case 28:
                case 29:
                case 30:
                case 31:
                    return 6;
                case 24:
                case 25:
                case 26:
                case 27:
                case 87:
                case 86:
                    return 7;
                case 40:
                case 41:
                case 42:
                    return 8;
                case 33:
                case 34:
                    return 9;
                case 35:
                case 36:
                case 37:
                    return 10;
            }
            return -1;
        }
        function makeBinaryExpression(left, operatorToken, right) {
            var node = createNode(170, left.pos);
            node.left = left;
            node.operatorToken = operatorToken;
            node.right = right;
            return finishNode(node);
        }
        function parsePrefixUnaryExpression() {
            var node = createNode(168);
            node.operator = token;
            nextToken();
            node.operand = parseUnaryExpressionOrHigher();
            return finishNode(node);
        }
        function parseDeleteExpression() {
            var node = createNode(165);
            nextToken();
            node.expression = parseUnaryExpressionOrHigher();
            return finishNode(node);
        }
        function parseTypeOfExpression() {
            var node = createNode(166);
            nextToken();
            node.expression = parseUnaryExpressionOrHigher();
            return finishNode(node);
        }
        function parseVoidExpression() {
            var node = createNode(167);
            nextToken();
            node.expression = parseUnaryExpressionOrHigher();
            return finishNode(node);
        }
        function parseUnaryExpressionOrHigher() {
            switch (token) {
                case 33:
                case 34:
                case 47:
                case 46:
                case 38:
                case 39:
                    return parsePrefixUnaryExpression();
                case 74:
                    return parseDeleteExpression();
                case 97:
                    return parseTypeOfExpression();
                case 99:
                    return parseVoidExpression();
                case 24:
                    return parseTypeAssertion();
                default:
                    return parsePostfixExpressionOrHigher();
            }
        }
        function parsePostfixExpressionOrHigher() {
            var expression = parseLeftHandSideExpressionOrHigher();
            ts.Debug.assert(ts.isLeftHandSideExpression(expression));
            if ((token === 38 || token === 39) && !scanner.hasPrecedingLineBreak()) {
                var node = createNode(169, expression.pos);
                node.operand = expression;
                node.operator = token;
                nextToken();
                return finishNode(node);
            }
            return expression;
        }
        function parseLeftHandSideExpressionOrHigher() {
            var expression = token === 91
                ? parseSuperExpression()
                : parseMemberExpressionOrHigher();
            return parseCallExpressionRest(expression);
        }
        function parseMemberExpressionOrHigher() {
            var expression = parsePrimaryExpression();
            return parseMemberExpressionRest(expression);
        }
        function parseSuperExpression() {
            var expression = parseTokenNode();
            if (token === 16 || token === 20) {
                return expression;
            }
            var node = createNode(156, expression.pos);
            node.expression = expression;
            node.dotToken = parseExpectedToken(20, false, ts.Diagnostics.super_must_be_followed_by_an_argument_list_or_member_access);
            node.name = parseRightSideOfDot(true);
            return finishNode(node);
        }
        function parseTypeAssertion() {
            var node = createNode(161);
            parseExpected(24);
            node.type = parseType();
            parseExpected(25);
            node.expression = parseUnaryExpressionOrHigher();
            return finishNode(node);
        }
        function parseMemberExpressionRest(expression) {
            while (true) {
                var dotToken = parseOptionalToken(20);
                if (dotToken) {
                    var propertyAccess = createNode(156, expression.pos);
                    propertyAccess.expression = expression;
                    propertyAccess.dotToken = dotToken;
                    propertyAccess.name = parseRightSideOfDot(true);
                    expression = finishNode(propertyAccess);
                    continue;
                }
                if (!inDecoratorContext() && parseOptional(18)) {
                    var indexedAccess = createNode(157, expression.pos);
                    indexedAccess.expression = expression;
                    if (token !== 19) {
                        indexedAccess.argumentExpression = allowInAnd(parseExpression);
                        if (indexedAccess.argumentExpression.kind === 8 || indexedAccess.argumentExpression.kind === 7) {
                            var literal = indexedAccess.argumentExpression;
                            literal.text = internIdentifier(literal.text);
                        }
                    }
                    parseExpected(19);
                    expression = finishNode(indexedAccess);
                    continue;
                }
                if (token === 10 || token === 11) {
                    var tagExpression = createNode(160, expression.pos);
                    tagExpression.tag = expression;
                    tagExpression.template = token === 10
                        ? parseLiteralNode()
                        : parseTemplateExpression();
                    expression = finishNode(tagExpression);
                    continue;
                }
                return expression;
            }
        }
        function parseCallExpressionRest(expression) {
            while (true) {
                expression = parseMemberExpressionRest(expression);
                if (token === 24) {
                    var typeArguments = tryParse(parseTypeArgumentsInExpression);
                    if (!typeArguments) {
                        return expression;
                    }
                    var callExpr = createNode(158, expression.pos);
                    callExpr.expression = expression;
                    callExpr.typeArguments = typeArguments;
                    callExpr.arguments = parseArgumentList();
                    expression = finishNode(callExpr);
                    continue;
                }
                else if (token === 16) {
                    var callExpr = createNode(158, expression.pos);
                    callExpr.expression = expression;
                    callExpr.arguments = parseArgumentList();
                    expression = finishNode(callExpr);
                    continue;
                }
                return expression;
            }
        }
        function parseArgumentList() {
            parseExpected(16);
            var result = parseDelimitedList(12, parseArgumentExpression);
            parseExpected(17);
            return result;
        }
        function parseTypeArgumentsInExpression() {
            if (!parseOptional(24)) {
                return undefined;
            }
            var typeArguments = parseDelimitedList(17, parseType);
            if (!parseExpected(25)) {
                return undefined;
            }
            return typeArguments && canFollowTypeArgumentsInExpression()
                ? typeArguments
                : undefined;
        }
        function canFollowTypeArgumentsInExpression() {
            switch (token) {
                case 16:
                case 20:
                case 17:
                case 19:
                case 51:
                case 22:
                case 50:
                case 28:
                case 30:
                case 29:
                case 31:
                case 48:
                case 49:
                case 45:
                case 43:
                case 44:
                case 15:
                case 1:
                    return true;
                case 23:
                case 14:
                default:
                    return false;
            }
        }
        function parsePrimaryExpression() {
            switch (token) {
                case 7:
                case 8:
                case 10:
                    return parseLiteralNode();
                case 93:
                case 91:
                case 89:
                case 95:
                case 80:
                    return parseTokenNode();
                case 16:
                    return parseParenthesizedExpression();
                case 18:
                    return parseArrayLiteralExpression();
                case 14:
                    return parseObjectLiteralExpression();
                case 69:
                    return parseClassExpression();
                case 83:
                    return parseFunctionExpression();
                case 88:
                    return parseNewExpression();
                case 36:
                case 57:
                    if (reScanSlashToken() === 9) {
                        return parseLiteralNode();
                    }
                    break;
                case 11:
                    return parseTemplateExpression();
            }
            return parseIdentifier(ts.Diagnostics.Expression_expected);
        }
        function parseParenthesizedExpression() {
            var node = createNode(162);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            return finishNode(node);
        }
        function parseSpreadElement() {
            var node = createNode(174);
            parseExpected(21);
            node.expression = parseAssignmentExpressionOrHigher();
            return finishNode(node);
        }
        function parseArgumentOrArrayLiteralElement() {
            return token === 21 ? parseSpreadElement() :
                token === 23 ? createNode(176) :
                    parseAssignmentExpressionOrHigher();
        }
        function parseArgumentExpression() {
            return doOutsideOfContext(disallowInAndDecoratorContext, parseArgumentOrArrayLiteralElement);
        }
        function parseArrayLiteralExpression() {
            var node = createNode(154);
            parseExpected(18);
            if (scanner.hasPrecedingLineBreak())
                node.flags |= 512;
            node.elements = parseDelimitedList(14, parseArgumentOrArrayLiteralElement);
            parseExpected(19);
            return finishNode(node);
        }
        function tryParseAccessorDeclaration(fullStart, decorators, modifiers) {
            if (parseContextualModifier(116)) {
                return parseAccessorDeclaration(137, fullStart, decorators, modifiers);
            }
            else if (parseContextualModifier(121)) {
                return parseAccessorDeclaration(138, fullStart, decorators, modifiers);
            }
            return undefined;
        }
        function parseObjectLiteralElement() {
            var fullStart = scanner.getStartPos();
            var decorators = parseDecorators();
            var modifiers = parseModifiers();
            var accessor = tryParseAccessorDeclaration(fullStart, decorators, modifiers);
            if (accessor) {
                return accessor;
            }
            var asteriskToken = parseOptionalToken(35);
            var tokenIsIdentifier = isIdentifier();
            var nameToken = token;
            var propertyName = parsePropertyName();
            var questionToken = parseOptionalToken(50);
            if (asteriskToken || token === 16 || token === 24) {
                return parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, propertyName, questionToken);
            }
            if ((token === 23 || token === 15) && tokenIsIdentifier) {
                var shorthandDeclaration = createNode(226, fullStart);
                shorthandDeclaration.name = propertyName;
                shorthandDeclaration.questionToken = questionToken;
                return finishNode(shorthandDeclaration);
            }
            else {
                var propertyAssignment = createNode(225, fullStart);
                propertyAssignment.name = propertyName;
                propertyAssignment.questionToken = questionToken;
                parseExpected(51);
                propertyAssignment.initializer = allowInAnd(parseAssignmentExpressionOrHigher);
                return finishNode(propertyAssignment);
            }
        }
        function parseObjectLiteralExpression() {
            var node = createNode(155);
            parseExpected(14);
            if (scanner.hasPrecedingLineBreak()) {
                node.flags |= 512;
            }
            node.properties = parseDelimitedList(13, parseObjectLiteralElement, true);
            parseExpected(15);
            return finishNode(node);
        }
        function parseFunctionExpression() {
            var saveDecoratorContext = inDecoratorContext();
            if (saveDecoratorContext) {
                setDecoratorContext(false);
            }
            var node = createNode(163);
            parseExpected(83);
            node.asteriskToken = parseOptionalToken(35);
            node.name = node.asteriskToken ? doInYieldContext(parseOptionalIdentifier) : parseOptionalIdentifier();
            fillSignature(51, !!node.asteriskToken, false, node);
            node.body = parseFunctionBlock(!!node.asteriskToken, false);
            if (saveDecoratorContext) {
                setDecoratorContext(true);
            }
            return finishNode(node);
        }
        function parseOptionalIdentifier() {
            return isIdentifier() ? parseIdentifier() : undefined;
        }
        function parseNewExpression() {
            var node = createNode(159);
            parseExpected(88);
            node.expression = parseMemberExpressionOrHigher();
            node.typeArguments = tryParse(parseTypeArgumentsInExpression);
            if (node.typeArguments || token === 16) {
                node.arguments = parseArgumentList();
            }
            return finishNode(node);
        }
        function parseBlock(ignoreMissingOpenBrace, checkForStrictMode, diagnosticMessage) {
            var node = createNode(180);
            if (parseExpected(14, diagnosticMessage) || ignoreMissingOpenBrace) {
                node.statements = parseList(2, checkForStrictMode, parseStatement);
                parseExpected(15);
            }
            else {
                node.statements = createMissingList();
            }
            return finishNode(node);
        }
        function parseFunctionBlock(allowYield, ignoreMissingOpenBrace, diagnosticMessage) {
            var savedYieldContext = inYieldContext();
            setYieldContext(allowYield);
            var saveDecoratorContext = inDecoratorContext();
            if (saveDecoratorContext) {
                setDecoratorContext(false);
            }
            var block = parseBlock(ignoreMissingOpenBrace, true, diagnosticMessage);
            if (saveDecoratorContext) {
                setDecoratorContext(true);
            }
            setYieldContext(savedYieldContext);
            return block;
        }
        function parseEmptyStatement() {
            var node = createNode(182);
            parseExpected(22);
            return finishNode(node);
        }
        function parseIfStatement() {
            var node = createNode(184);
            parseExpected(84);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            node.thenStatement = parseStatement();
            node.elseStatement = parseOptional(76) ? parseStatement() : undefined;
            return finishNode(node);
        }
        function parseDoStatement() {
            var node = createNode(185);
            parseExpected(75);
            node.statement = parseStatement();
            parseExpected(100);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            parseOptional(22);
            return finishNode(node);
        }
        function parseWhileStatement() {
            var node = createNode(186);
            parseExpected(100);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            node.statement = parseStatement();
            return finishNode(node);
        }
        function parseForOrForInOrForOfStatement() {
            var pos = getNodePos();
            parseExpected(82);
            parseExpected(16);
            var initializer = undefined;
            if (token !== 22) {
                if (token === 98 || token === 104 || token === 70) {
                    initializer = parseVariableDeclarationList(true);
                }
                else {
                    initializer = disallowInAnd(parseExpression);
                }
            }
            var forOrForInOrForOfStatement;
            if (parseOptional(86)) {
                var forInStatement = createNode(188, pos);
                forInStatement.initializer = initializer;
                forInStatement.expression = allowInAnd(parseExpression);
                parseExpected(17);
                forOrForInOrForOfStatement = forInStatement;
            }
            else if (parseOptional(126)) {
                var forOfStatement = createNode(189, pos);
                forOfStatement.initializer = initializer;
                forOfStatement.expression = allowInAnd(parseAssignmentExpressionOrHigher);
                parseExpected(17);
                forOrForInOrForOfStatement = forOfStatement;
            }
            else {
                var forStatement = createNode(187, pos);
                forStatement.initializer = initializer;
                parseExpected(22);
                if (token !== 22 && token !== 17) {
                    forStatement.condition = allowInAnd(parseExpression);
                }
                parseExpected(22);
                if (token !== 17) {
                    forStatement.incrementor = allowInAnd(parseExpression);
                }
                parseExpected(17);
                forOrForInOrForOfStatement = forStatement;
            }
            forOrForInOrForOfStatement.statement = parseStatement();
            return finishNode(forOrForInOrForOfStatement);
        }
        function parseBreakOrContinueStatement(kind) {
            var node = createNode(kind);
            parseExpected(kind === 191 ? 66 : 71);
            if (!canParseSemicolon()) {
                node.label = parseIdentifier();
            }
            parseSemicolon();
            return finishNode(node);
        }
        function parseReturnStatement() {
            var node = createNode(192);
            parseExpected(90);
            if (!canParseSemicolon()) {
                node.expression = allowInAnd(parseExpression);
            }
            parseSemicolon();
            return finishNode(node);
        }
        function parseWithStatement() {
            var node = createNode(193);
            parseExpected(101);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            node.statement = parseStatement();
            return finishNode(node);
        }
        function parseCaseClause() {
            var node = createNode(221);
            parseExpected(67);
            node.expression = allowInAnd(parseExpression);
            parseExpected(51);
            node.statements = parseList(4, false, parseStatement);
            return finishNode(node);
        }
        function parseDefaultClause() {
            var node = createNode(222);
            parseExpected(73);
            parseExpected(51);
            node.statements = parseList(4, false, parseStatement);
            return finishNode(node);
        }
        function parseCaseOrDefaultClause() {
            return token === 67 ? parseCaseClause() : parseDefaultClause();
        }
        function parseSwitchStatement() {
            var node = createNode(194);
            parseExpected(92);
            parseExpected(16);
            node.expression = allowInAnd(parseExpression);
            parseExpected(17);
            var caseBlock = createNode(208, scanner.getStartPos());
            parseExpected(14);
            caseBlock.clauses = parseList(3, false, parseCaseOrDefaultClause);
            parseExpected(15);
            node.caseBlock = finishNode(caseBlock);
            return finishNode(node);
        }
        function parseThrowStatement() {
            // ThrowStatement[Yield] :
            //      throw [no LineTerminator here]Expression[In, ?Yield];
            var node = createNode(196);
            parseExpected(94);
            node.expression = scanner.hasPrecedingLineBreak() ? undefined : allowInAnd(parseExpression);
            parseSemicolon();
            return finishNode(node);
        }
        function parseTryStatement() {
            var node = createNode(197);
            parseExpected(96);
            node.tryBlock = parseBlock(false, false);
            node.catchClause = token === 68 ? parseCatchClause() : undefined;
            if (!node.catchClause || token === 81) {
                parseExpected(81);
                node.finallyBlock = parseBlock(false, false);
            }
            return finishNode(node);
        }
        function parseCatchClause() {
            var result = createNode(224);
            parseExpected(68);
            if (parseExpected(16)) {
                result.variableDeclaration = parseVariableDeclaration();
            }
            parseExpected(17);
            result.block = parseBlock(false, false);
            return finishNode(result);
        }
        function parseDebuggerStatement() {
            var node = createNode(198);
            parseExpected(72);
            parseSemicolon();
            return finishNode(node);
        }
        function parseExpressionOrLabeledStatement() {
            var fullStart = scanner.getStartPos();
            var expression = allowInAnd(parseExpression);
            if (expression.kind === 65 && parseOptional(51)) {
                var labeledStatement = createNode(195, fullStart);
                labeledStatement.label = expression;
                labeledStatement.statement = parseStatement();
                return finishNode(labeledStatement);
            }
            else {
                var expressionStatement = createNode(183, fullStart);
                expressionStatement.expression = expression;
                parseSemicolon();
                return finishNode(expressionStatement);
            }
        }
        function isStartOfStatement(inErrorRecovery) {
            if (ts.isModifier(token)) {
                var result = lookAhead(parseVariableStatementOrFunctionDeclarationOrClassDeclarationWithDecoratorsOrModifiers);
                if (result) {
                    return true;
                }
            }
            switch (token) {
                case 22:
                    return !inErrorRecovery;
                case 14:
                case 98:
                case 104:
                case 83:
                case 69:
                case 84:
                case 75:
                case 100:
                case 82:
                case 71:
                case 66:
                case 90:
                case 101:
                case 92:
                case 94:
                case 96:
                case 72:
                case 68:
                case 81:
                    return true;
                case 70:
                    var isConstEnum = lookAhead(nextTokenIsEnumKeyword);
                    return !isConstEnum;
                case 103:
                case 117:
                case 118:
                case 77:
                case 124:
                    if (isDeclarationStart()) {
                        return false;
                    }
                case 108:
                case 106:
                case 107:
                case 109:
                    if (lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine)) {
                        return false;
                    }
                default:
                    return isStartOfExpression();
            }
        }
        function nextTokenIsEnumKeyword() {
            nextToken();
            return token === 77;
        }
        function nextTokenIsIdentifierOrKeywordOnSameLine() {
            nextToken();
            return isIdentifierOrKeyword() && !scanner.hasPrecedingLineBreak();
        }
        function parseStatement() {
            switch (token) {
                case 14:
                    return parseBlock(false, false);
                case 98:
                case 70:
                    return parseVariableStatement(scanner.getStartPos(), undefined, undefined);
                case 83:
                    return parseFunctionDeclaration(scanner.getStartPos(), undefined, undefined);
                case 69:
                    return parseClassDeclaration(scanner.getStartPos(), undefined, undefined);
                case 22:
                    return parseEmptyStatement();
                case 84:
                    return parseIfStatement();
                case 75:
                    return parseDoStatement();
                case 100:
                    return parseWhileStatement();
                case 82:
                    return parseForOrForInOrForOfStatement();
                case 71:
                    return parseBreakOrContinueStatement(190);
                case 66:
                    return parseBreakOrContinueStatement(191);
                case 90:
                    return parseReturnStatement();
                case 101:
                    return parseWithStatement();
                case 92:
                    return parseSwitchStatement();
                case 94:
                    return parseThrowStatement();
                case 96:
                case 68:
                case 81:
                    return parseTryStatement();
                case 72:
                    return parseDebuggerStatement();
                case 104:
                    if (isLetDeclaration()) {
                        return parseVariableStatement(scanner.getStartPos(), undefined, undefined);
                    }
                default:
                    if (ts.isModifier(token) || token === 52) {
                        var result = tryParse(parseVariableStatementOrFunctionDeclarationOrClassDeclarationWithDecoratorsOrModifiers);
                        if (result) {
                            return result;
                        }
                    }
                    return parseExpressionOrLabeledStatement();
            }
        }
        function parseVariableStatementOrFunctionDeclarationOrClassDeclarationWithDecoratorsOrModifiers() {
            var start = scanner.getStartPos();
            var decorators = parseDecorators();
            var modifiers = parseModifiers();
            switch (token) {
                case 70:
                    var nextTokenIsEnum = lookAhead(nextTokenIsEnumKeyword);
                    if (nextTokenIsEnum) {
                        return undefined;
                    }
                    return parseVariableStatement(start, decorators, modifiers);
                case 104:
                    if (!isLetDeclaration()) {
                        return undefined;
                    }
                    return parseVariableStatement(start, decorators, modifiers);
                case 98:
                    return parseVariableStatement(start, decorators, modifiers);
                case 83:
                    return parseFunctionDeclaration(start, decorators, modifiers);
                case 69:
                    return parseClassDeclaration(start, decorators, modifiers);
            }
            return undefined;
        }
        function parseFunctionBlockOrSemicolon(isGenerator, diagnosticMessage) {
            if (token !== 14 && canParseSemicolon()) {
                parseSemicolon();
                return;
            }
            return parseFunctionBlock(isGenerator, false, diagnosticMessage);
        }
        function parseArrayBindingElement() {
            if (token === 23) {
                return createNode(176);
            }
            var node = createNode(153);
            node.dotDotDotToken = parseOptionalToken(21);
            node.name = parseIdentifierOrPattern();
            node.initializer = parseInitializer(false);
            return finishNode(node);
        }
        function parseObjectBindingElement() {
            var node = createNode(153);
            var tokenIsIdentifier = isIdentifier();
            var propertyName = parsePropertyName();
            if (tokenIsIdentifier && token !== 51) {
                node.name = propertyName;
            }
            else {
                parseExpected(51);
                node.propertyName = propertyName;
                node.name = parseIdentifierOrPattern();
            }
            node.initializer = parseInitializer(false);
            return finishNode(node);
        }
        function parseObjectBindingPattern() {
            var node = createNode(151);
            parseExpected(14);
            node.elements = parseDelimitedList(10, parseObjectBindingElement);
            parseExpected(15);
            return finishNode(node);
        }
        function parseArrayBindingPattern() {
            var node = createNode(152);
            parseExpected(18);
            node.elements = parseDelimitedList(11, parseArrayBindingElement);
            parseExpected(19);
            return finishNode(node);
        }
        function isIdentifierOrPattern() {
            return token === 14 || token === 18 || isIdentifier();
        }
        function parseIdentifierOrPattern() {
            if (token === 18) {
                return parseArrayBindingPattern();
            }
            if (token === 14) {
                return parseObjectBindingPattern();
            }
            return parseIdentifier();
        }
        function parseVariableDeclaration() {
            var node = createNode(199);
            node.name = parseIdentifierOrPattern();
            node.type = parseTypeAnnotation();
            if (!isInOrOfKeyword(token)) {
                node.initializer = parseInitializer(false);
            }
            return finishNode(node);
        }
        function parseVariableDeclarationList(inForStatementInitializer) {
            var node = createNode(200);
            switch (token) {
                case 98:
                    break;
                case 104:
                    node.flags |= 4096;
                    break;
                case 70:
                    node.flags |= 8192;
                    break;
                default:
                    ts.Debug.fail();
            }
            nextToken();
            if (token === 126 && lookAhead(canFollowContextualOfKeyword)) {
                node.declarations = createMissingList();
            }
            else {
                var savedDisallowIn = inDisallowInContext();
                setDisallowInContext(inForStatementInitializer);
                node.declarations = parseDelimitedList(9, parseVariableDeclaration);
                setDisallowInContext(savedDisallowIn);
            }
            return finishNode(node);
        }
        function canFollowContextualOfKeyword() {
            return nextTokenIsIdentifier() && nextToken() === 17;
        }
        function parseVariableStatement(fullStart, decorators, modifiers) {
            var node = createNode(181, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            node.declarationList = parseVariableDeclarationList(false);
            parseSemicolon();
            return finishNode(node);
        }
        function parseFunctionDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(201, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(83);
            node.asteriskToken = parseOptionalToken(35);
            node.name = node.flags & 256 ? parseOptionalIdentifier() : parseIdentifier();
            fillSignature(51, !!node.asteriskToken, false, node);
            node.body = parseFunctionBlockOrSemicolon(!!node.asteriskToken, ts.Diagnostics.or_expected);
            return finishNode(node);
        }
        function parseConstructorDeclaration(pos, decorators, modifiers) {
            var node = createNode(136, pos);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(114);
            fillSignature(51, false, false, node);
            node.body = parseFunctionBlockOrSemicolon(false, ts.Diagnostics.or_expected);
            return finishNode(node);
        }
        function parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, name, questionToken, diagnosticMessage) {
            var method = createNode(135, fullStart);
            method.decorators = decorators;
            setModifiers(method, modifiers);
            method.asteriskToken = asteriskToken;
            method.name = name;
            method.questionToken = questionToken;
            fillSignature(51, !!asteriskToken, false, method);
            method.body = parseFunctionBlockOrSemicolon(!!asteriskToken, diagnosticMessage);
            return finishNode(method);
        }
        function parsePropertyDeclaration(fullStart, decorators, modifiers, name, questionToken) {
            var property = createNode(133, fullStart);
            property.decorators = decorators;
            setModifiers(property, modifiers);
            property.name = name;
            property.questionToken = questionToken;
            property.type = parseTypeAnnotation();
            property.initializer = allowInAnd(parseNonParameterInitializer);
            parseSemicolon();
            return finishNode(property);
        }
        function parsePropertyOrMethodDeclaration(fullStart, decorators, modifiers) {
            var asteriskToken = parseOptionalToken(35);
            var name = parsePropertyName();
            var questionToken = parseOptionalToken(50);
            if (asteriskToken || token === 16 || token === 24) {
                return parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, name, questionToken, ts.Diagnostics.or_expected);
            }
            else {
                return parsePropertyDeclaration(fullStart, decorators, modifiers, name, questionToken);
            }
        }
        function parseNonParameterInitializer() {
            return parseInitializer(false);
        }
        function parseAccessorDeclaration(kind, fullStart, decorators, modifiers) {
            var node = createNode(kind, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            node.name = parsePropertyName();
            fillSignature(51, false, false, node);
            node.body = parseFunctionBlockOrSemicolon(false);
            return finishNode(node);
        }
        function isClassMemberModifier(idToken) {
            switch (idToken) {
                case 108:
                case 106:
                case 107:
                case 109:
                    return true;
                default:
                    return false;
            }
        }
        function isClassMemberStart() {
            var idToken;
            if (token === 52) {
                return true;
            }
            while (ts.isModifier(token)) {
                idToken = token;
                if (isClassMemberModifier(idToken)) {
                    return true;
                }
                nextToken();
            }
            if (token === 35) {
                return true;
            }
            if (isLiteralPropertyName()) {
                idToken = token;
                nextToken();
            }
            if (token === 18) {
                return true;
            }
            if (idToken !== undefined) {
                if (!ts.isKeyword(idToken) || idToken === 121 || idToken === 116) {
                    return true;
                }
                switch (token) {
                    case 16:
                    case 24:
                    case 51:
                    case 53:
                    case 50:
                        return true;
                    default:
                        return canParseSemicolon();
                }
            }
            return false;
        }
        function parseDecorators() {
            var decorators;
            while (true) {
                var decoratorStart = getNodePos();
                if (!parseOptional(52)) {
                    break;
                }
                if (!decorators) {
                    decorators = [];
                    decorators.pos = scanner.getStartPos();
                }
                var decorator = createNode(131, decoratorStart);
                decorator.expression = doInDecoratorContext(parseLeftHandSideExpressionOrHigher);
                decorators.push(finishNode(decorator));
            }
            if (decorators) {
                decorators.end = getNodeEnd();
            }
            return decorators;
        }
        function parseModifiers() {
            var flags = 0;
            var modifiers;
            while (true) {
                var modifierStart = scanner.getStartPos();
                var modifierKind = token;
                if (!parseAnyContextualModifier()) {
                    break;
                }
                if (!modifiers) {
                    modifiers = [];
                    modifiers.pos = modifierStart;
                }
                flags |= ts.modifierToFlag(modifierKind);
                modifiers.push(finishNode(createNode(modifierKind, modifierStart)));
            }
            if (modifiers) {
                modifiers.flags = flags;
                modifiers.end = scanner.getStartPos();
            }
            return modifiers;
        }
        function parseClassElement() {
            if (token === 22) {
                var result = createNode(179);
                nextToken();
                return finishNode(result);
            }
            var fullStart = getNodePos();
            var decorators = parseDecorators();
            var modifiers = parseModifiers();
            var accessor = tryParseAccessorDeclaration(fullStart, decorators, modifiers);
            if (accessor) {
                return accessor;
            }
            if (token === 114) {
                return parseConstructorDeclaration(fullStart, decorators, modifiers);
            }
            if (isIndexSignature()) {
                return parseIndexSignatureDeclaration(fullStart, decorators, modifiers);
            }
            if (isIdentifierOrKeyword() ||
                token === 8 ||
                token === 7 ||
                token === 35 ||
                token === 18) {
                return parsePropertyOrMethodDeclaration(fullStart, decorators, modifiers);
            }
            if (decorators) {
                var name_3 = createMissingNode(65, true, ts.Diagnostics.Declaration_expected);
                return parsePropertyDeclaration(fullStart, decorators, modifiers, name_3, undefined);
            }
            ts.Debug.fail("Should not have attempted to parse class member declaration.");
        }
        function parseClassExpression() {
            return parseClassDeclarationOrExpression(scanner.getStartPos(), undefined, undefined, 175);
        }
        function parseClassDeclaration(fullStart, decorators, modifiers) {
            return parseClassDeclarationOrExpression(fullStart, decorators, modifiers, 202);
        }
        function parseClassDeclarationOrExpression(fullStart, decorators, modifiers, kind) {
            var savedStrictModeContext = inStrictModeContext();
            setStrictModeContext(true);
            var node = createNode(kind, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(69);
            node.name = parseOptionalIdentifier();
            node.typeParameters = parseTypeParameters();
            node.heritageClauses = parseHeritageClauses(true);
            if (parseExpected(14)) {
                node.members = inGeneratorParameterContext()
                    ? doOutsideOfYieldContext(parseClassMembers)
                    : parseClassMembers();
                parseExpected(15);
            }
            else {
                node.members = createMissingList();
            }
            var finishedNode = finishNode(node);
            setStrictModeContext(savedStrictModeContext);
            return finishedNode;
        }
        function parseHeritageClauses(isClassHeritageClause) {
            // ClassTail[Yield,GeneratorParameter] : See 14.5
            //      [~GeneratorParameter]ClassHeritage[?Yield]opt { ClassBody[?Yield]opt }
            //      [+GeneratorParameter] ClassHeritageopt { ClassBodyopt }
            if (isHeritageClause()) {
                return isClassHeritageClause && inGeneratorParameterContext()
                    ? doOutsideOfYieldContext(parseHeritageClausesWorker)
                    : parseHeritageClausesWorker();
            }
            return undefined;
        }
        function parseHeritageClausesWorker() {
            return parseList(19, false, parseHeritageClause);
        }
        function parseHeritageClause() {
            if (token === 79 || token === 102) {
                var node = createNode(223);
                node.token = token;
                nextToken();
                node.types = parseDelimitedList(8, parseExpressionWithTypeArguments);
                return finishNode(node);
            }
            return undefined;
        }
        function parseExpressionWithTypeArguments() {
            var node = createNode(177);
            node.expression = parseLeftHandSideExpressionOrHigher();
            if (token === 24) {
                node.typeArguments = parseBracketedList(17, parseType, 24, 25);
            }
            return finishNode(node);
        }
        function isHeritageClause() {
            return token === 79 || token === 102;
        }
        function parseClassMembers() {
            return parseList(6, false, parseClassElement);
        }
        function parseInterfaceDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(203, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(103);
            node.name = parseIdentifier();
            node.typeParameters = parseTypeParameters();
            node.heritageClauses = parseHeritageClauses(false);
            node.members = parseObjectTypeMembers();
            return finishNode(node);
        }
        function parseTypeAliasDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(204, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(124);
            node.name = parseIdentifier();
            parseExpected(53);
            node.type = parseType();
            parseSemicolon();
            return finishNode(node);
        }
        function parseEnumMember() {
            var node = createNode(227, scanner.getStartPos());
            node.name = parsePropertyName();
            node.initializer = allowInAnd(parseNonParameterInitializer);
            return finishNode(node);
        }
        function parseEnumDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(205, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            parseExpected(77);
            node.name = parseIdentifier();
            if (parseExpected(14)) {
                node.members = parseDelimitedList(7, parseEnumMember);
                parseExpected(15);
            }
            else {
                node.members = createMissingList();
            }
            return finishNode(node);
        }
        function parseModuleBlock() {
            var node = createNode(207, scanner.getStartPos());
            if (parseExpected(14)) {
                node.statements = parseList(1, false, parseModuleElement);
                parseExpected(15);
            }
            else {
                node.statements = createMissingList();
            }
            return finishNode(node);
        }
        function parseModuleOrNamespaceDeclaration(fullStart, decorators, modifiers, flags) {
            var node = createNode(206, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            node.flags |= flags;
            node.name = parseIdentifier();
            node.body = parseOptional(20)
                ? parseModuleOrNamespaceDeclaration(getNodePos(), undefined, undefined, 1)
                : parseModuleBlock();
            return finishNode(node);
        }
        function parseAmbientExternalModuleDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(206, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            node.name = parseLiteralNode(true);
            node.body = parseModuleBlock();
            return finishNode(node);
        }
        function parseModuleDeclaration(fullStart, decorators, modifiers) {
            var flags = modifiers ? modifiers.flags : 0;
            if (parseOptional(118)) {
                flags |= 32768;
            }
            else {
                parseExpected(117);
                if (token === 8) {
                    return parseAmbientExternalModuleDeclaration(fullStart, decorators, modifiers);
                }
            }
            return parseModuleOrNamespaceDeclaration(fullStart, decorators, modifiers, flags);
        }
        function isExternalModuleReference() {
            return token === 119 &&
                lookAhead(nextTokenIsOpenParen);
        }
        function nextTokenIsOpenParen() {
            return nextToken() === 16;
        }
        function nextTokenIsCommaOrFromKeyword() {
            nextToken();
            return token === 23 ||
                token === 125;
        }
        function parseImportDeclarationOrImportEqualsDeclaration(fullStart, decorators, modifiers) {
            parseExpected(85);
            var afterImportPos = scanner.getStartPos();
            var identifier;
            if (isIdentifier()) {
                identifier = parseIdentifier();
                if (token !== 23 && token !== 125) {
                    var importEqualsDeclaration = createNode(209, fullStart);
                    importEqualsDeclaration.decorators = decorators;
                    setModifiers(importEqualsDeclaration, modifiers);
                    importEqualsDeclaration.name = identifier;
                    parseExpected(53);
                    importEqualsDeclaration.moduleReference = parseModuleReference();
                    parseSemicolon();
                    return finishNode(importEqualsDeclaration);
                }
            }
            var importDeclaration = createNode(210, fullStart);
            importDeclaration.decorators = decorators;
            setModifiers(importDeclaration, modifiers);
            if (identifier ||
                token === 35 ||
                token === 14) {
                importDeclaration.importClause = parseImportClause(identifier, afterImportPos);
                parseExpected(125);
            }
            importDeclaration.moduleSpecifier = parseModuleSpecifier();
            parseSemicolon();
            return finishNode(importDeclaration);
        }
        function parseImportClause(identifier, fullStart) {
            //ImportClause:
            //  ImportedDefaultBinding
            //  NameSpaceImport
            //  NamedImports
            //  ImportedDefaultBinding, NameSpaceImport
            //  ImportedDefaultBinding, NamedImports
            var importClause = createNode(211, fullStart);
            if (identifier) {
                importClause.name = identifier;
            }
            if (!importClause.name ||
                parseOptional(23)) {
                importClause.namedBindings = token === 35 ? parseNamespaceImport() : parseNamedImportsOrExports(213);
            }
            return finishNode(importClause);
        }
        function parseModuleReference() {
            return isExternalModuleReference()
                ? parseExternalModuleReference()
                : parseEntityName(false);
        }
        function parseExternalModuleReference() {
            var node = createNode(220);
            parseExpected(119);
            parseExpected(16);
            node.expression = parseModuleSpecifier();
            parseExpected(17);
            return finishNode(node);
        }
        function parseModuleSpecifier() {
            var result = parseExpression();
            if (result.kind === 8) {
                internIdentifier(result.text);
            }
            return result;
        }
        function parseNamespaceImport() {
            var namespaceImport = createNode(212);
            parseExpected(35);
            parseExpected(111);
            namespaceImport.name = parseIdentifier();
            return finishNode(namespaceImport);
        }
        function parseNamedImportsOrExports(kind) {
            var node = createNode(kind);
            node.elements = parseBracketedList(20, kind === 213 ? parseImportSpecifier : parseExportSpecifier, 14, 15);
            return finishNode(node);
        }
        function parseExportSpecifier() {
            return parseImportOrExportSpecifier(218);
        }
        function parseImportSpecifier() {
            return parseImportOrExportSpecifier(214);
        }
        function parseImportOrExportSpecifier(kind) {
            var node = createNode(kind);
            var checkIdentifierIsKeyword = ts.isKeyword(token) && !isIdentifier();
            var checkIdentifierStart = scanner.getTokenPos();
            var checkIdentifierEnd = scanner.getTextPos();
            var identifierName = parseIdentifierName();
            if (token === 111) {
                node.propertyName = identifierName;
                parseExpected(111);
                checkIdentifierIsKeyword = ts.isKeyword(token) && !isIdentifier();
                checkIdentifierStart = scanner.getTokenPos();
                checkIdentifierEnd = scanner.getTextPos();
                node.name = parseIdentifierName();
            }
            else {
                node.name = identifierName;
            }
            if (kind === 214 && checkIdentifierIsKeyword) {
                parseErrorAtPosition(checkIdentifierStart, checkIdentifierEnd - checkIdentifierStart, ts.Diagnostics.Identifier_expected);
            }
            return finishNode(node);
        }
        function parseExportDeclaration(fullStart, decorators, modifiers) {
            var node = createNode(216, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            if (parseOptional(35)) {
                parseExpected(125);
                node.moduleSpecifier = parseModuleSpecifier();
            }
            else {
                node.exportClause = parseNamedImportsOrExports(217);
                if (parseOptional(125)) {
                    node.moduleSpecifier = parseModuleSpecifier();
                }
            }
            parseSemicolon();
            return finishNode(node);
        }
        function parseExportAssignment(fullStart, decorators, modifiers) {
            var node = createNode(215, fullStart);
            node.decorators = decorators;
            setModifiers(node, modifiers);
            if (parseOptional(53)) {
                node.isExportEquals = true;
            }
            else {
                parseExpected(73);
            }
            node.expression = parseAssignmentExpressionOrHigher();
            parseSemicolon();
            return finishNode(node);
        }
        function isLetDeclaration() {
            return inStrictModeContext() || lookAhead(nextTokenIsIdentifierOrStartOfDestructuringOnTheSameLine);
        }
        function isDeclarationStart(followsModifier) {
            switch (token) {
                case 98:
                case 70:
                case 83:
                    return true;
                case 104:
                    return isLetDeclaration();
                case 69:
                case 103:
                case 77:
                case 124:
                    return lookAhead(nextTokenIsIdentifierOrKeyword);
                case 85:
                    return lookAhead(nextTokenCanFollowImportKeyword);
                case 117:
                case 118:
                    return lookAhead(nextTokenIsIdentifierOrKeywordOrStringLiteral);
                case 78:
                    return lookAhead(nextTokenCanFollowExportKeyword);
                case 115:
                case 108:
                case 106:
                case 107:
                case 109:
                    return lookAhead(nextTokenIsDeclarationStart);
                case 52:
                    return !followsModifier;
            }
        }
        function isIdentifierOrKeyword() {
            return token >= 65;
        }
        function nextTokenIsIdentifierOrKeyword() {
            nextToken();
            return isIdentifierOrKeyword();
        }
        function nextTokenIsIdentifierOrKeywordOrStringLiteral() {
            nextToken();
            return isIdentifierOrKeyword() || token === 8;
        }
        function nextTokenCanFollowImportKeyword() {
            nextToken();
            return isIdentifierOrKeyword() || token === 8 ||
                token === 35 || token === 14;
        }
        function nextTokenCanFollowExportKeyword() {
            nextToken();
            return token === 53 || token === 35 ||
                token === 14 || token === 73 || isDeclarationStart(true);
        }
        function nextTokenIsDeclarationStart() {
            nextToken();
            return isDeclarationStart(true);
        }
        function nextTokenIsAsKeyword() {
            return nextToken() === 111;
        }
        function parseDeclaration() {
            var fullStart = getNodePos();
            var decorators = parseDecorators();
            var modifiers = parseModifiers();
            if (token === 78) {
                nextToken();
                if (token === 73 || token === 53) {
                    return parseExportAssignment(fullStart, decorators, modifiers);
                }
                if (token === 35 || token === 14) {
                    return parseExportDeclaration(fullStart, decorators, modifiers);
                }
            }
            switch (token) {
                case 98:
                case 104:
                case 70:
                    return parseVariableStatement(fullStart, decorators, modifiers);
                case 83:
                    return parseFunctionDeclaration(fullStart, decorators, modifiers);
                case 69:
                    return parseClassDeclaration(fullStart, decorators, modifiers);
                case 103:
                    return parseInterfaceDeclaration(fullStart, decorators, modifiers);
                case 124:
                    return parseTypeAliasDeclaration(fullStart, decorators, modifiers);
                case 77:
                    return parseEnumDeclaration(fullStart, decorators, modifiers);
                case 117:
                case 118:
                    return parseModuleDeclaration(fullStart, decorators, modifiers);
                case 85:
                    return parseImportDeclarationOrImportEqualsDeclaration(fullStart, decorators, modifiers);
                default:
                    if (decorators) {
                        var node = createMissingNode(219, true, ts.Diagnostics.Declaration_expected);
                        node.pos = fullStart;
                        node.decorators = decorators;
                        setModifiers(node, modifiers);
                        return finishNode(node);
                    }
                    ts.Debug.fail("Mismatch between isDeclarationStart and parseDeclaration");
            }
        }
        function isSourceElement(inErrorRecovery) {
            return isDeclarationStart() || isStartOfStatement(inErrorRecovery);
        }
        function parseSourceElement() {
            return parseSourceElementOrModuleElement();
        }
        function parseModuleElement() {
            return parseSourceElementOrModuleElement();
        }
        function parseSourceElementOrModuleElement() {
            return isDeclarationStart()
                ? parseDeclaration()
                : parseStatement();
        }
        function processReferenceComments(sourceFile) {
            var triviaScanner = ts.createScanner(sourceFile.languageVersion, false, sourceText);
            var referencedFiles = [];
            var amdDependencies = [];
            var amdModuleName;
            while (true) {
                var kind = triviaScanner.scan();
                if (kind === 5 || kind === 4 || kind === 3) {
                    continue;
                }
                if (kind !== 2) {
                    break;
                }
                var range = { pos: triviaScanner.getTokenPos(), end: triviaScanner.getTextPos(), kind: triviaScanner.getToken() };
                var comment = sourceText.substring(range.pos, range.end);
                var referencePathMatchResult = ts.getFileReferenceFromReferencePath(comment, range);
                if (referencePathMatchResult) {
                    var fileReference = referencePathMatchResult.fileReference;
                    sourceFile.hasNoDefaultLib = referencePathMatchResult.isNoDefaultLib;
                    var diagnosticMessage = referencePathMatchResult.diagnosticMessage;
                    if (fileReference) {
                        referencedFiles.push(fileReference);
                    }
                    if (diagnosticMessage) {
                        sourceFile.parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, range.pos, range.end - range.pos, diagnosticMessage));
                    }
                }
                else {
                    var amdModuleNameRegEx = /^\/\/\/\s*<amd-module\s+name\s*=\s*('|")(.+?)\1/gim;
                    var amdModuleNameMatchResult = amdModuleNameRegEx.exec(comment);
                    if (amdModuleNameMatchResult) {
                        if (amdModuleName) {
                            sourceFile.parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, range.pos, range.end - range.pos, ts.Diagnostics.An_AMD_module_cannot_have_multiple_name_assignments));
                        }
                        amdModuleName = amdModuleNameMatchResult[2];
                    }
                    var amdDependencyRegEx = /^\/\/\/\s*<amd-dependency\s/gim;
                    var pathRegex = /\spath\s*=\s*('|")(.+?)\1/gim;
                    var nameRegex = /\sname\s*=\s*('|")(.+?)\1/gim;
                    var amdDependencyMatchResult = amdDependencyRegEx.exec(comment);
                    if (amdDependencyMatchResult) {
                        var pathMatchResult = pathRegex.exec(comment);
                        var nameMatchResult = nameRegex.exec(comment);
                        if (pathMatchResult) {
                            var amdDependency = { path: pathMatchResult[2], name: nameMatchResult ? nameMatchResult[2] : undefined };
                            amdDependencies.push(amdDependency);
                        }
                    }
                }
            }
            sourceFile.referencedFiles = referencedFiles;
            sourceFile.amdDependencies = amdDependencies;
            sourceFile.amdModuleName = amdModuleName;
        }
        function setExternalModuleIndicator(sourceFile) {
            sourceFile.externalModuleIndicator = ts.forEach(sourceFile.statements, function (node) {
                return node.flags & 1
                    || node.kind === 209 && node.moduleReference.kind === 220
                    || node.kind === 210
                    || node.kind === 215
                    || node.kind === 216
                    ? node
                    : undefined;
            });
        }
    })(Parser || (Parser = {}));
    var IncrementalParser;
    (function (IncrementalParser) {
        function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) {
            aggressiveChecks = aggressiveChecks || ts.Debug.shouldAssert(2);
            checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks);
            if (ts.textChangeRangeIsUnchanged(textChangeRange)) {
                return sourceFile;
            }
            if (sourceFile.statements.length === 0) {
                return Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, undefined, true);
            }
            var incrementalSourceFile = sourceFile;
            ts.Debug.assert(!incrementalSourceFile.hasBeenIncrementallyParsed);
            incrementalSourceFile.hasBeenIncrementallyParsed = true;
            var oldText = sourceFile.text;
            var syntaxCursor = createSyntaxCursor(sourceFile);
            var changeRange = extendToAffectedRange(sourceFile, textChangeRange);
            checkChangeRange(sourceFile, newText, changeRange, aggressiveChecks);
            ts.Debug.assert(changeRange.span.start <= textChangeRange.span.start);
            ts.Debug.assert(ts.textSpanEnd(changeRange.span) === ts.textSpanEnd(textChangeRange.span));
            ts.Debug.assert(ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)) === ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange)));
            var delta = ts.textChangeRangeNewSpan(changeRange).length - changeRange.span.length;
            updateTokenPositionsAndMarkElements(incrementalSourceFile, changeRange.span.start, ts.textSpanEnd(changeRange.span), ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)), delta, oldText, newText, aggressiveChecks);
            var result = Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, syntaxCursor, true);
            return result;
        }
        IncrementalParser.updateSourceFile = updateSourceFile;
        function moveElementEntirelyPastChangeRange(element, isArray, delta, oldText, newText, aggressiveChecks) {
            if (isArray) {
                visitArray(element);
            }
            else {
                visitNode(element);
            }
            return;
            function visitNode(node) {
                if (aggressiveChecks && shouldCheckNode(node)) {
                    var text = oldText.substring(node.pos, node.end);
                }
                node._children = undefined;
                node.pos += delta;
                node.end += delta;
                if (aggressiveChecks && shouldCheckNode(node)) {
                    ts.Debug.assert(text === newText.substring(node.pos, node.end));
                }
                forEachChild(node, visitNode, visitArray);
                checkNodePositions(node, aggressiveChecks);
            }
            function visitArray(array) {
                array._children = undefined;
                array.pos += delta;
                array.end += delta;
                for (var _i = 0; _i < array.length; _i++) {
                    var node = array[_i];
                    visitNode(node);
                }
            }
        }
        function shouldCheckNode(node) {
            switch (node.kind) {
                case 8:
                case 7:
                case 65:
                    return true;
            }
            return false;
        }
        function adjustIntersectingElement(element, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta) {
            ts.Debug.assert(element.end >= changeStart, "Adjusting an element that was entirely before the change range");
            ts.Debug.assert(element.pos <= changeRangeOldEnd, "Adjusting an element that was entirely after the change range");
            ts.Debug.assert(element.pos <= element.end);
            element.pos = Math.min(element.pos, changeRangeNewEnd);
            if (element.end >= changeRangeOldEnd) {
                element.end += delta;
            }
            else {
                element.end = Math.min(element.end, changeRangeNewEnd);
            }
            ts.Debug.assert(element.pos <= element.end);
            if (element.parent) {
                ts.Debug.assert(element.pos >= element.parent.pos);
                ts.Debug.assert(element.end <= element.parent.end);
            }
        }
        function checkNodePositions(node, aggressiveChecks) {
            if (aggressiveChecks) {
                var pos = node.pos;
                forEachChild(node, function (child) {
                    ts.Debug.assert(child.pos >= pos);
                    pos = child.end;
                });
                ts.Debug.assert(pos <= node.end);
            }
        }
        function updateTokenPositionsAndMarkElements(sourceFile, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta, oldText, newText, aggressiveChecks) {
            visitNode(sourceFile);
            return;
            function visitNode(child) {
                ts.Debug.assert(child.pos <= child.end);
                if (child.pos > changeRangeOldEnd) {
                    moveElementEntirelyPastChangeRange(child, false, delta, oldText, newText, aggressiveChecks);
                    return;
                }
                var fullEnd = child.end;
                if (fullEnd >= changeStart) {
                    child.intersectsChange = true;
                    child._children = undefined;
                    adjustIntersectingElement(child, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta);
                    forEachChild(child, visitNode, visitArray);
                    checkNodePositions(child, aggressiveChecks);
                    return;
                }
                ts.Debug.assert(fullEnd < changeStart);
            }
            function visitArray(array) {
                ts.Debug.assert(array.pos <= array.end);
                if (array.pos > changeRangeOldEnd) {
                    moveElementEntirelyPastChangeRange(array, true, delta, oldText, newText, aggressiveChecks);
                    return;
                }
                var fullEnd = array.end;
                if (fullEnd >= changeStart) {
                    array.intersectsChange = true;
                    array._children = undefined;
                    adjustIntersectingElement(array, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta);
                    for (var _i = 0; _i < array.length; _i++) {
                        var node = array[_i];
                        visitNode(node);
                    }
                    return;
                }
                ts.Debug.assert(fullEnd < changeStart);
            }
        }
        function extendToAffectedRange(sourceFile, changeRange) {
            var maxLookahead = 1;
            var start = changeRange.span.start;
            for (var i = 0; start > 0 && i <= maxLookahead; i++) {
                var nearestNode = findNearestNodeStartingBeforeOrAtPosition(sourceFile, start);
                ts.Debug.assert(nearestNode.pos <= start);
                var position = nearestNode.pos;
                start = Math.max(0, position - 1);
            }
            var finalSpan = ts.createTextSpanFromBounds(start, ts.textSpanEnd(changeRange.span));
            var finalLength = changeRange.newLength + (changeRange.span.start - start);
            return ts.createTextChangeRange(finalSpan, finalLength);
        }
        function findNearestNodeStartingBeforeOrAtPosition(sourceFile, position) {
            var bestResult = sourceFile;
            var lastNodeEntirelyBeforePosition;
            forEachChild(sourceFile, visit);
            if (lastNodeEntirelyBeforePosition) {
                var lastChildOfLastEntireNodeBeforePosition = getLastChild(lastNodeEntirelyBeforePosition);
                if (lastChildOfLastEntireNodeBeforePosition.pos > bestResult.pos) {
                    bestResult = lastChildOfLastEntireNodeBeforePosition;
                }
            }
            return bestResult;
            function getLastChild(node) {
                while (true) {
                    var lastChild = getLastChildWorker(node);
                    if (lastChild) {
                        node = lastChild;
                    }
                    else {
                        return node;
                    }
                }
            }
            function getLastChildWorker(node) {
                var last = undefined;
                forEachChild(node, function (child) {
                    if (ts.nodeIsPresent(child)) {
                        last = child;
                    }
                });
                return last;
            }
            function visit(child) {
                if (ts.nodeIsMissing(child)) {
                    return;
                }
                if (child.pos <= position) {
                    if (child.pos >= bestResult.pos) {
                        bestResult = child;
                    }
                    if (position < child.end) {
                        forEachChild(child, visit);
                        return true;
                    }
                    else {
                        ts.Debug.assert(child.end <= position);
                        lastNodeEntirelyBeforePosition = child;
                    }
                }
                else {
                    ts.Debug.assert(child.pos > position);
                    return true;
                }
            }
        }
        function checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks) {
            var oldText = sourceFile.text;
            if (textChangeRange) {
                ts.Debug.assert((oldText.length - textChangeRange.span.length + textChangeRange.newLength) === newText.length);
                if (aggressiveChecks || ts.Debug.shouldAssert(3)) {
                    var oldTextPrefix = oldText.substr(0, textChangeRange.span.start);
                    var newTextPrefix = newText.substr(0, textChangeRange.span.start);
                    ts.Debug.assert(oldTextPrefix === newTextPrefix);
                    var oldTextSuffix = oldText.substring(ts.textSpanEnd(textChangeRange.span), oldText.length);
                    var newTextSuffix = newText.substring(ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange)), newText.length);
                    ts.Debug.assert(oldTextSuffix === newTextSuffix);
                }
            }
        }
        function createSyntaxCursor(sourceFile) {
            var currentArray = sourceFile.statements;
            var currentArrayIndex = 0;
            ts.Debug.assert(currentArrayIndex < currentArray.length);
            var current = currentArray[currentArrayIndex];
            var lastQueriedPosition = -1;
            return {
                currentNode: function (position) {
                    if (position !== lastQueriedPosition) {
                        if (current && current.end === position && currentArrayIndex < (currentArray.length - 1)) {
                            currentArrayIndex++;
                            current = currentArray[currentArrayIndex];
                        }
                        if (!current || current.pos !== position) {
                            findHighestListElementThatStartsAtPosition(position);
                        }
                    }
                    lastQueriedPosition = position;
                    ts.Debug.assert(!current || current.pos === position);
                    return current;
                }
            };
            function findHighestListElementThatStartsAtPosition(position) {
                currentArray = undefined;
                currentArrayIndex = -1;
                current = undefined;
                forEachChild(sourceFile, visitNode, visitArray);
                return;
                function visitNode(node) {
                    if (position >= node.pos && position < node.end) {
                        forEachChild(node, visitNode, visitArray);
                        return true;
                    }
                    return false;
                }
                function visitArray(array) {
                    if (position >= array.pos && position < array.end) {
                        for (var i = 0, n = array.length; i < n; i++) {
                            var child = array[i];
                            if (child) {
                                if (child.pos === position) {
                                    currentArray = array;
                                    currentArrayIndex = i;
                                    current = child;
                                    return true;
                                }
                                else {
                                    if (child.pos < position && position < child.end) {
                                        forEachChild(child, visitNode, visitArray);
                                        return true;
                                    }
                                }
                            }
                        }
                    }
                    return false;
                }
            }
        }
    })(IncrementalParser || (IncrementalParser = {}));
})(ts || (ts = {}));
/// <reference path="parser.ts"/>
var ts;
(function (ts) {
    ts.bindTime = 0;
    function getModuleInstanceState(node) {
        if (node.kind === 203 || node.kind === 204) {
            return 0;
        }
        else if (ts.isConstEnumDeclaration(node)) {
            return 2;
        }
        else if ((node.kind === 210 || node.kind === 209) && !(node.flags & 1)) {
            return 0;
        }
        else if (node.kind === 207) {
            var state = 0;
            ts.forEachChild(node, function (n) {
                switch (getModuleInstanceState(n)) {
                    case 0:
                        return false;
                    case 2:
                        state = 2;
                        return false;
                    case 1:
                        state = 1;
                        return true;
                }
            });
            return state;
        }
        else if (node.kind === 206) {
            return getModuleInstanceState(node.body);
        }
        else {
            return 1;
        }
    }
    ts.getModuleInstanceState = getModuleInstanceState;
    function bindSourceFile(file) {
        var start = new Date().getTime();
        bindSourceFileWorker(file);
        ts.bindTime += new Date().getTime() - start;
    }
    ts.bindSourceFile = bindSourceFile;
    function bindSourceFileWorker(file) {
        var parent;
        var container;
        var blockScopeContainer;
        var lastContainer;
        var symbolCount = 0;
        var Symbol = ts.objectAllocator.getSymbolConstructor();
        if (!file.locals) {
            file.locals = {};
            container = file;
            setBlockScopeContainer(file, false);
            bind(file);
            file.symbolCount = symbolCount;
        }
        function createSymbol(flags, name) {
            symbolCount++;
            return new Symbol(flags, name);
        }
        function setBlockScopeContainer(node, cleanLocals) {
            blockScopeContainer = node;
            if (cleanLocals) {
                blockScopeContainer.locals = undefined;
            }
        }
        function addDeclarationToSymbol(symbol, node, symbolKind) {
            symbol.flags |= symbolKind;
            if (!symbol.declarations)
                symbol.declarations = [];
            symbol.declarations.push(node);
            if (symbolKind & 1952 && !symbol.exports)
                symbol.exports = {};
            if (symbolKind & 6240 && !symbol.members)
                symbol.members = {};
            node.symbol = symbol;
            if (symbolKind & 107455 && !symbol.valueDeclaration)
                symbol.valueDeclaration = node;
        }
        function getDeclarationName(node) {
            if (node.name) {
                if (node.kind === 206 && node.name.kind === 8) {
                    return '"' + node.name.text + '"';
                }
                if (node.name.kind === 128) {
                    var nameExpression = node.name.expression;
                    ts.Debug.assert(ts.isWellKnownSymbolSyntactically(nameExpression));
                    return ts.getPropertyNameForKnownSymbolName(nameExpression.name.text);
                }
                return node.name.text;
            }
            switch (node.kind) {
                case 144:
                case 136:
                    return "__constructor";
                case 143:
                case 139:
                    return "__call";
                case 140:
                    return "__new";
                case 141:
                    return "__index";
                case 216:
                    return "__export";
                case 215:
                    return node.isExportEquals ? "export=" : "default";
                case 201:
                case 202:
                    return node.flags & 256 ? "default" : undefined;
            }
        }
        function getDisplayName(node) {
            return node.name ? ts.declarationNameToString(node.name) : getDeclarationName(node);
        }
        function declareSymbol(symbols, parent, node, includes, excludes) {
            ts.Debug.assert(!ts.hasDynamicName(node));
            var name = node.flags & 256 && parent ? "default" : getDeclarationName(node);
            var symbol;
            if (name !== undefined) {
                symbol = ts.hasProperty(symbols, name) ? symbols[name] : (symbols[name] = createSymbol(0, name));
                if (symbol.flags & excludes) {
                    if (node.name) {
                        node.name.parent = node;
                    }
                    var message = symbol.flags & 2
                        ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0
                        : ts.Diagnostics.Duplicate_identifier_0;
                    ts.forEach(symbol.declarations, function (declaration) {
                        file.bindDiagnostics.push(ts.createDiagnosticForNode(declaration.name || declaration, message, getDisplayName(declaration)));
                    });
                    file.bindDiagnostics.push(ts.createDiagnosticForNode(node.name || node, message, getDisplayName(node)));
                    symbol = createSymbol(0, name);
                }
            }
            else {
                symbol = createSymbol(0, "__missing");
            }
            addDeclarationToSymbol(symbol, node, includes);
            symbol.parent = parent;
            if ((node.kind === 202 || node.kind === 175) && symbol.exports) {
                var prototypeSymbol = createSymbol(4 | 134217728, "prototype");
                if (ts.hasProperty(symbol.exports, prototypeSymbol.name)) {
                    if (node.name) {
                        node.name.parent = node;
                    }
                    file.bindDiagnostics.push(ts.createDiagnosticForNode(symbol.exports[prototypeSymbol.name].declarations[0], ts.Diagnostics.Duplicate_identifier_0, prototypeSymbol.name));
                }
                symbol.exports[prototypeSymbol.name] = prototypeSymbol;
                prototypeSymbol.parent = symbol;
            }
            return symbol;
        }
        function declareModuleMember(node, symbolKind, symbolExcludes) {
            var hasExportModifier = ts.getCombinedNodeFlags(node) & 1;
            if (symbolKind & 8388608) {
                if (node.kind === 218 || (node.kind === 209 && hasExportModifier)) {
                    declareSymbol(container.symbol.exports, container.symbol, node, symbolKind, symbolExcludes);
                }
                else {
                    declareSymbol(container.locals, undefined, node, symbolKind, symbolExcludes);
                }
            }
            else {
                if (hasExportModifier || container.flags & 65536) {
                    var exportKind = (symbolKind & 107455 ? 1048576 : 0) |
                        (symbolKind & 793056 ? 2097152 : 0) |
                        (symbolKind & 1536 ? 4194304 : 0);
                    var local = declareSymbol(container.locals, undefined, node, exportKind, symbolExcludes);
                    local.exportSymbol = declareSymbol(container.symbol.exports, container.symbol, node, symbolKind, symbolExcludes);
                    node.localSymbol = local;
                }
                else {
                    declareSymbol(container.locals, undefined, node, symbolKind, symbolExcludes);
                }
            }
        }
        function bindChildren(node, symbolKind, isBlockScopeContainer) {
            if (symbolKind & 255504) {
                node.locals = {};
            }
            var saveParent = parent;
            var saveContainer = container;
            var savedBlockScopeContainer = blockScopeContainer;
            parent = node;
            if (symbolKind & 262128) {
                container = node;
                addToContainerChain(container);
            }
            if (isBlockScopeContainer) {
                setBlockScopeContainer(node, (symbolKind & 255504) === 0 && node.kind !== 228);
            }
            ts.forEachChild(node, bind);
            container = saveContainer;
            parent = saveParent;
            blockScopeContainer = savedBlockScopeContainer;
        }
        function addToContainerChain(node) {
            if (lastContainer) {
                lastContainer.nextContainer = node;
            }
            lastContainer = node;
        }
        function bindDeclaration(node, symbolKind, symbolExcludes, isBlockScopeContainer) {
            switch (container.kind) {
                case 206:
                    declareModuleMember(node, symbolKind, symbolExcludes);
                    break;
                case 228:
                    if (ts.isExternalModule(container)) {
                        declareModuleMember(node, symbolKind, symbolExcludes);
                        break;
                    }
                case 143:
                case 144:
                case 139:
                case 140:
                case 141:
                case 135:
                case 134:
                case 136:
                case 137:
                case 138:
                case 201:
                case 163:
                case 164:
                    declareSymbol(container.locals, undefined, node, symbolKind, symbolExcludes);
                    break;
                case 175:
                case 202:
                    if (node.flags & 128) {
                        declareSymbol(container.symbol.exports, container.symbol, node, symbolKind, symbolExcludes);
                        break;
                    }
                case 146:
                case 155:
                case 203:
                    declareSymbol(container.symbol.members, container.symbol, node, symbolKind, symbolExcludes);
                    break;
                case 205:
                    declareSymbol(container.symbol.exports, container.symbol, node, symbolKind, symbolExcludes);
                    break;
            }
            bindChildren(node, symbolKind, isBlockScopeContainer);
        }
        function isAmbientContext(node) {
            while (node) {
                if (node.flags & 2)
                    return true;
                node = node.parent;
            }
            return false;
        }
        function hasExportDeclarations(node) {
            var body = node.kind === 228 ? node : node.body;
            if (body.kind === 228 || body.kind === 207) {
                for (var _i = 0, _a = body.statements; _i < _a.length; _i++) {
                    var stat = _a[_i];
                    if (stat.kind === 216 || stat.kind === 215) {
                        return true;
                    }
                }
            }
            return false;
        }
        function setExportContextFlag(node) {
            if (isAmbientContext(node) && !hasExportDeclarations(node)) {
                node.flags |= 65536;
            }
            else {
                node.flags &= ~65536;
            }
        }
        function bindModuleDeclaration(node) {
            setExportContextFlag(node);
            if (node.name.kind === 8) {
                bindDeclaration(node, 512, 106639, true);
            }
            else {
                var state = getModuleInstanceState(node);
                if (state === 0) {
                    bindDeclaration(node, 1024, 0, true);
                }
                else {
                    bindDeclaration(node, 512, 106639, true);
                    var currentModuleIsConstEnumOnly = state === 2;
                    if (node.symbol.constEnumOnlyModule === undefined) {
                        node.symbol.constEnumOnlyModule = currentModuleIsConstEnumOnly;
                    }
                    else {
                        node.symbol.constEnumOnlyModule = node.symbol.constEnumOnlyModule && currentModuleIsConstEnumOnly;
                    }
                }
            }
        }
        function bindFunctionOrConstructorType(node) {
            // For a given function symbol "<...>(...) => T" we want to generate a symbol identical
            // to the one we would get for: { <...>(...): T }
            //
            // We do that by making an anonymous type literal symbol, and then setting the function 
            // symbol as its sole member. To the rest of the system, this symbol will be  indistinguishable 
            // from an actual type literal symbol you would have gotten had you used the long form.
            var symbol = createSymbol(131072, getDeclarationName(node));
            addDeclarationToSymbol(symbol, node, 131072);
            bindChildren(node, 131072, false);
            var typeLiteralSymbol = createSymbol(2048, "__type");
            addDeclarationToSymbol(typeLiteralSymbol, node, 2048);
            typeLiteralSymbol.members = {};
            typeLiteralSymbol.members[node.kind === 143 ? "__call" : "__new"] = symbol;
        }
        function bindAnonymousDeclaration(node, symbolKind, name, isBlockScopeContainer) {
            var symbol = createSymbol(symbolKind, name);
            addDeclarationToSymbol(symbol, node, symbolKind);
            bindChildren(node, symbolKind, isBlockScopeContainer);
        }
        function bindCatchVariableDeclaration(node) {
            bindChildren(node, 0, true);
        }
        function bindBlockScopedDeclaration(node, symbolKind, symbolExcludes) {
            switch (blockScopeContainer.kind) {
                case 206:
                    declareModuleMember(node, symbolKind, symbolExcludes);
                    break;
                case 228:
                    if (ts.isExternalModule(container)) {
                        declareModuleMember(node, symbolKind, symbolExcludes);
                        break;
                    }
                default:
                    if (!blockScopeContainer.locals) {
                        blockScopeContainer.locals = {};
                        addToContainerChain(blockScopeContainer);
                    }
                    declareSymbol(blockScopeContainer.locals, undefined, node, symbolKind, symbolExcludes);
            }
            bindChildren(node, symbolKind, false);
        }
        function bindBlockScopedVariableDeclaration(node) {
            bindBlockScopedDeclaration(node, 2, 107455);
        }
        function getDestructuringParameterName(node) {
            return "__" + ts.indexOf(node.parent.parameters, node);
        }
        function bind(node) {
            node.parent = parent;
            switch (node.kind) {
                case 129:
                    bindDeclaration(node, 262144, 530912, false);
                    break;
                case 130:
                    bindParameter(node);
                    break;
                case 199:
                case 153:
                    if (ts.isBindingPattern(node.name)) {
                        bindChildren(node, 0, false);
                    }
                    else if (ts.isBlockOrCatchScoped(node)) {
                        bindBlockScopedVariableDeclaration(node);
                    }
                    else if (ts.isParameterDeclaration(node)) {
                        bindDeclaration(node, 1, 107455, false);
                    }
                    else {
                        bindDeclaration(node, 1, 107454, false);
                    }
                    break;
                case 133:
                case 132:
                    bindPropertyOrMethodOrAccessor(node, 4 | (node.questionToken ? 536870912 : 0), 107455, false);
                    break;
                case 225:
                case 226:
                    bindPropertyOrMethodOrAccessor(node, 4, 107455, false);
                    break;
                case 227:
                    bindPropertyOrMethodOrAccessor(node, 8, 107455, false);
                    break;
                case 139:
                case 140:
                case 141:
                    bindDeclaration(node, 131072, 0, false);
                    break;
                case 135:
                case 134:
                    bindPropertyOrMethodOrAccessor(node, 8192 | (node.questionToken ? 536870912 : 0), ts.isObjectLiteralMethod(node) ? 107455 : 99263, true);
                    break;
                case 201:
                    bindDeclaration(node, 16, 106927, true);
                    break;
                case 136:
                    bindDeclaration(node, 16384, 0, true);
                    break;
                case 137:
                    bindPropertyOrMethodOrAccessor(node, 32768, 41919, true);
                    break;
                case 138:
                    bindPropertyOrMethodOrAccessor(node, 65536, 74687, true);
                    break;
                case 143:
                case 144:
                    bindFunctionOrConstructorType(node);
                    break;
                case 146:
                    bindAnonymousDeclaration(node, 2048, "__type", false);
                    break;
                case 155:
                    bindAnonymousDeclaration(node, 4096, "__object", false);
                    break;
                case 163:
                case 164:
                    bindAnonymousDeclaration(node, 16, "__function", true);
                    break;
                case 175:
                    bindAnonymousDeclaration(node, 32, "__class", false);
                    break;
                case 224:
                    bindCatchVariableDeclaration(node);
                    break;
                case 202:
                    bindBlockScopedDeclaration(node, 32, 899583);
                    break;
                case 203:
                    bindDeclaration(node, 64, 792992, false);
                    break;
                case 204:
                    bindDeclaration(node, 524288, 793056, false);
                    break;
                case 205:
                    if (ts.isConst(node)) {
                        bindDeclaration(node, 128, 899967, false);
                    }
                    else {
                        bindDeclaration(node, 256, 899327, false);
                    }
                    break;
                case 206:
                    bindModuleDeclaration(node);
                    break;
                case 209:
                case 212:
                case 214:
                case 218:
                    bindDeclaration(node, 8388608, 8388608, false);
                    break;
                case 211:
                    if (node.name) {
                        bindDeclaration(node, 8388608, 8388608, false);
                    }
                    else {
                        bindChildren(node, 0, false);
                    }
                    break;
                case 216:
                    if (!node.exportClause) {
                        declareSymbol(container.symbol.exports, container.symbol, node, 1073741824, 0);
                    }
                    bindChildren(node, 0, false);
                    break;
                case 215:
                    if (node.expression.kind === 65) {
                        declareSymbol(container.symbol.exports, container.symbol, node, 8388608, 107455 | 8388608);
                    }
                    else {
                        declareSymbol(container.symbol.exports, container.symbol, node, 4, 107455 | 8388608);
                    }
                    bindChildren(node, 0, false);
                    break;
                case 228:
                    setExportContextFlag(node);
                    if (ts.isExternalModule(node)) {
                        bindAnonymousDeclaration(node, 512, '"' + ts.removeFileExtension(node.fileName) + '"', true);
                        break;
                    }
                case 180:
                    bindChildren(node, 0, !ts.isFunctionLike(node.parent));
                    break;
                case 224:
                case 187:
                case 188:
                case 189:
                case 208:
                    bindChildren(node, 0, true);
                    break;
                default:
                    var saveParent = parent;
                    parent = node;
                    ts.forEachChild(node, bind);
                    parent = saveParent;
            }
        }
        function bindParameter(node) {
            if (ts.isBindingPattern(node.name)) {
                bindAnonymousDeclaration(node, 1, getDestructuringParameterName(node), false);
            }
            else {
                bindDeclaration(node, 1, 107455, false);
            }
            if (node.flags & 112 &&
                node.parent.kind === 136 &&
                (node.parent.parent.kind === 202 || node.parent.parent.kind === 175)) {
                var classDeclaration = node.parent.parent;
                declareSymbol(classDeclaration.symbol.members, classDeclaration.symbol, node, 4, 107455);
            }
        }
        function bindPropertyOrMethodOrAccessor(node, symbolKind, symbolExcludes, isBlockScopeContainer) {
            if (ts.hasDynamicName(node)) {
                bindAnonymousDeclaration(node, symbolKind, "__computed", isBlockScopeContainer);
            }
            else {
                bindDeclaration(node, symbolKind, symbolExcludes, isBlockScopeContainer);
            }
        }
    }
})(ts || (ts = {}));
/// <reference path="binder.ts"/>
var ts;
(function (ts) {
    var nextSymbolId = 1;
    var nextNodeId = 1;
    var nextMergeId = 1;
    function getNodeId(node) {
        if (!node.id)
            node.id = nextNodeId++;
        return node.id;
    }
    ts.getNodeId = getNodeId;
    ts.checkTime = 0;
    function getSymbolId(symbol) {
        if (!symbol.id) {
            symbol.id = nextSymbolId++;
        }
        return symbol.id;
    }
    ts.getSymbolId = getSymbolId;
    function createTypeChecker(host, produceDiagnostics) {
        var Symbol = ts.objectAllocator.getSymbolConstructor();
        var Type = ts.objectAllocator.getTypeConstructor();
        var Signature = ts.objectAllocator.getSignatureConstructor();
        var typeCount = 0;
        var emptyArray = [];
        var emptySymbols = {};
        var compilerOptions = host.getCompilerOptions();
        var languageVersion = compilerOptions.target || 0;
        var emitResolver = createResolver();
        var undefinedSymbol = createSymbol(4 | 67108864, "undefined");
        var argumentsSymbol = createSymbol(4 | 67108864, "arguments");
        var checker = {
            getNodeCount: function () { return ts.sum(host.getSourceFiles(), "nodeCount"); },
            getIdentifierCount: function () { return ts.sum(host.getSourceFiles(), "identifierCount"); },
            getSymbolCount: function () { return ts.sum(host.getSourceFiles(), "symbolCount"); },
            getTypeCount: function () { return typeCount; },
            isUndefinedSymbol: function (symbol) { return symbol === undefinedSymbol; },
            isArgumentsSymbol: function (symbol) { return symbol === argumentsSymbol; },
            getDiagnostics: getDiagnostics,
            getGlobalDiagnostics: getGlobalDiagnostics,
            getTypeOfSymbolAtLocation: getTypeOfSymbolAtLocation,
            getDeclaredTypeOfSymbol: getDeclaredTypeOfSymbol,
            getPropertiesOfType: getPropertiesOfType,
            getPropertyOfType: getPropertyOfType,
            getSignaturesOfType: getSignaturesOfType,
            getIndexTypeOfType: getIndexTypeOfType,
            getReturnTypeOfSignature: getReturnTypeOfSignature,
            getSymbolsInScope: getSymbolsInScope,
            getSymbolAtLocation: getSymbolAtLocation,
            getShorthandAssignmentValueSymbol: getShorthandAssignmentValueSymbol,
            getTypeAtLocation: getTypeAtLocation,
            typeToString: typeToString,
            getSymbolDisplayBuilder: getSymbolDisplayBuilder,
            symbolToString: symbolToString,
            getAugmentedPropertiesOfType: getAugmentedPropertiesOfType,
            getRootSymbols: getRootSymbols,
            getContextualType: getContextualType,
            getFullyQualifiedName: getFullyQualifiedName,
            getResolvedSignature: getResolvedSignature,
            getConstantValue: getConstantValue,
            isValidPropertyAccess: isValidPropertyAccess,
            getSignatureFromDeclaration: getSignatureFromDeclaration,
            isImplementationOfOverload: isImplementationOfOverload,
            getAliasedSymbol: resolveAlias,
            getEmitResolver: getEmitResolver,
            getExportsOfModule: getExportsOfModuleAsArray
        };
        var unknownSymbol = createSymbol(4 | 67108864, "unknown");
        var resolvingSymbol = createSymbol(67108864, "__resolving__");
        var anyType = createIntrinsicType(1, "any");
        var stringType = createIntrinsicType(2, "string");
        var numberType = createIntrinsicType(4, "number");
        var booleanType = createIntrinsicType(8, "boolean");
        var esSymbolType = createIntrinsicType(1048576, "symbol");
        var voidType = createIntrinsicType(16, "void");
        var undefinedType = createIntrinsicType(32 | 262144, "undefined");
        var nullType = createIntrinsicType(64 | 262144, "null");
        var unknownType = createIntrinsicType(1, "unknown");
        var emptyObjectType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
        var anyFunctionType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
        var noConstraintType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
        var anySignature = createSignature(undefined, undefined, emptyArray, anyType, 0, false, false);
        var unknownSignature = createSignature(undefined, undefined, emptyArray, unknownType, 0, false, false);
        var globals = {};
        var globalArraySymbol;
        var globalESSymbolConstructorSymbol;
        var globalObjectType;
        var globalFunctionType;
        var globalArrayType;
        var globalStringType;
        var globalNumberType;
        var globalBooleanType;
        var globalRegExpType;
        var globalTemplateStringsArrayType;
        var globalESSymbolType;
        var globalIterableType;
        var anyArrayType;
        var getGlobalClassDecoratorType;
        var getGlobalParameterDecoratorType;
        var getGlobalPropertyDecoratorType;
        var getGlobalMethodDecoratorType;
        var tupleTypes = {};
        var unionTypes = {};
        var stringLiteralTypes = {};
        var emitExtends = false;
        var emitDecorate = false;
        var emitParam = false;
        var resolutionTargets = [];
        var resolutionResults = [];
        var mergedSymbols = [];
        var symbolLinks = [];
        var nodeLinks = [];
        var potentialThisCollisions = [];
        var diagnostics = ts.createDiagnosticCollection();
        var primitiveTypeInfo = {
            "string": {
                type: stringType,
                flags: 258
            },
            "number": {
                type: numberType,
                flags: 132
            },
            "boolean": {
                type: booleanType,
                flags: 8
            },
            "symbol": {
                type: esSymbolType,
                flags: 1048576
            }
        };
        function getEmitResolver(sourceFile) {
            getDiagnostics(sourceFile);
            return emitResolver;
        }
        function error(location, message, arg0, arg1, arg2) {
            var diagnostic = location
                ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2)
                : ts.createCompilerDiagnostic(message, arg0, arg1, arg2);
            diagnostics.add(diagnostic);
        }
        function createSymbol(flags, name) {
            return new Symbol(flags, name);
        }
        function getExcludedSymbolFlags(flags) {
            var result = 0;
            if (flags & 2)
                result |= 107455;
            if (flags & 1)
                result |= 107454;
            if (flags & 4)
                result |= 107455;
            if (flags & 8)
                result |= 107455;
            if (flags & 16)
                result |= 106927;
            if (flags & 32)
                result |= 899583;
            if (flags & 64)
                result |= 792992;
            if (flags & 256)
                result |= 899327;
            if (flags & 128)
                result |= 899967;
            if (flags & 512)
                result |= 106639;
            if (flags & 8192)
                result |= 99263;
            if (flags & 32768)
                result |= 41919;
            if (flags & 65536)
                result |= 74687;
            if (flags & 262144)
                result |= 530912;
            if (flags & 524288)
                result |= 793056;
            if (flags & 8388608)
                result |= 8388608;
            return result;
        }
        function recordMergedSymbol(target, source) {
            if (!source.mergeId)
                source.mergeId = nextMergeId++;
            mergedSymbols[source.mergeId] = target;
        }
        function cloneSymbol(symbol) {
            var result = createSymbol(symbol.flags | 33554432, symbol.name);
            result.declarations = symbol.declarations.slice(0);
            result.parent = symbol.parent;
            if (symbol.valueDeclaration)
                result.valueDeclaration = symbol.valueDeclaration;
            if (symbol.constEnumOnlyModule)
                result.constEnumOnlyModule = true;
            if (symbol.members)
                result.members = cloneSymbolTable(symbol.members);
            if (symbol.exports)
                result.exports = cloneSymbolTable(symbol.exports);
            recordMergedSymbol(result, symbol);
            return result;
        }
        function mergeSymbol(target, source) {
            if (!(target.flags & getExcludedSymbolFlags(source.flags))) {
                if (source.flags & 512 && target.flags & 512 && target.constEnumOnlyModule && !source.constEnumOnlyModule) {
                    target.constEnumOnlyModule = false;
                }
                target.flags |= source.flags;
                if (!target.valueDeclaration && source.valueDeclaration)
                    target.valueDeclaration = source.valueDeclaration;
                ts.forEach(source.declarations, function (node) {
                    target.declarations.push(node);
                });
                if (source.members) {
                    if (!target.members)
                        target.members = {};
                    mergeSymbolTable(target.members, source.members);
                }
                if (source.exports) {
                    if (!target.exports)
                        target.exports = {};
                    mergeSymbolTable(target.exports, source.exports);
                }
                recordMergedSymbol(target, source);
            }
            else {
                var message = target.flags & 2 || source.flags & 2
                    ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 : ts.Diagnostics.Duplicate_identifier_0;
                ts.forEach(source.declarations, function (node) {
                    error(node.name ? node.name : node, message, symbolToString(source));
                });
                ts.forEach(target.declarations, function (node) {
                    error(node.name ? node.name : node, message, symbolToString(source));
                });
            }
        }
        function cloneSymbolTable(symbolTable) {
            var result = {};
            for (var id in symbolTable) {
                if (ts.hasProperty(symbolTable, id)) {
                    result[id] = symbolTable[id];
                }
            }
            return result;
        }
        function mergeSymbolTable(target, source) {
            for (var id in source) {
                if (ts.hasProperty(source, id)) {
                    if (!ts.hasProperty(target, id)) {
                        target[id] = source[id];
                    }
                    else {
                        var symbol = target[id];
                        if (!(symbol.flags & 33554432)) {
                            target[id] = symbol = cloneSymbol(symbol);
                        }
                        mergeSymbol(symbol, source[id]);
                    }
                }
            }
        }
        function getSymbolLinks(symbol) {
            if (symbol.flags & 67108864)
                return symbol;
            var id = getSymbolId(symbol);
            return symbolLinks[id] || (symbolLinks[id] = {});
        }
        function getNodeLinks(node) {
            var nodeId = getNodeId(node);
            return nodeLinks[nodeId] || (nodeLinks[nodeId] = {});
        }
        function getSourceFile(node) {
            return ts.getAncestor(node, 228);
        }
        function isGlobalSourceFile(node) {
            return node.kind === 228 && !ts.isExternalModule(node);
        }
        function getSymbol(symbols, name, meaning) {
            if (meaning && ts.hasProperty(symbols, name)) {
                var symbol = symbols[name];
                ts.Debug.assert((symbol.flags & 16777216) === 0, "Should never get an instantiated symbol here.");
                if (symbol.flags & meaning) {
                    return symbol;
                }
                if (symbol.flags & 8388608) {
                    var target = resolveAlias(symbol);
                    if (target === unknownSymbol || target.flags & meaning) {
                        return symbol;
                    }
                }
            }
        }
        function isDefinedBefore(node1, node2) {
            var file1 = ts.getSourceFileOfNode(node1);
            var file2 = ts.getSourceFileOfNode(node2);
            if (file1 === file2) {
                return node1.pos <= node2.pos;
            }
            if (!compilerOptions.out) {
                return true;
            }
            var sourceFiles = host.getSourceFiles();
            return sourceFiles.indexOf(file1) <= sourceFiles.indexOf(file2);
        }
        function resolveName(location, name, meaning, nameNotFoundMessage, nameArg) {
            var result;
            var lastLocation;
            var propertyWithInvalidInitializer;
            var errorLocation = location;
            var grandparent;
            loop: while (location) {
                if (location.locals && !isGlobalSourceFile(location)) {
                    if (result = getSymbol(location.locals, name, meaning)) {
                        break loop;
                    }
                }
                switch (location.kind) {
                    case 228:
                        if (!ts.isExternalModule(location))
                            break;
                    case 206:
                        if (result = getSymbol(getSymbolOfNode(location).exports, name, meaning & 8914931)) {
                            if (result.flags & meaning || !(result.flags & 8388608 && getDeclarationOfAliasSymbol(result).kind === 218)) {
                                break loop;
                            }
                            result = undefined;
                        }
                        else if (location.kind === 228 ||
                            (location.kind === 206 && location.name.kind === 8)) {
                            result = getSymbolOfNode(location).exports["default"];
                            var localSymbol = ts.getLocalSymbolForExportDefault(result);
                            if (result && localSymbol && (result.flags & meaning) && localSymbol.name === name) {
                                break loop;
                            }
                            result = undefined;
                        }
                        break;
                    case 205:
                        if (result = getSymbol(getSymbolOfNode(location).exports, name, meaning & 8)) {
                            break loop;
                        }
                        break;
                    case 133:
                    case 132:
                        if (location.parent.kind === 202 && !(location.flags & 128)) {
                            var ctor = findConstructorDeclaration(location.parent);
                            if (ctor && ctor.locals) {
                                if (getSymbol(ctor.locals, name, meaning & 107455)) {
                                    propertyWithInvalidInitializer = location;
                                }
                            }
                        }
                        break;
                    case 202:
                    case 203:
                        if (result = getSymbol(getSymbolOfNode(location).members, name, meaning & 793056)) {
                            if (lastLocation && lastLocation.flags & 128) {
                                error(errorLocation, ts.Diagnostics.Static_members_cannot_reference_class_type_parameters);
                                return undefined;
                            }
                            break loop;
                        }
                        break;
                    case 128:
                        grandparent = location.parent.parent;
                        if (grandparent.kind === 202 || grandparent.kind === 203) {
                            if (result = getSymbol(getSymbolOfNode(grandparent).members, name, meaning & 793056)) {
                                error(errorLocation, ts.Diagnostics.A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type);
                                return undefined;
                            }
                        }
                        break;
                    case 135:
                    case 134:
                    case 136:
                    case 137:
                    case 138:
                    case 201:
                    case 164:
                        if (name === "arguments") {
                            result = argumentsSymbol;
                            break loop;
                        }
                        break;
                    case 163:
                        if (name === "arguments") {
                            result = argumentsSymbol;
                            break loop;
                        }
                        var functionName = location.name;
                        if (functionName && name === functionName.text) {
                            result = location.symbol;
                            break loop;
                        }
                        break;
                    case 175:
                        var className = location.name;
                        if (className && name === className.text) {
                            result = location.symbol;
                            break loop;
                        }
                        break;
                    case 131:
                        if (location.parent && location.parent.kind === 130) {
                            location = location.parent;
                        }
                        if (location.parent && ts.isClassElement(location.parent)) {
                            location = location.parent;
                        }
                        break;
                }
                lastLocation = location;
                location = location.parent;
            }
            if (!result) {
                result = getSymbol(globals, name, meaning);
            }
            if (!result) {
                if (nameNotFoundMessage) {
                    error(errorLocation, nameNotFoundMessage, typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg));
                }
                return undefined;
            }
            if (nameNotFoundMessage) {
                if (propertyWithInvalidInitializer) {
                    var propertyName = propertyWithInvalidInitializer.name;
                    error(errorLocation, ts.Diagnostics.Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor, ts.declarationNameToString(propertyName), typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg));
                    return undefined;
                }
                if (result.flags & 2) {
                    checkResolvedBlockScopedVariable(result, errorLocation);
                }
            }
            return result;
        }
        function checkResolvedBlockScopedVariable(result, errorLocation) {
            ts.Debug.assert((result.flags & 2) !== 0);
            var declaration = ts.forEach(result.declarations, function (d) { return ts.isBlockOrCatchScoped(d) ? d : undefined; });
            ts.Debug.assert(declaration !== undefined, "Block-scoped variable declaration is undefined");
            var isUsedBeforeDeclaration = !isDefinedBefore(declaration, errorLocation);
            if (!isUsedBeforeDeclaration) {
                var variableDeclaration = ts.getAncestor(declaration, 199);
                var container = ts.getEnclosingBlockScopeContainer(variableDeclaration);
                if (variableDeclaration.parent.parent.kind === 181 ||
                    variableDeclaration.parent.parent.kind === 187) {
                    isUsedBeforeDeclaration = isSameScopeDescendentOf(errorLocation, variableDeclaration, container);
                }
                else if (variableDeclaration.parent.parent.kind === 189 ||
                    variableDeclaration.parent.parent.kind === 188) {
                    var expression = variableDeclaration.parent.parent.expression;
                    isUsedBeforeDeclaration = isSameScopeDescendentOf(errorLocation, expression, container);
                }
            }
            if (isUsedBeforeDeclaration) {
                error(errorLocation, ts.Diagnostics.Block_scoped_variable_0_used_before_its_declaration, ts.declarationNameToString(declaration.name));
            }
        }
        function isSameScopeDescendentOf(initial, parent, stopAt) {
            if (!parent) {
                return false;
            }
            for (var current = initial; current && current !== stopAt && !ts.isFunctionLike(current); current = current.parent) {
                if (current === parent) {
                    return true;
                }
            }
            return false;
        }
        function getAnyImportSyntax(node) {
            if (ts.isAliasSymbolDeclaration(node)) {
                if (node.kind === 209) {
                    return node;
                }
                while (node && node.kind !== 210) {
                    node = node.parent;
                }
                return node;
            }
        }
        function getDeclarationOfAliasSymbol(symbol) {
            return ts.forEach(symbol.declarations, function (d) { return ts.isAliasSymbolDeclaration(d) ? d : undefined; });
        }
        function getTargetOfImportEqualsDeclaration(node) {
            if (node.moduleReference.kind === 220) {
                return resolveExternalModuleSymbol(resolveExternalModuleName(node, ts.getExternalModuleImportEqualsDeclarationExpression(node)));
            }
            return getSymbolOfPartOfRightHandSideOfImportEquals(node.moduleReference, node);
        }
        function getTargetOfImportClause(node) {
            var moduleSymbol = resolveExternalModuleName(node, node.parent.moduleSpecifier);
            if (moduleSymbol) {
                var exportDefaultSymbol = resolveSymbol(moduleSymbol.exports["default"]);
                if (!exportDefaultSymbol) {
                    error(node.name, ts.Diagnostics.Module_0_has_no_default_export, symbolToString(moduleSymbol));
                }
                return exportDefaultSymbol;
            }
        }
        function getTargetOfNamespaceImport(node) {
            var moduleSpecifier = node.parent.parent.moduleSpecifier;
            return resolveESModuleSymbol(resolveExternalModuleName(node, moduleSpecifier), moduleSpecifier);
        }
        function getMemberOfModuleVariable(moduleSymbol, name) {
            if (moduleSymbol.flags & 3) {
                var typeAnnotation = moduleSymbol.valueDeclaration.type;
                if (typeAnnotation) {
                    return getPropertyOfType(getTypeFromTypeNode(typeAnnotation), name);
                }
            }
        }
        function combineValueAndTypeSymbols(valueSymbol, typeSymbol) {
            if (valueSymbol.flags & (793056 | 1536)) {
                return valueSymbol;
            }
            var result = createSymbol(valueSymbol.flags | typeSymbol.flags, valueSymbol.name);
            result.declarations = ts.concatenate(valueSymbol.declarations, typeSymbol.declarations);
            result.parent = valueSymbol.parent || typeSymbol.parent;
            if (valueSymbol.valueDeclaration)
                result.valueDeclaration = valueSymbol.valueDeclaration;
            if (typeSymbol.members)
                result.members = typeSymbol.members;
            if (valueSymbol.exports)
                result.exports = valueSymbol.exports;
            return result;
        }
        function getExportOfModule(symbol, name) {
            if (symbol.flags & 1536) {
                var exports_1 = getExportsOfSymbol(symbol);
                if (ts.hasProperty(exports_1, name)) {
                    return resolveSymbol(exports_1[name]);
                }
            }
        }
        function getPropertyOfVariable(symbol, name) {
            if (symbol.flags & 3) {
                var typeAnnotation = symbol.valueDeclaration.type;
                if (typeAnnotation) {
                    return resolveSymbol(getPropertyOfType(getTypeFromTypeNode(typeAnnotation), name));
                }
            }
        }
        function getExternalModuleMember(node, specifier) {
            var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier);
            var targetSymbol = resolveESModuleSymbol(moduleSymbol, node.moduleSpecifier);
            if (targetSymbol) {
                var name_4 = specifier.propertyName || specifier.name;
                if (name_4.text) {
                    var symbolFromModule = getExportOfModule(targetSymbol, name_4.text);
                    var symbolFromVariable = getPropertyOfVariable(targetSymbol, name_4.text);
                    var symbol = symbolFromModule && symbolFromVariable ?
                        combineValueAndTypeSymbols(symbolFromVariable, symbolFromModule) :
                        symbolFromModule || symbolFromVariable;
                    if (!symbol) {
                        error(name_4, ts.Diagnostics.Module_0_has_no_exported_member_1, getFullyQualifiedName(moduleSymbol), ts.declarationNameToString(name_4));
                    }
                    return symbol;
                }
            }
        }
        function getTargetOfImportSpecifier(node) {
            return getExternalModuleMember(node.parent.parent.parent, node);
        }
        function getTargetOfExportSpecifier(node) {
            return node.parent.parent.moduleSpecifier ?
                getExternalModuleMember(node.parent.parent, node) :
                resolveEntityName(node.propertyName || node.name, 107455 | 793056 | 1536);
        }
        function getTargetOfExportAssignment(node) {
            return resolveEntityName(node.expression, 107455 | 793056 | 1536);
        }
        function getTargetOfAliasDeclaration(node) {
            switch (node.kind) {
                case 209:
                    return getTargetOfImportEqualsDeclaration(node);
                case 211:
                    return getTargetOfImportClause(node);
                case 212:
                    return getTargetOfNamespaceImport(node);
                case 214:
                    return getTargetOfImportSpecifier(node);
                case 218:
                    return getTargetOfExportSpecifier(node);
                case 215:
                    return getTargetOfExportAssignment(node);
            }
        }
        function resolveSymbol(symbol) {
            return symbol && symbol.flags & 8388608 && !(symbol.flags & (107455 | 793056 | 1536)) ? resolveAlias(symbol) : symbol;
        }
        function resolveAlias(symbol) {
            ts.Debug.assert((symbol.flags & 8388608) !== 0, "Should only get Alias here.");
            var links = getSymbolLinks(symbol);
            if (!links.target) {
                links.target = resolvingSymbol;
                var node = getDeclarationOfAliasSymbol(symbol);
                var target = getTargetOfAliasDeclaration(node);
                if (links.target === resolvingSymbol) {
                    links.target = target || unknownSymbol;
                }
                else {
                    error(node, ts.Diagnostics.Circular_definition_of_import_alias_0, symbolToString(symbol));
                }
            }
            else if (links.target === resolvingSymbol) {
                links.target = unknownSymbol;
            }
            return links.target;
        }
        function markExportAsReferenced(node) {
            var symbol = getSymbolOfNode(node);
            var target = resolveAlias(symbol);
            if (target) {
                var markAlias = (target === unknownSymbol && compilerOptions.separateCompilation) ||
                    (target !== unknownSymbol && (target.flags & 107455) && !isConstEnumOrConstEnumOnlyModule(target));
                if (markAlias) {
                    markAliasSymbolAsReferenced(symbol);
                }
            }
        }
        function markAliasSymbolAsReferenced(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.referenced) {
                links.referenced = true;
                var node = getDeclarationOfAliasSymbol(symbol);
                if (node.kind === 215) {
                    checkExpressionCached(node.expression);
                }
                else if (node.kind === 218) {
                    checkExpressionCached(node.propertyName || node.name);
                }
                else if (ts.isInternalModuleImportEqualsDeclaration(node)) {
                    checkExpressionCached(node.moduleReference);
                }
            }
        }
        function getSymbolOfPartOfRightHandSideOfImportEquals(entityName, importDeclaration) {
            if (!importDeclaration) {
                importDeclaration = ts.getAncestor(entityName, 209);
                ts.Debug.assert(importDeclaration !== undefined);
            }
            if (entityName.kind === 65 && ts.isRightSideOfQualifiedNameOrPropertyAccess(entityName)) {
                entityName = entityName.parent;
            }
            if (entityName.kind === 65 || entityName.parent.kind === 127) {
                return resolveEntityName(entityName, 1536);
            }
            else {
                ts.Debug.assert(entityName.parent.kind === 209);
                return resolveEntityName(entityName, 107455 | 793056 | 1536);
            }
        }
        function getFullyQualifiedName(symbol) {
            return symbol.parent ? getFullyQualifiedName(symbol.parent) + "." + symbolToString(symbol) : symbolToString(symbol);
        }
        function resolveEntityName(name, meaning) {
            if (ts.nodeIsMissing(name)) {
                return undefined;
            }
            var symbol;
            if (name.kind === 65) {
                var message = meaning === 1536 ? ts.Diagnostics.Cannot_find_namespace_0 : ts.Diagnostics.Cannot_find_name_0;
                symbol = resolveName(name, name.text, meaning, message, name);
                if (!symbol) {
                    return undefined;
                }
            }
            else if (name.kind === 127 || name.kind === 156) {
                var left = name.kind === 127 ? name.left : name.expression;
                var right = name.kind === 127 ? name.right : name.name;
                var namespace = resolveEntityName(left, 1536);
                if (!namespace || namespace === unknownSymbol || ts.nodeIsMissing(right)) {
                    return undefined;
                }
                symbol = getSymbol(getExportsOfSymbol(namespace), right.text, meaning);
                if (!symbol) {
                    error(right, ts.Diagnostics.Module_0_has_no_exported_member_1, getFullyQualifiedName(namespace), ts.declarationNameToString(right));
                    return undefined;
                }
            }
            else {
                ts.Debug.fail("Unknown entity name kind.");
            }
            ts.Debug.assert((symbol.flags & 16777216) === 0, "Should never get an instantiated symbol here.");
            return symbol.flags & meaning ? symbol : resolveAlias(symbol);
        }
        function isExternalModuleNameRelative(moduleName) {
            return moduleName.substr(0, 2) === "./" || moduleName.substr(0, 3) === "../" || moduleName.substr(0, 2) === ".\\" || moduleName.substr(0, 3) === "..\\";
        }
        function resolveExternalModuleName(location, moduleReferenceExpression) {
            if (moduleReferenceExpression.kind !== 8) {
                return;
            }
            var moduleReferenceLiteral = moduleReferenceExpression;
            var searchPath = ts.getDirectoryPath(getSourceFile(location).fileName);
            var moduleName = ts.escapeIdentifier(moduleReferenceLiteral.text);
            if (!moduleName)
                return;
            var isRelative = isExternalModuleNameRelative(moduleName);
            if (!isRelative) {
                var symbol = getSymbol(globals, '"' + moduleName + '"', 512);
                if (symbol) {
                    return symbol;
                }
            }
            var fileName;
            var sourceFile;
            while (true) {
                fileName = ts.normalizePath(ts.combinePaths(searchPath, moduleName));
                sourceFile = ts.forEach(ts.supportedExtensions, function (extension) { return host.getSourceFile(fileName + extension); });
                if (sourceFile || isRelative) {
                    break;
                }
                var parentPath = ts.getDirectoryPath(searchPath);
                if (parentPath === searchPath) {
                    break;
                }
                searchPath = parentPath;
            }
            if (sourceFile) {
                if (sourceFile.symbol) {
                    return sourceFile.symbol;
                }
                error(moduleReferenceLiteral, ts.Diagnostics.File_0_is_not_a_module, sourceFile.fileName);
                return;
            }
            error(moduleReferenceLiteral, ts.Diagnostics.Cannot_find_module_0, moduleName);
        }
        function resolveExternalModuleSymbol(moduleSymbol) {
            return moduleSymbol && resolveSymbol(moduleSymbol.exports["export="]) || moduleSymbol;
        }
        function resolveESModuleSymbol(moduleSymbol, moduleReferenceExpression) {
            var symbol = resolveExternalModuleSymbol(moduleSymbol);
            if (symbol && !(symbol.flags & (1536 | 3))) {
                error(moduleReferenceExpression, ts.Diagnostics.Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct, symbolToString(moduleSymbol));
                symbol = undefined;
            }
            return symbol;
        }
        function getExportAssignmentSymbol(moduleSymbol) {
            return moduleSymbol.exports["export="];
        }
        function getExportsOfModuleAsArray(moduleSymbol) {
            return symbolsToArray(getExportsOfModule(moduleSymbol));
        }
        function getExportsOfSymbol(symbol) {
            return symbol.flags & 1536 ? getExportsOfModule(symbol) : symbol.exports || emptySymbols;
        }
        function getExportsOfModule(moduleSymbol) {
            var links = getSymbolLinks(moduleSymbol);
            return links.resolvedExports || (links.resolvedExports = getExportsForModule(moduleSymbol));
        }
        function extendExportSymbols(target, source) {
            for (var id in source) {
                if (id !== "default" && !ts.hasProperty(target, id)) {
                    target[id] = source[id];
                }
            }
        }
        function getExportsForModule(moduleSymbol) {
            var result;
            var visitedSymbols = [];
            visit(moduleSymbol);
            return result || moduleSymbol.exports;
            function visit(symbol) {
                if (symbol && symbol.flags & 1952 && !ts.contains(visitedSymbols, symbol)) {
                    visitedSymbols.push(symbol);
                    if (symbol !== moduleSymbol) {
                        if (!result) {
                            result = cloneSymbolTable(moduleSymbol.exports);
                        }
                        extendExportSymbols(result, symbol.exports);
                    }
                    var exportStars = symbol.exports["__export"];
                    if (exportStars) {
                        for (var _i = 0, _a = exportStars.declarations; _i < _a.length; _i++) {
                            var node = _a[_i];
                            visit(resolveExternalModuleName(node, node.moduleSpecifier));
                        }
                    }
                }
            }
        }
        function getMergedSymbol(symbol) {
            var merged;
            return symbol && symbol.mergeId && (merged = mergedSymbols[symbol.mergeId]) ? merged : symbol;
        }
        function getSymbolOfNode(node) {
            return getMergedSymbol(node.symbol);
        }
        function getParentOfSymbol(symbol) {
            return getMergedSymbol(symbol.parent);
        }
        function getExportSymbolOfValueSymbolIfExported(symbol) {
            return symbol && (symbol.flags & 1048576) !== 0
                ? getMergedSymbol(symbol.exportSymbol)
                : symbol;
        }
        function symbolIsValue(symbol) {
            if (symbol.flags & 16777216) {
                return symbolIsValue(getSymbolLinks(symbol).target);
            }
            if (symbol.flags & 107455) {
                return true;
            }
            if (symbol.flags & 8388608) {
                return (resolveAlias(symbol).flags & 107455) !== 0;
            }
            return false;
        }
        function findConstructorDeclaration(node) {
            var members = node.members;
            for (var _i = 0; _i < members.length; _i++) {
                var member = members[_i];
                if (member.kind === 136 && ts.nodeIsPresent(member.body)) {
                    return member;
                }
            }
        }
        function createType(flags) {
            var result = new Type(checker, flags);
            result.id = typeCount++;
            return result;
        }
        function createIntrinsicType(kind, intrinsicName) {
            var type = createType(kind);
            type.intrinsicName = intrinsicName;
            return type;
        }
        function createObjectType(kind, symbol) {
            var type = createType(kind);
            type.symbol = symbol;
            return type;
        }
        function isReservedMemberName(name) {
            return name.charCodeAt(0) === 95 &&
                name.charCodeAt(1) === 95 &&
                name.charCodeAt(2) !== 95 &&
                name.charCodeAt(2) !== 64;
        }
        function getNamedMembers(members) {
            var result;
            for (var id in members) {
                if (ts.hasProperty(members, id)) {
                    if (!isReservedMemberName(id)) {
                        if (!result)
                            result = [];
                        var symbol = members[id];
                        if (symbolIsValue(symbol)) {
                            result.push(symbol);
                        }
                    }
                }
            }
            return result || emptyArray;
        }
        function setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType) {
            type.members = members;
            type.properties = getNamedMembers(members);
            type.callSignatures = callSignatures;
            type.constructSignatures = constructSignatures;
            if (stringIndexType)
                type.stringIndexType = stringIndexType;
            if (numberIndexType)
                type.numberIndexType = numberIndexType;
            return type;
        }
        function createAnonymousType(symbol, members, callSignatures, constructSignatures, stringIndexType, numberIndexType) {
            return setObjectTypeMembers(createObjectType(32768, symbol), members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        }
        function forEachSymbolTableInScope(enclosingDeclaration, callback) {
            var result;
            for (var location_1 = enclosingDeclaration; location_1; location_1 = location_1.parent) {
                if (location_1.locals && !isGlobalSourceFile(location_1)) {
                    if (result = callback(location_1.locals)) {
                        return result;
                    }
                }
                switch (location_1.kind) {
                    case 228:
                        if (!ts.isExternalModule(location_1)) {
                            break;
                        }
                    case 206:
                        if (result = callback(getSymbolOfNode(location_1).exports)) {
                            return result;
                        }
                        break;
                    case 202:
                    case 203:
                        if (result = callback(getSymbolOfNode(location_1).members)) {
                            return result;
                        }
                        break;
                }
            }
            return callback(globals);
        }
        function getQualifiedLeftMeaning(rightMeaning) {
            return rightMeaning === 107455 ? 107455 : 1536;
        }
        function getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, useOnlyExternalAliasing) {
            function getAccessibleSymbolChainFromSymbolTable(symbols) {
                function canQualifySymbol(symbolFromSymbolTable, meaning) {
                    if (!needsQualification(symbolFromSymbolTable, enclosingDeclaration, meaning)) {
                        return true;
                    }
                    var accessibleParent = getAccessibleSymbolChain(symbolFromSymbolTable.parent, enclosingDeclaration, getQualifiedLeftMeaning(meaning), useOnlyExternalAliasing);
                    return !!accessibleParent;
                }
                function isAccessible(symbolFromSymbolTable, resolvedAliasSymbol) {
                    if (symbol === (resolvedAliasSymbol || symbolFromSymbolTable)) {
                        return !ts.forEach(symbolFromSymbolTable.declarations, hasExternalModuleSymbol) &&
                            canQualifySymbol(symbolFromSymbolTable, meaning);
                    }
                }
                if (isAccessible(ts.lookUp(symbols, symbol.name))) {
                    return [symbol];
                }
                return ts.forEachValue(symbols, function (symbolFromSymbolTable) {
                    if (symbolFromSymbolTable.flags & 8388608 && symbolFromSymbolTable.name !== "export=") {
                        if (!useOnlyExternalAliasing ||
                            ts.forEach(symbolFromSymbolTable.declarations, ts.isExternalModuleImportEqualsDeclaration)) {
                            var resolvedImportedSymbol = resolveAlias(symbolFromSymbolTable);
                            if (isAccessible(symbolFromSymbolTable, resolveAlias(symbolFromSymbolTable))) {
                                return [symbolFromSymbolTable];
                            }
                            var accessibleSymbolsFromExports = resolvedImportedSymbol.exports ? getAccessibleSymbolChainFromSymbolTable(resolvedImportedSymbol.exports) : undefined;
                            if (accessibleSymbolsFromExports && canQualifySymbol(symbolFromSymbolTable, getQualifiedLeftMeaning(meaning))) {
                                return [symbolFromSymbolTable].concat(accessibleSymbolsFromExports);
                            }
                        }
                    }
                });
            }
            if (symbol) {
                return forEachSymbolTableInScope(enclosingDeclaration, getAccessibleSymbolChainFromSymbolTable);
            }
        }
        function needsQualification(symbol, enclosingDeclaration, meaning) {
            var qualify = false;
            forEachSymbolTableInScope(enclosingDeclaration, function (symbolTable) {
                if (!ts.hasProperty(symbolTable, symbol.name)) {
                    return false;
                }
                var symbolFromSymbolTable = symbolTable[symbol.name];
                if (symbolFromSymbolTable === symbol) {
                    return true;
                }
                symbolFromSymbolTable = (symbolFromSymbolTable.flags & 8388608) ? resolveAlias(symbolFromSymbolTable) : symbolFromSymbolTable;
                if (symbolFromSymbolTable.flags & meaning) {
                    qualify = true;
                    return true;
                }
                return false;
            });
            return qualify;
        }
        function isSymbolAccessible(symbol, enclosingDeclaration, meaning) {
            if (symbol && enclosingDeclaration && !(symbol.flags & 262144)) {
                var initialSymbol = symbol;
                var meaningToLook = meaning;
                while (symbol) {
                    var accessibleSymbolChain = getAccessibleSymbolChain(symbol, enclosingDeclaration, meaningToLook, false);
                    if (accessibleSymbolChain) {
                        var hasAccessibleDeclarations = hasVisibleDeclarations(accessibleSymbolChain[0]);
                        if (!hasAccessibleDeclarations) {
                            return {
                                accessibility: 1,
                                errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning),
                                errorModuleName: symbol !== initialSymbol ? symbolToString(symbol, enclosingDeclaration, 1536) : undefined
                            };
                        }
                        return hasAccessibleDeclarations;
                    }
                    meaningToLook = getQualifiedLeftMeaning(meaning);
                    symbol = getParentOfSymbol(symbol);
                }
                var symbolExternalModule = ts.forEach(initialSymbol.declarations, getExternalModuleContainer);
                if (symbolExternalModule) {
                    var enclosingExternalModule = getExternalModuleContainer(enclosingDeclaration);
                    if (symbolExternalModule !== enclosingExternalModule) {
                        return {
                            accessibility: 2,
                            errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning),
                            errorModuleName: symbolToString(symbolExternalModule)
                        };
                    }
                }
                return {
                    accessibility: 1,
                    errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning)
                };
            }
            return { accessibility: 0 };
            function getExternalModuleContainer(declaration) {
                for (; declaration; declaration = declaration.parent) {
                    if (hasExternalModuleSymbol(declaration)) {
                        return getSymbolOfNode(declaration);
                    }
                }
            }
        }
        function hasExternalModuleSymbol(declaration) {
            return (declaration.kind === 206 && declaration.name.kind === 8) ||
                (declaration.kind === 228 && ts.isExternalModule(declaration));
        }
        function hasVisibleDeclarations(symbol) {
            var aliasesToMakeVisible;
            if (ts.forEach(symbol.declarations, function (declaration) { return !getIsDeclarationVisible(declaration); })) {
                return undefined;
            }
            return { accessibility: 0, aliasesToMakeVisible: aliasesToMakeVisible };
            function getIsDeclarationVisible(declaration) {
                if (!isDeclarationVisible(declaration)) {
                    var anyImportSyntax = getAnyImportSyntax(declaration);
                    if (anyImportSyntax &&
                        !(anyImportSyntax.flags & 1) &&
                        isDeclarationVisible(anyImportSyntax.parent)) {
                        getNodeLinks(declaration).isVisible = true;
                        if (aliasesToMakeVisible) {
                            if (!ts.contains(aliasesToMakeVisible, anyImportSyntax)) {
                                aliasesToMakeVisible.push(anyImportSyntax);
                            }
                        }
                        else {
                            aliasesToMakeVisible = [anyImportSyntax];
                        }
                        return true;
                    }
                    return false;
                }
                return true;
            }
        }
        function isEntityNameVisible(entityName, enclosingDeclaration) {
            var meaning;
            if (entityName.parent.kind === 145) {
                meaning = 107455 | 1048576;
            }
            else if (entityName.kind === 127 || entityName.kind === 156 ||
                entityName.parent.kind === 209) {
                meaning = 1536;
            }
            else {
                meaning = 793056;
            }
            var firstIdentifier = getFirstIdentifier(entityName);
            var symbol = resolveName(enclosingDeclaration, firstIdentifier.text, meaning, undefined, undefined);
            return (symbol && hasVisibleDeclarations(symbol)) || {
                accessibility: 1,
                errorSymbolName: ts.getTextOfNode(firstIdentifier),
                errorNode: firstIdentifier
            };
        }
        function writeKeyword(writer, kind) {
            writer.writeKeyword(ts.tokenToString(kind));
        }
        function writePunctuation(writer, kind) {
            writer.writePunctuation(ts.tokenToString(kind));
        }
        function writeSpace(writer) {
            writer.writeSpace(" ");
        }
        function symbolToString(symbol, enclosingDeclaration, meaning) {
            var writer = ts.getSingleLineStringWriter();
            getSymbolDisplayBuilder().buildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning);
            var result = writer.string();
            ts.releaseStringWriter(writer);
            return result;
        }
        function typeToString(type, enclosingDeclaration, flags) {
            var writer = ts.getSingleLineStringWriter();
            getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
            var result = writer.string();
            ts.releaseStringWriter(writer);
            var maxLength = compilerOptions.noErrorTruncation || flags & 4 ? undefined : 100;
            if (maxLength && result.length >= maxLength) {
                result = result.substr(0, maxLength - "...".length) + "...";
            }
            return result;
        }
        function getTypeAliasForTypeLiteral(type) {
            if (type.symbol && type.symbol.flags & 2048) {
                var node = type.symbol.declarations[0].parent;
                while (node.kind === 150) {
                    node = node.parent;
                }
                if (node.kind === 204) {
                    return getSymbolOfNode(node);
                }
            }
            return undefined;
        }
        var _displayBuilder;
        function getSymbolDisplayBuilder() {
            function appendSymbolNameOnly(symbol, writer) {
                if (symbol.declarations && symbol.declarations.length > 0) {
                    var declaration = symbol.declarations[0];
                    if (declaration.name) {
                        writer.writeSymbol(ts.declarationNameToString(declaration.name), symbol);
                        return;
                    }
                }
                writer.writeSymbol(symbol.name, symbol);
            }
            function buildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning, flags, typeFlags) {
                var parentSymbol;
                function appendParentTypeArgumentsAndSymbolName(symbol) {
                    if (parentSymbol) {
                        if (flags & 1) {
                            if (symbol.flags & 16777216) {
                                buildDisplayForTypeArgumentsAndDelimiters(getTypeParametersOfClassOrInterface(parentSymbol), symbol.mapper, writer, enclosingDeclaration);
                            }
                            else {
                                buildTypeParameterDisplayFromSymbol(parentSymbol, writer, enclosingDeclaration);
                            }
                        }
                        writePunctuation(writer, 20);
                    }
                    parentSymbol = symbol;
                    appendSymbolNameOnly(symbol, writer);
                }
                writer.trackSymbol(symbol, enclosingDeclaration, meaning);
                function walkSymbol(symbol, meaning) {
                    if (symbol) {
                        var accessibleSymbolChain = getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, !!(flags & 2));
                        if (!accessibleSymbolChain ||
                            needsQualification(accessibleSymbolChain[0], enclosingDeclaration, accessibleSymbolChain.length === 1 ? meaning : getQualifiedLeftMeaning(meaning))) {
                            walkSymbol(getParentOfSymbol(accessibleSymbolChain ? accessibleSymbolChain[0] : symbol), getQualifiedLeftMeaning(meaning));
                        }
                        if (accessibleSymbolChain) {
                            for (var _i = 0; _i < accessibleSymbolChain.length; _i++) {
                                var accessibleSymbol = accessibleSymbolChain[_i];
                                appendParentTypeArgumentsAndSymbolName(accessibleSymbol);
                            }
                        }
                        else {
                            if (!parentSymbol && ts.forEach(symbol.declarations, hasExternalModuleSymbol)) {
                                return;
                            }
                            if (symbol.flags & 2048 || symbol.flags & 4096) {
                                return;
                            }
                            appendParentTypeArgumentsAndSymbolName(symbol);
                        }
                    }
                }
                var isTypeParameter = symbol.flags & 262144;
                var typeFormatFlag = 128 & typeFlags;
                if (!isTypeParameter && (enclosingDeclaration || typeFormatFlag)) {
                    walkSymbol(symbol, meaning);
                    return;
                }
                return appendParentTypeArgumentsAndSymbolName(symbol);
            }
            function buildTypeDisplay(type, writer, enclosingDeclaration, globalFlags, typeStack) {
                var globalFlagsToPass = globalFlags & 16;
                return writeType(type, globalFlags);
                function writeType(type, flags) {
                    if (type.flags & 1048703) {
                        writer.writeKeyword(!(globalFlags & 16) &&
                            (type.flags & 1) ? "any" : type.intrinsicName);
                    }
                    else if (type.flags & 4096) {
                        writeTypeReference(type, flags);
                    }
                    else if (type.flags & (1024 | 2048 | 128 | 512)) {
                        buildSymbolDisplay(type.symbol, writer, enclosingDeclaration, 793056, 0, flags);
                    }
                    else if (type.flags & 8192) {
                        writeTupleType(type);
                    }
                    else if (type.flags & 16384) {
                        writeUnionType(type, flags);
                    }
                    else if (type.flags & 32768) {
                        writeAnonymousType(type, flags);
                    }
                    else if (type.flags & 256) {
                        writer.writeStringLiteral(type.text);
                    }
                    else {
                        writePunctuation(writer, 14);
                        writeSpace(writer);
                        writePunctuation(writer, 21);
                        writeSpace(writer);
                        writePunctuation(writer, 15);
                    }
                }
                function writeTypeList(types, union) {
                    for (var i = 0; i < types.length; i++) {
                        if (i > 0) {
                            if (union) {
                                writeSpace(writer);
                            }
                            writePunctuation(writer, union ? 44 : 23);
                            writeSpace(writer);
                        }
                        writeType(types[i], union ? 64 : 0);
                    }
                }
                function writeTypeReference(type, flags) {
                    if (type.target === globalArrayType && !(flags & 1)) {
                        writeType(type.typeArguments[0], 64);
                        writePunctuation(writer, 18);
                        writePunctuation(writer, 19);
                    }
                    else {
                        buildSymbolDisplay(type.target.symbol, writer, enclosingDeclaration, 793056);
                        writePunctuation(writer, 24);
                        writeTypeList(type.typeArguments, false);
                        writePunctuation(writer, 25);
                    }
                }
                function writeTupleType(type) {
                    writePunctuation(writer, 18);
                    writeTypeList(type.elementTypes, false);
                    writePunctuation(writer, 19);
                }
                function writeUnionType(type, flags) {
                    if (flags & 64) {
                        writePunctuation(writer, 16);
                    }
                    writeTypeList(type.types, true);
                    if (flags & 64) {
                        writePunctuation(writer, 17);
                    }
                }
                function writeAnonymousType(type, flags) {
                    if (type.symbol && type.symbol.flags & (32 | 384 | 512)) {
                        writeTypeofSymbol(type, flags);
                    }
                    else if (shouldWriteTypeOfFunctionSymbol()) {
                        writeTypeofSymbol(type, flags);
                    }
                    else if (typeStack && ts.contains(typeStack, type)) {
                        var typeAlias = getTypeAliasForTypeLiteral(type);
                        if (typeAlias) {
                            buildSymbolDisplay(typeAlias, writer, enclosingDeclaration, 793056, 0, flags);
                        }
                        else {
                            writeKeyword(writer, 112);
                        }
                    }
                    else {
                        if (!typeStack) {
                            typeStack = [];
                        }
                        typeStack.push(type);
                        writeLiteralType(type, flags);
                        typeStack.pop();
                    }
                    function shouldWriteTypeOfFunctionSymbol() {
                        if (type.symbol) {
                            var isStaticMethodSymbol = !!(type.symbol.flags & 8192 &&
                                ts.forEach(type.symbol.declarations, function (declaration) { return declaration.flags & 128; }));
                            var isNonLocalFunctionSymbol = !!(type.symbol.flags & 16) &&
                                (type.symbol.parent ||
                                    ts.forEach(type.symbol.declarations, function (declaration) {
                                        return declaration.parent.kind === 228 || declaration.parent.kind === 207;
                                    }));
                            if (isStaticMethodSymbol || isNonLocalFunctionSymbol) {
                                return !!(flags & 2) ||
                                    (typeStack && ts.contains(typeStack, type));
                            }
                        }
                    }
                }
                function writeTypeofSymbol(type, typeFormatFlags) {
                    writeKeyword(writer, 97);
                    writeSpace(writer);
                    buildSymbolDisplay(type.symbol, writer, enclosingDeclaration, 107455, 0, typeFormatFlags);
                }
                function getIndexerParameterName(type, indexKind, fallbackName) {
                    var declaration = getIndexDeclarationOfSymbol(type.symbol, indexKind);
                    if (!declaration) {
                        return fallbackName;
                    }
                    ts.Debug.assert(declaration.parameters.length !== 0);
                    return ts.declarationNameToString(declaration.parameters[0].name);
                }
                function writeLiteralType(type, flags) {
                    var resolved = resolveObjectOrUnionTypeMembers(type);
                    if (!resolved.properties.length && !resolved.stringIndexType && !resolved.numberIndexType) {
                        if (!resolved.callSignatures.length && !resolved.constructSignatures.length) {
                            writePunctuation(writer, 14);
                            writePunctuation(writer, 15);
                            return;
                        }
                        if (resolved.callSignatures.length === 1 && !resolved.constructSignatures.length) {
                            if (flags & 64) {
                                writePunctuation(writer, 16);
                            }
                            buildSignatureDisplay(resolved.callSignatures[0], writer, enclosingDeclaration, globalFlagsToPass | 8, typeStack);
                            if (flags & 64) {
                                writePunctuation(writer, 17);
                            }
                            return;
                        }
                        if (resolved.constructSignatures.length === 1 && !resolved.callSignatures.length) {
                            if (flags & 64) {
                                writePunctuation(writer, 16);
                            }
                            writeKeyword(writer, 88);
                            writeSpace(writer);
                            buildSignatureDisplay(resolved.constructSignatures[0], writer, enclosingDeclaration, globalFlagsToPass | 8, typeStack);
                            if (flags & 64) {
                                writePunctuation(writer, 17);
                            }
                            return;
                        }
                    }
                    writePunctuation(writer, 14);
                    writer.writeLine();
                    writer.increaseIndent();
                    for (var _i = 0, _a = resolved.callSignatures; _i < _a.length; _i++) {
                        var signature = _a[_i];
                        buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, typeStack);
                        writePunctuation(writer, 22);
                        writer.writeLine();
                    }
                    for (var _b = 0, _c = resolved.constructSignatures; _b < _c.length; _b++) {
                        var signature = _c[_b];
                        writeKeyword(writer, 88);
                        writeSpace(writer);
                        buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, typeStack);
                        writePunctuation(writer, 22);
                        writer.writeLine();
                    }
                    if (resolved.stringIndexType) {
                        writePunctuation(writer, 18);
                        writer.writeParameter(getIndexerParameterName(resolved, 0, "x"));
                        writePunctuation(writer, 51);
                        writeSpace(writer);
                        writeKeyword(writer, 122);
                        writePunctuation(writer, 19);
                        writePunctuation(writer, 51);
                        writeSpace(writer);
                        writeType(resolved.stringIndexType, 0);
                        writePunctuation(writer, 22);
                        writer.writeLine();
                    }
                    if (resolved.numberIndexType) {
                        writePunctuation(writer, 18);
                        writer.writeParameter(getIndexerParameterName(resolved, 1, "x"));
                        writePunctuation(writer, 51);
                        writeSpace(writer);
                        writeKeyword(writer, 120);
                        writePunctuation(writer, 19);
                        writePunctuation(writer, 51);
                        writeSpace(writer);
                        writeType(resolved.numberIndexType, 0);
                        writePunctuation(writer, 22);
                        writer.writeLine();
                    }
                    for (var _d = 0, _e = resolved.properties; _d < _e.length; _d++) {
                        var p = _e[_d];
                        var t = getTypeOfSymbol(p);
                        if (p.flags & (16 | 8192) && !getPropertiesOfObjectType(t).length) {
                            var signatures = getSignaturesOfType(t, 0);
                            for (var _f = 0; _f < signatures.length; _f++) {
                                var signature = signatures[_f];
                                buildSymbolDisplay(p, writer);
                                if (p.flags & 536870912) {
                                    writePunctuation(writer, 50);
                                }
                                buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, typeStack);
                                writePunctuation(writer, 22);
                                writer.writeLine();
                            }
                        }
                        else {
                            buildSymbolDisplay(p, writer);
                            if (p.flags & 536870912) {
                                writePunctuation(writer, 50);
                            }
                            writePunctuation(writer, 51);
                            writeSpace(writer);
                            writeType(t, 0);
                            writePunctuation(writer, 22);
                            writer.writeLine();
                        }
                    }
                    writer.decreaseIndent();
                    writePunctuation(writer, 15);
                }
            }
            function buildTypeParameterDisplayFromSymbol(symbol, writer, enclosingDeclaraiton, flags) {
                var targetSymbol = getTargetSymbol(symbol);
                if (targetSymbol.flags & 32 || targetSymbol.flags & 64) {
                    buildDisplayForTypeParametersAndDelimiters(getTypeParametersOfClassOrInterface(symbol), writer, enclosingDeclaraiton, flags);
                }
            }
            function buildTypeParameterDisplay(tp, writer, enclosingDeclaration, flags, typeStack) {
                appendSymbolNameOnly(tp.symbol, writer);
                var constraint = getConstraintOfTypeParameter(tp);
                if (constraint) {
                    writeSpace(writer);
                    writeKeyword(writer, 79);
                    writeSpace(writer);
                    buildTypeDisplay(constraint, writer, enclosingDeclaration, flags, typeStack);
                }
            }
            function buildParameterDisplay(p, writer, enclosingDeclaration, flags, typeStack) {
                if (ts.hasDotDotDotToken(p.valueDeclaration)) {
                    writePunctuation(writer, 21);
                }
                appendSymbolNameOnly(p, writer);
                if (ts.hasQuestionToken(p.valueDeclaration) || p.valueDeclaration.initializer) {
                    writePunctuation(writer, 50);
                }
                writePunctuation(writer, 51);
                writeSpace(writer);
                buildTypeDisplay(getTypeOfSymbol(p), writer, enclosingDeclaration, flags, typeStack);
            }
            function buildDisplayForTypeParametersAndDelimiters(typeParameters, writer, enclosingDeclaration, flags, typeStack) {
                if (typeParameters && typeParameters.length) {
                    writePunctuation(writer, 24);
                    for (var i = 0; i < typeParameters.length; i++) {
                        if (i > 0) {
                            writePunctuation(writer, 23);
                            writeSpace(writer);
                        }
                        buildTypeParameterDisplay(typeParameters[i], writer, enclosingDeclaration, flags, typeStack);
                    }
                    writePunctuation(writer, 25);
                }
            }
            function buildDisplayForTypeArgumentsAndDelimiters(typeParameters, mapper, writer, enclosingDeclaration, flags, typeStack) {
                if (typeParameters && typeParameters.length) {
                    writePunctuation(writer, 24);
                    for (var i = 0; i < typeParameters.length; i++) {
                        if (i > 0) {
                            writePunctuation(writer, 23);
                            writeSpace(writer);
                        }
                        buildTypeDisplay(mapper(typeParameters[i]), writer, enclosingDeclaration, 0);
                    }
                    writePunctuation(writer, 25);
                }
            }
            function buildDisplayForParametersAndDelimiters(parameters, writer, enclosingDeclaration, flags, typeStack) {
                writePunctuation(writer, 16);
                for (var i = 0; i < parameters.length; i++) {
                    if (i > 0) {
                        writePunctuation(writer, 23);
                        writeSpace(writer);
                    }
                    buildParameterDisplay(parameters[i], writer, enclosingDeclaration, flags, typeStack);
                }
                writePunctuation(writer, 17);
            }
            function buildReturnTypeDisplay(signature, writer, enclosingDeclaration, flags, typeStack) {
                if (flags & 8) {
                    writeSpace(writer);
                    writePunctuation(writer, 32);
                }
                else {
                    writePunctuation(writer, 51);
                }
                writeSpace(writer);
                buildTypeDisplay(getReturnTypeOfSignature(signature), writer, enclosingDeclaration, flags, typeStack);
            }
            function buildSignatureDisplay(signature, writer, enclosingDeclaration, flags, typeStack) {
                if (signature.target && (flags & 32)) {
                    buildDisplayForTypeArgumentsAndDelimiters(signature.target.typeParameters, signature.mapper, writer, enclosingDeclaration);
                }
                else {
                    buildDisplayForTypeParametersAndDelimiters(signature.typeParameters, writer, enclosingDeclaration, flags, typeStack);
                }
                buildDisplayForParametersAndDelimiters(signature.parameters, writer, enclosingDeclaration, flags, typeStack);
                buildReturnTypeDisplay(signature, writer, enclosingDeclaration, flags, typeStack);
            }
            return _displayBuilder || (_displayBuilder = {
                symbolToString: symbolToString,
                typeToString: typeToString,
                buildSymbolDisplay: buildSymbolDisplay,
                buildTypeDisplay: buildTypeDisplay,
                buildTypeParameterDisplay: buildTypeParameterDisplay,
                buildParameterDisplay: buildParameterDisplay,
                buildDisplayForParametersAndDelimiters: buildDisplayForParametersAndDelimiters,
                buildDisplayForTypeParametersAndDelimiters: buildDisplayForTypeParametersAndDelimiters,
                buildDisplayForTypeArgumentsAndDelimiters: buildDisplayForTypeArgumentsAndDelimiters,
                buildTypeParameterDisplayFromSymbol: buildTypeParameterDisplayFromSymbol,
                buildSignatureDisplay: buildSignatureDisplay,
                buildReturnTypeDisplay: buildReturnTypeDisplay
            });
        }
        function isDeclarationVisible(node) {
            function getContainingExternalModule(node) {
                for (; node; node = node.parent) {
                    if (node.kind === 206) {
                        if (node.name.kind === 8) {
                            return node;
                        }
                    }
                    else if (node.kind === 228) {
                        return ts.isExternalModule(node) ? node : undefined;
                    }
                }
                ts.Debug.fail("getContainingModule cant reach here");
            }
            function isUsedInExportAssignment(node) {
                var externalModule = getContainingExternalModule(node);
                var exportAssignmentSymbol;
                var resolvedExportSymbol;
                if (externalModule) {
                    var externalModuleSymbol = getSymbolOfNode(externalModule);
                    exportAssignmentSymbol = getExportAssignmentSymbol(externalModuleSymbol);
                    var symbolOfNode = getSymbolOfNode(node);
                    if (isSymbolUsedInExportAssignment(symbolOfNode)) {
                        return true;
                    }
                    if (symbolOfNode.flags & 8388608) {
                        return isSymbolUsedInExportAssignment(resolveAlias(symbolOfNode));
                    }
                }
                function isSymbolUsedInExportAssignment(symbol) {
                    if (exportAssignmentSymbol === symbol) {
                        return true;
                    }
                    if (exportAssignmentSymbol && !!(exportAssignmentSymbol.flags & 8388608)) {
                        resolvedExportSymbol = resolvedExportSymbol || resolveAlias(exportAssignmentSymbol);
                        if (resolvedExportSymbol === symbol) {
                            return true;
                        }
                        return ts.forEach(resolvedExportSymbol.declarations, function (current) {
                            while (current) {
                                if (current === node) {
                                    return true;
                                }
                                current = current.parent;
                            }
                        });
                    }
                }
            }
            function determineIfDeclarationIsVisible() {
                switch (node.kind) {
                    case 153:
                        return isDeclarationVisible(node.parent.parent);
                    case 199:
                        if (ts.isBindingPattern(node.name) &&
                            !node.name.elements.length) {
                            return false;
                        }
                    case 206:
                    case 202:
                    case 203:
                    case 204:
                    case 201:
                    case 205:
                    case 209:
                        var parent_2 = getDeclarationContainer(node);
                        if (!(ts.getCombinedNodeFlags(node) & 1) &&
                            !(node.kind !== 209 && parent_2.kind !== 228 && ts.isInAmbientContext(parent_2))) {
                            return isGlobalSourceFile(parent_2);
                        }
                        return isDeclarationVisible(parent_2);
                    case 133:
                    case 132:
                    case 137:
                    case 138:
                    case 135:
                    case 134:
                        if (node.flags & (32 | 64)) {
                            return false;
                        }
                    case 136:
                    case 140:
                    case 139:
                    case 141:
                    case 130:
                    case 207:
                    case 143:
                    case 144:
                    case 146:
                    case 142:
                    case 147:
                    case 148:
                    case 149:
                    case 150:
                        return isDeclarationVisible(node.parent);
                    case 211:
                    case 212:
                    case 214:
                        return false;
                    case 129:
                    case 228:
                        return true;
                    case 215:
                        return false;
                    default:
                        ts.Debug.fail("isDeclarationVisible unknown: SyntaxKind: " + node.kind);
                }
            }
            if (node) {
                var links = getNodeLinks(node);
                if (links.isVisible === undefined) {
                    links.isVisible = !!determineIfDeclarationIsVisible();
                }
                return links.isVisible;
            }
        }
        function collectLinkedAliases(node) {
            var exportSymbol;
            if (node.parent && node.parent.kind === 215) {
                exportSymbol = resolveName(node.parent, node.text, 107455 | 793056 | 1536, ts.Diagnostics.Cannot_find_name_0, node);
            }
            else if (node.parent.kind === 218) {
                exportSymbol = getTargetOfExportSpecifier(node.parent);
            }
            var result = [];
            if (exportSymbol) {
                buildVisibleNodeList(exportSymbol.declarations);
            }
            return result;
            function buildVisibleNodeList(declarations) {
                ts.forEach(declarations, function (declaration) {
                    getNodeLinks(declaration).isVisible = true;
                    var resultNode = getAnyImportSyntax(declaration) || declaration;
                    if (!ts.contains(result, resultNode)) {
                        result.push(resultNode);
                    }
                    if (ts.isInternalModuleImportEqualsDeclaration(declaration)) {
                        var internalModuleReference = declaration.moduleReference;
                        var firstIdentifier = getFirstIdentifier(internalModuleReference);
                        var importSymbol = resolveName(declaration, firstIdentifier.text, 107455 | 793056 | 1536, ts.Diagnostics.Cannot_find_name_0, firstIdentifier);
                        buildVisibleNodeList(importSymbol.declarations);
                    }
                });
            }
        }
        function pushTypeResolution(target) {
            var i = 0;
            var count = resolutionTargets.length;
            while (i < count && resolutionTargets[i] !== target) {
                i++;
            }
            if (i < count) {
                do {
                    resolutionResults[i++] = false;
                } while (i < count);
                return false;
            }
            resolutionTargets.push(target);
            resolutionResults.push(true);
            return true;
        }
        function popTypeResolution() {
            resolutionTargets.pop();
            return resolutionResults.pop();
        }
        function getDeclarationContainer(node) {
            node = ts.getRootDeclaration(node);
            return node.kind === 199 ? node.parent.parent.parent : node.parent;
        }
        function getTypeOfPrototypeProperty(prototype) {
            var classType = getDeclaredTypeOfSymbol(prototype.parent);
            return classType.typeParameters ? createTypeReference(classType, ts.map(classType.typeParameters, function (_) { return anyType; })) : classType;
        }
        function getTypeOfPropertyOfType(type, name) {
            var prop = getPropertyOfType(type, name);
            return prop ? getTypeOfSymbol(prop) : undefined;
        }
        function getTypeForBindingElement(declaration) {
            var pattern = declaration.parent;
            var parentType = getTypeForVariableLikeDeclaration(pattern.parent);
            if (parentType === unknownType) {
                return unknownType;
            }
            if (!parentType || parentType === anyType) {
                if (declaration.initializer) {
                    return checkExpressionCached(declaration.initializer);
                }
                return parentType;
            }
            var type;
            if (pattern.kind === 151) {
                var name_5 = declaration.propertyName || declaration.name;
                type = getTypeOfPropertyOfType(parentType, name_5.text) ||
                    isNumericLiteralName(name_5.text) && getIndexTypeOfType(parentType, 1) ||
                    getIndexTypeOfType(parentType, 0);
                if (!type) {
                    error(name_5, ts.Diagnostics.Type_0_has_no_property_1_and_no_string_index_signature, typeToString(parentType), ts.declarationNameToString(name_5));
                    return unknownType;
                }
            }
            else {
                var elementType = checkIteratedTypeOrElementType(parentType, pattern, false);
                if (!declaration.dotDotDotToken) {
                    if (elementType.flags & 1) {
                        return elementType;
                    }
                    var propName = "" + ts.indexOf(pattern.elements, declaration);
                    type = isTupleLikeType(parentType)
                        ? getTypeOfPropertyOfType(parentType, propName)
                        : elementType;
                    if (!type) {
                        if (isTupleType(parentType)) {
                            error(declaration, ts.Diagnostics.Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2, typeToString(parentType), parentType.elementTypes.length, pattern.elements.length);
                        }
                        else {
                            error(declaration, ts.Diagnostics.Type_0_has_no_property_1, typeToString(parentType), propName);
                        }
                        return unknownType;
                    }
                }
                else {
                    type = createArrayType(elementType);
                }
            }
            return type;
        }
        function getTypeForVariableLikeDeclaration(declaration) {
            if (declaration.parent.parent.kind === 188) {
                return anyType;
            }
            if (declaration.parent.parent.kind === 189) {
                return checkRightHandSideOfForOf(declaration.parent.parent.expression) || anyType;
            }
            if (ts.isBindingPattern(declaration.parent)) {
                return getTypeForBindingElement(declaration);
            }
            if (declaration.type) {
                return getTypeFromTypeNode(declaration.type);
            }
            if (declaration.kind === 130) {
                var func = declaration.parent;
                if (func.kind === 138 && !ts.hasDynamicName(func)) {
                    var getter = ts.getDeclarationOfKind(declaration.parent.symbol, 137);
                    if (getter) {
                        return getReturnTypeOfSignature(getSignatureFromDeclaration(getter));
                    }
                }
                var type = getContextuallyTypedParameterType(declaration);
                if (type) {
                    return type;
                }
            }
            if (declaration.initializer) {
                return checkExpressionCached(declaration.initializer);
            }
            if (declaration.kind === 226) {
                return checkIdentifier(declaration.name);
            }
            return undefined;
        }
        function getTypeFromBindingElement(element) {
            if (element.initializer) {
                return getWidenedType(checkExpressionCached(element.initializer));
            }
            if (ts.isBindingPattern(element.name)) {
                return getTypeFromBindingPattern(element.name);
            }
            return anyType;
        }
        function getTypeFromObjectBindingPattern(pattern) {
            var members = {};
            ts.forEach(pattern.elements, function (e) {
                var flags = 4 | 67108864 | (e.initializer ? 536870912 : 0);
                var name = e.propertyName || e.name;
                var symbol = createSymbol(flags, name.text);
                symbol.type = getTypeFromBindingElement(e);
                members[symbol.name] = symbol;
            });
            return createAnonymousType(undefined, members, emptyArray, emptyArray, undefined, undefined);
        }
        function getTypeFromArrayBindingPattern(pattern) {
            var hasSpreadElement = false;
            var elementTypes = [];
            ts.forEach(pattern.elements, function (e) {
                elementTypes.push(e.kind === 176 || e.dotDotDotToken ? anyType : getTypeFromBindingElement(e));
                if (e.dotDotDotToken) {
                    hasSpreadElement = true;
                }
            });
            if (!elementTypes.length) {
                return languageVersion >= 2 ? createIterableType(anyType) : anyArrayType;
            }
            else if (hasSpreadElement) {
                var unionOfElements = getUnionType(elementTypes);
                return languageVersion >= 2 ? createIterableType(unionOfElements) : createArrayType(unionOfElements);
            }
            return createTupleType(elementTypes);
        }
        function getTypeFromBindingPattern(pattern) {
            return pattern.kind === 151
                ? getTypeFromObjectBindingPattern(pattern)
                : getTypeFromArrayBindingPattern(pattern);
        }
        function getWidenedTypeForVariableLikeDeclaration(declaration, reportErrors) {
            var type = getTypeForVariableLikeDeclaration(declaration);
            if (type) {
                if (reportErrors) {
                    reportErrorsFromWidening(declaration, type);
                }
                return declaration.kind !== 225 ? getWidenedType(type) : type;
            }
            if (ts.isBindingPattern(declaration.name)) {
                return getTypeFromBindingPattern(declaration.name);
            }
            type = declaration.dotDotDotToken ? anyArrayType : anyType;
            if (reportErrors && compilerOptions.noImplicitAny) {
                var root = ts.getRootDeclaration(declaration);
                if (!isPrivateWithinAmbient(root) && !(root.kind === 130 && isPrivateWithinAmbient(root.parent))) {
                    reportImplicitAnyError(declaration, type);
                }
            }
            return type;
        }
        function getTypeOfVariableOrParameterOrProperty(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                if (symbol.flags & 134217728) {
                    return links.type = getTypeOfPrototypeProperty(symbol);
                }
                var declaration = symbol.valueDeclaration;
                if (declaration.parent.kind === 224) {
                    return links.type = anyType;
                }
                if (declaration.kind === 215) {
                    return links.type = checkExpression(declaration.expression);
                }
                if (!pushTypeResolution(symbol)) {
                    return unknownType;
                }
                var type = getWidenedTypeForVariableLikeDeclaration(declaration, true);
                if (!popTypeResolution()) {
                    if (symbol.valueDeclaration.type) {
                        type = unknownType;
                        error(symbol.valueDeclaration, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_its_own_type_annotation, symbolToString(symbol));
                    }
                    else {
                        type = anyType;
                        if (compilerOptions.noImplicitAny) {
                            error(symbol.valueDeclaration, ts.Diagnostics._0_implicitly_has_type_any_because_it_is_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer, symbolToString(symbol));
                        }
                    }
                }
                links.type = type;
            }
            return links.type;
        }
        function getSetAccessorTypeAnnotationNode(accessor) {
            return accessor && accessor.parameters.length > 0 && accessor.parameters[0].type;
        }
        function getAnnotatedAccessorType(accessor) {
            if (accessor) {
                if (accessor.kind === 137) {
                    return accessor.type && getTypeFromTypeNode(accessor.type);
                }
                else {
                    var setterTypeAnnotation = getSetAccessorTypeAnnotationNode(accessor);
                    return setterTypeAnnotation && getTypeFromTypeNode(setterTypeAnnotation);
                }
            }
            return undefined;
        }
        function getTypeOfAccessors(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                if (!pushTypeResolution(symbol)) {
                    return unknownType;
                }
                var getter = ts.getDeclarationOfKind(symbol, 137);
                var setter = ts.getDeclarationOfKind(symbol, 138);
                var type;
                var getterReturnType = getAnnotatedAccessorType(getter);
                if (getterReturnType) {
                    type = getterReturnType;
                }
                else {
                    var setterParameterType = getAnnotatedAccessorType(setter);
                    if (setterParameterType) {
                        type = setterParameterType;
                    }
                    else {
                        if (getter && getter.body) {
                            type = getReturnTypeFromBody(getter);
                        }
                        else {
                            if (compilerOptions.noImplicitAny) {
                                error(setter, ts.Diagnostics.Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_type_annotation, symbolToString(symbol));
                            }
                            type = anyType;
                        }
                    }
                }
                if (!popTypeResolution()) {
                    type = anyType;
                    if (compilerOptions.noImplicitAny) {
                        var getter_1 = ts.getDeclarationOfKind(symbol, 137);
                        error(getter_1, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, symbolToString(symbol));
                    }
                }
                links.type = type;
            }
            return links.type;
        }
        function getTypeOfFuncClassEnumModule(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                links.type = createObjectType(32768, symbol);
            }
            return links.type;
        }
        function getTypeOfEnumMember(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                links.type = getDeclaredTypeOfEnum(getParentOfSymbol(symbol));
            }
            return links.type;
        }
        function getTypeOfAlias(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                var targetSymbol = resolveAlias(symbol);
                links.type = targetSymbol.flags & 107455
                    ? getTypeOfSymbol(targetSymbol)
                    : unknownType;
            }
            return links.type;
        }
        function getTypeOfInstantiatedSymbol(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.type) {
                links.type = instantiateType(getTypeOfSymbol(links.target), links.mapper);
            }
            return links.type;
        }
        function getTypeOfSymbol(symbol) {
            if (symbol.flags & 16777216) {
                return getTypeOfInstantiatedSymbol(symbol);
            }
            if (symbol.flags & (3 | 4)) {
                return getTypeOfVariableOrParameterOrProperty(symbol);
            }
            if (symbol.flags & (16 | 8192 | 32 | 384 | 512)) {
                return getTypeOfFuncClassEnumModule(symbol);
            }
            if (symbol.flags & 8) {
                return getTypeOfEnumMember(symbol);
            }
            if (symbol.flags & 98304) {
                return getTypeOfAccessors(symbol);
            }
            if (symbol.flags & 8388608) {
                return getTypeOfAlias(symbol);
            }
            return unknownType;
        }
        function getTargetType(type) {
            return type.flags & 4096 ? type.target : type;
        }
        function hasBaseType(type, checkBase) {
            return check(type);
            function check(type) {
                var target = getTargetType(type);
                return target === checkBase || ts.forEach(getBaseTypes(target), check);
            }
        }
        function getTypeParametersOfClassOrInterface(symbol) {
            var result;
            ts.forEach(symbol.declarations, function (node) {
                if (node.kind === 203 || node.kind === 202) {
                    var declaration = node;
                    if (declaration.typeParameters && declaration.typeParameters.length) {
                        ts.forEach(declaration.typeParameters, function (node) {
                            var tp = getDeclaredTypeOfTypeParameter(getSymbolOfNode(node));
                            if (!result) {
                                result = [tp];
                            }
                            else if (!ts.contains(result, tp)) {
                                result.push(tp);
                            }
                        });
                    }
                }
            });
            return result;
        }
        function getBaseTypes(type) {
            var typeWithBaseTypes = type;
            if (!typeWithBaseTypes.baseTypes) {
                if (type.symbol.flags & 32) {
                    resolveBaseTypesOfClass(typeWithBaseTypes);
                }
                else if (type.symbol.flags & 64) {
                    resolveBaseTypesOfInterface(typeWithBaseTypes);
                }
                else {
                    ts.Debug.fail("type must be class or interface");
                }
            }
            return typeWithBaseTypes.baseTypes;
        }
        function resolveBaseTypesOfClass(type) {
            type.baseTypes = [];
            var declaration = ts.getDeclarationOfKind(type.symbol, 202);
            var baseTypeNode = ts.getClassExtendsHeritageClauseElement(declaration);
            if (baseTypeNode) {
                var baseType = getTypeFromTypeNode(baseTypeNode);
                if (baseType !== unknownType) {
                    if (getTargetType(baseType).flags & 1024) {
                        if (type !== baseType && !hasBaseType(baseType, type)) {
                            type.baseTypes.push(baseType);
                        }
                        else {
                            error(declaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, undefined, 1));
                        }
                    }
                    else {
                        error(baseTypeNode, ts.Diagnostics.A_class_may_only_extend_another_class);
                    }
                }
            }
        }
        function resolveBaseTypesOfInterface(type) {
            type.baseTypes = [];
            for (var _i = 0, _a = type.symbol.declarations; _i < _a.length; _i++) {
                var declaration = _a[_i];
                if (declaration.kind === 203 && ts.getInterfaceBaseTypeNodes(declaration)) {
                    for (var _b = 0, _c = ts.getInterfaceBaseTypeNodes(declaration); _b < _c.length; _b++) {
                        var node = _c[_b];
                        var baseType = getTypeFromTypeNode(node);
                        if (baseType !== unknownType) {
                            if (getTargetType(baseType).flags & (1024 | 2048)) {
                                if (type !== baseType && !hasBaseType(baseType, type)) {
                                    type.baseTypes.push(baseType);
                                }
                                else {
                                    error(declaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, undefined, 1));
                                }
                            }
                            else {
                                error(node, ts.Diagnostics.An_interface_may_only_extend_a_class_or_another_interface);
                            }
                        }
                    }
                }
            }
        }
        function getDeclaredTypeOfClassOrInterface(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.declaredType) {
                var kind = symbol.flags & 32 ? 1024 : 2048;
                var type = links.declaredType = createObjectType(kind, symbol);
                var typeParameters = getTypeParametersOfClassOrInterface(symbol);
                if (typeParameters) {
                    type.flags |= 4096;
                    type.typeParameters = typeParameters;
                    type.instantiations = {};
                    type.instantiations[getTypeListId(type.typeParameters)] = type;
                    type.target = type;
                    type.typeArguments = type.typeParameters;
                }
            }
            return links.declaredType;
        }
        function getDeclaredTypeOfTypeAlias(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.declaredType) {
                if (!pushTypeResolution(links)) {
                    return unknownType;
                }
                var declaration = ts.getDeclarationOfKind(symbol, 204);
                var type = getTypeFromTypeNode(declaration.type);
                if (!popTypeResolution()) {
                    type = unknownType;
                    error(declaration.name, ts.Diagnostics.Type_alias_0_circularly_references_itself, symbolToString(symbol));
                }
                links.declaredType = type;
            }
            return links.declaredType;
        }
        function getDeclaredTypeOfEnum(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.declaredType) {
                var type = createType(128);
                type.symbol = symbol;
                links.declaredType = type;
            }
            return links.declaredType;
        }
        function getDeclaredTypeOfTypeParameter(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.declaredType) {
                var type = createType(512);
                type.symbol = symbol;
                if (!ts.getDeclarationOfKind(symbol, 129).constraint) {
                    type.constraint = noConstraintType;
                }
                links.declaredType = type;
            }
            return links.declaredType;
        }
        function getDeclaredTypeOfAlias(symbol) {
            var links = getSymbolLinks(symbol);
            if (!links.declaredType) {
                links.declaredType = getDeclaredTypeOfSymbol(resolveAlias(symbol));
            }
            return links.declaredType;
        }
        function getDeclaredTypeOfSymbol(symbol) {
            ts.Debug.assert((symbol.flags & 16777216) === 0);
            if (symbol.flags & (32 | 64)) {
                return getDeclaredTypeOfClassOrInterface(symbol);
            }
            if (symbol.flags & 524288) {
                return getDeclaredTypeOfTypeAlias(symbol);
            }
            if (symbol.flags & 384) {
                return getDeclaredTypeOfEnum(symbol);
            }
            if (symbol.flags & 262144) {
                return getDeclaredTypeOfTypeParameter(symbol);
            }
            if (symbol.flags & 8388608) {
                return getDeclaredTypeOfAlias(symbol);
            }
            return unknownType;
        }
        function createSymbolTable(symbols) {
            var result = {};
            for (var _i = 0; _i < symbols.length; _i++) {
                var symbol = symbols[_i];
                result[symbol.name] = symbol;
            }
            return result;
        }
        function createInstantiatedSymbolTable(symbols, mapper) {
            var result = {};
            for (var _i = 0; _i < symbols.length; _i++) {
                var symbol = symbols[_i];
                result[symbol.name] = instantiateSymbol(symbol, mapper);
            }
            return result;
        }
        function addInheritedMembers(symbols, baseSymbols) {
            for (var _i = 0; _i < baseSymbols.length; _i++) {
                var s = baseSymbols[_i];
                if (!ts.hasProperty(symbols, s.name)) {
                    symbols[s.name] = s;
                }
            }
        }
        function addInheritedSignatures(signatures, baseSignatures) {
            if (baseSignatures) {
                for (var _i = 0; _i < baseSignatures.length; _i++) {
                    var signature = baseSignatures[_i];
                    signatures.push(signature);
                }
            }
        }
        function resolveDeclaredMembers(type) {
            if (!type.declaredProperties) {
                var symbol = type.symbol;
                type.declaredProperties = getNamedMembers(symbol.members);
                type.declaredCallSignatures = getSignaturesOfSymbol(symbol.members["__call"]);
                type.declaredConstructSignatures = getSignaturesOfSymbol(symbol.members["__new"]);
                type.declaredStringIndexType = getIndexTypeOfSymbol(symbol, 0);
                type.declaredNumberIndexType = getIndexTypeOfSymbol(symbol, 1);
            }
            return type;
        }
        function resolveClassOrInterfaceMembers(type) {
            var target = resolveDeclaredMembers(type);
            var members = target.symbol.members;
            var callSignatures = target.declaredCallSignatures;
            var constructSignatures = target.declaredConstructSignatures;
            var stringIndexType = target.declaredStringIndexType;
            var numberIndexType = target.declaredNumberIndexType;
            var baseTypes = getBaseTypes(target);
            if (baseTypes.length) {
                members = createSymbolTable(target.declaredProperties);
                for (var _i = 0; _i < baseTypes.length; _i++) {
                    var baseType = baseTypes[_i];
                    addInheritedMembers(members, getPropertiesOfObjectType(baseType));
                    callSignatures = ts.concatenate(callSignatures, getSignaturesOfType(baseType, 0));
                    constructSignatures = ts.concatenate(constructSignatures, getSignaturesOfType(baseType, 1));
                    stringIndexType = stringIndexType || getIndexTypeOfType(baseType, 0);
                    numberIndexType = numberIndexType || getIndexTypeOfType(baseType, 1);
                }
            }
            setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        }
        function resolveTypeReferenceMembers(type) {
            var target = resolveDeclaredMembers(type.target);
            var mapper = createTypeMapper(target.typeParameters, type.typeArguments);
            var members = createInstantiatedSymbolTable(target.declaredProperties, mapper);
            var callSignatures = instantiateList(target.declaredCallSignatures, mapper, instantiateSignature);
            var constructSignatures = instantiateList(target.declaredConstructSignatures, mapper, instantiateSignature);
            var stringIndexType = target.declaredStringIndexType ? instantiateType(target.declaredStringIndexType, mapper) : undefined;
            var numberIndexType = target.declaredNumberIndexType ? instantiateType(target.declaredNumberIndexType, mapper) : undefined;
            ts.forEach(getBaseTypes(target), function (baseType) {
                var instantiatedBaseType = instantiateType(baseType, mapper);
                addInheritedMembers(members, getPropertiesOfObjectType(instantiatedBaseType));
                callSignatures = ts.concatenate(callSignatures, getSignaturesOfType(instantiatedBaseType, 0));
                constructSignatures = ts.concatenate(constructSignatures, getSignaturesOfType(instantiatedBaseType, 1));
                stringIndexType = stringIndexType || getIndexTypeOfType(instantiatedBaseType, 0);
                numberIndexType = numberIndexType || getIndexTypeOfType(instantiatedBaseType, 1);
            });
            setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        }
        function createSignature(declaration, typeParameters, parameters, resolvedReturnType, minArgumentCount, hasRestParameter, hasStringLiterals) {
            var sig = new Signature(checker);
            sig.declaration = declaration;
            sig.typeParameters = typeParameters;
            sig.parameters = parameters;
            sig.resolvedReturnType = resolvedReturnType;
            sig.minArgumentCount = minArgumentCount;
            sig.hasRestParameter = hasRestParameter;
            sig.hasStringLiterals = hasStringLiterals;
            return sig;
        }
        function cloneSignature(sig) {
            return createSignature(sig.declaration, sig.typeParameters, sig.parameters, sig.resolvedReturnType, sig.minArgumentCount, sig.hasRestParameter, sig.hasStringLiterals);
        }
        function getDefaultConstructSignatures(classType) {
            var baseTypes = getBaseTypes(classType);
            if (baseTypes.length) {
                var baseType = baseTypes[0];
                var baseSignatures = getSignaturesOfType(getTypeOfSymbol(baseType.symbol), 1);
                return ts.map(baseSignatures, function (baseSignature) {
                    var signature = baseType.flags & 4096 ?
                        getSignatureInstantiation(baseSignature, baseType.typeArguments) : cloneSignature(baseSignature);
                    signature.typeParameters = classType.typeParameters;
                    signature.resolvedReturnType = classType;
                    return signature;
                });
            }
            return [createSignature(undefined, classType.typeParameters, emptyArray, classType, 0, false, false)];
        }
        function createTupleTypeMemberSymbols(memberTypes) {
            var members = {};
            for (var i = 0; i < memberTypes.length; i++) {
                var symbol = createSymbol(4 | 67108864, "" + i);
                symbol.type = memberTypes[i];
                members[i] = symbol;
            }
            return members;
        }
        function resolveTupleTypeMembers(type) {
            var arrayType = resolveObjectOrUnionTypeMembers(createArrayType(getUnionType(type.elementTypes)));
            var members = createTupleTypeMemberSymbols(type.elementTypes);
            addInheritedMembers(members, arrayType.properties);
            setObjectTypeMembers(type, members, arrayType.callSignatures, arrayType.constructSignatures, arrayType.stringIndexType, arrayType.numberIndexType);
        }
        function signatureListsIdentical(s, t) {
            if (s.length !== t.length) {
                return false;
            }
            for (var i = 0; i < s.length; i++) {
                if (!compareSignatures(s[i], t[i], false, compareTypes)) {
                    return false;
                }
            }
            return true;
        }
        function getUnionSignatures(types, kind) {
            var signatureLists = ts.map(types, function (t) { return getSignaturesOfType(t, kind); });
            var signatures = signatureLists[0];
            for (var _i = 0; _i < signatures.length; _i++) {
                var signature = signatures[_i];
                if (signature.typeParameters) {
                    return emptyArray;
                }
            }
            for (var i_1 = 1; i_1 < signatureLists.length; i_1++) {
                if (!signatureListsIdentical(signatures, signatureLists[i_1])) {
                    return emptyArray;
                }
            }
            var result = ts.map(signatures, cloneSignature);
            for (var i = 0; i < result.length; i++) {
                var s = result[i];
                s.resolvedReturnType = undefined;
                s.unionSignatures = ts.map(signatureLists, function (signatures) { return signatures[i]; });
            }
            return result;
        }
        function getUnionIndexType(types, kind) {
            var indexTypes = [];
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                var indexType = getIndexTypeOfType(type, kind);
                if (!indexType) {
                    return undefined;
                }
                indexTypes.push(indexType);
            }
            return getUnionType(indexTypes);
        }
        function resolveUnionTypeMembers(type) {
            var callSignatures = getUnionSignatures(type.types, 0);
            var constructSignatures = getUnionSignatures(type.types, 1);
            var stringIndexType = getUnionIndexType(type.types, 0);
            var numberIndexType = getUnionIndexType(type.types, 1);
            setObjectTypeMembers(type, emptySymbols, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        }
        function resolveAnonymousTypeMembers(type) {
            var symbol = type.symbol;
            var members;
            var callSignatures;
            var constructSignatures;
            var stringIndexType;
            var numberIndexType;
            if (symbol.flags & 2048) {
                members = symbol.members;
                callSignatures = getSignaturesOfSymbol(members["__call"]);
                constructSignatures = getSignaturesOfSymbol(members["__new"]);
                stringIndexType = getIndexTypeOfSymbol(symbol, 0);
                numberIndexType = getIndexTypeOfSymbol(symbol, 1);
            }
            else {
                members = emptySymbols;
                callSignatures = emptyArray;
                constructSignatures = emptyArray;
                if (symbol.flags & 1952) {
                    members = getExportsOfSymbol(symbol);
                }
                if (symbol.flags & (16 | 8192)) {
                    callSignatures = getSignaturesOfSymbol(symbol);
                }
                if (symbol.flags & 32) {
                    var classType = getDeclaredTypeOfClassOrInterface(symbol);
                    constructSignatures = getSignaturesOfSymbol(symbol.members["__constructor"]);
                    if (!constructSignatures.length) {
                        constructSignatures = getDefaultConstructSignatures(classType);
                    }
                    var baseTypes = getBaseTypes(classType);
                    if (baseTypes.length) {
                        members = createSymbolTable(getNamedMembers(members));
                        addInheritedMembers(members, getPropertiesOfObjectType(getTypeOfSymbol(baseTypes[0].symbol)));
                    }
                }
                stringIndexType = undefined;
                numberIndexType = (symbol.flags & 384) ? stringType : undefined;
            }
            setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        }
        function resolveObjectOrUnionTypeMembers(type) {
            if (!type.members) {
                if (type.flags & (1024 | 2048)) {
                    resolveClassOrInterfaceMembers(type);
                }
                else if (type.flags & 32768) {
                    resolveAnonymousTypeMembers(type);
                }
                else if (type.flags & 8192) {
                    resolveTupleTypeMembers(type);
                }
                else if (type.flags & 16384) {
                    resolveUnionTypeMembers(type);
                }
                else {
                    resolveTypeReferenceMembers(type);
                }
            }
            return type;
        }
        function getPropertiesOfObjectType(type) {
            if (type.flags & 48128) {
                return resolveObjectOrUnionTypeMembers(type).properties;
            }
            return emptyArray;
        }
        function getPropertyOfObjectType(type, name) {
            if (type.flags & 48128) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                if (ts.hasProperty(resolved.members, name)) {
                    var symbol = resolved.members[name];
                    if (symbolIsValue(symbol)) {
                        return symbol;
                    }
                }
            }
        }
        function getPropertiesOfUnionType(type) {
            var result = [];
            ts.forEach(getPropertiesOfType(type.types[0]), function (prop) {
                var unionProp = getPropertyOfUnionType(type, prop.name);
                if (unionProp) {
                    result.push(unionProp);
                }
            });
            return result;
        }
        function getPropertiesOfType(type) {
            type = getApparentType(type);
            return type.flags & 16384 ? getPropertiesOfUnionType(type) : getPropertiesOfObjectType(type);
        }
        function getApparentType(type) {
            if (type.flags & 16384) {
                type = getReducedTypeOfUnionType(type);
            }
            if (type.flags & 512) {
                do {
                    type = getConstraintOfTypeParameter(type);
                } while (type && type.flags & 512);
                if (!type) {
                    type = emptyObjectType;
                }
            }
            if (type.flags & 258) {
                type = globalStringType;
            }
            else if (type.flags & 132) {
                type = globalNumberType;
            }
            else if (type.flags & 8) {
                type = globalBooleanType;
            }
            else if (type.flags & 1048576) {
                type = globalESSymbolType;
            }
            return type;
        }
        function createUnionProperty(unionType, name) {
            var types = unionType.types;
            var props;
            for (var _i = 0; _i < types.length; _i++) {
                var current = types[_i];
                var type = getApparentType(current);
                if (type !== unknownType) {
                    var prop = getPropertyOfType(type, name);
                    if (!prop || getDeclarationFlagsFromSymbol(prop) & (32 | 64)) {
                        return undefined;
                    }
                    if (!props) {
                        props = [prop];
                    }
                    else {
                        props.push(prop);
                    }
                }
            }
            var propTypes = [];
            var declarations = [];
            for (var _a = 0; _a < props.length; _a++) {
                var prop = props[_a];
                if (prop.declarations) {
                    declarations.push.apply(declarations, prop.declarations);
                }
                propTypes.push(getTypeOfSymbol(prop));
            }
            var result = createSymbol(4 | 67108864 | 268435456, name);
            result.unionType = unionType;
            result.declarations = declarations;
            result.type = getUnionType(propTypes);
            return result;
        }
        function getPropertyOfUnionType(type, name) {
            var properties = type.resolvedProperties || (type.resolvedProperties = {});
            if (ts.hasProperty(properties, name)) {
                return properties[name];
            }
            var property = createUnionProperty(type, name);
            if (property) {
                properties[name] = property;
            }
            return property;
        }
        function getPropertyOfType(type, name) {
            type = getApparentType(type);
            if (type.flags & 48128) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                if (ts.hasProperty(resolved.members, name)) {
                    var symbol = resolved.members[name];
                    if (symbolIsValue(symbol)) {
                        return symbol;
                    }
                }
                if (resolved === anyFunctionType || resolved.callSignatures.length || resolved.constructSignatures.length) {
                    var symbol = getPropertyOfObjectType(globalFunctionType, name);
                    if (symbol) {
                        return symbol;
                    }
                }
                return getPropertyOfObjectType(globalObjectType, name);
            }
            if (type.flags & 16384) {
                return getPropertyOfUnionType(type, name);
            }
            return undefined;
        }
        function getSignaturesOfObjectOrUnionType(type, kind) {
            if (type.flags & (48128 | 16384)) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                return kind === 0 ? resolved.callSignatures : resolved.constructSignatures;
            }
            return emptyArray;
        }
        function getSignaturesOfType(type, kind) {
            return getSignaturesOfObjectOrUnionType(getApparentType(type), kind);
        }
        function typeHasCallOrConstructSignatures(type) {
            var apparentType = getApparentType(type);
            if (apparentType.flags & (48128 | 16384)) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                return resolved.callSignatures.length > 0
                    || resolved.constructSignatures.length > 0;
            }
            return false;
        }
        function getIndexTypeOfObjectOrUnionType(type, kind) {
            if (type.flags & (48128 | 16384)) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                return kind === 0 ? resolved.stringIndexType : resolved.numberIndexType;
            }
        }
        function getIndexTypeOfType(type, kind) {
            return getIndexTypeOfObjectOrUnionType(getApparentType(type), kind);
        }
        function getTypeParametersFromDeclaration(typeParameterDeclarations) {
            var result = [];
            ts.forEach(typeParameterDeclarations, function (node) {
                var tp = getDeclaredTypeOfTypeParameter(node.symbol);
                if (!ts.contains(result, tp)) {
                    result.push(tp);
                }
            });
            return result;
        }
        function symbolsToArray(symbols) {
            var result = [];
            for (var id in symbols) {
                if (!isReservedMemberName(id)) {
                    result.push(symbols[id]);
                }
            }
            return result;
        }
        function getSignatureFromDeclaration(declaration) {
            var links = getNodeLinks(declaration);
            if (!links.resolvedSignature) {
                var classType = declaration.kind === 136 ? getDeclaredTypeOfClassOrInterface(declaration.parent.symbol) : undefined;
                var typeParameters = classType ? classType.typeParameters :
                    declaration.typeParameters ? getTypeParametersFromDeclaration(declaration.typeParameters) : undefined;
                var parameters = [];
                var hasStringLiterals = false;
                var minArgumentCount = -1;
                for (var i = 0, n = declaration.parameters.length; i < n; i++) {
                    var param = declaration.parameters[i];
                    parameters.push(param.symbol);
                    if (param.type && param.type.kind === 8) {
                        hasStringLiterals = true;
                    }
                    if (minArgumentCount < 0) {
                        if (param.initializer || param.questionToken || param.dotDotDotToken) {
                            minArgumentCount = i;
                        }
                    }
                }
                if (minArgumentCount < 0) {
                    minArgumentCount = declaration.parameters.length;
                }
                var returnType;
                if (classType) {
                    returnType = classType;
                }
                else if (declaration.type) {
                    returnType = getTypeFromTypeNode(declaration.type);
                }
                else {
                    if (declaration.kind === 137 && !ts.hasDynamicName(declaration)) {
                        var setter = ts.getDeclarationOfKind(declaration.symbol, 138);
                        returnType = getAnnotatedAccessorType(setter);
                    }
                    if (!returnType && ts.nodeIsMissing(declaration.body)) {
                        returnType = anyType;
                    }
                }
                links.resolvedSignature = createSignature(declaration, typeParameters, parameters, returnType, minArgumentCount, ts.hasRestParameters(declaration), hasStringLiterals);
            }
            return links.resolvedSignature;
        }
        function getSignaturesOfSymbol(symbol) {
            if (!symbol)
                return emptyArray;
            var result = [];
            for (var i = 0, len = symbol.declarations.length; i < len; i++) {
                var node = symbol.declarations[i];
                switch (node.kind) {
                    case 143:
                    case 144:
                    case 201:
                    case 135:
                    case 134:
                    case 136:
                    case 139:
                    case 140:
                    case 141:
                    case 137:
                    case 138:
                    case 163:
                    case 164:
                        if (i > 0 && node.body) {
                            var previous = symbol.declarations[i - 1];
                            if (node.parent === previous.parent && node.kind === previous.kind && node.pos === previous.end) {
                                break;
                            }
                        }
                        result.push(getSignatureFromDeclaration(node));
                }
            }
            return result;
        }
        function getReturnTypeOfSignature(signature) {
            if (!signature.resolvedReturnType) {
                if (!pushTypeResolution(signature)) {
                    return unknownType;
                }
                var type;
                if (signature.target) {
                    type = instantiateType(getReturnTypeOfSignature(signature.target), signature.mapper);
                }
                else if (signature.unionSignatures) {
                    type = getUnionType(ts.map(signature.unionSignatures, getReturnTypeOfSignature));
                }
                else {
                    type = getReturnTypeFromBody(signature.declaration);
                }
                if (!popTypeResolution()) {
                    type = anyType;
                    if (compilerOptions.noImplicitAny) {
                        var declaration = signature.declaration;
                        if (declaration.name) {
                            error(declaration.name, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, ts.declarationNameToString(declaration.name));
                        }
                        else {
                            error(declaration, ts.Diagnostics.Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions);
                        }
                    }
                }
                signature.resolvedReturnType = type;
            }
            return signature.resolvedReturnType;
        }
        function getRestTypeOfSignature(signature) {
            if (signature.hasRestParameter) {
                var type = getTypeOfSymbol(ts.lastOrUndefined(signature.parameters));
                if (type.flags & 4096 && type.target === globalArrayType) {
                    return type.typeArguments[0];
                }
            }
            return anyType;
        }
        function getSignatureInstantiation(signature, typeArguments) {
            return instantiateSignature(signature, createTypeMapper(signature.typeParameters, typeArguments), true);
        }
        function getErasedSignature(signature) {
            if (!signature.typeParameters)
                return signature;
            if (!signature.erasedSignatureCache) {
                if (signature.target) {
                    signature.erasedSignatureCache = instantiateSignature(getErasedSignature(signature.target), signature.mapper);
                }
                else {
                    signature.erasedSignatureCache = instantiateSignature(signature, createTypeEraser(signature.typeParameters), true);
                }
            }
            return signature.erasedSignatureCache;
        }
        function getOrCreateTypeFromSignature(signature) {
            if (!signature.isolatedSignatureType) {
                var isConstructor = signature.declaration.kind === 136 || signature.declaration.kind === 140;
                var type = createObjectType(32768 | 65536);
                type.members = emptySymbols;
                type.properties = emptyArray;
                type.callSignatures = !isConstructor ? [signature] : emptyArray;
                type.constructSignatures = isConstructor ? [signature] : emptyArray;
                signature.isolatedSignatureType = type;
            }
            return signature.isolatedSignatureType;
        }
        function getIndexSymbol(symbol) {
            return symbol.members["__index"];
        }
        function getIndexDeclarationOfSymbol(symbol, kind) {
            var syntaxKind = kind === 1 ? 120 : 122;
            var indexSymbol = getIndexSymbol(symbol);
            if (indexSymbol) {
                var len = indexSymbol.declarations.length;
                for (var _i = 0, _a = indexSymbol.declarations; _i < _a.length; _i++) {
                    var decl = _a[_i];
                    var node = decl;
                    if (node.parameters.length === 1) {
                        var parameter = node.parameters[0];
                        if (parameter && parameter.type && parameter.type.kind === syntaxKind) {
                            return node;
                        }
                    }
                }
            }
            return undefined;
        }
        function getIndexTypeOfSymbol(symbol, kind) {
            var declaration = getIndexDeclarationOfSymbol(symbol, kind);
            return declaration
                ? declaration.type ? getTypeFromTypeNode(declaration.type) : anyType
                : undefined;
        }
        function getConstraintOfTypeParameter(type) {
            if (!type.constraint) {
                if (type.target) {
                    var targetConstraint = getConstraintOfTypeParameter(type.target);
                    type.constraint = targetConstraint ? instantiateType(targetConstraint, type.mapper) : noConstraintType;
                }
                else {
                    type.constraint = getTypeFromTypeNode(ts.getDeclarationOfKind(type.symbol, 129).constraint);
                }
            }
            return type.constraint === noConstraintType ? undefined : type.constraint;
        }
        function getTypeListId(types) {
            switch (types.length) {
                case 1:
                    return "" + types[0].id;
                case 2:
                    return types[0].id + "," + types[1].id;
                default:
                    var result = "";
                    for (var i = 0; i < types.length; i++) {
                        if (i > 0) {
                            result += ",";
                        }
                        result += types[i].id;
                    }
                    return result;
            }
        }
        function getWideningFlagsOfTypes(types) {
            var result = 0;
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                result |= type.flags;
            }
            return result & 786432;
        }
        function createTypeReference(target, typeArguments) {
            var id = getTypeListId(typeArguments);
            var type = target.instantiations[id];
            if (!type) {
                var flags = 4096 | getWideningFlagsOfTypes(typeArguments);
                type = target.instantiations[id] = createObjectType(flags, target.symbol);
                type.target = target;
                type.typeArguments = typeArguments;
            }
            return type;
        }
        function isTypeParameterReferenceIllegalInConstraint(typeReferenceNode, typeParameterSymbol) {
            var links = getNodeLinks(typeReferenceNode);
            if (links.isIllegalTypeReferenceInConstraint !== undefined) {
                return links.isIllegalTypeReferenceInConstraint;
            }
            var currentNode = typeReferenceNode;
            while (!ts.forEach(typeParameterSymbol.declarations, function (d) { return d.parent === currentNode.parent; })) {
                currentNode = currentNode.parent;
            }
            links.isIllegalTypeReferenceInConstraint = currentNode.kind === 129;
            return links.isIllegalTypeReferenceInConstraint;
        }
        function checkTypeParameterHasIllegalReferencesInConstraint(typeParameter) {
            var typeParameterSymbol;
            function check(n) {
                if (n.kind === 142 && n.typeName.kind === 65) {
                    var links = getNodeLinks(n);
                    if (links.isIllegalTypeReferenceInConstraint === undefined) {
                        var symbol = resolveName(typeParameter, n.typeName.text, 793056, undefined, undefined);
                        if (symbol && (symbol.flags & 262144)) {
                            links.isIllegalTypeReferenceInConstraint = ts.forEach(symbol.declarations, function (d) { return d.parent == typeParameter.parent; });
                        }
                    }
                    if (links.isIllegalTypeReferenceInConstraint) {
                        error(typeParameter, ts.Diagnostics.Constraint_of_a_type_parameter_cannot_reference_any_type_parameter_from_the_same_type_parameter_list);
                    }
                }
                ts.forEachChild(n, check);
            }
            if (typeParameter.constraint) {
                typeParameterSymbol = getSymbolOfNode(typeParameter);
                check(typeParameter.constraint);
            }
        }
        function getTypeFromTypeReferenceOrExpressionWithTypeArguments(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                var type;
                if (node.kind !== 177 || ts.isSupportedExpressionWithTypeArguments(node)) {
                    var typeNameOrExpression = node.kind === 142
                        ? node.typeName
                        : node.expression;
                    var symbol = resolveEntityName(typeNameOrExpression, 793056);
                    if (symbol) {
                        if ((symbol.flags & 262144) && isTypeParameterReferenceIllegalInConstraint(node, symbol)) {
                            type = unknownType;
                        }
                        else {
                            type = getDeclaredTypeOfSymbol(symbol);
                            if (type.flags & (1024 | 2048) && type.flags & 4096) {
                                var typeParameters = type.typeParameters;
                                if (node.typeArguments && node.typeArguments.length === typeParameters.length) {
                                    type = createTypeReference(type, ts.map(node.typeArguments, getTypeFromTypeNode));
                                }
                                else {
                                    error(node, ts.Diagnostics.Generic_type_0_requires_1_type_argument_s, typeToString(type, undefined, 1), typeParameters.length);
                                    type = undefined;
                                }
                            }
                            else {
                                if (node.typeArguments) {
                                    error(node, ts.Diagnostics.Type_0_is_not_generic, typeToString(type));
                                    type = undefined;
                                }
                            }
                        }
                    }
                }
                links.resolvedType = type || unknownType;
            }
            return links.resolvedType;
        }
        function getTypeFromTypeQueryNode(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = getWidenedType(checkExpressionOrQualifiedName(node.exprName));
            }
            return links.resolvedType;
        }
        function getTypeOfGlobalSymbol(symbol, arity) {
            function getTypeDeclaration(symbol) {
                var declarations = symbol.declarations;
                for (var _i = 0; _i < declarations.length; _i++) {
                    var declaration = declarations[_i];
                    switch (declaration.kind) {
                        case 202:
                        case 203:
                        case 205:
                            return declaration;
                    }
                }
            }
            if (!symbol) {
                return emptyObjectType;
            }
            var type = getDeclaredTypeOfSymbol(symbol);
            if (!(type.flags & 48128)) {
                error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_be_a_class_or_interface_type, symbol.name);
                return emptyObjectType;
            }
            if ((type.typeParameters ? type.typeParameters.length : 0) !== arity) {
                error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_have_1_type_parameter_s, symbol.name, arity);
                return emptyObjectType;
            }
            return type;
        }
        function getGlobalValueSymbol(name) {
            return getGlobalSymbol(name, 107455, ts.Diagnostics.Cannot_find_global_value_0);
        }
        function getGlobalTypeSymbol(name) {
            return getGlobalSymbol(name, 793056, ts.Diagnostics.Cannot_find_global_type_0);
        }
        function getGlobalSymbol(name, meaning, diagnostic) {
            return resolveName(undefined, name, meaning, diagnostic, name);
        }
        function getGlobalType(name, arity) {
            if (arity === void 0) { arity = 0; }
            return getTypeOfGlobalSymbol(getGlobalTypeSymbol(name), arity);
        }
        function getGlobalESSymbolConstructorSymbol() {
            return globalESSymbolConstructorSymbol || (globalESSymbolConstructorSymbol = getGlobalValueSymbol("Symbol"));
        }
        function createIterableType(elementType) {
            return globalIterableType !== emptyObjectType ? createTypeReference(globalIterableType, [elementType]) : emptyObjectType;
        }
        function createArrayType(elementType) {
            var arrayType = globalArrayType || getDeclaredTypeOfSymbol(globalArraySymbol);
            return arrayType !== emptyObjectType ? createTypeReference(arrayType, [elementType]) : emptyObjectType;
        }
        function getTypeFromArrayTypeNode(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = createArrayType(getTypeFromTypeNode(node.elementType));
            }
            return links.resolvedType;
        }
        function createTupleType(elementTypes) {
            var id = getTypeListId(elementTypes);
            var type = tupleTypes[id];
            if (!type) {
                type = tupleTypes[id] = createObjectType(8192);
                type.elementTypes = elementTypes;
            }
            return type;
        }
        function getTypeFromTupleTypeNode(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = createTupleType(ts.map(node.elementTypes, getTypeFromTypeNode));
            }
            return links.resolvedType;
        }
        function addTypeToSortedSet(sortedSet, type) {
            if (type.flags & 16384) {
                addTypesToSortedSet(sortedSet, type.types);
            }
            else {
                var i = 0;
                var id = type.id;
                while (i < sortedSet.length && sortedSet[i].id < id) {
                    i++;
                }
                if (i === sortedSet.length || sortedSet[i].id !== id) {
                    sortedSet.splice(i, 0, type);
                }
            }
        }
        function addTypesToSortedSet(sortedTypes, types) {
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                addTypeToSortedSet(sortedTypes, type);
            }
        }
        function isSubtypeOfAny(candidate, types) {
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                if (candidate !== type && isTypeSubtypeOf(candidate, type)) {
                    return true;
                }
            }
            return false;
        }
        var removeSubtypesStack = [];
        function removeSubtypes(types) {
            var typeListId = getTypeListId(types);
            if (removeSubtypesStack.lastIndexOf(typeListId) >= 0) {
                return;
            }
            removeSubtypesStack.push(typeListId);
            var i = types.length;
            while (i > 0) {
                i--;
                if (isSubtypeOfAny(types[i], types)) {
                    types.splice(i, 1);
                }
            }
            removeSubtypesStack.pop();
        }
        function containsAnyType(types) {
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                if (type.flags & 1) {
                    return true;
                }
            }
            return false;
        }
        function removeAllButLast(types, typeToRemove) {
            var i = types.length;
            while (i > 0 && types.length > 1) {
                i--;
                if (types[i] === typeToRemove) {
                    types.splice(i, 1);
                }
            }
        }
        function getUnionType(types, noSubtypeReduction) {
            if (types.length === 0) {
                return emptyObjectType;
            }
            var sortedTypes = [];
            addTypesToSortedSet(sortedTypes, types);
            if (noSubtypeReduction) {
                if (containsAnyType(sortedTypes)) {
                    return anyType;
                }
                removeAllButLast(sortedTypes, undefinedType);
                removeAllButLast(sortedTypes, nullType);
            }
            else {
                removeSubtypes(sortedTypes);
            }
            if (sortedTypes.length === 1) {
                return sortedTypes[0];
            }
            var id = getTypeListId(sortedTypes);
            var type = unionTypes[id];
            if (!type) {
                type = unionTypes[id] = createObjectType(16384 | getWideningFlagsOfTypes(sortedTypes));
                type.types = sortedTypes;
                type.reducedType = noSubtypeReduction ? undefined : type;
            }
            return type;
        }
        function getReducedTypeOfUnionType(type) {
            if (!type.reducedType) {
                type.reducedType = getUnionType(type.types, false);
            }
            return type.reducedType;
        }
        function getTypeFromUnionTypeNode(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = getUnionType(ts.map(node.types, getTypeFromTypeNode), true);
            }
            return links.resolvedType;
        }
        function getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = createObjectType(32768, node.symbol);
            }
            return links.resolvedType;
        }
        function getStringLiteralType(node) {
            if (ts.hasProperty(stringLiteralTypes, node.text)) {
                return stringLiteralTypes[node.text];
            }
            var type = stringLiteralTypes[node.text] = createType(256);
            type.text = ts.getTextOfNode(node);
            return type;
        }
        function getTypeFromStringLiteral(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = getStringLiteralType(node);
            }
            return links.resolvedType;
        }
        function getTypeFromTypeNode(node) {
            switch (node.kind) {
                case 112:
                    return anyType;
                case 122:
                    return stringType;
                case 120:
                    return numberType;
                case 113:
                    return booleanType;
                case 123:
                    return esSymbolType;
                case 99:
                    return voidType;
                case 8:
                    return getTypeFromStringLiteral(node);
                case 142:
                    return getTypeFromTypeReferenceOrExpressionWithTypeArguments(node);
                case 177:
                    return getTypeFromTypeReferenceOrExpressionWithTypeArguments(node);
                case 145:
                    return getTypeFromTypeQueryNode(node);
                case 147:
                    return getTypeFromArrayTypeNode(node);
                case 148:
                    return getTypeFromTupleTypeNode(node);
                case 149:
                    return getTypeFromUnionTypeNode(node);
                case 150:
                    return getTypeFromTypeNode(node.type);
                case 143:
                case 144:
                case 146:
                    return getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node);
                case 65:
                case 127:
                    var symbol = getSymbolInfo(node);
                    return symbol && getDeclaredTypeOfSymbol(symbol);
                default:
                    return unknownType;
            }
        }
        function instantiateList(items, mapper, instantiator) {
            if (items && items.length) {
                var result = [];
                for (var _i = 0; _i < items.length; _i++) {
                    var v = items[_i];
                    result.push(instantiator(v, mapper));
                }
                return result;
            }
            return items;
        }
        function createUnaryTypeMapper(source, target) {
            return function (t) { return t === source ? target : t; };
        }
        function createBinaryTypeMapper(source1, target1, source2, target2) {
            return function (t) { return t === source1 ? target1 : t === source2 ? target2 : t; };
        }
        function createTypeMapper(sources, targets) {
            switch (sources.length) {
                case 1: return createUnaryTypeMapper(sources[0], targets[0]);
                case 2: return createBinaryTypeMapper(sources[0], targets[0], sources[1], targets[1]);
            }
            return function (t) {
                for (var i = 0; i < sources.length; i++) {
                    if (t === sources[i]) {
                        return targets[i];
                    }
                }
                return t;
            };
        }
        function createUnaryTypeEraser(source) {
            return function (t) { return t === source ? anyType : t; };
        }
        function createBinaryTypeEraser(source1, source2) {
            return function (t) { return t === source1 || t === source2 ? anyType : t; };
        }
        function createTypeEraser(sources) {
            switch (sources.length) {
                case 1: return createUnaryTypeEraser(sources[0]);
                case 2: return createBinaryTypeEraser(sources[0], sources[1]);
            }
            return function (t) {
                for (var _i = 0; _i < sources.length; _i++) {
                    var source = sources[_i];
                    if (t === source) {
                        return anyType;
                    }
                }
                return t;
            };
        }
        function createInferenceMapper(context) {
            return function (t) {
                for (var i = 0; i < context.typeParameters.length; i++) {
                    if (t === context.typeParameters[i]) {
                        context.inferences[i].isFixed = true;
                        return getInferredType(context, i);
                    }
                }
                return t;
            };
        }
        function identityMapper(type) {
            return type;
        }
        function combineTypeMappers(mapper1, mapper2) {
            return function (t) { return instantiateType(mapper1(t), mapper2); };
        }
        function instantiateTypeParameter(typeParameter, mapper) {
            var result = createType(512);
            result.symbol = typeParameter.symbol;
            if (typeParameter.constraint) {
                result.constraint = instantiateType(typeParameter.constraint, mapper);
            }
            else {
                result.target = typeParameter;
                result.mapper = mapper;
            }
            return result;
        }
        function instantiateSignature(signature, mapper, eraseTypeParameters) {
            var freshTypeParameters;
            if (signature.typeParameters && !eraseTypeParameters) {
                freshTypeParameters = instantiateList(signature.typeParameters, mapper, instantiateTypeParameter);
                mapper = combineTypeMappers(createTypeMapper(signature.typeParameters, freshTypeParameters), mapper);
            }
            var result = createSignature(signature.declaration, freshTypeParameters, instantiateList(signature.parameters, mapper, instantiateSymbol), signature.resolvedReturnType ? instantiateType(signature.resolvedReturnType, mapper) : undefined, signature.minArgumentCount, signature.hasRestParameter, signature.hasStringLiterals);
            result.target = signature;
            result.mapper = mapper;
            return result;
        }
        function instantiateSymbol(symbol, mapper) {
            if (symbol.flags & 16777216) {
                var links = getSymbolLinks(symbol);
                symbol = links.target;
                mapper = combineTypeMappers(links.mapper, mapper);
            }
            var result = createSymbol(16777216 | 67108864 | symbol.flags, symbol.name);
            result.declarations = symbol.declarations;
            result.parent = symbol.parent;
            result.target = symbol;
            result.mapper = mapper;
            if (symbol.valueDeclaration) {
                result.valueDeclaration = symbol.valueDeclaration;
            }
            return result;
        }
        function instantiateAnonymousType(type, mapper) {
            var result = createObjectType(32768, type.symbol);
            result.properties = instantiateList(getPropertiesOfObjectType(type), mapper, instantiateSymbol);
            result.members = createSymbolTable(result.properties);
            result.callSignatures = instantiateList(getSignaturesOfType(type, 0), mapper, instantiateSignature);
            result.constructSignatures = instantiateList(getSignaturesOfType(type, 1), mapper, instantiateSignature);
            var stringIndexType = getIndexTypeOfType(type, 0);
            var numberIndexType = getIndexTypeOfType(type, 1);
            if (stringIndexType)
                result.stringIndexType = instantiateType(stringIndexType, mapper);
            if (numberIndexType)
                result.numberIndexType = instantiateType(numberIndexType, mapper);
            return result;
        }
        function instantiateType(type, mapper) {
            if (mapper !== identityMapper) {
                if (type.flags & 512) {
                    return mapper(type);
                }
                if (type.flags & 32768) {
                    return type.symbol && type.symbol.flags & (16 | 8192 | 2048 | 4096) ?
                        instantiateAnonymousType(type, mapper) : type;
                }
                if (type.flags & 4096) {
                    return createTypeReference(type.target, instantiateList(type.typeArguments, mapper, instantiateType));
                }
                if (type.flags & 8192) {
                    return createTupleType(instantiateList(type.elementTypes, mapper, instantiateType));
                }
                if (type.flags & 16384) {
                    return getUnionType(instantiateList(type.types, mapper, instantiateType), true);
                }
            }
            return type;
        }
        function isContextSensitive(node) {
            ts.Debug.assert(node.kind !== 135 || ts.isObjectLiteralMethod(node));
            switch (node.kind) {
                case 163:
                case 164:
                    return isContextSensitiveFunctionLikeDeclaration(node);
                case 155:
                    return ts.forEach(node.properties, isContextSensitive);
                case 154:
                    return ts.forEach(node.elements, isContextSensitive);
                case 171:
                    return isContextSensitive(node.whenTrue) ||
                        isContextSensitive(node.whenFalse);
                case 170:
                    return node.operatorToken.kind === 49 &&
                        (isContextSensitive(node.left) || isContextSensitive(node.right));
                case 225:
                    return isContextSensitive(node.initializer);
                case 135:
                case 134:
                    return isContextSensitiveFunctionLikeDeclaration(node);
                case 162:
                    return isContextSensitive(node.expression);
            }
            return false;
        }
        function isContextSensitiveFunctionLikeDeclaration(node) {
            return !node.typeParameters && node.parameters.length && !ts.forEach(node.parameters, function (p) { return p.type; });
        }
        function getTypeWithoutConstructors(type) {
            if (type.flags & 48128) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                if (resolved.constructSignatures.length) {
                    var result = createObjectType(32768, type.symbol);
                    result.members = resolved.members;
                    result.properties = resolved.properties;
                    result.callSignatures = resolved.callSignatures;
                    result.constructSignatures = emptyArray;
                    type = result;
                }
            }
            return type;
        }
        var subtypeRelation = {};
        var assignableRelation = {};
        var identityRelation = {};
        function isTypeIdenticalTo(source, target) {
            return checkTypeRelatedTo(source, target, identityRelation, undefined);
        }
        function compareTypes(source, target) {
            return checkTypeRelatedTo(source, target, identityRelation, undefined) ? -1 : 0;
        }
        function isTypeSubtypeOf(source, target) {
            return checkTypeSubtypeOf(source, target, undefined);
        }
        function isTypeAssignableTo(source, target) {
            return checkTypeAssignableTo(source, target, undefined);
        }
        function checkTypeSubtypeOf(source, target, errorNode, headMessage, containingMessageChain) {
            return checkTypeRelatedTo(source, target, subtypeRelation, errorNode, headMessage, containingMessageChain);
        }
        function checkTypeAssignableTo(source, target, errorNode, headMessage) {
            return checkTypeRelatedTo(source, target, assignableRelation, errorNode, headMessage);
        }
        function isSignatureAssignableTo(source, target) {
            var sourceType = getOrCreateTypeFromSignature(source);
            var targetType = getOrCreateTypeFromSignature(target);
            return checkTypeRelatedTo(sourceType, targetType, assignableRelation, undefined);
        }
        function checkTypeRelatedTo(source, target, relation, errorNode, headMessage, containingMessageChain) {
            var errorInfo;
            var sourceStack;
            var targetStack;
            var maybeStack;
            var expandingFlags;
            var depth = 0;
            var overflow = false;
            var elaborateErrors = false;
            ts.Debug.assert(relation !== identityRelation || !errorNode, "no error reporting in identity checking");
            var result = isRelatedTo(source, target, errorNode !== undefined, headMessage);
            if (overflow) {
                error(errorNode, ts.Diagnostics.Excessive_stack_depth_comparing_types_0_and_1, typeToString(source), typeToString(target));
            }
            else if (errorInfo) {
                if (errorInfo.next === undefined) {
                    errorInfo = undefined;
                    elaborateErrors = true;
                    isRelatedTo(source, target, errorNode !== undefined, headMessage);
                }
                if (containingMessageChain) {
                    errorInfo = ts.concatenateDiagnosticMessageChains(containingMessageChain, errorInfo);
                }
                diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(errorNode, errorInfo));
            }
            return result !== 0;
            function reportError(message, arg0, arg1, arg2) {
                errorInfo = ts.chainDiagnosticMessages(errorInfo, message, arg0, arg1, arg2);
            }
            function isRelatedTo(source, target, reportErrors, headMessage) {
                var result;
                if (source === target)
                    return -1;
                if (relation !== identityRelation) {
                    if (target.flags & 1)
                        return -1;
                    if (source === undefinedType)
                        return -1;
                    if (source === nullType && target !== undefinedType)
                        return -1;
                    if (source.flags & 128 && target === numberType)
                        return -1;
                    if (source.flags & 256 && target === stringType)
                        return -1;
                    if (relation === assignableRelation) {
                        if (source.flags & 1)
                            return -1;
                        if (source === numberType && target.flags & 128)
                            return -1;
                    }
                }
                var saveErrorInfo = errorInfo;
                if (source.flags & 16384 || target.flags & 16384) {
                    if (relation === identityRelation) {
                        if (source.flags & 16384 && target.flags & 16384) {
                            if (result = unionTypeRelatedToUnionType(source, target)) {
                                if (result &= unionTypeRelatedToUnionType(target, source)) {
                                    return result;
                                }
                            }
                        }
                        else if (source.flags & 16384) {
                            if (result = unionTypeRelatedToType(source, target, reportErrors)) {
                                return result;
                            }
                        }
                        else {
                            if (result = unionTypeRelatedToType(target, source, reportErrors)) {
                                return result;
                            }
                        }
                    }
                    else {
                        if (source.flags & 16384) {
                            if (result = unionTypeRelatedToType(source, target, reportErrors)) {
                                return result;
                            }
                        }
                        else {
                            if (result = typeRelatedToUnionType(source, target, reportErrors)) {
                                return result;
                            }
                        }
                    }
                }
                else if (source.flags & 512 && target.flags & 512) {
                    if (result = typeParameterRelatedTo(source, target, reportErrors)) {
                        return result;
                    }
                }
                else if (source.flags & 4096 && target.flags & 4096 && source.target === target.target) {
                    if (result = typesRelatedTo(source.typeArguments, target.typeArguments, reportErrors)) {
                        return result;
                    }
                }
                var reportStructuralErrors = reportErrors && errorInfo === saveErrorInfo;
                var sourceOrApparentType = relation === identityRelation ? source : getApparentType(source);
                if (sourceOrApparentType.flags & 48128 && target.flags & 48128) {
                    if (result = objectTypeRelatedTo(sourceOrApparentType, target, reportStructuralErrors)) {
                        errorInfo = saveErrorInfo;
                        return result;
                    }
                }
                else if (source.flags & 512 && sourceOrApparentType.flags & 16384) {
                    errorInfo = saveErrorInfo;
                    if (result = isRelatedTo(sourceOrApparentType, target, reportErrors)) {
                        return result;
                    }
                }
                if (reportErrors) {
                    headMessage = headMessage || ts.Diagnostics.Type_0_is_not_assignable_to_type_1;
                    var sourceType = typeToString(source);
                    var targetType = typeToString(target);
                    if (sourceType === targetType) {
                        sourceType = typeToString(source, undefined, 128);
                        targetType = typeToString(target, undefined, 128);
                    }
                    reportError(headMessage, sourceType, targetType);
                }
                return 0;
            }
            function unionTypeRelatedToUnionType(source, target) {
                var result = -1;
                var sourceTypes = source.types;
                for (var _i = 0; _i < sourceTypes.length; _i++) {
                    var sourceType = sourceTypes[_i];
                    var related = typeRelatedToUnionType(sourceType, target, false);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
                return result;
            }
            function typeRelatedToUnionType(source, target, reportErrors) {
                var targetTypes = target.types;
                for (var i = 0, len = targetTypes.length; i < len; i++) {
                    var related = isRelatedTo(source, targetTypes[i], reportErrors && i === len - 1);
                    if (related) {
                        return related;
                    }
                }
                return 0;
            }
            function unionTypeRelatedToType(source, target, reportErrors) {
                var result = -1;
                var sourceTypes = source.types;
                for (var _i = 0; _i < sourceTypes.length; _i++) {
                    var sourceType = sourceTypes[_i];
                    var related = isRelatedTo(sourceType, target, reportErrors);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
                return result;
            }
            function typesRelatedTo(sources, targets, reportErrors) {
                var result = -1;
                for (var i = 0, len = sources.length; i < len; i++) {
                    var related = isRelatedTo(sources[i], targets[i], reportErrors);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
                return result;
            }
            function typeParameterRelatedTo(source, target, reportErrors) {
                if (relation === identityRelation) {
                    if (source.symbol.name !== target.symbol.name) {
                        return 0;
                    }
                    if (source.constraint === target.constraint) {
                        return -1;
                    }
                    if (source.constraint === noConstraintType || target.constraint === noConstraintType) {
                        return 0;
                    }
                    return isRelatedTo(source.constraint, target.constraint, reportErrors);
                }
                else {
                    while (true) {
                        var constraint = getConstraintOfTypeParameter(source);
                        if (constraint === target)
                            return -1;
                        if (!(constraint && constraint.flags & 512))
                            break;
                        source = constraint;
                    }
                    return 0;
                }
            }
            function objectTypeRelatedTo(source, target, reportErrors) {
                if (overflow) {
                    return 0;
                }
                var id = relation !== identityRelation || source.id < target.id ? source.id + "," + target.id : target.id + "," + source.id;
                var related = relation[id];
                if (related !== undefined) {
                    if (!elaborateErrors || (related === 3)) {
                        return related === 1 ? -1 : 0;
                    }
                }
                if (depth > 0) {
                    for (var i = 0; i < depth; i++) {
                        if (maybeStack[i][id]) {
                            return 1;
                        }
                    }
                    if (depth === 100) {
                        overflow = true;
                        return 0;
                    }
                }
                else {
                    sourceStack = [];
                    targetStack = [];
                    maybeStack = [];
                    expandingFlags = 0;
                }
                sourceStack[depth] = source;
                targetStack[depth] = target;
                maybeStack[depth] = {};
                maybeStack[depth][id] = 1;
                depth++;
                var saveExpandingFlags = expandingFlags;
                if (!(expandingFlags & 1) && isDeeplyNestedGeneric(source, sourceStack))
                    expandingFlags |= 1;
                if (!(expandingFlags & 2) && isDeeplyNestedGeneric(target, targetStack))
                    expandingFlags |= 2;
                var result;
                if (expandingFlags === 3) {
                    result = 1;
                }
                else {
                    result = propertiesRelatedTo(source, target, reportErrors);
                    if (result) {
                        result &= signaturesRelatedTo(source, target, 0, reportErrors);
                        if (result) {
                            result &= signaturesRelatedTo(source, target, 1, reportErrors);
                            if (result) {
                                result &= stringIndexTypesRelatedTo(source, target, reportErrors);
                                if (result) {
                                    result &= numberIndexTypesRelatedTo(source, target, reportErrors);
                                }
                            }
                        }
                    }
                }
                expandingFlags = saveExpandingFlags;
                depth--;
                if (result) {
                    var maybeCache = maybeStack[depth];
                    var destinationCache = (result === -1 || depth === 0) ? relation : maybeStack[depth - 1];
                    ts.copyMap(maybeCache, destinationCache);
                }
                else {
                    relation[id] = reportErrors ? 3 : 2;
                }
                return result;
            }
            function isDeeplyNestedGeneric(type, stack) {
                if (type.flags & 4096 && depth >= 10) {
                    var target_1 = type.target;
                    var count = 0;
                    for (var i = 0; i < depth; i++) {
                        var t = stack[i];
                        if (t.flags & 4096 && t.target === target_1) {
                            count++;
                            if (count >= 10)
                                return true;
                        }
                    }
                }
                return false;
            }
            function propertiesRelatedTo(source, target, reportErrors) {
                if (relation === identityRelation) {
                    return propertiesIdenticalTo(source, target);
                }
                var result = -1;
                var properties = getPropertiesOfObjectType(target);
                var requireOptionalProperties = relation === subtypeRelation && !(source.flags & 131072);
                for (var _i = 0; _i < properties.length; _i++) {
                    var targetProp = properties[_i];
                    var sourceProp = getPropertyOfType(source, targetProp.name);
                    if (sourceProp !== targetProp) {
                        if (!sourceProp) {
                            if (!(targetProp.flags & 536870912) || requireOptionalProperties) {
                                if (reportErrors) {
                                    reportError(ts.Diagnostics.Property_0_is_missing_in_type_1, symbolToString(targetProp), typeToString(source));
                                }
                                return 0;
                            }
                        }
                        else if (!(targetProp.flags & 134217728)) {
                            var sourceFlags = getDeclarationFlagsFromSymbol(sourceProp);
                            var targetFlags = getDeclarationFlagsFromSymbol(targetProp);
                            if (sourceFlags & 32 || targetFlags & 32) {
                                if (sourceProp.valueDeclaration !== targetProp.valueDeclaration) {
                                    if (reportErrors) {
                                        if (sourceFlags & 32 && targetFlags & 32) {
                                            reportError(ts.Diagnostics.Types_have_separate_declarations_of_a_private_property_0, symbolToString(targetProp));
                                        }
                                        else {
                                            reportError(ts.Diagnostics.Property_0_is_private_in_type_1_but_not_in_type_2, symbolToString(targetProp), typeToString(sourceFlags & 32 ? source : target), typeToString(sourceFlags & 32 ? target : source));
                                        }
                                    }
                                    return 0;
                                }
                            }
                            else if (targetFlags & 64) {
                                var sourceDeclaredInClass = sourceProp.parent && sourceProp.parent.flags & 32;
                                var sourceClass = sourceDeclaredInClass ? getDeclaredTypeOfSymbol(sourceProp.parent) : undefined;
                                var targetClass = getDeclaredTypeOfSymbol(targetProp.parent);
                                if (!sourceClass || !hasBaseType(sourceClass, targetClass)) {
                                    if (reportErrors) {
                                        reportError(ts.Diagnostics.Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2, symbolToString(targetProp), typeToString(sourceClass || source), typeToString(targetClass));
                                    }
                                    return 0;
                                }
                            }
                            else if (sourceFlags & 64) {
                                if (reportErrors) {
                                    reportError(ts.Diagnostics.Property_0_is_protected_in_type_1_but_public_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target));
                                }
                                return 0;
                            }
                            var related = isRelatedTo(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp), reportErrors);
                            if (!related) {
                                if (reportErrors) {
                                    reportError(ts.Diagnostics.Types_of_property_0_are_incompatible, symbolToString(targetProp));
                                }
                                return 0;
                            }
                            result &= related;
                            if (sourceProp.flags & 536870912 && !(targetProp.flags & 536870912)) {
                                if (reportErrors) {
                                    reportError(ts.Diagnostics.Property_0_is_optional_in_type_1_but_required_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target));
                                }
                                return 0;
                            }
                        }
                    }
                }
                return result;
            }
            function propertiesIdenticalTo(source, target) {
                var sourceProperties = getPropertiesOfObjectType(source);
                var targetProperties = getPropertiesOfObjectType(target);
                if (sourceProperties.length !== targetProperties.length) {
                    return 0;
                }
                var result = -1;
                for (var _i = 0; _i < sourceProperties.length; _i++) {
                    var sourceProp = sourceProperties[_i];
                    var targetProp = getPropertyOfObjectType(target, sourceProp.name);
                    if (!targetProp) {
                        return 0;
                    }
                    var related = compareProperties(sourceProp, targetProp, isRelatedTo);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
                return result;
            }
            function signaturesRelatedTo(source, target, kind, reportErrors) {
                if (relation === identityRelation) {
                    return signaturesIdenticalTo(source, target, kind);
                }
                if (target === anyFunctionType || source === anyFunctionType) {
                    return -1;
                }
                var sourceSignatures = getSignaturesOfType(source, kind);
                var targetSignatures = getSignaturesOfType(target, kind);
                var result = -1;
                var saveErrorInfo = errorInfo;
                outer: for (var _i = 0; _i < targetSignatures.length; _i++) {
                    var t = targetSignatures[_i];
                    if (!t.hasStringLiterals || target.flags & 65536) {
                        var localErrors = reportErrors;
                        for (var _a = 0; _a < sourceSignatures.length; _a++) {
                            var s = sourceSignatures[_a];
                            if (!s.hasStringLiterals || source.flags & 65536) {
                                var related = signatureRelatedTo(s, t, localErrors);
                                if (related) {
                                    result &= related;
                                    errorInfo = saveErrorInfo;
                                    continue outer;
                                }
                                localErrors = false;
                            }
                        }
                        return 0;
                    }
                }
                return result;
            }
            function signatureRelatedTo(source, target, reportErrors) {
                if (source === target) {
                    return -1;
                }
                if (!target.hasRestParameter && source.minArgumentCount > target.parameters.length) {
                    return 0;
                }
                var sourceMax = source.parameters.length;
                var targetMax = target.parameters.length;
                var checkCount;
                if (source.hasRestParameter && target.hasRestParameter) {
                    checkCount = sourceMax > targetMax ? sourceMax : targetMax;
                    sourceMax--;
                    targetMax--;
                }
                else if (source.hasRestParameter) {
                    sourceMax--;
                    checkCount = targetMax;
                }
                else if (target.hasRestParameter) {
                    targetMax--;
                    checkCount = sourceMax;
                }
                else {
                    checkCount = sourceMax < targetMax ? sourceMax : targetMax;
                }
                source = getErasedSignature(source);
                target = getErasedSignature(target);
                var result = -1;
                for (var i = 0; i < checkCount; i++) {
                    var s_1 = i < sourceMax ? getTypeOfSymbol(source.parameters[i]) : getRestTypeOfSignature(source);
                    var t_1 = i < targetMax ? getTypeOfSymbol(target.parameters[i]) : getRestTypeOfSignature(target);
                    var saveErrorInfo = errorInfo;
                    var related = isRelatedTo(s_1, t_1, reportErrors);
                    if (!related) {
                        related = isRelatedTo(t_1, s_1, false);
                        if (!related) {
                            if (reportErrors) {
                                reportError(ts.Diagnostics.Types_of_parameters_0_and_1_are_incompatible, source.parameters[i < sourceMax ? i : sourceMax].name, target.parameters[i < targetMax ? i : targetMax].name);
                            }
                            return 0;
                        }
                        errorInfo = saveErrorInfo;
                    }
                    result &= related;
                }
                var t = getReturnTypeOfSignature(target);
                if (t === voidType)
                    return result;
                var s = getReturnTypeOfSignature(source);
                return result & isRelatedTo(s, t, reportErrors);
            }
            function signaturesIdenticalTo(source, target, kind) {
                var sourceSignatures = getSignaturesOfType(source, kind);
                var targetSignatures = getSignaturesOfType(target, kind);
                if (sourceSignatures.length !== targetSignatures.length) {
                    return 0;
                }
                var result = -1;
                for (var i = 0, len = sourceSignatures.length; i < len; ++i) {
                    var related = compareSignatures(sourceSignatures[i], targetSignatures[i], true, isRelatedTo);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
                return result;
            }
            function stringIndexTypesRelatedTo(source, target, reportErrors) {
                if (relation === identityRelation) {
                    return indexTypesIdenticalTo(0, source, target);
                }
                var targetType = getIndexTypeOfType(target, 0);
                if (targetType) {
                    var sourceType = getIndexTypeOfType(source, 0);
                    if (!sourceType) {
                        if (reportErrors) {
                            reportError(ts.Diagnostics.Index_signature_is_missing_in_type_0, typeToString(source));
                        }
                        return 0;
                    }
                    var related = isRelatedTo(sourceType, targetType, reportErrors);
                    if (!related) {
                        if (reportErrors) {
                            reportError(ts.Diagnostics.Index_signatures_are_incompatible);
                        }
                        return 0;
                    }
                    return related;
                }
                return -1;
            }
            function numberIndexTypesRelatedTo(source, target, reportErrors) {
                if (relation === identityRelation) {
                    return indexTypesIdenticalTo(1, source, target);
                }
                var targetType = getIndexTypeOfType(target, 1);
                if (targetType) {
                    var sourceStringType = getIndexTypeOfType(source, 0);
                    var sourceNumberType = getIndexTypeOfType(source, 1);
                    if (!(sourceStringType || sourceNumberType)) {
                        if (reportErrors) {
                            reportError(ts.Diagnostics.Index_signature_is_missing_in_type_0, typeToString(source));
                        }
                        return 0;
                    }
                    var related;
                    if (sourceStringType && sourceNumberType) {
                        related = isRelatedTo(sourceStringType, targetType, false) || isRelatedTo(sourceNumberType, targetType, reportErrors);
                    }
                    else {
                        related = isRelatedTo(sourceStringType || sourceNumberType, targetType, reportErrors);
                    }
                    if (!related) {
                        if (reportErrors) {
                            reportError(ts.Diagnostics.Index_signatures_are_incompatible);
                        }
                        return 0;
                    }
                    return related;
                }
                return -1;
            }
            function indexTypesIdenticalTo(indexKind, source, target) {
                var targetType = getIndexTypeOfType(target, indexKind);
                var sourceType = getIndexTypeOfType(source, indexKind);
                if (!sourceType && !targetType) {
                    return -1;
                }
                if (sourceType && targetType) {
                    return isRelatedTo(sourceType, targetType);
                }
                return 0;
            }
        }
        function isPropertyIdenticalTo(sourceProp, targetProp) {
            return compareProperties(sourceProp, targetProp, compareTypes) !== 0;
        }
        function compareProperties(sourceProp, targetProp, compareTypes) {
            if (sourceProp === targetProp) {
                return -1;
            }
            var sourcePropAccessibility = getDeclarationFlagsFromSymbol(sourceProp) & (32 | 64);
            var targetPropAccessibility = getDeclarationFlagsFromSymbol(targetProp) & (32 | 64);
            if (sourcePropAccessibility !== targetPropAccessibility) {
                return 0;
            }
            if (sourcePropAccessibility) {
                if (getTargetSymbol(sourceProp) !== getTargetSymbol(targetProp)) {
                    return 0;
                }
            }
            else {
                if ((sourceProp.flags & 536870912) !== (targetProp.flags & 536870912)) {
                    return 0;
                }
            }
            return compareTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp));
        }
        function compareSignatures(source, target, compareReturnTypes, compareTypes) {
            if (source === target) {
                return -1;
            }
            if (source.parameters.length !== target.parameters.length ||
                source.minArgumentCount !== target.minArgumentCount ||
                source.hasRestParameter !== target.hasRestParameter) {
                return 0;
            }
            var result = -1;
            if (source.typeParameters && target.typeParameters) {
                if (source.typeParameters.length !== target.typeParameters.length) {
                    return 0;
                }
                for (var i = 0, len = source.typeParameters.length; i < len; ++i) {
                    var related = compareTypes(source.typeParameters[i], target.typeParameters[i]);
                    if (!related) {
                        return 0;
                    }
                    result &= related;
                }
            }
            else if (source.typeParameters || target.typeParameters) {
                return 0;
            }
            source = getErasedSignature(source);
            target = getErasedSignature(target);
            for (var i = 0, len = source.parameters.length; i < len; i++) {
                var s = source.hasRestParameter && i === len - 1 ? getRestTypeOfSignature(source) : getTypeOfSymbol(source.parameters[i]);
                var t = target.hasRestParameter && i === len - 1 ? getRestTypeOfSignature(target) : getTypeOfSymbol(target.parameters[i]);
                var related = compareTypes(s, t);
                if (!related) {
                    return 0;
                }
                result &= related;
            }
            if (compareReturnTypes) {
                result &= compareTypes(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target));
            }
            return result;
        }
        function isSupertypeOfEach(candidate, types) {
            for (var _i = 0; _i < types.length; _i++) {
                var type = types[_i];
                if (candidate !== type && !isTypeSubtypeOf(type, candidate))
                    return false;
            }
            return true;
        }
        function getCommonSupertype(types) {
            return ts.forEach(types, function (t) { return isSupertypeOfEach(t, types) ? t : undefined; });
        }
        function reportNoCommonSupertypeError(types, errorLocation, errorMessageChainHead) {
            var bestSupertype;
            var bestSupertypeDownfallType;
            var bestSupertypeScore = 0;
            for (var i = 0; i < types.length; i++) {
                var score = 0;
                var downfallType = undefined;
                for (var j = 0; j < types.length; j++) {
                    if (isTypeSubtypeOf(types[j], types[i])) {
                        score++;
                    }
                    else if (!downfallType) {
                        downfallType = types[j];
                    }
                }
                ts.Debug.assert(!!downfallType, "If there is no common supertype, each type should have a downfallType");
                if (score > bestSupertypeScore) {
                    bestSupertype = types[i];
                    bestSupertypeDownfallType = downfallType;
                    bestSupertypeScore = score;
                }
                if (bestSupertypeScore === types.length - 1) {
                    break;
                }
            }
            checkTypeSubtypeOf(bestSupertypeDownfallType, bestSupertype, errorLocation, ts.Diagnostics.Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0, errorMessageChainHead);
        }
        function isArrayType(type) {
            return type.flags & 4096 && type.target === globalArrayType;
        }
        function isArrayLikeType(type) {
            return !(type.flags & (32 | 64)) && isTypeAssignableTo(type, anyArrayType);
        }
        function isTupleLikeType(type) {
            return !!getPropertyOfType(type, "0");
        }
        function isTupleType(type) {
            return (type.flags & 8192) && !!type.elementTypes;
        }
        function getWidenedTypeOfObjectLiteral(type) {
            var properties = getPropertiesOfObjectType(type);
            var members = {};
            ts.forEach(properties, function (p) {
                var propType = getTypeOfSymbol(p);
                var widenedType = getWidenedType(propType);
                if (propType !== widenedType) {
                    var symbol = createSymbol(p.flags | 67108864, p.name);
                    symbol.declarations = p.declarations;
                    symbol.parent = p.parent;
                    symbol.type = widenedType;
                    symbol.target = p;
                    if (p.valueDeclaration)
                        symbol.valueDeclaration = p.valueDeclaration;
                    p = symbol;
                }
                members[p.name] = p;
            });
            var stringIndexType = getIndexTypeOfType(type, 0);
            var numberIndexType = getIndexTypeOfType(type, 1);
            if (stringIndexType)
                stringIndexType = getWidenedType(stringIndexType);
            if (numberIndexType)
                numberIndexType = getWidenedType(numberIndexType);
            return createAnonymousType(type.symbol, members, emptyArray, emptyArray, stringIndexType, numberIndexType);
        }
        function getWidenedType(type) {
            if (type.flags & 786432) {
                if (type.flags & (32 | 64)) {
                    return anyType;
                }
                if (type.flags & 131072) {
                    return getWidenedTypeOfObjectLiteral(type);
                }
                if (type.flags & 16384) {
                    return getUnionType(ts.map(type.types, getWidenedType));
                }
                if (isArrayType(type)) {
                    return createArrayType(getWidenedType(type.typeArguments[0]));
                }
            }
            return type;
        }
        function reportWideningErrorsInType(type) {
            if (type.flags & 16384) {
                var errorReported = false;
                ts.forEach(type.types, function (t) {
                    if (reportWideningErrorsInType(t)) {
                        errorReported = true;
                    }
                });
                return errorReported;
            }
            if (isArrayType(type)) {
                return reportWideningErrorsInType(type.typeArguments[0]);
            }
            if (type.flags & 131072) {
                var errorReported = false;
                ts.forEach(getPropertiesOfObjectType(type), function (p) {
                    var t = getTypeOfSymbol(p);
                    if (t.flags & 262144) {
                        if (!reportWideningErrorsInType(t)) {
                            error(p.valueDeclaration, ts.Diagnostics.Object_literal_s_property_0_implicitly_has_an_1_type, p.name, typeToString(getWidenedType(t)));
                        }
                        errorReported = true;
                    }
                });
                return errorReported;
            }
            return false;
        }
        function reportImplicitAnyError(declaration, type) {
            var typeAsString = typeToString(getWidenedType(type));
            var diagnostic;
            switch (declaration.kind) {
                case 133:
                case 132:
                    diagnostic = ts.Diagnostics.Member_0_implicitly_has_an_1_type;
                    break;
                case 130:
                    diagnostic = declaration.dotDotDotToken ?
                        ts.Diagnostics.Rest_parameter_0_implicitly_has_an_any_type :
                        ts.Diagnostics.Parameter_0_implicitly_has_an_1_type;
                    break;
                case 201:
                case 135:
                case 134:
                case 137:
                case 138:
                case 163:
                case 164:
                    if (!declaration.name) {
                        error(declaration, ts.Diagnostics.Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type, typeAsString);
                        return;
                    }
                    diagnostic = ts.Diagnostics._0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type;
                    break;
                default:
                    diagnostic = ts.Diagnostics.Variable_0_implicitly_has_an_1_type;
            }
            error(declaration, diagnostic, ts.declarationNameToString(declaration.name), typeAsString);
        }
        function reportErrorsFromWidening(declaration, type) {
            if (produceDiagnostics && compilerOptions.noImplicitAny && type.flags & 262144) {
                if (!reportWideningErrorsInType(type)) {
                    reportImplicitAnyError(declaration, type);
                }
            }
        }
        function forEachMatchingParameterType(source, target, callback) {
            var sourceMax = source.parameters.length;
            var targetMax = target.parameters.length;
            var count;
            if (source.hasRestParameter && target.hasRestParameter) {
                count = sourceMax > targetMax ? sourceMax : targetMax;
                sourceMax--;
                targetMax--;
            }
            else if (source.hasRestParameter) {
                sourceMax--;
                count = targetMax;
            }
            else if (target.hasRestParameter) {
                targetMax--;
                count = sourceMax;
            }
            else {
                count = sourceMax < targetMax ? sourceMax : targetMax;
            }
            for (var i = 0; i < count; i++) {
                var s = i < sourceMax ? getTypeOfSymbol(source.parameters[i]) : getRestTypeOfSignature(source);
                var t = i < targetMax ? getTypeOfSymbol(target.parameters[i]) : getRestTypeOfSignature(target);
                callback(s, t);
            }
        }
        function createInferenceContext(typeParameters, inferUnionTypes) {
            var inferences = [];
            for (var _i = 0; _i < typeParameters.length; _i++) {
                var unused = typeParameters[_i];
                inferences.push({ primary: undefined, secondary: undefined, isFixed: false });
            }
            return {
                typeParameters: typeParameters,
                inferUnionTypes: inferUnionTypes,
                inferences: inferences,
                inferredTypes: new Array(typeParameters.length)
            };
        }
        function inferTypes(context, source, target) {
            var sourceStack;
            var targetStack;
            var depth = 0;
            var inferiority = 0;
            inferFromTypes(source, target);
            function isInProcess(source, target) {
                for (var i = 0; i < depth; i++) {
                    if (source === sourceStack[i] && target === targetStack[i]) {
                        return true;
                    }
                }
                return false;
            }
            function isWithinDepthLimit(type, stack) {
                if (depth >= 5) {
                    var target_2 = type.target;
                    var count = 0;
                    for (var i = 0; i < depth; i++) {
                        var t = stack[i];
                        if (t.flags & 4096 && t.target === target_2) {
                            count++;
                        }
                    }
                    return count < 5;
                }
                return true;
            }
            function inferFromTypes(source, target) {
                if (source === anyFunctionType) {
                    return;
                }
                if (target.flags & 512) {
                    var typeParameters = context.typeParameters;
                    for (var i = 0; i < typeParameters.length; i++) {
                        if (target === typeParameters[i]) {
                            var inferences = context.inferences[i];
                            if (!inferences.isFixed) {
                                var candidates = inferiority ?
                                    inferences.secondary || (inferences.secondary = []) :
                                    inferences.primary || (inferences.primary = []);
                                if (!ts.contains(candidates, source)) {
                                    candidates.push(source);
                                }
                            }
                            return;
                        }
                    }
                }
                else if (source.flags & 4096 && target.flags & 4096 && source.target === target.target) {
                    var sourceTypes = source.typeArguments;
                    var targetTypes = target.typeArguments;
                    for (var i = 0; i < sourceTypes.length; i++) {
                        inferFromTypes(sourceTypes[i], targetTypes[i]);
                    }
                }
                else if (target.flags & 16384) {
                    var targetTypes = target.types;
                    var typeParameterCount = 0;
                    var typeParameter;
                    for (var _i = 0; _i < targetTypes.length; _i++) {
                        var t = targetTypes[_i];
                        if (t.flags & 512 && ts.contains(context.typeParameters, t)) {
                            typeParameter = t;
                            typeParameterCount++;
                        }
                        else {
                            inferFromTypes(source, t);
                        }
                    }
                    if (typeParameterCount === 1) {
                        inferiority++;
                        inferFromTypes(source, typeParameter);
                        inferiority--;
                    }
                }
                else if (source.flags & 16384) {
                    var sourceTypes = source.types;
                    for (var _a = 0; _a < sourceTypes.length; _a++) {
                        var sourceType = sourceTypes[_a];
                        inferFromTypes(sourceType, target);
                    }
                }
                else if (source.flags & 48128 && (target.flags & (4096 | 8192) ||
                    (target.flags & 32768) && target.symbol && target.symbol.flags & (8192 | 2048))) {
                    if (!isInProcess(source, target) && isWithinDepthLimit(source, sourceStack) && isWithinDepthLimit(target, targetStack)) {
                        if (depth === 0) {
                            sourceStack = [];
                            targetStack = [];
                        }
                        sourceStack[depth] = source;
                        targetStack[depth] = target;
                        depth++;
                        inferFromProperties(source, target);
                        inferFromSignatures(source, target, 0);
                        inferFromSignatures(source, target, 1);
                        inferFromIndexTypes(source, target, 0, 0);
                        inferFromIndexTypes(source, target, 1, 1);
                        inferFromIndexTypes(source, target, 0, 1);
                        depth--;
                    }
                }
            }
            function inferFromProperties(source, target) {
                var properties = getPropertiesOfObjectType(target);
                for (var _i = 0; _i < properties.length; _i++) {
                    var targetProp = properties[_i];
                    var sourceProp = getPropertyOfObjectType(source, targetProp.name);
                    if (sourceProp) {
                        inferFromTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp));
                    }
                }
            }
            function inferFromSignatures(source, target, kind) {
                var sourceSignatures = getSignaturesOfType(source, kind);
                var targetSignatures = getSignaturesOfType(target, kind);
                var sourceLen = sourceSignatures.length;
                var targetLen = targetSignatures.length;
                var len = sourceLen < targetLen ? sourceLen : targetLen;
                for (var i = 0; i < len; i++) {
                    inferFromSignature(getErasedSignature(sourceSignatures[sourceLen - len + i]), getErasedSignature(targetSignatures[targetLen - len + i]));
                }
            }
            function inferFromSignature(source, target) {
                forEachMatchingParameterType(source, target, inferFromTypes);
                inferFromTypes(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target));
            }
            function inferFromIndexTypes(source, target, sourceKind, targetKind) {
                var targetIndexType = getIndexTypeOfType(target, targetKind);
                if (targetIndexType) {
                    var sourceIndexType = getIndexTypeOfType(source, sourceKind);
                    if (sourceIndexType) {
                        inferFromTypes(sourceIndexType, targetIndexType);
                    }
                }
            }
        }
        function getInferenceCandidates(context, index) {
            var inferences = context.inferences[index];
            return inferences.primary || inferences.secondary || emptyArray;
        }
        function getInferredType(context, index) {
            var inferredType = context.inferredTypes[index];
            var inferenceSucceeded;
            if (!inferredType) {
                var inferences = getInferenceCandidates(context, index);
                if (inferences.length) {
                    var unionOrSuperType = context.inferUnionTypes ? getUnionType(inferences) : getCommonSupertype(inferences);
                    inferredType = unionOrSuperType ? getWidenedType(unionOrSuperType) : unknownType;
                    inferenceSucceeded = !!unionOrSuperType;
                }
                else {
                    inferredType = emptyObjectType;
                    inferenceSucceeded = true;
                }
                if (inferenceSucceeded) {
                    var constraint = getConstraintOfTypeParameter(context.typeParameters[index]);
                    inferredType = constraint && !isTypeAssignableTo(inferredType, constraint) ? constraint : inferredType;
                }
                else if (context.failedTypeParameterIndex === undefined || context.failedTypeParameterIndex > index) {
                    context.failedTypeParameterIndex = index;
                }
                context.inferredTypes[index] = inferredType;
            }
            return inferredType;
        }
        function getInferredTypes(context) {
            for (var i = 0; i < context.inferredTypes.length; i++) {
                getInferredType(context, i);
            }
            return context.inferredTypes;
        }
        function hasAncestor(node, kind) {
            return ts.getAncestor(node, kind) !== undefined;
        }
        function getResolvedSymbol(node) {
            var links = getNodeLinks(node);
            if (!links.resolvedSymbol) {
                links.resolvedSymbol = (!ts.nodeIsMissing(node) && resolveName(node, node.text, 107455 | 1048576, ts.Diagnostics.Cannot_find_name_0, node)) || unknownSymbol;
            }
            return links.resolvedSymbol;
        }
        function isInTypeQuery(node) {
            while (node) {
                switch (node.kind) {
                    case 145:
                        return true;
                    case 65:
                    case 127:
                        node = node.parent;
                        continue;
                    default:
                        return false;
                }
            }
            ts.Debug.fail("should not get here");
        }
        function removeTypesFromUnionType(type, typeKind, isOfTypeKind, allowEmptyUnionResult) {
            if (type.flags & 16384) {
                var types = type.types;
                if (ts.forEach(types, function (t) { return !!(t.flags & typeKind) === isOfTypeKind; })) {
                    var narrowedType = getUnionType(ts.filter(types, function (t) { return !(t.flags & typeKind) === isOfTypeKind; }));
                    if (allowEmptyUnionResult || narrowedType !== emptyObjectType) {
                        return narrowedType;
                    }
                }
            }
            else if (allowEmptyUnionResult && !!(type.flags & typeKind) === isOfTypeKind) {
                return getUnionType(emptyArray);
            }
            return type;
        }
        function hasInitializer(node) {
            return !!(node.initializer || ts.isBindingPattern(node.parent) && hasInitializer(node.parent.parent));
        }
        function isVariableAssignedWithin(symbol, node) {
            var links = getNodeLinks(node);
            if (links.assignmentChecks) {
                var cachedResult = links.assignmentChecks[symbol.id];
                if (cachedResult !== undefined) {
                    return cachedResult;
                }
            }
            else {
                links.assignmentChecks = {};
            }
            return links.assignmentChecks[symbol.id] = isAssignedIn(node);
            function isAssignedInBinaryExpression(node) {
                if (node.operatorToken.kind >= 53 && node.operatorToken.kind <= 64) {
                    var n = node.left;
                    while (n.kind === 162) {
                        n = n.expression;
                    }
                    if (n.kind === 65 && getResolvedSymbol(n) === symbol) {
                        return true;
                    }
                }
                return ts.forEachChild(node, isAssignedIn);
            }
            function isAssignedInVariableDeclaration(node) {
                if (!ts.isBindingPattern(node.name) && getSymbolOfNode(node) === symbol && hasInitializer(node)) {
                    return true;
                }
                return ts.forEachChild(node, isAssignedIn);
            }
            function isAssignedIn(node) {
                switch (node.kind) {
                    case 170:
                        return isAssignedInBinaryExpression(node);
                    case 199:
                    case 153:
                        return isAssignedInVariableDeclaration(node);
                    case 151:
                    case 152:
                    case 154:
                    case 155:
                    case 156:
                    case 157:
                    case 158:
                    case 159:
                    case 161:
                    case 162:
                    case 168:
                    case 165:
                    case 166:
                    case 167:
                    case 169:
                    case 171:
                    case 174:
                    case 180:
                    case 181:
                    case 183:
                    case 184:
                    case 185:
                    case 186:
                    case 187:
                    case 188:
                    case 189:
                    case 192:
                    case 193:
                    case 194:
                    case 221:
                    case 222:
                    case 195:
                    case 196:
                    case 197:
                    case 224:
                        return ts.forEachChild(node, isAssignedIn);
                }
                return false;
            }
        }
        function resolveLocation(node) {
            var containerNodes = [];
            for (var parent_3 = node.parent; parent_3; parent_3 = parent_3.parent) {
                if ((ts.isExpression(parent_3) || ts.isObjectLiteralMethod(node)) &&
                    isContextSensitive(parent_3)) {
                    containerNodes.unshift(parent_3);
                }
            }
            ts.forEach(containerNodes, function (node) { getTypeOfNode(node); });
        }
        function getSymbolAtLocation(node) {
            resolveLocation(node);
            return getSymbolInfo(node);
        }
        function getTypeAtLocation(node) {
            resolveLocation(node);
            return getTypeOfNode(node);
        }
        function getTypeOfSymbolAtLocation(symbol, node) {
            resolveLocation(node);
            return getNarrowedTypeOfSymbol(symbol, node);
        }
        function getNarrowedTypeOfSymbol(symbol, node) {
            var type = getTypeOfSymbol(symbol);
            if (node && symbol.flags & 3 && type.flags & (1 | 48128 | 16384 | 512)) {
                loop: while (node.parent) {
                    var child = node;
                    node = node.parent;
                    var narrowedType = type;
                    switch (node.kind) {
                        case 184:
                            if (child !== node.expression) {
                                narrowedType = narrowType(type, node.expression, child === node.thenStatement);
                            }
                            break;
                        case 171:
                            if (child !== node.condition) {
                                narrowedType = narrowType(type, node.condition, child === node.whenTrue);
                            }
                            break;
                        case 170:
                            if (child === node.right) {
                                if (node.operatorToken.kind === 48) {
                                    narrowedType = narrowType(type, node.left, true);
                                }
                                else if (node.operatorToken.kind === 49) {
                                    narrowedType = narrowType(type, node.left, false);
                                }
                            }
                            break;
                        case 228:
                        case 206:
                        case 201:
                        case 135:
                        case 134:
                        case 137:
                        case 138:
                        case 136:
                            break loop;
                    }
                    if (narrowedType !== type) {
                        if (isVariableAssignedWithin(symbol, node)) {
                            break;
                        }
                        type = narrowedType;
                    }
                }
            }
            return type;
            function narrowTypeByEquality(type, expr, assumeTrue) {
                if (expr.left.kind !== 166 || expr.right.kind !== 8) {
                    return type;
                }
                var left = expr.left;
                var right = expr.right;
                if (left.expression.kind !== 65 || getResolvedSymbol(left.expression) !== symbol) {
                    return type;
                }
                var typeInfo = primitiveTypeInfo[right.text];
                if (expr.operatorToken.kind === 31) {
                    assumeTrue = !assumeTrue;
                }
                if (assumeTrue) {
                    if (!typeInfo) {
                        return removeTypesFromUnionType(type, 258 | 132 | 8 | 1048576, true, false);
                    }
                    if (isTypeSubtypeOf(typeInfo.type, type)) {
                        return typeInfo.type;
                    }
                    return removeTypesFromUnionType(type, typeInfo.flags, false, false);
                }
                else {
                    if (typeInfo) {
                        return removeTypesFromUnionType(type, typeInfo.flags, true, false);
                    }
                    return type;
                }
            }
            function narrowTypeByAnd(type, expr, assumeTrue) {
                if (assumeTrue) {
                    return narrowType(narrowType(type, expr.left, true), expr.right, true);
                }
                else {
                    return getUnionType([
                        narrowType(type, expr.left, false),
                        narrowType(narrowType(type, expr.left, true), expr.right, false)
                    ]);
                }
            }
            function narrowTypeByOr(type, expr, assumeTrue) {
                if (assumeTrue) {
                    return getUnionType([
                        narrowType(type, expr.left, true),
                        narrowType(narrowType(type, expr.left, false), expr.right, true)
                    ]);
                }
                else {
                    return narrowType(narrowType(type, expr.left, false), expr.right, false);
                }
            }
            function narrowTypeByInstanceof(type, expr, assumeTrue) {
                if (type.flags & 1 || !assumeTrue || expr.left.kind !== 65 || getResolvedSymbol(expr.left) !== symbol) {
                    return type;
                }
                var rightType = checkExpression(expr.right);
                if (!isTypeSubtypeOf(rightType, globalFunctionType)) {
                    return type;
                }
                var targetType;
                var prototypeProperty = getPropertyOfType(rightType, "prototype");
                if (prototypeProperty) {
                    var prototypePropertyType = getTypeOfSymbol(prototypeProperty);
                    if (prototypePropertyType !== anyType) {
                        targetType = prototypePropertyType;
                    }
                }
                if (!targetType) {
                    var constructSignatures;
                    if (rightType.flags & 2048) {
                        constructSignatures = resolveDeclaredMembers(rightType).declaredConstructSignatures;
                    }
                    else if (rightType.flags & 32768) {
                        constructSignatures = getSignaturesOfType(rightType, 1);
                    }
                    if (constructSignatures && constructSignatures.length) {
                        targetType = getUnionType(ts.map(constructSignatures, function (signature) { return getReturnTypeOfSignature(getErasedSignature(signature)); }));
                    }
                }
                if (targetType) {
                    if (isTypeSubtypeOf(targetType, type)) {
                        return targetType;
                    }
                    if (type.flags & 16384) {
                        return getUnionType(ts.filter(type.types, function (t) { return isTypeSubtypeOf(t, targetType); }));
                    }
                }
                return type;
            }
            function narrowType(type, expr, assumeTrue) {
                switch (expr.kind) {
                    case 162:
                        return narrowType(type, expr.expression, assumeTrue);
                    case 170:
                        var operator = expr.operatorToken.kind;
                        if (operator === 30 || operator === 31) {
                            return narrowTypeByEquality(type, expr, assumeTrue);
                        }
                        else if (operator === 48) {
                            return narrowTypeByAnd(type, expr, assumeTrue);
                        }
                        else if (operator === 49) {
                            return narrowTypeByOr(type, expr, assumeTrue);
                        }
                        else if (operator === 87) {
                            return narrowTypeByInstanceof(type, expr, assumeTrue);
                        }
                        break;
                    case 168:
                        if (expr.operator === 46) {
                            return narrowType(type, expr.operand, !assumeTrue);
                        }
                        break;
                }
                return type;
            }
        }
        function checkIdentifier(node) {
            var symbol = getResolvedSymbol(node);
            if (symbol === argumentsSymbol && ts.getContainingFunction(node).kind === 164 && languageVersion < 2) {
                error(node, ts.Diagnostics.The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression);
            }
            if (symbol.flags & 8388608 && !isInTypeQuery(node) && !isConstEnumOrConstEnumOnlyModule(resolveAlias(symbol))) {
                markAliasSymbolAsReferenced(symbol);
            }
            checkCollisionWithCapturedSuperVariable(node, node);
            checkCollisionWithCapturedThisVariable(node, node);
            checkBlockScopedBindingCapturedInLoop(node, symbol);
            return getNarrowedTypeOfSymbol(getExportSymbolOfValueSymbolIfExported(symbol), node);
        }
        function isInsideFunction(node, threshold) {
            var current = node;
            while (current && current !== threshold) {
                if (ts.isFunctionLike(current)) {
                    return true;
                }
                current = current.parent;
            }
            return false;
        }
        function checkBlockScopedBindingCapturedInLoop(node, symbol) {
            if (languageVersion >= 2 ||
                (symbol.flags & 2) === 0 ||
                symbol.valueDeclaration.parent.kind === 224) {
                return;
            }
            var container = symbol.valueDeclaration;
            while (container.kind !== 200) {
                container = container.parent;
            }
            container = container.parent;
            if (container.kind === 181) {
                container = container.parent;
            }
            var inFunction = isInsideFunction(node.parent, container);
            var current = container;
            while (current && !ts.nodeStartsNewLexicalEnvironment(current)) {
                if (isIterationStatement(current, false)) {
                    if (inFunction) {
                        grammarErrorOnFirstToken(current, ts.Diagnostics.Loop_contains_block_scoped_variable_0_referenced_by_a_function_in_the_loop_This_is_only_supported_in_ECMAScript_6_or_higher, ts.declarationNameToString(node));
                    }
                    getNodeLinks(symbol.valueDeclaration).flags |= 256;
                    break;
                }
                current = current.parent;
            }
        }
        function captureLexicalThis(node, container) {
            var classNode = container.parent && container.parent.kind === 202 ? container.parent : undefined;
            getNodeLinks(node).flags |= 2;
            if (container.kind === 133 || container.kind === 136) {
                getNodeLinks(classNode).flags |= 4;
            }
            else {
                getNodeLinks(container).flags |= 4;
            }
        }
        function checkThisExpression(node) {
            var container = ts.getThisContainer(node, true);
            var needToCaptureLexicalThis = false;
            if (container.kind === 164) {
                container = ts.getThisContainer(container, false);
                needToCaptureLexicalThis = (languageVersion < 2);
            }
            switch (container.kind) {
                case 206:
                    error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_module_or_namespace_body);
                    break;
                case 205:
                    error(node, ts.Diagnostics.this_cannot_be_referenced_in_current_location);
                    break;
                case 136:
                    if (isInConstructorArgumentInitializer(node, container)) {
                        error(node, ts.Diagnostics.this_cannot_be_referenced_in_constructor_arguments);
                    }
                    break;
                case 133:
                case 132:
                    if (container.flags & 128) {
                        error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_static_property_initializer);
                    }
                    break;
                case 128:
                    error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_computed_property_name);
                    break;
            }
            if (needToCaptureLexicalThis) {
                captureLexicalThis(node, container);
            }
            var classNode = container.parent && container.parent.kind === 202 ? container.parent : undefined;
            if (classNode) {
                var symbol = getSymbolOfNode(classNode);
                return container.flags & 128 ? getTypeOfSymbol(symbol) : getDeclaredTypeOfSymbol(symbol);
            }
            return anyType;
        }
        function isInConstructorArgumentInitializer(node, constructorDecl) {
            for (var n = node; n && n !== constructorDecl; n = n.parent) {
                if (n.kind === 130) {
                    return true;
                }
            }
            return false;
        }
        function checkSuperExpression(node) {
            var isCallExpression = node.parent.kind === 158 && node.parent.expression === node;
            var enclosingClass = ts.getAncestor(node, 202);
            var baseClass;
            if (enclosingClass && ts.getClassExtendsHeritageClauseElement(enclosingClass)) {
                var classType = getDeclaredTypeOfSymbol(getSymbolOfNode(enclosingClass));
                var baseTypes = getBaseTypes(classType);
                baseClass = baseTypes.length && baseTypes[0];
            }
            if (!baseClass) {
                error(node, ts.Diagnostics.super_can_only_be_referenced_in_a_derived_class);
                return unknownType;
            }
            var container = ts.getSuperContainer(node, true);
            if (container) {
                var canUseSuperExpression = false;
                var needToCaptureLexicalThis;
                if (isCallExpression) {
                    canUseSuperExpression = container.kind === 136;
                }
                else {
                    needToCaptureLexicalThis = false;
                    while (container && container.kind === 164) {
                        container = ts.getSuperContainer(container, true);
                        needToCaptureLexicalThis = languageVersion < 2;
                    }
                    if (container && container.parent && container.parent.kind === 202) {
                        if (container.flags & 128) {
                            canUseSuperExpression =
                                container.kind === 135 ||
                                    container.kind === 134 ||
                                    container.kind === 137 ||
                                    container.kind === 138;
                        }
                        else {
                            canUseSuperExpression =
                                container.kind === 135 ||
                                    container.kind === 134 ||
                                    container.kind === 137 ||
                                    container.kind === 138 ||
                                    container.kind === 133 ||
                                    container.kind === 132 ||
                                    container.kind === 136;
                        }
                    }
                }
                if (canUseSuperExpression) {
                    var returnType;
                    if ((container.flags & 128) || isCallExpression) {
                        getNodeLinks(node).flags |= 32;
                        returnType = getTypeOfSymbol(baseClass.symbol);
                    }
                    else {
                        getNodeLinks(node).flags |= 16;
                        returnType = baseClass;
                    }
                    if (container.kind === 136 && isInConstructorArgumentInitializer(node, container)) {
                        error(node, ts.Diagnostics.super_cannot_be_referenced_in_constructor_arguments);
                        returnType = unknownType;
                    }
                    if (!isCallExpression && needToCaptureLexicalThis) {
                        captureLexicalThis(node.parent, container);
                    }
                    return returnType;
                }
            }
            if (container && container.kind === 128) {
                error(node, ts.Diagnostics.super_cannot_be_referenced_in_a_computed_property_name);
            }
            else if (isCallExpression) {
                error(node, ts.Diagnostics.Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors);
            }
            else {
                error(node, ts.Diagnostics.super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class);
            }
            return unknownType;
        }
        function getContextuallyTypedParameterType(parameter) {
            if (isFunctionExpressionOrArrowFunction(parameter.parent)) {
                var func = parameter.parent;
                if (isContextSensitive(func)) {
                    var contextualSignature = getContextualSignature(func);
                    if (contextualSignature) {
                        var funcHasRestParameters = ts.hasRestParameters(func);
                        var len = func.parameters.length - (funcHasRestParameters ? 1 : 0);
                        var indexOfParameter = ts.indexOf(func.parameters, parameter);
                        if (indexOfParameter < len) {
                            return getTypeAtPosition(contextualSignature, indexOfParameter);
                        }
                        if (indexOfParameter === (func.parameters.length - 1) &&
                            funcHasRestParameters && contextualSignature.hasRestParameter && func.parameters.length >= contextualSignature.parameters.length) {
                            return getTypeOfSymbol(ts.lastOrUndefined(contextualSignature.parameters));
                        }
                    }
                }
            }
            return undefined;
        }
        function getContextualTypeForInitializerExpression(node) {
            var declaration = node.parent;
            if (node === declaration.initializer) {
                if (declaration.type) {
                    return getTypeFromTypeNode(declaration.type);
                }
                if (declaration.kind === 130) {
                    var type = getContextuallyTypedParameterType(declaration);
                    if (type) {
                        return type;
                    }
                }
                if (ts.isBindingPattern(declaration.name)) {
                    return getTypeFromBindingPattern(declaration.name);
                }
            }
            return undefined;
        }
        function getContextualTypeForReturnExpression(node) {
            var func = ts.getContainingFunction(node);
            if (func) {
                if (func.type || func.kind === 136 || func.kind === 137 && getSetAccessorTypeAnnotationNode(ts.getDeclarationOfKind(func.symbol, 138))) {
                    return getReturnTypeOfSignature(getSignatureFromDeclaration(func));
                }
                var signature = getContextualSignatureForFunctionLikeDeclaration(func);
                if (signature) {
                    return getReturnTypeOfSignature(signature);
                }
            }
            return undefined;
        }
        function getContextualTypeForArgument(callTarget, arg) {
            var args = getEffectiveCallArguments(callTarget);
            var argIndex = ts.indexOf(args, arg);
            if (argIndex >= 0) {
                var signature = getResolvedSignature(callTarget);
                return getTypeAtPosition(signature, argIndex);
            }
            return undefined;
        }
        function getContextualTypeForSubstitutionExpression(template, substitutionExpression) {
            if (template.parent.kind === 160) {
                return getContextualTypeForArgument(template.parent, substitutionExpression);
            }
            return undefined;
        }
        function getContextualTypeForBinaryOperand(node) {
            var binaryExpression = node.parent;
            var operator = binaryExpression.operatorToken.kind;
            if (operator >= 53 && operator <= 64) {
                if (node === binaryExpression.right) {
                    return checkExpression(binaryExpression.left);
                }
            }
            else if (operator === 49) {
                var type = getContextualType(binaryExpression);
                if (!type && node === binaryExpression.right) {
                    type = checkExpression(binaryExpression.left);
                }
                return type;
            }
            return undefined;
        }
        function applyToContextualType(type, mapper) {
            if (!(type.flags & 16384)) {
                return mapper(type);
            }
            var types = type.types;
            var mappedType;
            var mappedTypes;
            for (var _i = 0; _i < types.length; _i++) {
                var current = types[_i];
                var t = mapper(current);
                if (t) {
                    if (!mappedType) {
                        mappedType = t;
                    }
                    else if (!mappedTypes) {
                        mappedTypes = [mappedType, t];
                    }
                    else {
                        mappedTypes.push(t);
                    }
                }
            }
            return mappedTypes ? getUnionType(mappedTypes) : mappedType;
        }
        function getTypeOfPropertyOfContextualType(type, name) {
            return applyToContextualType(type, function (t) {
                var prop = getPropertyOfObjectType(t, name);
                return prop ? getTypeOfSymbol(prop) : undefined;
            });
        }
        function getIndexTypeOfContextualType(type, kind) {
            return applyToContextualType(type, function (t) { return getIndexTypeOfObjectOrUnionType(t, kind); });
        }
        function contextualTypeIsTupleLikeType(type) {
            return !!(type.flags & 16384 ? ts.forEach(type.types, isTupleLikeType) : isTupleLikeType(type));
        }
        function contextualTypeHasIndexSignature(type, kind) {
            return !!(type.flags & 16384 ? ts.forEach(type.types, function (t) { return getIndexTypeOfObjectOrUnionType(t, kind); }) : getIndexTypeOfObjectOrUnionType(type, kind));
        }
        function getContextualTypeForObjectLiteralMethod(node) {
            ts.Debug.assert(ts.isObjectLiteralMethod(node));
            if (isInsideWithStatementBody(node)) {
                return undefined;
            }
            return getContextualTypeForObjectLiteralElement(node);
        }
        function getContextualTypeForObjectLiteralElement(element) {
            var objectLiteral = element.parent;
            var type = getContextualType(objectLiteral);
            if (type) {
                if (!ts.hasDynamicName(element)) {
                    var symbolName = getSymbolOfNode(element).name;
                    var propertyType = getTypeOfPropertyOfContextualType(type, symbolName);
                    if (propertyType) {
                        return propertyType;
                    }
                }
                return isNumericName(element.name) && getIndexTypeOfContextualType(type, 1) ||
                    getIndexTypeOfContextualType(type, 0);
            }
            return undefined;
        }
        function getContextualTypeForElementExpression(node) {
            var arrayLiteral = node.parent;
            var type = getContextualType(arrayLiteral);
            if (type) {
                var index = ts.indexOf(arrayLiteral.elements, node);
                return getTypeOfPropertyOfContextualType(type, "" + index)
                    || getIndexTypeOfContextualType(type, 1)
                    || (languageVersion >= 2 ? checkIteratedType(type, undefined) : undefined);
            }
            return undefined;
        }
        function getContextualTypeForConditionalOperand(node) {
            var conditional = node.parent;
            return node === conditional.whenTrue || node === conditional.whenFalse ? getContextualType(conditional) : undefined;
        }
        function getContextualType(node) {
            if (isInsideWithStatementBody(node)) {
                return undefined;
            }
            if (node.contextualType) {
                return node.contextualType;
            }
            var parent = node.parent;
            switch (parent.kind) {
                case 199:
                case 130:
                case 133:
                case 132:
                case 153:
                    return getContextualTypeForInitializerExpression(node);
                case 164:
                case 192:
                    return getContextualTypeForReturnExpression(node);
                case 158:
                case 159:
                    return getContextualTypeForArgument(parent, node);
                case 161:
                    return getTypeFromTypeNode(parent.type);
                case 170:
                    return getContextualTypeForBinaryOperand(node);
                case 225:
                    return getContextualTypeForObjectLiteralElement(parent);
                case 154:
                    return getContextualTypeForElementExpression(node);
                case 171:
                    return getContextualTypeForConditionalOperand(node);
                case 178:
                    ts.Debug.assert(parent.parent.kind === 172);
                    return getContextualTypeForSubstitutionExpression(parent.parent, node);
                case 162:
                    return getContextualType(parent);
            }
            return undefined;
        }
        function getNonGenericSignature(type) {
            var signatures = getSignaturesOfObjectOrUnionType(type, 0);
            if (signatures.length === 1) {
                var signature = signatures[0];
                if (!signature.typeParameters) {
                    return signature;
                }
            }
        }
        function isFunctionExpressionOrArrowFunction(node) {
            return node.kind === 163 || node.kind === 164;
        }
        function getContextualSignatureForFunctionLikeDeclaration(node) {
            return isFunctionExpressionOrArrowFunction(node) ? getContextualSignature(node) : undefined;
        }
        function getContextualSignature(node) {
            ts.Debug.assert(node.kind !== 135 || ts.isObjectLiteralMethod(node));
            var type = ts.isObjectLiteralMethod(node)
                ? getContextualTypeForObjectLiteralMethod(node)
                : getContextualType(node);
            if (!type) {
                return undefined;
            }
            if (!(type.flags & 16384)) {
                return getNonGenericSignature(type);
            }
            var signatureList;
            var types = type.types;
            for (var _i = 0; _i < types.length; _i++) {
                var current = types[_i];
                if (signatureList &&
                    getSignaturesOfObjectOrUnionType(current, 0).length > 1) {
                    return undefined;
                }
                var signature = getNonGenericSignature(current);
                if (signature) {
                    if (!signatureList) {
                        signatureList = [signature];
                    }
                    else if (!compareSignatures(signatureList[0], signature, false, compareTypes)) {
                        return undefined;
                    }
                    else {
                        signatureList.push(signature);
                    }
                }
            }
            var result;
            if (signatureList) {
                result = cloneSignature(signatureList[0]);
                result.resolvedReturnType = undefined;
                result.unionSignatures = signatureList;
            }
            return result;
        }
        function isInferentialContext(mapper) {
            return mapper && mapper !== identityMapper;
        }
        function isAssignmentTarget(node) {
            var parent = node.parent;
            if (parent.kind === 170 && parent.operatorToken.kind === 53 && parent.left === node) {
                return true;
            }
            if (parent.kind === 225) {
                return isAssignmentTarget(parent.parent);
            }
            if (parent.kind === 154) {
                return isAssignmentTarget(parent);
            }
            return false;
        }
        function checkSpreadElementExpression(node, contextualMapper) {
            var arrayOrIterableType = checkExpressionCached(node.expression, contextualMapper);
            return checkIteratedTypeOrElementType(arrayOrIterableType, node.expression, false);
        }
        function checkArrayLiteral(node, contextualMapper) {
            var elements = node.elements;
            if (!elements.length) {
                return createArrayType(undefinedType);
            }
            var hasSpreadElement = false;
            var elementTypes = [];
            var inDestructuringPattern = isAssignmentTarget(node);
            for (var _i = 0; _i < elements.length; _i++) {
                var e = elements[_i];
                if (inDestructuringPattern && e.kind === 174) {
                    var restArrayType = checkExpression(e.expression, contextualMapper);
                    var restElementType = getIndexTypeOfType(restArrayType, 1) ||
                        (languageVersion >= 2 ? checkIteratedType(restArrayType, undefined) : undefined);
                    if (restElementType) {
                        elementTypes.push(restElementType);
                    }
                }
                else {
                    var type = checkExpression(e, contextualMapper);
                    elementTypes.push(type);
                }
                hasSpreadElement = hasSpreadElement || e.kind === 174;
            }
            if (!hasSpreadElement) {
                var contextualType = getContextualType(node);
                if (contextualType && contextualTypeIsTupleLikeType(contextualType) || inDestructuringPattern) {
                    return createTupleType(elementTypes);
                }
            }
            return createArrayType(getUnionType(elementTypes));
        }
        function isNumericName(name) {
            return name.kind === 128 ? isNumericComputedName(name) : isNumericLiteralName(name.text);
        }
        function isNumericComputedName(name) {
            return allConstituentTypesHaveKind(checkComputedPropertyName(name), 1 | 132);
        }
        function isNumericLiteralName(name) {
            return (+name).toString() === name;
        }
        function checkComputedPropertyName(node) {
            var links = getNodeLinks(node.expression);
            if (!links.resolvedType) {
                links.resolvedType = checkExpression(node.expression);
                if (!allConstituentTypesHaveKind(links.resolvedType, 1 | 132 | 258 | 1048576)) {
                    error(node, ts.Diagnostics.A_computed_property_name_must_be_of_type_string_number_symbol_or_any);
                }
                else {
                    checkThatExpressionIsProperSymbolReference(node.expression, links.resolvedType, true);
                }
            }
            return links.resolvedType;
        }
        function checkObjectLiteral(node, contextualMapper) {
            checkGrammarObjectLiteralExpression(node);
            var propertiesTable = {};
            var propertiesArray = [];
            var contextualType = getContextualType(node);
            var typeFlags;
            for (var _i = 0, _a = node.properties; _i < _a.length; _i++) {
                var memberDecl = _a[_i];
                var member = memberDecl.symbol;
                if (memberDecl.kind === 225 ||
                    memberDecl.kind === 226 ||
                    ts.isObjectLiteralMethod(memberDecl)) {
                    var type = void 0;
                    if (memberDecl.kind === 225) {
                        type = checkPropertyAssignment(memberDecl, contextualMapper);
                    }
                    else if (memberDecl.kind === 135) {
                        type = checkObjectLiteralMethod(memberDecl, contextualMapper);
                    }
                    else {
                        ts.Debug.assert(memberDecl.kind === 226);
                        type = checkExpression(memberDecl.name, contextualMapper);
                    }
                    typeFlags |= type.flags;
                    var prop = createSymbol(4 | 67108864 | member.flags, member.name);
                    prop.declarations = member.declarations;
                    prop.parent = member.parent;
                    if (member.valueDeclaration) {
                        prop.valueDeclaration = member.valueDeclaration;
                    }
                    prop.type = type;
                    prop.target = member;
                    member = prop;
                }
                else {
                    ts.Debug.assert(memberDecl.kind === 137 || memberDecl.kind === 138);
                    checkAccessorDeclaration(memberDecl);
                }
                if (!ts.hasDynamicName(memberDecl)) {
                    propertiesTable[member.name] = member;
                }
                propertiesArray.push(member);
            }
            var stringIndexType = getIndexType(0);
            var numberIndexType = getIndexType(1);
            var result = createAnonymousType(node.symbol, propertiesTable, emptyArray, emptyArray, stringIndexType, numberIndexType);
            result.flags |= 131072 | 524288 | (typeFlags & 262144);
            return result;
            function getIndexType(kind) {
                if (contextualType && contextualTypeHasIndexSignature(contextualType, kind)) {
                    var propTypes = [];
                    for (var i = 0; i < propertiesArray.length; i++) {
                        var propertyDecl = node.properties[i];
                        if (kind === 0 || isNumericName(propertyDecl.name)) {
                            var type = getTypeOfSymbol(propertiesArray[i]);
                            if (!ts.contains(propTypes, type)) {
                                propTypes.push(type);
                            }
                        }
                    }
                    var result_1 = propTypes.length ? getUnionType(propTypes) : undefinedType;
                    typeFlags |= result_1.flags;
                    return result_1;
                }
                return undefined;
            }
        }
        function getDeclarationKindFromSymbol(s) {
            return s.valueDeclaration ? s.valueDeclaration.kind : 133;
        }
        function getDeclarationFlagsFromSymbol(s) {
            return s.valueDeclaration ? ts.getCombinedNodeFlags(s.valueDeclaration) : s.flags & 134217728 ? 16 | 128 : 0;
        }
        function checkClassPropertyAccess(node, left, type, prop) {
            var flags = getDeclarationFlagsFromSymbol(prop);
            if (!(flags & (32 | 64))) {
                return;
            }
            var enclosingClassDeclaration = ts.getAncestor(node, 202);
            var enclosingClass = enclosingClassDeclaration ? getDeclaredTypeOfSymbol(getSymbolOfNode(enclosingClassDeclaration)) : undefined;
            var declaringClass = getDeclaredTypeOfSymbol(prop.parent);
            if (flags & 32) {
                if (declaringClass !== enclosingClass) {
                    error(node, ts.Diagnostics.Property_0_is_private_and_only_accessible_within_class_1, symbolToString(prop), typeToString(declaringClass));
                }
                return;
            }
            if (left.kind === 91) {
                return;
            }
            if (!enclosingClass || !hasBaseType(enclosingClass, declaringClass)) {
                error(node, ts.Diagnostics.Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses, symbolToString(prop), typeToString(declaringClass));
                return;
            }
            if (flags & 128) {
                return;
            }
            if (!(getTargetType(type).flags & (1024 | 2048) && hasBaseType(type, enclosingClass))) {
                error(node, ts.Diagnostics.Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1, symbolToString(prop), typeToString(enclosingClass));
            }
        }
        function checkPropertyAccessExpression(node) {
            return checkPropertyAccessExpressionOrQualifiedName(node, node.expression, node.name);
        }
        function checkQualifiedName(node) {
            return checkPropertyAccessExpressionOrQualifiedName(node, node.left, node.right);
        }
        function checkPropertyAccessExpressionOrQualifiedName(node, left, right) {
            var type = checkExpressionOrQualifiedName(left);
            if (type === unknownType)
                return type;
            if (type !== anyType) {
                var apparentType = getApparentType(getWidenedType(type));
                if (apparentType === unknownType) {
                    return unknownType;
                }
                var prop = getPropertyOfType(apparentType, right.text);
                if (!prop) {
                    if (right.text) {
                        error(right, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.declarationNameToString(right), typeToString(type));
                    }
                    return unknownType;
                }
                getNodeLinks(node).resolvedSymbol = prop;
                if (prop.parent && prop.parent.flags & 32) {
                    if (left.kind === 91 && getDeclarationKindFromSymbol(prop) !== 135) {
                        error(right, ts.Diagnostics.Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword);
                    }
                    else {
                        checkClassPropertyAccess(node, left, type, prop);
                    }
                }
                return getTypeOfSymbol(prop);
            }
            return anyType;
        }
        function isValidPropertyAccess(node, propertyName) {
            var left = node.kind === 156
                ? node.expression
                : node.left;
            var type = checkExpressionOrQualifiedName(left);
            if (type !== unknownType && type !== anyType) {
                var prop = getPropertyOfType(getWidenedType(type), propertyName);
                if (prop && prop.parent && prop.parent.flags & 32) {
                    if (left.kind === 91 && getDeclarationKindFromSymbol(prop) !== 135) {
                        return false;
                    }
                    else {
                        var modificationCount = diagnostics.getModificationCount();
                        checkClassPropertyAccess(node, left, type, prop);
                        return diagnostics.getModificationCount() === modificationCount;
                    }
                }
            }
            return true;
        }
        function checkIndexedAccess(node) {
            if (!node.argumentExpression) {
                var sourceFile = getSourceFile(node);
                if (node.parent.kind === 159 && node.parent.expression === node) {
                    var start = ts.skipTrivia(sourceFile.text, node.expression.end);
                    var end = node.end;
                    grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead);
                }
                else {
                    var start = node.end - "]".length;
                    var end = node.end;
                    grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Expression_expected);
                }
            }
            var objectType = getApparentType(checkExpression(node.expression));
            var indexType = node.argumentExpression ? checkExpression(node.argumentExpression) : unknownType;
            if (objectType === unknownType) {
                return unknownType;
            }
            var isConstEnum = isConstEnumObjectType(objectType);
            if (isConstEnum &&
                (!node.argumentExpression || node.argumentExpression.kind !== 8)) {
                error(node.argumentExpression, ts.Diagnostics.A_const_enum_member_can_only_be_accessed_using_a_string_literal);
                return unknownType;
            }
            if (node.argumentExpression) {
                var name_6 = getPropertyNameForIndexedAccess(node.argumentExpression, indexType);
                if (name_6 !== undefined) {
                    var prop = getPropertyOfType(objectType, name_6);
                    if (prop) {
                        getNodeLinks(node).resolvedSymbol = prop;
                        return getTypeOfSymbol(prop);
                    }
                    else if (isConstEnum) {
                        error(node.argumentExpression, ts.Diagnostics.Property_0_does_not_exist_on_const_enum_1, name_6, symbolToString(objectType.symbol));
                        return unknownType;
                    }
                }
            }
            if (allConstituentTypesHaveKind(indexType, 1 | 258 | 132 | 1048576)) {
                if (allConstituentTypesHaveKind(indexType, 1 | 132)) {
                    var numberIndexType = getIndexTypeOfType(objectType, 1);
                    if (numberIndexType) {
                        return numberIndexType;
                    }
                }
                var stringIndexType = getIndexTypeOfType(objectType, 0);
                if (stringIndexType) {
                    return stringIndexType;
                }
                if (compilerOptions.noImplicitAny && !compilerOptions.suppressImplicitAnyIndexErrors && objectType !== anyType) {
                    error(node, ts.Diagnostics.Index_signature_of_object_type_implicitly_has_an_any_type);
                }
                return anyType;
            }
            error(node, ts.Diagnostics.An_index_expression_argument_must_be_of_type_string_number_symbol_or_any);
            return unknownType;
        }
        function getPropertyNameForIndexedAccess(indexArgumentExpression, indexArgumentType) {
            if (indexArgumentExpression.kind === 8 || indexArgumentExpression.kind === 7) {
                return indexArgumentExpression.text;
            }
            if (checkThatExpressionIsProperSymbolReference(indexArgumentExpression, indexArgumentType, false)) {
                var rightHandSideName = indexArgumentExpression.name.text;
                return ts.getPropertyNameForKnownSymbolName(rightHandSideName);
            }
            return undefined;
        }
        function checkThatExpressionIsProperSymbolReference(expression, expressionType, reportError) {
            if (expressionType === unknownType) {
                return false;
            }
            if (!ts.isWellKnownSymbolSyntactically(expression)) {
                return false;
            }
            if ((expressionType.flags & 1048576) === 0) {
                if (reportError) {
                    error(expression, ts.Diagnostics.A_computed_property_name_of_the_form_0_must_be_of_type_symbol, ts.getTextOfNode(expression));
                }
                return false;
            }
            var leftHandSide = expression.expression;
            var leftHandSideSymbol = getResolvedSymbol(leftHandSide);
            if (!leftHandSideSymbol) {
                return false;
            }
            var globalESSymbol = getGlobalESSymbolConstructorSymbol();
            if (!globalESSymbol) {
                return false;
            }
            if (leftHandSideSymbol !== globalESSymbol) {
                if (reportError) {
                    error(leftHandSide, ts.Diagnostics.Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object);
                }
                return false;
            }
            return true;
        }
        function resolveUntypedCall(node) {
            if (node.kind === 160) {
                checkExpression(node.template);
            }
            else {
                ts.forEach(node.arguments, function (argument) {
                    checkExpression(argument);
                });
            }
            return anySignature;
        }
        function resolveErrorCall(node) {
            resolveUntypedCall(node);
            return unknownSignature;
        }
        function reorderCandidates(signatures, result) {
            var lastParent;
            var lastSymbol;
            var cutoffIndex = 0;
            var index;
            var specializedIndex = -1;
            var spliceIndex;
            ts.Debug.assert(!result.length);
            for (var _i = 0; _i < signatures.length; _i++) {
                var signature = signatures[_i];
                var symbol = signature.declaration && getSymbolOfNode(signature.declaration);
                var parent_4 = signature.declaration && signature.declaration.parent;
                if (!lastSymbol || symbol === lastSymbol) {
                    if (lastParent && parent_4 === lastParent) {
                        index++;
                    }
                    else {
                        lastParent = parent_4;
                        index = cutoffIndex;
                    }
                }
                else {
                    index = cutoffIndex = result.length;
                    lastParent = parent_4;
                }
                lastSymbol = symbol;
                if (signature.hasStringLiterals) {
                    specializedIndex++;
                    spliceIndex = specializedIndex;
                    cutoffIndex++;
                }
                else {
                    spliceIndex = index;
                }
                result.splice(spliceIndex, 0, signature);
            }
        }
        function getSpreadArgumentIndex(args) {
            for (var i = 0; i < args.length; i++) {
                if (args[i].kind === 174) {
                    return i;
                }
            }
            return -1;
        }
        function hasCorrectArity(node, args, signature) {
            var adjustedArgCount;
            var typeArguments;
            var callIsIncomplete;
            if (node.kind === 160) {
                var tagExpression = node;
                adjustedArgCount = args.length;
                typeArguments = undefined;
                if (tagExpression.template.kind === 172) {
                    var templateExpression = tagExpression.template;
                    var lastSpan = ts.lastOrUndefined(templateExpression.templateSpans);
                    ts.Debug.assert(lastSpan !== undefined);
                    callIsIncomplete = ts.nodeIsMissing(lastSpan.literal) || !!lastSpan.literal.isUnterminated;
                }
                else {
                    var templateLiteral = tagExpression.template;
                    ts.Debug.assert(templateLiteral.kind === 10);
                    callIsIncomplete = !!templateLiteral.isUnterminated;
                }
            }
            else {
                var callExpression = node;
                if (!callExpression.arguments) {
                    ts.Debug.assert(callExpression.kind === 159);
                    return signature.minArgumentCount === 0;
                }
                adjustedArgCount = callExpression.arguments.hasTrailingComma ? args.length + 1 : args.length;
                callIsIncomplete = callExpression.arguments.end === callExpression.end;
                typeArguments = callExpression.typeArguments;
            }
            var hasRightNumberOfTypeArgs = !typeArguments ||
                (signature.typeParameters && typeArguments.length === signature.typeParameters.length);
            if (!hasRightNumberOfTypeArgs) {
                return false;
            }
            var spreadArgIndex = getSpreadArgumentIndex(args);
            if (spreadArgIndex >= 0) {
                return signature.hasRestParameter && spreadArgIndex >= signature.parameters.length - 1;
            }
            if (!signature.hasRestParameter && adjustedArgCount > signature.parameters.length) {
                return false;
            }
            var hasEnoughArguments = adjustedArgCount >= signature.minArgumentCount;
            return callIsIncomplete || hasEnoughArguments;
        }
        function getSingleCallSignature(type) {
            if (type.flags & 48128) {
                var resolved = resolveObjectOrUnionTypeMembers(type);
                if (resolved.callSignatures.length === 1 && resolved.constructSignatures.length === 0 &&
                    resolved.properties.length === 0 && !resolved.stringIndexType && !resolved.numberIndexType) {
                    return resolved.callSignatures[0];
                }
            }
            return undefined;
        }
        function instantiateSignatureInContextOf(signature, contextualSignature, contextualMapper) {
            var context = createInferenceContext(signature.typeParameters, true);
            forEachMatchingParameterType(contextualSignature, signature, function (source, target) {
                inferTypes(context, instantiateType(source, contextualMapper), target);
            });
            return getSignatureInstantiation(signature, getInferredTypes(context));
        }
        function inferTypeArguments(signature, args, excludeArgument, context) {
            var typeParameters = signature.typeParameters;
            var inferenceMapper = createInferenceMapper(context);
            for (var i = 0; i < typeParameters.length; i++) {
                if (!context.inferences[i].isFixed) {
                    context.inferredTypes[i] = undefined;
                }
            }
            if (context.failedTypeParameterIndex !== undefined && !context.inferences[context.failedTypeParameterIndex].isFixed) {
                context.failedTypeParameterIndex = undefined;
            }
            for (var i = 0; i < args.length; i++) {
                var arg = args[i];
                if (arg.kind !== 176) {
                    var paramType = getTypeAtPosition(signature, i);
                    var argType = void 0;
                    if (i === 0 && args[i].parent.kind === 160) {
                        argType = globalTemplateStringsArrayType;
                    }
                    else {
                        var mapper = excludeArgument && excludeArgument[i] !== undefined ? identityMapper : inferenceMapper;
                        argType = checkExpressionWithContextualType(arg, paramType, mapper);
                    }
                    inferTypes(context, argType, paramType);
                }
            }
            if (excludeArgument) {
                for (var i = 0; i < args.length; i++) {
                    if (excludeArgument[i] === false) {
                        var arg = args[i];
                        var paramType = getTypeAtPosition(signature, i);
                        inferTypes(context, checkExpressionWithContextualType(arg, paramType, inferenceMapper), paramType);
                    }
                }
            }
            getInferredTypes(context);
        }
        function checkTypeArguments(signature, typeArguments, typeArgumentResultTypes, reportErrors) {
            var typeParameters = signature.typeParameters;
            var typeArgumentsAreAssignable = true;
            for (var i = 0; i < typeParameters.length; i++) {
                var typeArgNode = typeArguments[i];
                var typeArgument = getTypeFromTypeNode(typeArgNode);
                typeArgumentResultTypes[i] = typeArgument;
                if (typeArgumentsAreAssignable) {
                    var constraint = getConstraintOfTypeParameter(typeParameters[i]);
                    if (constraint) {
                        typeArgumentsAreAssignable = checkTypeAssignableTo(typeArgument, constraint, reportErrors ? typeArgNode : undefined, ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1);
                    }
                }
            }
            return typeArgumentsAreAssignable;
        }
        function checkApplicableSignature(node, args, signature, relation, excludeArgument, reportErrors) {
            for (var i = 0; i < args.length; i++) {
                var arg = args[i];
                if (arg.kind !== 176) {
                    var paramType = getTypeAtPosition(signature, i);
                    var argType = i === 0 && node.kind === 160
                        ? globalTemplateStringsArrayType
                        : arg.kind === 8 && !reportErrors
                            ? getStringLiteralType(arg)
                            : checkExpressionWithContextualType(arg, paramType, excludeArgument && excludeArgument[i] ? identityMapper : undefined);
                    if (!checkTypeRelatedTo(argType, paramType, relation, reportErrors ? arg : undefined, ts.Diagnostics.Argument_of_type_0_is_not_assignable_to_parameter_of_type_1)) {
                        return false;
                    }
                }
            }
            return true;
        }
        function getEffectiveCallArguments(node) {
            var args;
            if (node.kind === 160) {
                var template = node.template;
                args = [template];
                if (template.kind === 172) {
                    ts.forEach(template.templateSpans, function (span) {
                        args.push(span.expression);
                    });
                }
            }
            else {
                args = node.arguments || emptyArray;
            }
            return args;
        }
        function getEffectiveTypeArguments(callExpression) {
            if (callExpression.expression.kind === 91) {
                var containingClass = ts.getAncestor(callExpression, 202);
                var baseClassTypeNode = containingClass && ts.getClassExtendsHeritageClauseElement(containingClass);
                return baseClassTypeNode && baseClassTypeNode.typeArguments;
            }
            else {
                return callExpression.typeArguments;
            }
        }
        function resolveCall(node, signatures, candidatesOutArray) {
            var isTaggedTemplate = node.kind === 160;
            var typeArguments;
            if (!isTaggedTemplate) {
                typeArguments = getEffectiveTypeArguments(node);
                if (node.expression.kind !== 91) {
                    ts.forEach(typeArguments, checkSourceElement);
                }
            }
            var candidates = candidatesOutArray || [];
            reorderCandidates(signatures, candidates);
            if (!candidates.length) {
                error(node, ts.Diagnostics.Supplied_parameters_do_not_match_any_signature_of_call_target);
                return resolveErrorCall(node);
            }
            var args = getEffectiveCallArguments(node);
            var excludeArgument;
            for (var i = isTaggedTemplate ? 1 : 0; i < args.length; i++) {
                if (isContextSensitive(args[i])) {
                    if (!excludeArgument) {
                        excludeArgument = new Array(args.length);
                    }
                    excludeArgument[i] = true;
                }
            }
            var candidateForArgumentError;
            var candidateForTypeArgumentError;
            var resultOfFailedInference;
            var result;
            if (candidates.length > 1) {
                result = chooseOverload(candidates, subtypeRelation);
            }
            if (!result) {
                candidateForArgumentError = undefined;
                candidateForTypeArgumentError = undefined;
                resultOfFailedInference = undefined;
                result = chooseOverload(candidates, assignableRelation);
            }
            if (result) {
                return result;
            }
            if (candidateForArgumentError) {
                checkApplicableSignature(node, args, candidateForArgumentError, assignableRelation, undefined, true);
            }
            else if (candidateForTypeArgumentError) {
                if (!isTaggedTemplate && node.typeArguments) {
                    checkTypeArguments(candidateForTypeArgumentError, node.typeArguments, [], true);
                }
                else {
                    ts.Debug.assert(resultOfFailedInference.failedTypeParameterIndex >= 0);
                    var failedTypeParameter = candidateForTypeArgumentError.typeParameters[resultOfFailedInference.failedTypeParameterIndex];
                    var inferenceCandidates = getInferenceCandidates(resultOfFailedInference, resultOfFailedInference.failedTypeParameterIndex);
                    var diagnosticChainHead = ts.chainDiagnosticMessages(undefined, ts.Diagnostics.The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_type_arguments_explicitly, typeToString(failedTypeParameter));
                    reportNoCommonSupertypeError(inferenceCandidates, node.expression || node.tag, diagnosticChainHead);
                }
            }
            else {
                error(node, ts.Diagnostics.Supplied_parameters_do_not_match_any_signature_of_call_target);
            }
            if (!produceDiagnostics) {
                for (var _i = 0; _i < candidates.length; _i++) {
                    var candidate = candidates[_i];
                    if (hasCorrectArity(node, args, candidate)) {
                        return candidate;
                    }
                }
            }
            return resolveErrorCall(node);
            function chooseOverload(candidates, relation) {
                for (var _i = 0; _i < candidates.length; _i++) {
                    var originalCandidate = candidates[_i];
                    if (!hasCorrectArity(node, args, originalCandidate)) {
                        continue;
                    }
                    var candidate = void 0;
                    var typeArgumentsAreValid = void 0;
                    var inferenceContext = originalCandidate.typeParameters
                        ? createInferenceContext(originalCandidate.typeParameters, false)
                        : undefined;
                    while (true) {
                        candidate = originalCandidate;
                        if (candidate.typeParameters) {
                            var typeArgumentTypes = void 0;
                            if (typeArguments) {
                                typeArgumentTypes = new Array(candidate.typeParameters.length);
                                typeArgumentsAreValid = checkTypeArguments(candidate, typeArguments, typeArgumentTypes, false);
                            }
                            else {
                                inferTypeArguments(candidate, args, excludeArgument, inferenceContext);
                                typeArgumentsAreValid = inferenceContext.failedTypeParameterIndex === undefined;
                                typeArgumentTypes = inferenceContext.inferredTypes;
                            }
                            if (!typeArgumentsAreValid) {
                                break;
                            }
                            candidate = getSignatureInstantiation(candidate, typeArgumentTypes);
                        }
                        if (!checkApplicableSignature(node, args, candidate, relation, excludeArgument, false)) {
                            break;
                        }
                        var index = excludeArgument ? ts.indexOf(excludeArgument, true) : -1;
                        if (index < 0) {
                            return candidate;
                        }
                        excludeArgument[index] = false;
                    }
                    if (originalCandidate.typeParameters) {
                        var instantiatedCandidate = candidate;
                        if (typeArgumentsAreValid) {
                            candidateForArgumentError = instantiatedCandidate;
                        }
                        else {
                            candidateForTypeArgumentError = originalCandidate;
                            if (!typeArguments) {
                                resultOfFailedInference = inferenceContext;
                            }
                        }
                    }
                    else {
                        ts.Debug.assert(originalCandidate === candidate);
                        candidateForArgumentError = originalCandidate;
                    }
                }
                return undefined;
            }
        }
        function resolveCallExpression(node, candidatesOutArray) {
            if (node.expression.kind === 91) {
                var superType = checkSuperExpression(node.expression);
                if (superType !== unknownType) {
                    return resolveCall(node, getSignaturesOfType(superType, 1), candidatesOutArray);
                }
                return resolveUntypedCall(node);
            }
            var funcType = checkExpression(node.expression);
            var apparentType = getApparentType(funcType);
            if (apparentType === unknownType) {
                return resolveErrorCall(node);
            }
            var callSignatures = getSignaturesOfType(apparentType, 0);
            var constructSignatures = getSignaturesOfType(apparentType, 1);
            if (funcType === anyType || (!callSignatures.length && !constructSignatures.length && !(funcType.flags & 16384) && isTypeAssignableTo(funcType, globalFunctionType))) {
                if (node.typeArguments) {
                    error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments);
                }
                return resolveUntypedCall(node);
            }
            if (!callSignatures.length) {
                if (constructSignatures.length) {
                    error(node, ts.Diagnostics.Value_of_type_0_is_not_callable_Did_you_mean_to_include_new, typeToString(funcType));
                }
                else {
                    error(node, ts.Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature);
                }
                return resolveErrorCall(node);
            }
            return resolveCall(node, callSignatures, candidatesOutArray);
        }
        function resolveNewExpression(node, candidatesOutArray) {
            if (node.arguments && languageVersion < 2) {
                var spreadIndex = getSpreadArgumentIndex(node.arguments);
                if (spreadIndex >= 0) {
                    error(node.arguments[spreadIndex], ts.Diagnostics.Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_6_and_higher);
                }
            }
            var expressionType = checkExpression(node.expression);
            if (expressionType === anyType) {
                if (node.typeArguments) {
                    error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments);
                }
                return resolveUntypedCall(node);
            }
            expressionType = getApparentType(expressionType);
            if (expressionType === unknownType) {
                return resolveErrorCall(node);
            }
            var constructSignatures = getSignaturesOfType(expressionType, 1);
            if (constructSignatures.length) {
                return resolveCall(node, constructSignatures, candidatesOutArray);
            }
            var callSignatures = getSignaturesOfType(expressionType, 0);
            if (callSignatures.length) {
                var signature = resolveCall(node, callSignatures, candidatesOutArray);
                if (getReturnTypeOfSignature(signature) !== voidType) {
                    error(node, ts.Diagnostics.Only_a_void_function_can_be_called_with_the_new_keyword);
                }
                return signature;
            }
            error(node, ts.Diagnostics.Cannot_use_new_with_an_expression_whose_type_lacks_a_call_or_construct_signature);
            return resolveErrorCall(node);
        }
        function resolveTaggedTemplateExpression(node, candidatesOutArray) {
            var tagType = checkExpression(node.tag);
            var apparentType = getApparentType(tagType);
            if (apparentType === unknownType) {
                return resolveErrorCall(node);
            }
            var callSignatures = getSignaturesOfType(apparentType, 0);
            if (tagType === anyType || (!callSignatures.length && !(tagType.flags & 16384) && isTypeAssignableTo(tagType, globalFunctionType))) {
                return resolveUntypedCall(node);
            }
            if (!callSignatures.length) {
                error(node, ts.Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature);
                return resolveErrorCall(node);
            }
            return resolveCall(node, callSignatures, candidatesOutArray);
        }
        function getResolvedSignature(node, candidatesOutArray) {
            var links = getNodeLinks(node);
            if (!links.resolvedSignature || candidatesOutArray) {
                links.resolvedSignature = anySignature;
                if (node.kind === 158) {
                    links.resolvedSignature = resolveCallExpression(node, candidatesOutArray);
                }
                else if (node.kind === 159) {
                    links.resolvedSignature = resolveNewExpression(node, candidatesOutArray);
                }
                else if (node.kind === 160) {
                    links.resolvedSignature = resolveTaggedTemplateExpression(node, candidatesOutArray);
                }
                else {
                    ts.Debug.fail("Branch in 'getResolvedSignature' should be unreachable.");
                }
            }
            return links.resolvedSignature;
        }
        function checkCallExpression(node) {
            checkGrammarTypeArguments(node, node.typeArguments) || checkGrammarArguments(node, node.arguments);
            var signature = getResolvedSignature(node);
            if (node.expression.kind === 91) {
                return voidType;
            }
            if (node.kind === 159) {
                var declaration = signature.declaration;
                if (declaration &&
                    declaration.kind !== 136 &&
                    declaration.kind !== 140 &&
                    declaration.kind !== 144) {
                    if (compilerOptions.noImplicitAny) {
                        error(node, ts.Diagnostics.new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type);
                    }
                    return anyType;
                }
            }
            return getReturnTypeOfSignature(signature);
        }
        function checkTaggedTemplateExpression(node) {
            return getReturnTypeOfSignature(getResolvedSignature(node));
        }
        function checkTypeAssertion(node) {
            var exprType = checkExpression(node.expression);
            var targetType = getTypeFromTypeNode(node.type);
            if (produceDiagnostics && targetType !== unknownType) {
                var widenedType = getWidenedType(exprType);
                if (!(isTypeAssignableTo(targetType, widenedType))) {
                    checkTypeAssignableTo(exprType, targetType, node, ts.Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other);
                }
            }
            return targetType;
        }
        function getTypeAtPosition(signature, pos) {
            return signature.hasRestParameter ?
                pos < signature.parameters.length - 1 ? getTypeOfSymbol(signature.parameters[pos]) : getRestTypeOfSignature(signature) :
                pos < signature.parameters.length ? getTypeOfSymbol(signature.parameters[pos]) : anyType;
        }
        function assignContextualParameterTypes(signature, context, mapper) {
            var len = signature.parameters.length - (signature.hasRestParameter ? 1 : 0);
            for (var i = 0; i < len; i++) {
                var parameter = signature.parameters[i];
                var links = getSymbolLinks(parameter);
                links.type = instantiateType(getTypeAtPosition(context, i), mapper);
            }
            if (signature.hasRestParameter && context.hasRestParameter && signature.parameters.length >= context.parameters.length) {
                var parameter = ts.lastOrUndefined(signature.parameters);
                var links = getSymbolLinks(parameter);
                links.type = instantiateType(getTypeOfSymbol(ts.lastOrUndefined(context.parameters)), mapper);
            }
        }
        function getReturnTypeFromBody(func, contextualMapper) {
            var contextualSignature = getContextualSignatureForFunctionLikeDeclaration(func);
            if (!func.body) {
                return unknownType;
            }
            var type;
            if (func.body.kind !== 180) {
                type = checkExpressionCached(func.body, contextualMapper);
            }
            else {
                var types = checkAndAggregateReturnExpressionTypes(func.body, contextualMapper);
                if (types.length === 0) {
                    return voidType;
                }
                type = contextualSignature ? getUnionType(types) : getCommonSupertype(types);
                if (!type) {
                    error(func, ts.Diagnostics.No_best_common_type_exists_among_return_expressions);
                    return unknownType;
                }
            }
            if (!contextualSignature) {
                reportErrorsFromWidening(func, type);
            }
            return getWidenedType(type);
        }
        function checkAndAggregateReturnExpressionTypes(body, contextualMapper) {
            var aggregatedTypes = [];
            ts.forEachReturnStatement(body, function (returnStatement) {
                var expr = returnStatement.expression;
                if (expr) {
                    var type = checkExpressionCached(expr, contextualMapper);
                    if (!ts.contains(aggregatedTypes, type)) {
                        aggregatedTypes.push(type);
                    }
                }
            });
            return aggregatedTypes;
        }
        function bodyContainsAReturnStatement(funcBody) {
            return ts.forEachReturnStatement(funcBody, function (returnStatement) {
                return true;
            });
        }
        function bodyContainsSingleThrowStatement(body) {
            return (body.statements.length === 1) && (body.statements[0].kind === 196);
        }
        function checkIfNonVoidFunctionHasReturnExpressionsOrSingleThrowStatment(func, returnType) {
            if (!produceDiagnostics) {
                return;
            }
            if (returnType === voidType || returnType === anyType) {
                return;
            }
            if (ts.nodeIsMissing(func.body) || func.body.kind !== 180) {
                return;
            }
            var bodyBlock = func.body;
            if (bodyContainsAReturnStatement(bodyBlock)) {
                return;
            }
            if (bodyContainsSingleThrowStatement(bodyBlock)) {
                return;
            }
            error(func.type, ts.Diagnostics.A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value_or_consist_of_a_single_throw_statement);
        }
        function checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper) {
            ts.Debug.assert(node.kind !== 135 || ts.isObjectLiteralMethod(node));
            var hasGrammarError = checkGrammarDeclarationNameInStrictMode(node) || checkGrammarFunctionLikeDeclaration(node);
            if (!hasGrammarError && node.kind === 163) {
                checkGrammarFunctionName(node.name) || checkGrammarForGenerator(node);
            }
            if (contextualMapper === identityMapper && isContextSensitive(node)) {
                return anyFunctionType;
            }
            var links = getNodeLinks(node);
            var type = getTypeOfSymbol(node.symbol);
            if (!(links.flags & 64)) {
                var contextualSignature = getContextualSignature(node);
                if (!(links.flags & 64)) {
                    links.flags |= 64;
                    if (contextualSignature) {
                        var signature = getSignaturesOfType(type, 0)[0];
                        if (isContextSensitive(node)) {
                            assignContextualParameterTypes(signature, contextualSignature, contextualMapper || identityMapper);
                        }
                        if (!node.type && !signature.resolvedReturnType) {
                            var returnType = getReturnTypeFromBody(node, contextualMapper);
                            if (!signature.resolvedReturnType) {
                                signature.resolvedReturnType = returnType;
                            }
                        }
                    }
                    checkSignatureDeclaration(node);
                }
            }
            if (produceDiagnostics && node.kind !== 135 && node.kind !== 134) {
                checkCollisionWithCapturedSuperVariable(node, node.name);
                checkCollisionWithCapturedThisVariable(node, node.name);
            }
            return type;
        }
        function checkFunctionExpressionOrObjectLiteralMethodBody(node) {
            ts.Debug.assert(node.kind !== 135 || ts.isObjectLiteralMethod(node));
            if (node.type && !node.asteriskToken) {
                checkIfNonVoidFunctionHasReturnExpressionsOrSingleThrowStatment(node, getTypeFromTypeNode(node.type));
            }
            if (node.body) {
                if (node.body.kind === 180) {
                    checkSourceElement(node.body);
                }
                else {
                    var exprType = checkExpression(node.body);
                    if (node.type) {
                        checkTypeAssignableTo(exprType, getTypeFromTypeNode(node.type), node.body, undefined);
                    }
                    checkFunctionExpressionBodies(node.body);
                }
            }
        }
        function checkArithmeticOperandType(operand, type, diagnostic) {
            if (!allConstituentTypesHaveKind(type, 1 | 132)) {
                error(operand, diagnostic);
                return false;
            }
            return true;
        }
        function checkReferenceExpression(n, invalidReferenceMessage, constantVariableMessage) {
            function findSymbol(n) {
                var symbol = getNodeLinks(n).resolvedSymbol;
                return symbol && getExportSymbolOfValueSymbolIfExported(symbol);
            }
            function isReferenceOrErrorExpression(n) {
                switch (n.kind) {
                    case 65: {
                        var symbol = findSymbol(n);
                        return !symbol || symbol === unknownSymbol || symbol === argumentsSymbol || (symbol.flags & 3) !== 0;
                    }
                    case 156: {
                        var symbol = findSymbol(n);
                        return !symbol || symbol === unknownSymbol || (symbol.flags & ~8) !== 0;
                    }
                    case 157:
                        return true;
                    case 162:
                        return isReferenceOrErrorExpression(n.expression);
                    default:
                        return false;
                }
            }
            function isConstVariableReference(n) {
                switch (n.kind) {
                    case 65:
                    case 156: {
                        var symbol = findSymbol(n);
                        return symbol && (symbol.flags & 3) !== 0 && (getDeclarationFlagsFromSymbol(symbol) & 8192) !== 0;
                    }
                    case 157: {
                        var index = n.argumentExpression;
                        var symbol = findSymbol(n.expression);
                        if (symbol && index && index.kind === 8) {
                            var name_7 = index.text;
                            var prop = getPropertyOfType(getTypeOfSymbol(symbol), name_7);
                            return prop && (prop.flags & 3) !== 0 && (getDeclarationFlagsFromSymbol(prop) & 8192) !== 0;
                        }
                        return false;
                    }
                    case 162:
                        return isConstVariableReference(n.expression);
                    default:
                        return false;
                }
            }
            if (!isReferenceOrErrorExpression(n)) {
                error(n, invalidReferenceMessage);
                return false;
            }
            if (isConstVariableReference(n)) {
                error(n, constantVariableMessage);
                return false;
            }
            return true;
        }
        function checkDeleteExpression(node) {
            if (node.parserContextFlags & 1 && node.expression.kind === 65) {
                grammarErrorOnNode(node.expression, ts.Diagnostics.delete_cannot_be_called_on_an_identifier_in_strict_mode);
            }
            var operandType = checkExpression(node.expression);
            return booleanType;
        }
        function checkTypeOfExpression(node) {
            var operandType = checkExpression(node.expression);
            return stringType;
        }
        function checkVoidExpression(node) {
            var operandType = checkExpression(node.expression);
            return undefinedType;
        }
        function checkPrefixUnaryExpression(node) {
            if ((node.operator === 38 || node.operator === 39)) {
                checkGrammarEvalOrArgumentsInStrictMode(node, node.operand);
            }
            var operandType = checkExpression(node.operand);
            switch (node.operator) {
                case 33:
                case 34:
                case 47:
                    if (someConstituentTypeHasKind(operandType, 1048576)) {
                        error(node.operand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(node.operator));
                    }
                    return numberType;
                case 46:
                    return booleanType;
                case 38:
                case 39:
                    var ok = checkArithmeticOperandType(node.operand, operandType, ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type);
                    if (ok) {
                        checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant);
                    }
                    return numberType;
            }
            return unknownType;
        }
        function checkPostfixUnaryExpression(node) {
            checkGrammarEvalOrArgumentsInStrictMode(node, node.operand);
            var operandType = checkExpression(node.operand);
            var ok = checkArithmeticOperandType(node.operand, operandType, ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type);
            if (ok) {
                checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant);
            }
            return numberType;
        }
        function someConstituentTypeHasKind(type, kind) {
            if (type.flags & kind) {
                return true;
            }
            if (type.flags & 16384) {
                var types = type.types;
                for (var _i = 0; _i < types.length; _i++) {
                    var current = types[_i];
                    if (current.flags & kind) {
                        return true;
                    }
                }
                return false;
            }
            return false;
        }
        function allConstituentTypesHaveKind(type, kind) {
            if (type.flags & kind) {
                return true;
            }
            if (type.flags & 16384) {
                var types = type.types;
                for (var _i = 0; _i < types.length; _i++) {
                    var current = types[_i];
                    if (!(current.flags & kind)) {
                        return false;
                    }
                }
                return true;
            }
            return false;
        }
        function isConstEnumObjectType(type) {
            return type.flags & (48128 | 32768) && type.symbol && isConstEnumSymbol(type.symbol);
        }
        function isConstEnumSymbol(symbol) {
            return (symbol.flags & 128) !== 0;
        }
        function checkInstanceOfExpression(node, leftType, rightType) {
            if (allConstituentTypesHaveKind(leftType, 1049086)) {
                error(node.left, ts.Diagnostics.The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter);
            }
            if (!(rightType.flags & 1 || isTypeSubtypeOf(rightType, globalFunctionType))) {
                error(node.right, ts.Diagnostics.The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type);
            }
            return booleanType;
        }
        function checkInExpression(node, leftType, rightType) {
            if (!allConstituentTypesHaveKind(leftType, 1 | 258 | 132 | 1048576)) {
                error(node.left, ts.Diagnostics.The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol);
            }
            if (!allConstituentTypesHaveKind(rightType, 1 | 48128 | 512)) {
                error(node.right, ts.Diagnostics.The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter);
            }
            return booleanType;
        }
        function checkObjectLiteralAssignment(node, sourceType, contextualMapper) {
            var properties = node.properties;
            for (var _i = 0; _i < properties.length; _i++) {
                var p = properties[_i];
                if (p.kind === 225 || p.kind === 226) {
                    var name_8 = p.name;
                    var type = sourceType.flags & 1 ? sourceType :
                        getTypeOfPropertyOfType(sourceType, name_8.text) ||
                            isNumericLiteralName(name_8.text) && getIndexTypeOfType(sourceType, 1) ||
                            getIndexTypeOfType(sourceType, 0);
                    if (type) {
                        checkDestructuringAssignment(p.initializer || name_8, type);
                    }
                    else {
                        error(name_8, ts.Diagnostics.Type_0_has_no_property_1_and_no_string_index_signature, typeToString(sourceType), ts.declarationNameToString(name_8));
                    }
                }
                else {
                    error(p, ts.Diagnostics.Property_assignment_expected);
                }
            }
            return sourceType;
        }
        function checkArrayLiteralAssignment(node, sourceType, contextualMapper) {
            var elementType = checkIteratedTypeOrElementType(sourceType, node, false) || unknownType;
            var elements = node.elements;
            for (var i = 0; i < elements.length; i++) {
                var e = elements[i];
                if (e.kind !== 176) {
                    if (e.kind !== 174) {
                        var propName = "" + i;
                        var type = sourceType.flags & 1 ? sourceType :
                            isTupleLikeType(sourceType)
                                ? getTypeOfPropertyOfType(sourceType, propName)
                                : elementType;
                        if (type) {
                            checkDestructuringAssignment(e, type, contextualMapper);
                        }
                        else {
                            if (isTupleType(sourceType)) {
                                error(e, ts.Diagnostics.Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2, typeToString(sourceType), sourceType.elementTypes.length, elements.length);
                            }
                            else {
                                error(e, ts.Diagnostics.Type_0_has_no_property_1, typeToString(sourceType), propName);
                            }
                        }
                    }
                    else {
                        if (i < elements.length - 1) {
                            error(e, ts.Diagnostics.A_rest_element_must_be_last_in_an_array_destructuring_pattern);
                        }
                        else {
                            var restExpression = e.expression;
                            if (restExpression.kind === 170 && restExpression.operatorToken.kind === 53) {
                                error(restExpression.operatorToken, ts.Diagnostics.A_rest_element_cannot_have_an_initializer);
                            }
                            else {
                                checkDestructuringAssignment(restExpression, createArrayType(elementType), contextualMapper);
                            }
                        }
                    }
                }
            }
            return sourceType;
        }
        function checkDestructuringAssignment(target, sourceType, contextualMapper) {
            if (target.kind === 170 && target.operatorToken.kind === 53) {
                checkBinaryExpression(target, contextualMapper);
                target = target.left;
            }
            if (target.kind === 155) {
                return checkObjectLiteralAssignment(target, sourceType, contextualMapper);
            }
            if (target.kind === 154) {
                return checkArrayLiteralAssignment(target, sourceType, contextualMapper);
            }
            return checkReferenceAssignment(target, sourceType, contextualMapper);
        }
        function checkReferenceAssignment(target, sourceType, contextualMapper) {
            var targetType = checkExpression(target, contextualMapper);
            if (checkReferenceExpression(target, ts.Diagnostics.Invalid_left_hand_side_of_assignment_expression, ts.Diagnostics.Left_hand_side_of_assignment_expression_cannot_be_a_constant)) {
                checkTypeAssignableTo(sourceType, targetType, target, undefined);
            }
            return sourceType;
        }
        function checkBinaryExpression(node, contextualMapper) {
            if (ts.isLeftHandSideExpression(node.left) && ts.isAssignmentOperator(node.operatorToken.kind)) {
                checkGrammarEvalOrArgumentsInStrictMode(node, node.left);
            }
            var operator = node.operatorToken.kind;
            if (operator === 53 && (node.left.kind === 155 || node.left.kind === 154)) {
                return checkDestructuringAssignment(node.left, checkExpression(node.right, contextualMapper), contextualMapper);
            }
            var leftType = checkExpression(node.left, contextualMapper);
            var rightType = checkExpression(node.right, contextualMapper);
            switch (operator) {
                case 35:
                case 56:
                case 36:
                case 57:
                case 37:
                case 58:
                case 34:
                case 55:
                case 40:
                case 59:
                case 41:
                case 60:
                case 42:
                case 61:
                case 44:
                case 63:
                case 45:
                case 64:
                case 43:
                case 62:
                    if (leftType.flags & (32 | 64))
                        leftType = rightType;
                    if (rightType.flags & (32 | 64))
                        rightType = leftType;
                    var suggestedOperator;
                    if ((leftType.flags & 8) &&
                        (rightType.flags & 8) &&
                        (suggestedOperator = getSuggestedBooleanOperator(node.operatorToken.kind)) !== undefined) {
                        error(node, ts.Diagnostics.The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead, ts.tokenToString(node.operatorToken.kind), ts.tokenToString(suggestedOperator));
                    }
                    else {
                        var leftOk = checkArithmeticOperandType(node.left, leftType, ts.Diagnostics.The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type);
                        var rightOk = checkArithmeticOperandType(node.right, rightType, ts.Diagnostics.The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type);
                        if (leftOk && rightOk) {
                            checkAssignmentOperator(numberType);
                        }
                    }
                    return numberType;
                case 33:
                case 54:
                    if (leftType.flags & (32 | 64))
                        leftType = rightType;
                    if (rightType.flags & (32 | 64))
                        rightType = leftType;
                    var resultType;
                    if (allConstituentTypesHaveKind(leftType, 132) && allConstituentTypesHaveKind(rightType, 132)) {
                        resultType = numberType;
                    }
                    else {
                        if (allConstituentTypesHaveKind(leftType, 258) || allConstituentTypesHaveKind(rightType, 258)) {
                            resultType = stringType;
                        }
                        else if (leftType.flags & 1 || rightType.flags & 1) {
                            resultType = anyType;
                        }
                        if (resultType && !checkForDisallowedESSymbolOperand(operator)) {
                            return resultType;
                        }
                    }
                    if (!resultType) {
                        reportOperatorError();
                        return anyType;
                    }
                    if (operator === 54) {
                        checkAssignmentOperator(resultType);
                    }
                    return resultType;
                case 24:
                case 25:
                case 26:
                case 27:
                    if (!checkForDisallowedESSymbolOperand(operator)) {
                        return booleanType;
                    }
                case 28:
                case 29:
                case 30:
                case 31:
                    if (!isTypeAssignableTo(leftType, rightType) && !isTypeAssignableTo(rightType, leftType)) {
                        reportOperatorError();
                    }
                    return booleanType;
                case 87:
                    return checkInstanceOfExpression(node, leftType, rightType);
                case 86:
                    return checkInExpression(node, leftType, rightType);
                case 48:
                    return rightType;
                case 49:
                    return getUnionType([leftType, rightType]);
                case 53:
                    checkAssignmentOperator(rightType);
                    return rightType;
                case 23:
                    return rightType;
            }
            function checkForDisallowedESSymbolOperand(operator) {
                var offendingSymbolOperand = someConstituentTypeHasKind(leftType, 1048576) ? node.left :
                    someConstituentTypeHasKind(rightType, 1048576) ? node.right :
                        undefined;
                if (offendingSymbolOperand) {
                    error(offendingSymbolOperand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(operator));
                    return false;
                }
                return true;
            }
            function getSuggestedBooleanOperator(operator) {
                switch (operator) {
                    case 44:
                    case 63:
                        return 49;
                    case 45:
                    case 64:
                        return 31;
                    case 43:
                    case 62:
                        return 48;
                    default:
                        return undefined;
                }
            }
            function checkAssignmentOperator(valueType) {
                if (produceDiagnostics && operator >= 53 && operator <= 64) {
                    var ok = checkReferenceExpression(node.left, ts.Diagnostics.Invalid_left_hand_side_of_assignment_expression, ts.Diagnostics.Left_hand_side_of_assignment_expression_cannot_be_a_constant);
                    if (ok) {
                        checkTypeAssignableTo(valueType, leftType, node.left, undefined);
                    }
                }
            }
            function reportOperatorError() {
                error(node, ts.Diagnostics.Operator_0_cannot_be_applied_to_types_1_and_2, ts.tokenToString(node.operatorToken.kind), typeToString(leftType), typeToString(rightType));
            }
        }
        function checkYieldExpression(node) {
            if (!(node.parserContextFlags & 4)) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.yield_expression_must_be_contained_within_a_generator_declaration);
            }
            else {
                grammarErrorOnFirstToken(node, ts.Diagnostics.yield_expressions_are_not_currently_supported);
            }
        }
        function checkConditionalExpression(node, contextualMapper) {
            checkExpression(node.condition);
            var type1 = checkExpression(node.whenTrue, contextualMapper);
            var type2 = checkExpression(node.whenFalse, contextualMapper);
            return getUnionType([type1, type2]);
        }
        function checkTemplateExpression(node) {
            ts.forEach(node.templateSpans, function (templateSpan) {
                checkExpression(templateSpan.expression);
            });
            return stringType;
        }
        function checkExpressionWithContextualType(node, contextualType, contextualMapper) {
            var saveContextualType = node.contextualType;
            node.contextualType = contextualType;
            var result = checkExpression(node, contextualMapper);
            node.contextualType = saveContextualType;
            return result;
        }
        function checkExpressionCached(node, contextualMapper) {
            var links = getNodeLinks(node);
            if (!links.resolvedType) {
                links.resolvedType = checkExpression(node, contextualMapper);
            }
            return links.resolvedType;
        }
        function checkPropertyAssignment(node, contextualMapper) {
            if (node.name.kind === 128) {
                checkComputedPropertyName(node.name);
            }
            return checkExpression(node.initializer, contextualMapper);
        }
        function checkObjectLiteralMethod(node, contextualMapper) {
            checkGrammarMethod(node);
            if (node.name.kind === 128) {
                checkComputedPropertyName(node.name);
            }
            var uninstantiatedType = checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper);
            return instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, contextualMapper);
        }
        function instantiateTypeWithSingleGenericCallSignature(node, type, contextualMapper) {
            if (contextualMapper && contextualMapper !== identityMapper) {
                var signature = getSingleCallSignature(type);
                if (signature && signature.typeParameters) {
                    var contextualType = getContextualType(node);
                    if (contextualType) {
                        var contextualSignature = getSingleCallSignature(contextualType);
                        if (contextualSignature && !contextualSignature.typeParameters) {
                            return getOrCreateTypeFromSignature(instantiateSignatureInContextOf(signature, contextualSignature, contextualMapper));
                        }
                    }
                }
            }
            return type;
        }
        function checkExpression(node, contextualMapper) {
            checkGrammarIdentifierInStrictMode(node);
            return checkExpressionOrQualifiedName(node, contextualMapper);
        }
        function checkExpressionOrQualifiedName(node, contextualMapper) {
            var type;
            if (node.kind == 127) {
                type = checkQualifiedName(node);
            }
            else {
                var uninstantiatedType = checkExpressionWorker(node, contextualMapper);
                type = instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, contextualMapper);
            }
            if (isConstEnumObjectType(type)) {
                var ok = (node.parent.kind === 156 && node.parent.expression === node) ||
                    (node.parent.kind === 157 && node.parent.expression === node) ||
                    ((node.kind === 65 || node.kind === 127) && isInRightSideOfImportOrExportAssignment(node));
                if (!ok) {
                    error(node, ts.Diagnostics.const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment);
                }
            }
            return type;
        }
        function checkNumericLiteral(node) {
            checkGrammarNumericLiteral(node);
            return numberType;
        }
        function checkExpressionWorker(node, contextualMapper) {
            switch (node.kind) {
                case 65:
                    return checkIdentifier(node);
                case 93:
                    return checkThisExpression(node);
                case 91:
                    return checkSuperExpression(node);
                case 89:
                    return nullType;
                case 95:
                case 80:
                    return booleanType;
                case 7:
                    return checkNumericLiteral(node);
                case 172:
                    return checkTemplateExpression(node);
                case 8:
                case 10:
                    return stringType;
                case 9:
                    return globalRegExpType;
                case 154:
                    return checkArrayLiteral(node, contextualMapper);
                case 155:
                    return checkObjectLiteral(node, contextualMapper);
                case 156:
                    return checkPropertyAccessExpression(node);
                case 157:
                    return checkIndexedAccess(node);
                case 158:
                case 159:
                    return checkCallExpression(node);
                case 160:
                    return checkTaggedTemplateExpression(node);
                case 161:
                    return checkTypeAssertion(node);
                case 162:
                    return checkExpression(node.expression, contextualMapper);
                case 175:
                    return checkClassExpression(node);
                case 163:
                case 164:
                    return checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper);
                case 166:
                    return checkTypeOfExpression(node);
                case 165:
                    return checkDeleteExpression(node);
                case 167:
                    return checkVoidExpression(node);
                case 168:
                    return checkPrefixUnaryExpression(node);
                case 169:
                    return checkPostfixUnaryExpression(node);
                case 170:
                    return checkBinaryExpression(node, contextualMapper);
                case 171:
                    return checkConditionalExpression(node, contextualMapper);
                case 174:
                    return checkSpreadElementExpression(node, contextualMapper);
                case 176:
                    return undefinedType;
                case 173:
                    checkYieldExpression(node);
                    return unknownType;
            }
            return unknownType;
        }
        function checkTypeParameter(node) {
            checkGrammarDeclarationNameInStrictMode(node);
            if (node.expression) {
                grammarErrorOnFirstToken(node.expression, ts.Diagnostics.Type_expected);
            }
            checkSourceElement(node.constraint);
            if (produceDiagnostics) {
                checkTypeParameterHasIllegalReferencesInConstraint(node);
                checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_parameter_name_cannot_be_0);
            }
        }
        function checkParameter(node) {
            // Grammar checking
            // It is a SyntaxError if the Identifier "eval" or the Identifier "arguments" occurs as the
            // Identifier in a PropertySetParameterList of a PropertyAssignment that is contained in strict code
            // or if its FunctionBody is strict code(11.1.5).
            // It is a SyntaxError if the identifier eval or arguments appears within a FormalParameterList of a
            // strict mode FunctionLikeDeclaration or FunctionExpression(13.1)
            checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarEvalOrArgumentsInStrictMode(node, node.name);
            checkVariableLikeDeclaration(node);
            var func = ts.getContainingFunction(node);
            if (node.flags & 112) {
                func = ts.getContainingFunction(node);
                if (!(func.kind === 136 && ts.nodeIsPresent(func.body))) {
                    error(node, ts.Diagnostics.A_parameter_property_is_only_allowed_in_a_constructor_implementation);
                }
            }
            if (node.questionToken && ts.isBindingPattern(node.name) && func.body) {
                error(node, ts.Diagnostics.A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature);
            }
            if (node.dotDotDotToken && !ts.isBindingPattern(node.name) && !isArrayType(getTypeOfSymbol(node.symbol))) {
                error(node, ts.Diagnostics.A_rest_parameter_must_be_of_an_array_type);
            }
        }
        function checkSignatureDeclaration(node) {
            if (node.kind === 141) {
                checkGrammarIndexSignature(node);
            }
            else if (node.kind === 143 || node.kind === 201 || node.kind === 144 ||
                node.kind === 139 || node.kind === 136 ||
                node.kind === 140) {
                checkGrammarFunctionLikeDeclaration(node);
            }
            checkTypeParameters(node.typeParameters);
            ts.forEach(node.parameters, checkParameter);
            if (node.type) {
                checkSourceElement(node.type);
            }
            if (produceDiagnostics) {
                checkCollisionWithArgumentsInGeneratedCode(node);
                if (compilerOptions.noImplicitAny && !node.type) {
                    switch (node.kind) {
                        case 140:
                            error(node, ts.Diagnostics.Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type);
                            break;
                        case 139:
                            error(node, ts.Diagnostics.Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type);
                            break;
                    }
                }
            }
            checkSpecializedSignatureDeclaration(node);
        }
        function checkTypeForDuplicateIndexSignatures(node) {
            if (node.kind === 203) {
                var nodeSymbol = getSymbolOfNode(node);
                if (nodeSymbol.declarations.length > 0 && nodeSymbol.declarations[0] !== node) {
                    return;
                }
            }
            var indexSymbol = getIndexSymbol(getSymbolOfNode(node));
            if (indexSymbol) {
                var seenNumericIndexer = false;
                var seenStringIndexer = false;
                for (var _i = 0, _a = indexSymbol.declarations; _i < _a.length; _i++) {
                    var decl = _a[_i];
                    var declaration = decl;
                    if (declaration.parameters.length === 1 && declaration.parameters[0].type) {
                        switch (declaration.parameters[0].type.kind) {
                            case 122:
                                if (!seenStringIndexer) {
                                    seenStringIndexer = true;
                                }
                                else {
                                    error(declaration, ts.Diagnostics.Duplicate_string_index_signature);
                                }
                                break;
                            case 120:
                                if (!seenNumericIndexer) {
                                    seenNumericIndexer = true;
                                }
                                else {
                                    error(declaration, ts.Diagnostics.Duplicate_number_index_signature);
                                }
                                break;
                        }
                    }
                }
            }
        }
        function checkPropertyDeclaration(node) {
            checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarProperty(node) || checkGrammarComputedPropertyName(node.name);
            checkVariableLikeDeclaration(node);
        }
        function checkMethodDeclaration(node) {
            checkGrammarMethod(node) || checkGrammarComputedPropertyName(node.name);
            checkFunctionLikeDeclaration(node);
        }
        function checkConstructorDeclaration(node) {
            checkSignatureDeclaration(node);
            checkGrammarConstructorTypeParameters(node) || checkGrammarConstructorTypeAnnotation(node);
            checkSourceElement(node.body);
            var symbol = getSymbolOfNode(node);
            var firstDeclaration = ts.getDeclarationOfKind(symbol, node.kind);
            if (node === firstDeclaration) {
                checkFunctionOrConstructorSymbol(symbol);
            }
            if (ts.nodeIsMissing(node.body)) {
                return;
            }
            if (!produceDiagnostics) {
                return;
            }
            function isSuperCallExpression(n) {
                return n.kind === 158 && n.expression.kind === 91;
            }
            function containsSuperCall(n) {
                if (isSuperCallExpression(n)) {
                    return true;
                }
                switch (n.kind) {
                    case 163:
                    case 201:
                    case 164:
                    case 155: return false;
                    default: return ts.forEachChild(n, containsSuperCall);
                }
            }
            function markThisReferencesAsErrors(n) {
                if (n.kind === 93) {
                    error(n, ts.Diagnostics.this_cannot_be_referenced_in_current_location);
                }
                else if (n.kind !== 163 && n.kind !== 201) {
                    ts.forEachChild(n, markThisReferencesAsErrors);
                }
            }
            function isInstancePropertyWithInitializer(n) {
                return n.kind === 133 &&
                    !(n.flags & 128) &&
                    !!n.initializer;
            }
            if (ts.getClassExtendsHeritageClauseElement(node.parent)) {
                if (containsSuperCall(node.body)) {
                    var superCallShouldBeFirst = ts.forEach(node.parent.members, isInstancePropertyWithInitializer) ||
                        ts.forEach(node.parameters, function (p) { return p.flags & (16 | 32 | 64); });
                    if (superCallShouldBeFirst) {
                        var statements = node.body.statements;
                        if (!statements.length || statements[0].kind !== 183 || !isSuperCallExpression(statements[0].expression)) {
                            error(node, ts.Diagnostics.A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_or_has_parameter_properties);
                        }
                        else {
                            markThisReferencesAsErrors(statements[0].expression);
                        }
                    }
                }
                else {
                    error(node, ts.Diagnostics.Constructors_for_derived_classes_must_contain_a_super_call);
                }
            }
        }
        function checkAccessorDeclaration(node) {
            if (produceDiagnostics) {
                checkGrammarFunctionLikeDeclaration(node) || checkGrammarAccessor(node) || checkGrammarComputedPropertyName(node.name);
                if (node.kind === 137) {
                    if (!ts.isInAmbientContext(node) && ts.nodeIsPresent(node.body) && !(bodyContainsAReturnStatement(node.body) || bodyContainsSingleThrowStatement(node.body))) {
                        error(node.name, ts.Diagnostics.A_get_accessor_must_return_a_value_or_consist_of_a_single_throw_statement);
                    }
                }
                if (!ts.hasDynamicName(node)) {
                    var otherKind = node.kind === 137 ? 138 : 137;
                    var otherAccessor = ts.getDeclarationOfKind(node.symbol, otherKind);
                    if (otherAccessor) {
                        if (((node.flags & 112) !== (otherAccessor.flags & 112))) {
                            error(node.name, ts.Diagnostics.Getter_and_setter_accessors_do_not_agree_in_visibility);
                        }
                        var currentAccessorType = getAnnotatedAccessorType(node);
                        var otherAccessorType = getAnnotatedAccessorType(otherAccessor);
                        if (currentAccessorType && otherAccessorType) {
                            if (!isTypeIdenticalTo(currentAccessorType, otherAccessorType)) {
                                error(node, ts.Diagnostics.get_and_set_accessor_must_have_the_same_type);
                            }
                        }
                    }
                }
                getTypeOfAccessors(getSymbolOfNode(node));
            }
            checkFunctionLikeDeclaration(node);
        }
        function checkMissingDeclaration(node) {
            checkDecorators(node);
        }
        function checkTypeReferenceNode(node) {
            checkGrammarTypeReferenceInStrictMode(node.typeName);
            return checkTypeReferenceOrExpressionWithTypeArguments(node);
        }
        function checkExpressionWithTypeArguments(node) {
            checkGrammarExpressionWithTypeArgumentsInStrictMode(node.expression);
            return checkTypeReferenceOrExpressionWithTypeArguments(node);
        }
        function checkTypeReferenceOrExpressionWithTypeArguments(node) {
            checkGrammarTypeArguments(node, node.typeArguments);
            var type = getTypeFromTypeReferenceOrExpressionWithTypeArguments(node);
            if (type !== unknownType && node.typeArguments) {
                var len = node.typeArguments.length;
                for (var i = 0; i < len; i++) {
                    checkSourceElement(node.typeArguments[i]);
                    var constraint = getConstraintOfTypeParameter(type.target.typeParameters[i]);
                    if (produceDiagnostics && constraint) {
                        var typeArgument = type.typeArguments[i];
                        checkTypeAssignableTo(typeArgument, constraint, node, ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1);
                    }
                }
            }
        }
        function checkTypeQuery(node) {
            getTypeFromTypeQueryNode(node);
        }
        function checkTypeLiteral(node) {
            ts.forEach(node.members, checkSourceElement);
            if (produceDiagnostics) {
                var type = getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node);
                checkIndexConstraints(type);
                checkTypeForDuplicateIndexSignatures(node);
            }
        }
        function checkArrayType(node) {
            checkSourceElement(node.elementType);
        }
        function checkTupleType(node) {
            var hasErrorFromDisallowedTrailingComma = checkGrammarForDisallowedTrailingComma(node.elementTypes);
            if (!hasErrorFromDisallowedTrailingComma && node.elementTypes.length === 0) {
                grammarErrorOnNode(node, ts.Diagnostics.A_tuple_type_element_list_cannot_be_empty);
            }
            ts.forEach(node.elementTypes, checkSourceElement);
        }
        function checkUnionType(node) {
            ts.forEach(node.types, checkSourceElement);
        }
        function isPrivateWithinAmbient(node) {
            return (node.flags & 32) && ts.isInAmbientContext(node);
        }
        function checkSpecializedSignatureDeclaration(signatureDeclarationNode) {
            if (!produceDiagnostics) {
                return;
            }
            var signature = getSignatureFromDeclaration(signatureDeclarationNode);
            if (!signature.hasStringLiterals) {
                return;
            }
            if (ts.nodeIsPresent(signatureDeclarationNode.body)) {
                error(signatureDeclarationNode, ts.Diagnostics.A_signature_with_an_implementation_cannot_use_a_string_literal_type);
                return;
            }
            var signaturesToCheck;
            if (!signatureDeclarationNode.name && signatureDeclarationNode.parent && signatureDeclarationNode.parent.kind === 203) {
                ts.Debug.assert(signatureDeclarationNode.kind === 139 || signatureDeclarationNode.kind === 140);
                var signatureKind = signatureDeclarationNode.kind === 139 ? 0 : 1;
                var containingSymbol = getSymbolOfNode(signatureDeclarationNode.parent);
                var containingType = getDeclaredTypeOfSymbol(containingSymbol);
                signaturesToCheck = getSignaturesOfType(containingType, signatureKind);
            }
            else {
                signaturesToCheck = getSignaturesOfSymbol(getSymbolOfNode(signatureDeclarationNode));
            }
            for (var _i = 0; _i < signaturesToCheck.length; _i++) {
                var otherSignature = signaturesToCheck[_i];
                if (!otherSignature.hasStringLiterals && isSignatureAssignableTo(signature, otherSignature)) {
                    return;
                }
            }
            error(signatureDeclarationNode, ts.Diagnostics.Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature);
        }
        function getEffectiveDeclarationFlags(n, flagsToCheck) {
            var flags = ts.getCombinedNodeFlags(n);
            if (n.parent.kind !== 203 && ts.isInAmbientContext(n)) {
                if (!(flags & 2)) {
                    flags |= 1;
                }
                flags |= 2;
            }
            return flags & flagsToCheck;
        }
        function checkFunctionOrConstructorSymbol(symbol) {
            if (!produceDiagnostics) {
                return;
            }
            function getCanonicalOverload(overloads, implementation) {
                var implementationSharesContainerWithFirstOverload = implementation !== undefined && implementation.parent === overloads[0].parent;
                return implementationSharesContainerWithFirstOverload ? implementation : overloads[0];
            }
            function checkFlagAgreementBetweenOverloads(overloads, implementation, flagsToCheck, someOverloadFlags, allOverloadFlags) {
                var someButNotAllOverloadFlags = someOverloadFlags ^ allOverloadFlags;
                if (someButNotAllOverloadFlags !== 0) {
                    var canonicalFlags = getEffectiveDeclarationFlags(getCanonicalOverload(overloads, implementation), flagsToCheck);
                    ts.forEach(overloads, function (o) {
                        var deviation = getEffectiveDeclarationFlags(o, flagsToCheck) ^ canonicalFlags;
                        if (deviation & 1) {
                            error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_exported_or_not_exported);
                        }
                        else if (deviation & 2) {
                            error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_ambient_or_non_ambient);
                        }
                        else if (deviation & (32 | 64)) {
                            error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_public_private_or_protected);
                        }
                    });
                }
            }
            function checkQuestionTokenAgreementBetweenOverloads(overloads, implementation, someHaveQuestionToken, allHaveQuestionToken) {
                if (someHaveQuestionToken !== allHaveQuestionToken) {
                    var canonicalHasQuestionToken = ts.hasQuestionToken(getCanonicalOverload(overloads, implementation));
                    ts.forEach(overloads, function (o) {
                        var deviation = ts.hasQuestionToken(o) !== canonicalHasQuestionToken;
                        if (deviation) {
                            error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_optional_or_required);
                        }
                    });
                }
            }
            var flagsToCheck = 1 | 2 | 32 | 64;
            var someNodeFlags = 0;
            var allNodeFlags = flagsToCheck;
            var someHaveQuestionToken = false;
            var allHaveQuestionToken = true;
            var hasOverloads = false;
            var bodyDeclaration;
            var lastSeenNonAmbientDeclaration;
            var previousDeclaration;
            var declarations = symbol.declarations;
            var isConstructor = (symbol.flags & 16384) !== 0;
            function reportImplementationExpectedError(node) {
                if (node.name && ts.nodeIsMissing(node.name)) {
                    return;
                }
                var seen = false;
                var subsequentNode = ts.forEachChild(node.parent, function (c) {
                    if (seen) {
                        return c;
                    }
                    else {
                        seen = c === node;
                    }
                });
                if (subsequentNode) {
                    if (subsequentNode.kind === node.kind) {
                        var errorNode_1 = subsequentNode.name || subsequentNode;
                        if (node.name && subsequentNode.name && node.name.text === subsequentNode.name.text) {
                            ts.Debug.assert(node.kind === 135 || node.kind === 134);
                            ts.Debug.assert((node.flags & 128) !== (subsequentNode.flags & 128));
                            var diagnostic = node.flags & 128 ? ts.Diagnostics.Function_overload_must_be_static : ts.Diagnostics.Function_overload_must_not_be_static;
                            error(errorNode_1, diagnostic);
                            return;
                        }
                        else if (ts.nodeIsPresent(subsequentNode.body)) {
                            error(errorNode_1, ts.Diagnostics.Function_implementation_name_must_be_0, ts.declarationNameToString(node.name));
                            return;
                        }
                    }
                }
                var errorNode = node.name || node;
                if (isConstructor) {
                    error(errorNode, ts.Diagnostics.Constructor_implementation_is_missing);
                }
                else {
                    error(errorNode, ts.Diagnostics.Function_implementation_is_missing_or_not_immediately_following_the_declaration);
                }
            }
            var isExportSymbolInsideModule = symbol.parent && symbol.parent.flags & 1536;
            var duplicateFunctionDeclaration = false;
            var multipleConstructorImplementation = false;
            for (var _i = 0; _i < declarations.length; _i++) {
                var current = declarations[_i];
                var node = current;
                var inAmbientContext = ts.isInAmbientContext(node);
                var inAmbientContextOrInterface = node.parent.kind === 203 || node.parent.kind === 146 || inAmbientContext;
                if (inAmbientContextOrInterface) {
                    previousDeclaration = undefined;
                }
                if (node.kind === 201 || node.kind === 135 || node.kind === 134 || node.kind === 136) {
                    var currentNodeFlags = getEffectiveDeclarationFlags(node, flagsToCheck);
                    someNodeFlags |= currentNodeFlags;
                    allNodeFlags &= currentNodeFlags;
                    someHaveQuestionToken = someHaveQuestionToken || ts.hasQuestionToken(node);
                    allHaveQuestionToken = allHaveQuestionToken && ts.hasQuestionToken(node);
                    if (ts.nodeIsPresent(node.body) && bodyDeclaration) {
                        if (isConstructor) {
                            multipleConstructorImplementation = true;
                        }
                        else {
                            duplicateFunctionDeclaration = true;
                        }
                    }
                    else if (!isExportSymbolInsideModule && previousDeclaration && previousDeclaration.parent === node.parent && previousDeclaration.end !== node.pos) {
                        reportImplementationExpectedError(previousDeclaration);
                    }
                    if (ts.nodeIsPresent(node.body)) {
                        if (!bodyDeclaration) {
                            bodyDeclaration = node;
                        }
                    }
                    else {
                        hasOverloads = true;
                    }
                    previousDeclaration = node;
                    if (!inAmbientContextOrInterface) {
                        lastSeenNonAmbientDeclaration = node;
                    }
                }
            }
            if (multipleConstructorImplementation) {
                ts.forEach(declarations, function (declaration) {
                    error(declaration, ts.Diagnostics.Multiple_constructor_implementations_are_not_allowed);
                });
            }
            if (duplicateFunctionDeclaration) {
                ts.forEach(declarations, function (declaration) {
                    error(declaration.name, ts.Diagnostics.Duplicate_function_implementation);
                });
            }
            if (!isExportSymbolInsideModule && lastSeenNonAmbientDeclaration && !lastSeenNonAmbientDeclaration.body) {
                reportImplementationExpectedError(lastSeenNonAmbientDeclaration);
            }
            if (hasOverloads) {
                checkFlagAgreementBetweenOverloads(declarations, bodyDeclaration, flagsToCheck, someNodeFlags, allNodeFlags);
                checkQuestionTokenAgreementBetweenOverloads(declarations, bodyDeclaration, someHaveQuestionToken, allHaveQuestionToken);
                if (bodyDeclaration) {
                    var signatures = getSignaturesOfSymbol(symbol);
                    var bodySignature = getSignatureFromDeclaration(bodyDeclaration);
                    if (!bodySignature.hasStringLiterals) {
                        for (var _a = 0; _a < signatures.length; _a++) {
                            var signature = signatures[_a];
                            if (!signature.hasStringLiterals && !isSignatureAssignableTo(bodySignature, signature)) {
                                error(signature.declaration, ts.Diagnostics.Overload_signature_is_not_compatible_with_function_implementation);
                                break;
                            }
                        }
                    }
                }
            }
        }
        function checkExportsOnMergedDeclarations(node) {
            if (!produceDiagnostics) {
                return;
            }
            var symbol = node.localSymbol;
            if (!symbol) {
                symbol = getSymbolOfNode(node);
                if (!(symbol.flags & 7340032)) {
                    return;
                }
            }
            if (ts.getDeclarationOfKind(symbol, node.kind) !== node) {
                return;
            }
            var exportedDeclarationSpaces = 0;
            var nonExportedDeclarationSpaces = 0;
            ts.forEach(symbol.declarations, function (d) {
                var declarationSpaces = getDeclarationSpaces(d);
                if (getEffectiveDeclarationFlags(d, 1)) {
                    exportedDeclarationSpaces |= declarationSpaces;
                }
                else {
                    nonExportedDeclarationSpaces |= declarationSpaces;
                }
            });
            var commonDeclarationSpace = exportedDeclarationSpaces & nonExportedDeclarationSpaces;
            if (commonDeclarationSpace) {
                ts.forEach(symbol.declarations, function (d) {
                    if (getDeclarationSpaces(d) & commonDeclarationSpace) {
                        error(d.name, ts.Diagnostics.Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local, ts.declarationNameToString(d.name));
                    }
                });
            }
            function getDeclarationSpaces(d) {
                switch (d.kind) {
                    case 203:
                        return 2097152;
                    case 206:
                        return d.name.kind === 8 || ts.getModuleInstanceState(d) !== 0
                            ? 4194304 | 1048576
                            : 4194304;
                    case 202:
                    case 205:
                        return 2097152 | 1048576;
                    case 209:
                        var result = 0;
                        var target = resolveAlias(getSymbolOfNode(d));
                        ts.forEach(target.declarations, function (d) { result |= getDeclarationSpaces(d); });
                        return result;
                    default:
                        return 1048576;
                }
            }
        }
        function checkDecorator(node) {
            var expression = node.expression;
            var exprType = checkExpression(expression);
            switch (node.parent.kind) {
                case 202:
                    var classSymbol = getSymbolOfNode(node.parent);
                    var classConstructorType = getTypeOfSymbol(classSymbol);
                    var classDecoratorType = instantiateSingleCallFunctionType(getGlobalClassDecoratorType(), [classConstructorType]);
                    checkTypeAssignableTo(exprType, classDecoratorType, node);
                    break;
                case 133:
                    checkTypeAssignableTo(exprType, getGlobalPropertyDecoratorType(), node);
                    break;
                case 135:
                case 137:
                case 138:
                    var methodType = getTypeOfNode(node.parent);
                    var methodDecoratorType = instantiateSingleCallFunctionType(getGlobalMethodDecoratorType(), [methodType]);
                    checkTypeAssignableTo(exprType, methodDecoratorType, node);
                    break;
                case 130:
                    checkTypeAssignableTo(exprType, getGlobalParameterDecoratorType(), node);
                    break;
            }
        }
        function checkTypeNodeAsExpression(node) {
            if (node && node.kind === 142) {
                var type = getTypeFromTypeNode(node);
                var shouldCheckIfUnknownType = type === unknownType && compilerOptions.separateCompilation;
                if (!type || (!shouldCheckIfUnknownType && type.flags & (1048703 | 132 | 258))) {
                    return;
                }
                if (shouldCheckIfUnknownType || type.symbol.valueDeclaration) {
                    checkExpressionOrQualifiedName(node.typeName);
                }
            }
        }
        function checkTypeAnnotationAsExpression(node) {
            switch (node.kind) {
                case 133:
                    checkTypeNodeAsExpression(node.type);
                    break;
                case 130:
                    checkTypeNodeAsExpression(node.type);
                    break;
                case 135:
                    checkTypeNodeAsExpression(node.type);
                    break;
                case 137:
                    checkTypeNodeAsExpression(node.type);
                    break;
                case 138:
                    checkTypeNodeAsExpression(getSetAccessorTypeAnnotationNode(node));
                    break;
            }
        }
        function checkParameterTypeAnnotationsAsExpressions(node) {
            for (var _i = 0, _a = node.parameters; _i < _a.length; _i++) {
                var parameter = _a[_i];
                checkTypeAnnotationAsExpression(parameter);
            }
        }
        function checkDecorators(node) {
            if (!node.decorators) {
                return;
            }
            if (!ts.nodeCanBeDecorated(node)) {
                return;
            }
            if (compilerOptions.emitDecoratorMetadata) {
                switch (node.kind) {
                    case 202:
                        var constructor = ts.getFirstConstructorWithBody(node);
                        if (constructor) {
                            checkParameterTypeAnnotationsAsExpressions(constructor);
                        }
                        break;
                    case 135:
                        checkParameterTypeAnnotationsAsExpressions(node);
                    case 138:
                    case 137:
                    case 133:
                    case 130:
                        checkTypeAnnotationAsExpression(node);
                        break;
                }
            }
            emitDecorate = true;
            if (node.kind === 130) {
                emitParam = true;
            }
            ts.forEach(node.decorators, checkDecorator);
        }
        function checkFunctionDeclaration(node) {
            if (produceDiagnostics) {
                checkFunctionLikeDeclaration(node) ||
                    checkGrammarDisallowedModifiersInBlockOrObjectLiteralExpression(node) ||
                    checkGrammarFunctionName(node.name) ||
                    checkGrammarForGenerator(node);
                checkCollisionWithCapturedSuperVariable(node, node.name);
                checkCollisionWithCapturedThisVariable(node, node.name);
                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
            }
        }
        function checkFunctionLikeDeclaration(node) {
            checkGrammarDeclarationNameInStrictMode(node);
            checkDecorators(node);
            checkSignatureDeclaration(node);
            if (node.name && node.name.kind === 128) {
                checkComputedPropertyName(node.name);
            }
            if (!ts.hasDynamicName(node)) {
                var symbol = getSymbolOfNode(node);
                var localSymbol = node.localSymbol || symbol;
                var firstDeclaration = ts.getDeclarationOfKind(localSymbol, node.kind);
                if (node === firstDeclaration) {
                    checkFunctionOrConstructorSymbol(localSymbol);
                }
                if (symbol.parent) {
                    if (ts.getDeclarationOfKind(symbol, node.kind) === node) {
                        checkFunctionOrConstructorSymbol(symbol);
                    }
                }
            }
            checkSourceElement(node.body);
            if (node.type && !isAccessor(node.kind) && !node.asteriskToken) {
                checkIfNonVoidFunctionHasReturnExpressionsOrSingleThrowStatment(node, getTypeFromTypeNode(node.type));
            }
            if (compilerOptions.noImplicitAny && ts.nodeIsMissing(node.body) && !node.type && !isPrivateWithinAmbient(node)) {
                reportImplicitAnyError(node, anyType);
            }
        }
        function checkBlock(node) {
            if (node.kind === 180) {
                checkGrammarStatementInAmbientContext(node);
            }
            ts.forEach(node.statements, checkSourceElement);
            if (ts.isFunctionBlock(node) || node.kind === 207) {
                checkFunctionExpressionBodies(node);
            }
        }
        function checkCollisionWithArgumentsInGeneratedCode(node) {
            if (!ts.hasRestParameters(node) || ts.isInAmbientContext(node) || ts.nodeIsMissing(node.body)) {
                return;
            }
            ts.forEach(node.parameters, function (p) {
                if (p.name && !ts.isBindingPattern(p.name) && p.name.text === argumentsSymbol.name) {
                    error(p, ts.Diagnostics.Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters);
                }
            });
        }
        function needCollisionCheckForIdentifier(node, identifier, name) {
            if (!(identifier && identifier.text === name)) {
                return false;
            }
            if (node.kind === 133 ||
                node.kind === 132 ||
                node.kind === 135 ||
                node.kind === 134 ||
                node.kind === 137 ||
                node.kind === 138) {
                return false;
            }
            if (ts.isInAmbientContext(node)) {
                return false;
            }
            var root = ts.getRootDeclaration(node);
            if (root.kind === 130 && ts.nodeIsMissing(root.parent.body)) {
                return false;
            }
            return true;
        }
        function checkCollisionWithCapturedThisVariable(node, name) {
            if (needCollisionCheckForIdentifier(node, name, "_this")) {
                potentialThisCollisions.push(node);
            }
        }
        function checkIfThisIsCapturedInEnclosingScope(node) {
            var current = node;
            while (current) {
                if (getNodeCheckFlags(current) & 4) {
                    var isDeclaration_1 = node.kind !== 65;
                    if (isDeclaration_1) {
                        error(node.name, ts.Diagnostics.Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference);
                    }
                    else {
                        error(node, ts.Diagnostics.Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference);
                    }
                    return;
                }
                current = current.parent;
            }
        }
        function checkCollisionWithCapturedSuperVariable(node, name) {
            if (!needCollisionCheckForIdentifier(node, name, "_super")) {
                return;
            }
            var enclosingClass = ts.getAncestor(node, 202);
            if (!enclosingClass || ts.isInAmbientContext(enclosingClass)) {
                return;
            }
            if (ts.getClassExtendsHeritageClauseElement(enclosingClass)) {
                var isDeclaration_2 = node.kind !== 65;
                if (isDeclaration_2) {
                    error(node, ts.Diagnostics.Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference);
                }
                else {
                    error(node, ts.Diagnostics.Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference);
                }
            }
        }
        function checkCollisionWithRequireExportsInGeneratedCode(node, name) {
            if (!needCollisionCheckForIdentifier(node, name, "require") && !needCollisionCheckForIdentifier(node, name, "exports")) {
                return;
            }
            if (node.kind === 206 && ts.getModuleInstanceState(node) !== 1) {
                return;
            }
            var parent = getDeclarationContainer(node);
            if (parent.kind === 228 && ts.isExternalModule(parent)) {
                error(name, ts.Diagnostics.Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module, ts.declarationNameToString(name), ts.declarationNameToString(name));
            }
        }
        function checkVarDeclaredNamesNotShadowed(node) {
            // - ScriptBody : StatementList
            // It is a Syntax Error if any element of the LexicallyDeclaredNames of StatementList
            // also occurs in the VarDeclaredNames of StatementList.
            if ((ts.getCombinedNodeFlags(node) & 12288) !== 0 || ts.isParameterDeclaration(node)) {
                return;
            }
            if (node.kind === 199 && !node.initializer) {
                return;
            }
            var symbol = getSymbolOfNode(node);
            if (symbol.flags & 1) {
                var localDeclarationSymbol = resolveName(node, node.name.text, 3, undefined, undefined);
                if (localDeclarationSymbol &&
                    localDeclarationSymbol !== symbol &&
                    localDeclarationSymbol.flags & 2) {
                    if (getDeclarationFlagsFromSymbol(localDeclarationSymbol) & 12288) {
                        var varDeclList = ts.getAncestor(localDeclarationSymbol.valueDeclaration, 200);
                        var container = varDeclList.parent.kind === 181 && varDeclList.parent.parent
                            ? varDeclList.parent.parent
                            : undefined;
                        var namesShareScope = container &&
                            (container.kind === 180 && ts.isFunctionLike(container.parent) ||
                                container.kind === 207 ||
                                container.kind === 206 ||
                                container.kind === 228);
                        if (!namesShareScope) {
                            var name_9 = symbolToString(localDeclarationSymbol);
                            error(node, ts.Diagnostics.Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1, name_9, name_9);
                        }
                    }
                }
            }
        }
        function checkParameterInitializer(node) {
            if (ts.getRootDeclaration(node).kind !== 130) {
                return;
            }
            var func = ts.getContainingFunction(node);
            visit(node.initializer);
            function visit(n) {
                if (n.kind === 65) {
                    var referencedSymbol = getNodeLinks(n).resolvedSymbol;
                    if (referencedSymbol && referencedSymbol !== unknownSymbol && getSymbol(func.locals, referencedSymbol.name, 107455) === referencedSymbol) {
                        if (referencedSymbol.valueDeclaration.kind === 130) {
                            if (referencedSymbol.valueDeclaration === node) {
                                error(n, ts.Diagnostics.Parameter_0_cannot_be_referenced_in_its_initializer, ts.declarationNameToString(node.name));
                                return;
                            }
                            if (referencedSymbol.valueDeclaration.pos < node.pos) {
                                return;
                            }
                        }
                        error(n, ts.Diagnostics.Initializer_of_parameter_0_cannot_reference_identifier_1_declared_after_it, ts.declarationNameToString(node.name), ts.declarationNameToString(n));
                    }
                }
                else {
                    ts.forEachChild(n, visit);
                }
            }
        }
        function checkVariableLikeDeclaration(node) {
            checkGrammarDeclarationNameInStrictMode(node);
            checkDecorators(node);
            checkSourceElement(node.type);
            if (node.name.kind === 128) {
                checkComputedPropertyName(node.name);
                if (node.initializer) {
                    checkExpressionCached(node.initializer);
                }
            }
            if (ts.isBindingPattern(node.name)) {
                ts.forEach(node.name.elements, checkSourceElement);
            }
            if (node.initializer && ts.getRootDeclaration(node).kind === 130 && ts.nodeIsMissing(ts.getContainingFunction(node).body)) {
                error(node, ts.Diagnostics.A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation);
                return;
            }
            if (ts.isBindingPattern(node.name)) {
                if (node.initializer) {
                    checkTypeAssignableTo(checkExpressionCached(node.initializer), getWidenedTypeForVariableLikeDeclaration(node), node, undefined);
                    checkParameterInitializer(node);
                }
                return;
            }
            var symbol = getSymbolOfNode(node);
            var type = getTypeOfVariableOrParameterOrProperty(symbol);
            if (node === symbol.valueDeclaration) {
                if (node.initializer) {
                    checkTypeAssignableTo(checkExpressionCached(node.initializer), type, node, undefined);
                    checkParameterInitializer(node);
                }
            }
            else {
                var declarationType = getWidenedTypeForVariableLikeDeclaration(node);
                if (type !== unknownType && declarationType !== unknownType && !isTypeIdenticalTo(type, declarationType)) {
                    error(node.name, ts.Diagnostics.Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2, ts.declarationNameToString(node.name), typeToString(type), typeToString(declarationType));
                }
                if (node.initializer) {
                    checkTypeAssignableTo(checkExpressionCached(node.initializer), declarationType, node, undefined);
                }
            }
            if (node.kind !== 133 && node.kind !== 132) {
                checkExportsOnMergedDeclarations(node);
                if (node.kind === 199 || node.kind === 153) {
                    checkVarDeclaredNamesNotShadowed(node);
                }
                checkCollisionWithCapturedSuperVariable(node, node.name);
                checkCollisionWithCapturedThisVariable(node, node.name);
                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
            }
        }
        function checkVariableDeclaration(node) {
            checkGrammarVariableDeclaration(node);
            return checkVariableLikeDeclaration(node);
        }
        function checkBindingElement(node) {
            checkGrammarBindingElement(node);
            return checkVariableLikeDeclaration(node);
        }
        function checkVariableStatement(node) {
            checkGrammarDecorators(node) || checkGrammarDisallowedModifiersInBlockOrObjectLiteralExpression(node) || checkGrammarModifiers(node) || checkGrammarVariableDeclarationList(node.declarationList) || checkGrammarForDisallowedLetOrConstStatement(node);
            ts.forEach(node.declarationList.declarations, checkSourceElement);
        }
        function checkGrammarDisallowedModifiersInBlockOrObjectLiteralExpression(node) {
            if (node.modifiers) {
                if (inBlockOrObjectLiteralExpression(node)) {
                    return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
                }
            }
        }
        function inBlockOrObjectLiteralExpression(node) {
            while (node) {
                if (node.kind === 180 || node.kind === 155) {
                    return true;
                }
                node = node.parent;
            }
        }
        function checkExpressionStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            checkExpression(node.expression);
        }
        function checkIfStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            checkExpression(node.expression);
            checkSourceElement(node.thenStatement);
            checkSourceElement(node.elseStatement);
        }
        function checkDoStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            checkSourceElement(node.statement);
            checkExpression(node.expression);
        }
        function checkWhileStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            checkExpression(node.expression);
            checkSourceElement(node.statement);
        }
        function checkForStatement(node) {
            if (!checkGrammarStatementInAmbientContext(node)) {
                if (node.initializer && node.initializer.kind == 200) {
                    checkGrammarVariableDeclarationList(node.initializer);
                }
            }
            if (node.initializer) {
                if (node.initializer.kind === 200) {
                    ts.forEach(node.initializer.declarations, checkVariableDeclaration);
                }
                else {
                    checkExpression(node.initializer);
                }
            }
            if (node.condition)
                checkExpression(node.condition);
            if (node.incrementor)
                checkExpression(node.incrementor);
            checkSourceElement(node.statement);
        }
        function checkForOfStatement(node) {
            checkGrammarForInOrForOfStatement(node);
            if (node.initializer.kind === 200) {
                checkForInOrForOfVariableDeclaration(node);
            }
            else {
                var varExpr = node.initializer;
                var iteratedType = checkRightHandSideOfForOf(node.expression);
                if (varExpr.kind === 154 || varExpr.kind === 155) {
                    checkDestructuringAssignment(varExpr, iteratedType || unknownType);
                }
                else {
                    var leftType = checkExpression(varExpr);
                    checkReferenceExpression(varExpr, ts.Diagnostics.Invalid_left_hand_side_in_for_of_statement, ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_cannot_be_a_previously_defined_constant);
                    if (iteratedType) {
                        checkTypeAssignableTo(iteratedType, leftType, varExpr, undefined);
                    }
                }
            }
            checkSourceElement(node.statement);
        }
        function checkForInStatement(node) {
            checkGrammarForInOrForOfStatement(node);
            if (node.initializer.kind === 200) {
                var variable = node.initializer.declarations[0];
                if (variable && ts.isBindingPattern(variable.name)) {
                    error(variable.name, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern);
                }
                checkForInOrForOfVariableDeclaration(node);
            }
            else {
                var varExpr = node.initializer;
                var leftType = checkExpression(varExpr);
                if (varExpr.kind === 154 || varExpr.kind === 155) {
                    error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern);
                }
                else if (!allConstituentTypesHaveKind(leftType, 1 | 258)) {
                    error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any);
                }
                else {
                    checkReferenceExpression(varExpr, ts.Diagnostics.Invalid_left_hand_side_in_for_in_statement, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_previously_defined_constant);
                }
            }
            var rightType = checkExpression(node.expression);
            if (!allConstituentTypesHaveKind(rightType, 1 | 48128 | 512)) {
                error(node.expression, ts.Diagnostics.The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter);
            }
            checkSourceElement(node.statement);
        }
        function checkForInOrForOfVariableDeclaration(iterationStatement) {
            var variableDeclarationList = iterationStatement.initializer;
            if (variableDeclarationList.declarations.length >= 1) {
                var decl = variableDeclarationList.declarations[0];
                checkVariableDeclaration(decl);
            }
        }
        function checkRightHandSideOfForOf(rhsExpression) {
            var expressionType = getTypeOfExpression(rhsExpression);
            return checkIteratedTypeOrElementType(expressionType, rhsExpression, true);
        }
        function checkIteratedTypeOrElementType(inputType, errorNode, allowStringInput) {
            if (inputType.flags & 1) {
                return inputType;
            }
            if (languageVersion >= 2) {
                return checkIteratedType(inputType, errorNode) || anyType;
            }
            if (allowStringInput) {
                return checkElementTypeOfArrayOrString(inputType, errorNode);
            }
            if (isArrayLikeType(inputType)) {
                var indexType = getIndexTypeOfType(inputType, 1);
                if (indexType) {
                    return indexType;
                }
            }
            error(errorNode, ts.Diagnostics.Type_0_is_not_an_array_type, typeToString(inputType));
            return unknownType;
        }
        function checkIteratedType(iterable, errorNode) {
            ts.Debug.assert(languageVersion >= 2);
            var iteratedType = getIteratedType(iterable, errorNode);
            if (errorNode && iteratedType) {
                checkTypeAssignableTo(iterable, createIterableType(iteratedType), errorNode);
            }
            return iteratedType;
            function getIteratedType(iterable, errorNode) {
                // We want to treat type as an iterable, and get the type it is an iterable of. The iterable
                // must have the following structure (annotated with the names of the variables below):
                //
                // { // iterable
                //     [Symbol.iterator]: { // iteratorFunction
                //         (): { // iterator
                //             next: { // iteratorNextFunction
                //                 (): { // iteratorNextResult
                //                     value: T // iteratorNextValue
                //                 }
                //             }
                //         }
                //     }
                // }
                //
                // T is the type we are after. At every level that involves analyzing return types
                // of signatures, we union the return types of all the signatures.
                //
                // Another thing to note is that at any step of this process, we could run into a dead end,
                // meaning either the property is missing, or we run into the anyType. If either of these things
                // happens, we return undefined to signal that we could not find the iterated type. If a property
                // is missing, and the previous step did not result in 'any', then we also give an error if the
                // caller requested it. Then the caller can decide what to do in the case where there is no iterated
                // type. This is different from returning anyType, because that would signify that we have matched the
                // whole pattern and that T (above) is 'any'.
                if (allConstituentTypesHaveKind(iterable, 1)) {
                    return undefined;
                }
                if ((iterable.flags & 4096) && iterable.target === globalIterableType) {
                    return iterable.typeArguments[0];
                }
                var iteratorFunction = getTypeOfPropertyOfType(iterable, ts.getPropertyNameForKnownSymbolName("iterator"));
                if (iteratorFunction && allConstituentTypesHaveKind(iteratorFunction, 1)) {
                    return undefined;
                }
                var iteratorFunctionSignatures = iteratorFunction ? getSignaturesOfType(iteratorFunction, 0) : emptyArray;
                if (iteratorFunctionSignatures.length === 0) {
                    if (errorNode) {
                        error(errorNode, ts.Diagnostics.Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator);
                    }
                    return undefined;
                }
                var iterator = getUnionType(ts.map(iteratorFunctionSignatures, getReturnTypeOfSignature));
                if (allConstituentTypesHaveKind(iterator, 1)) {
                    return undefined;
                }
                var iteratorNextFunction = getTypeOfPropertyOfType(iterator, "next");
                if (iteratorNextFunction && allConstituentTypesHaveKind(iteratorNextFunction, 1)) {
                    return undefined;
                }
                var iteratorNextFunctionSignatures = iteratorNextFunction ? getSignaturesOfType(iteratorNextFunction, 0) : emptyArray;
                if (iteratorNextFunctionSignatures.length === 0) {
                    if (errorNode) {
                        error(errorNode, ts.Diagnostics.An_iterator_must_have_a_next_method);
                    }
                    return undefined;
                }
                var iteratorNextResult = getUnionType(ts.map(iteratorNextFunctionSignatures, getReturnTypeOfSignature));
                if (allConstituentTypesHaveKind(iteratorNextResult, 1)) {
                    return undefined;
                }
                var iteratorNextValue = getTypeOfPropertyOfType(iteratorNextResult, "value");
                if (!iteratorNextValue) {
                    if (errorNode) {
                        error(errorNode, ts.Diagnostics.The_type_returned_by_the_next_method_of_an_iterator_must_have_a_value_property);
                    }
                    return undefined;
                }
                return iteratorNextValue;
            }
        }
        function checkElementTypeOfArrayOrString(arrayOrStringType, errorNode) {
            ts.Debug.assert(languageVersion < 2);
            var arrayType = removeTypesFromUnionType(arrayOrStringType, 258, true, true);
            var hasStringConstituent = arrayOrStringType !== arrayType;
            var reportedError = false;
            if (hasStringConstituent) {
                if (languageVersion < 1) {
                    error(errorNode, ts.Diagnostics.Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher);
                    reportedError = true;
                }
                if (arrayType === emptyObjectType) {
                    return stringType;
                }
            }
            if (!isArrayLikeType(arrayType)) {
                if (!reportedError) {
                    var diagnostic = hasStringConstituent
                        ? ts.Diagnostics.Type_0_is_not_an_array_type
                        : ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type;
                    error(errorNode, diagnostic, typeToString(arrayType));
                }
                return hasStringConstituent ? stringType : unknownType;
            }
            var arrayElementType = getIndexTypeOfType(arrayType, 1) || unknownType;
            if (hasStringConstituent) {
                if (arrayElementType.flags & 258) {
                    return stringType;
                }
                return getUnionType([arrayElementType, stringType]);
            }
            return arrayElementType;
        }
        function checkBreakOrContinueStatement(node) {
            checkGrammarStatementInAmbientContext(node) || checkGrammarBreakOrContinueStatement(node);
        }
        function isGetAccessorWithAnnotatatedSetAccessor(node) {
            return !!(node.kind === 137 && getSetAccessorTypeAnnotationNode(ts.getDeclarationOfKind(node.symbol, 138)));
        }
        function checkReturnStatement(node) {
            if (!checkGrammarStatementInAmbientContext(node)) {
                var functionBlock = ts.getContainingFunction(node);
                if (!functionBlock) {
                    grammarErrorOnFirstToken(node, ts.Diagnostics.A_return_statement_can_only_be_used_within_a_function_body);
                }
            }
            if (node.expression) {
                var func = ts.getContainingFunction(node);
                if (func) {
                    var returnType = getReturnTypeOfSignature(getSignatureFromDeclaration(func));
                    var exprType = checkExpressionCached(node.expression);
                    if (func.kind === 138) {
                        error(node.expression, ts.Diagnostics.Setters_cannot_return_a_value);
                    }
                    else {
                        if (func.kind === 136) {
                            if (!isTypeAssignableTo(exprType, returnType)) {
                                error(node.expression, ts.Diagnostics.Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class);
                            }
                        }
                        else if (func.type || isGetAccessorWithAnnotatatedSetAccessor(func)) {
                            checkTypeAssignableTo(exprType, returnType, node.expression, undefined);
                        }
                    }
                }
            }
        }
        function checkWithStatement(node) {
            if (!checkGrammarStatementInAmbientContext(node)) {
                if (node.parserContextFlags & 1) {
                    grammarErrorOnFirstToken(node, ts.Diagnostics.with_statements_are_not_allowed_in_strict_mode);
                }
            }
            checkExpression(node.expression);
            error(node.expression, ts.Diagnostics.All_symbols_within_a_with_block_will_be_resolved_to_any);
        }
        function checkSwitchStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            var firstDefaultClause;
            var hasDuplicateDefaultClause = false;
            var expressionType = checkExpression(node.expression);
            ts.forEach(node.caseBlock.clauses, function (clause) {
                if (clause.kind === 222 && !hasDuplicateDefaultClause) {
                    if (firstDefaultClause === undefined) {
                        firstDefaultClause = clause;
                    }
                    else {
                        var sourceFile = ts.getSourceFileOfNode(node);
                        var start = ts.skipTrivia(sourceFile.text, clause.pos);
                        var end = clause.statements.length > 0 ? clause.statements[0].pos : clause.end;
                        grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.A_default_clause_cannot_appear_more_than_once_in_a_switch_statement);
                        hasDuplicateDefaultClause = true;
                    }
                }
                if (produceDiagnostics && clause.kind === 221) {
                    var caseClause = clause;
                    var caseType = checkExpression(caseClause.expression);
                    if (!isTypeAssignableTo(expressionType, caseType)) {
                        checkTypeAssignableTo(caseType, expressionType, caseClause.expression, undefined);
                    }
                }
                ts.forEach(clause.statements, checkSourceElement);
            });
        }
        function checkLabeledStatement(node) {
            if (!checkGrammarStatementInAmbientContext(node)) {
                var current = node.parent;
                while (current) {
                    if (ts.isFunctionLike(current)) {
                        break;
                    }
                    if (current.kind === 195 && current.label.text === node.label.text) {
                        var sourceFile = ts.getSourceFileOfNode(node);
                        grammarErrorOnNode(node.label, ts.Diagnostics.Duplicate_label_0, ts.getTextOfNodeFromSourceText(sourceFile.text, node.label));
                        break;
                    }
                    current = current.parent;
                }
            }
            checkSourceElement(node.statement);
        }
        function checkThrowStatement(node) {
            if (!checkGrammarStatementInAmbientContext(node)) {
                if (node.expression === undefined) {
                    grammarErrorAfterFirstToken(node, ts.Diagnostics.Line_break_not_permitted_here);
                }
            }
            if (node.expression) {
                checkExpression(node.expression);
            }
        }
        function checkTryStatement(node) {
            checkGrammarStatementInAmbientContext(node);
            checkBlock(node.tryBlock);
            var catchClause = node.catchClause;
            if (catchClause) {
                if (catchClause.variableDeclaration) {
                    if (catchClause.variableDeclaration.name.kind !== 65) {
                        grammarErrorOnFirstToken(catchClause.variableDeclaration.name, ts.Diagnostics.Catch_clause_variable_name_must_be_an_identifier);
                    }
                    else if (catchClause.variableDeclaration.type) {
                        grammarErrorOnFirstToken(catchClause.variableDeclaration.type, ts.Diagnostics.Catch_clause_variable_cannot_have_a_type_annotation);
                    }
                    else if (catchClause.variableDeclaration.initializer) {
                        grammarErrorOnFirstToken(catchClause.variableDeclaration.initializer, ts.Diagnostics.Catch_clause_variable_cannot_have_an_initializer);
                    }
                    else {
                        var identifierName = catchClause.variableDeclaration.name.text;
                        var locals = catchClause.block.locals;
                        if (locals && ts.hasProperty(locals, identifierName)) {
                            var localSymbol = locals[identifierName];
                            if (localSymbol && (localSymbol.flags & 2) !== 0) {
                                grammarErrorOnNode(localSymbol.valueDeclaration, ts.Diagnostics.Cannot_redeclare_identifier_0_in_catch_clause, identifierName);
                            }
                        }
                        checkGrammarEvalOrArgumentsInStrictMode(node, catchClause.variableDeclaration.name);
                    }
                }
                checkBlock(catchClause.block);
            }
            if (node.finallyBlock) {
                checkBlock(node.finallyBlock);
            }
        }
        function checkIndexConstraints(type) {
            var declaredNumberIndexer = getIndexDeclarationOfSymbol(type.symbol, 1);
            var declaredStringIndexer = getIndexDeclarationOfSymbol(type.symbol, 0);
            var stringIndexType = getIndexTypeOfType(type, 0);
            var numberIndexType = getIndexTypeOfType(type, 1);
            if (stringIndexType || numberIndexType) {
                ts.forEach(getPropertiesOfObjectType(type), function (prop) {
                    var propType = getTypeOfSymbol(prop);
                    checkIndexConstraintForProperty(prop, propType, type, declaredStringIndexer, stringIndexType, 0);
                    checkIndexConstraintForProperty(prop, propType, type, declaredNumberIndexer, numberIndexType, 1);
                });
                if (type.flags & 1024 && type.symbol.valueDeclaration.kind === 202) {
                    var classDeclaration = type.symbol.valueDeclaration;
                    for (var _i = 0, _a = classDeclaration.members; _i < _a.length; _i++) {
                        var member = _a[_i];
                        if (!(member.flags & 128) && ts.hasDynamicName(member)) {
                            var propType = getTypeOfSymbol(member.symbol);
                            checkIndexConstraintForProperty(member.symbol, propType, type, declaredStringIndexer, stringIndexType, 0);
                            checkIndexConstraintForProperty(member.symbol, propType, type, declaredNumberIndexer, numberIndexType, 1);
                        }
                    }
                }
            }
            var errorNode;
            if (stringIndexType && numberIndexType) {
                errorNode = declaredNumberIndexer || declaredStringIndexer;
                if (!errorNode && (type.flags & 2048)) {
                    var someBaseTypeHasBothIndexers = ts.forEach(getBaseTypes(type), function (base) { return getIndexTypeOfType(base, 0) && getIndexTypeOfType(base, 1); });
                    errorNode = someBaseTypeHasBothIndexers ? undefined : type.symbol.declarations[0];
                }
            }
            if (errorNode && !isTypeAssignableTo(numberIndexType, stringIndexType)) {
                error(errorNode, ts.Diagnostics.Numeric_index_type_0_is_not_assignable_to_string_index_type_1, typeToString(numberIndexType), typeToString(stringIndexType));
            }
            function checkIndexConstraintForProperty(prop, propertyType, containingType, indexDeclaration, indexType, indexKind) {
                if (!indexType) {
                    return;
                }
                if (indexKind === 1 && !isNumericName(prop.valueDeclaration.name)) {
                    return;
                }
                var errorNode;
                if (prop.valueDeclaration.name.kind === 128 || prop.parent === containingType.symbol) {
                    errorNode = prop.valueDeclaration;
                }
                else if (indexDeclaration) {
                    errorNode = indexDeclaration;
                }
                else if (containingType.flags & 2048) {
                    var someBaseClassHasBothPropertyAndIndexer = ts.forEach(getBaseTypes(containingType), function (base) { return getPropertyOfObjectType(base, prop.name) && getIndexTypeOfType(base, indexKind); });
                    errorNode = someBaseClassHasBothPropertyAndIndexer ? undefined : containingType.symbol.declarations[0];
                }
                if (errorNode && !isTypeAssignableTo(propertyType, indexType)) {
                    var errorMessage = indexKind === 0
                        ? ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_string_index_type_2
                        : ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2;
                    error(errorNode, errorMessage, symbolToString(prop), typeToString(propertyType), typeToString(indexType));
                }
            }
        }
        function checkTypeNameIsReserved(name, message) {
            switch (name.text) {
                case "any":
                case "number":
                case "boolean":
                case "string":
                case "symbol":
                case "void":
                    error(name, message, name.text);
            }
        }
        function checkTypeParameters(typeParameterDeclarations) {
            if (typeParameterDeclarations) {
                for (var i = 0, n = typeParameterDeclarations.length; i < n; i++) {
                    var node = typeParameterDeclarations[i];
                    checkTypeParameter(node);
                    if (produceDiagnostics) {
                        for (var j = 0; j < i; j++) {
                            if (typeParameterDeclarations[j].symbol === node.symbol) {
                                error(node.name, ts.Diagnostics.Duplicate_identifier_0, ts.declarationNameToString(node.name));
                            }
                        }
                    }
                }
            }
        }
        function checkClassExpression(node) {
            grammarErrorOnNode(node, ts.Diagnostics.class_expressions_are_not_currently_supported);
            ts.forEach(node.members, checkSourceElement);
            return unknownType;
        }
        function checkClassDeclaration(node) {
            checkGrammarDeclarationNameInStrictMode(node);
            if (node.parent.kind !== 207 && node.parent.kind !== 228) {
                grammarErrorOnNode(node, ts.Diagnostics.class_declarations_are_only_supported_directly_inside_a_module_or_as_a_top_level_declaration);
            }
            if (!node.name && !(node.flags & 256)) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.A_class_declaration_without_the_default_modifier_must_have_a_name);
            }
            checkGrammarClassDeclarationHeritageClauses(node);
            checkDecorators(node);
            if (node.name) {
                checkTypeNameIsReserved(node.name, ts.Diagnostics.Class_name_cannot_be_0);
                checkCollisionWithCapturedThisVariable(node, node.name);
                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
            }
            checkTypeParameters(node.typeParameters);
            checkExportsOnMergedDeclarations(node);
            var symbol = getSymbolOfNode(node);
            var type = getDeclaredTypeOfSymbol(symbol);
            var staticType = getTypeOfSymbol(symbol);
            var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
            if (baseTypeNode) {
                if (!ts.isSupportedExpressionWithTypeArguments(baseTypeNode)) {
                    error(baseTypeNode.expression, ts.Diagnostics.Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_class_extends_clauses);
                }
                emitExtends = emitExtends || !ts.isInAmbientContext(node);
                checkExpressionWithTypeArguments(baseTypeNode);
            }
            var baseTypes = getBaseTypes(type);
            if (baseTypes.length) {
                if (produceDiagnostics) {
                    var baseType = baseTypes[0];
                    checkTypeAssignableTo(type, baseType, node.name || node, ts.Diagnostics.Class_0_incorrectly_extends_base_class_1);
                    var staticBaseType = getTypeOfSymbol(baseType.symbol);
                    checkTypeAssignableTo(staticType, getTypeWithoutConstructors(staticBaseType), node.name || node, ts.Diagnostics.Class_static_side_0_incorrectly_extends_base_class_static_side_1);
                    if (baseType.symbol !== resolveEntityName(baseTypeNode.expression, 107455)) {
                        error(baseTypeNode, ts.Diagnostics.Type_name_0_in_extends_clause_does_not_reference_constructor_function_for_0, typeToString(baseType));
                    }
                    checkKindsOfPropertyMemberOverrides(type, baseType);
                }
            }
            if (baseTypes.length || (baseTypeNode && compilerOptions.separateCompilation)) {
                checkExpressionOrQualifiedName(baseTypeNode.expression);
            }
            var implementedTypeNodes = ts.getClassImplementsHeritageClauseElements(node);
            if (implementedTypeNodes) {
                ts.forEach(implementedTypeNodes, function (typeRefNode) {
                    if (!ts.isSupportedExpressionWithTypeArguments(typeRefNode)) {
                        error(typeRefNode.expression, ts.Diagnostics.A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments);
                    }
                    checkExpressionWithTypeArguments(typeRefNode);
                    if (produceDiagnostics) {
                        var t = getTypeFromTypeNode(typeRefNode);
                        if (t !== unknownType) {
                            var declaredType = (t.flags & 4096) ? t.target : t;
                            if (declaredType.flags & (1024 | 2048)) {
                                checkTypeAssignableTo(type, t, node.name || node, ts.Diagnostics.Class_0_incorrectly_implements_interface_1);
                            }
                            else {
                                error(typeRefNode, ts.Diagnostics.A_class_may_only_implement_another_class_or_interface);
                            }
                        }
                    }
                });
            }
            ts.forEach(node.members, checkSourceElement);
            if (produceDiagnostics) {
                checkIndexConstraints(type);
                checkTypeForDuplicateIndexSignatures(node);
            }
        }
        function getTargetSymbol(s) {
            return s.flags & 16777216 ? getSymbolLinks(s).target : s;
        }
        function checkKindsOfPropertyMemberOverrides(type, baseType) {
            // TypeScript 1.0 spec (April 2014): 8.2.3
            // A derived class inherits all members from its base class it doesn't override.
            // Inheritance means that a derived class implicitly contains all non - overridden members of the base class.
            // Both public and private property members are inherited, but only public property members can be overridden.
            // A property member in a derived class is said to override a property member in a base class
            // when the derived class property member has the same name and kind(instance or static)
            // as the base class property member.
            // The type of an overriding property member must be assignable(section 3.8.4)
            // to the type of the overridden property member, or otherwise a compile - time error occurs.
            // Base class instance member functions can be overridden by derived class instance member functions,
            // but not by other kinds of members.
            // Base class instance member variables and accessors can be overridden by
            // derived class instance member variables and accessors, but not by other kinds of members.
            var baseProperties = getPropertiesOfObjectType(baseType);
            for (var _i = 0; _i < baseProperties.length; _i++) {
                var baseProperty = baseProperties[_i];
                var base = getTargetSymbol(baseProperty);
                if (base.flags & 134217728) {
                    continue;
                }
                var derived = getTargetSymbol(getPropertyOfObjectType(type, base.name));
                if (derived) {
                    var baseDeclarationFlags = getDeclarationFlagsFromSymbol(base);
                    var derivedDeclarationFlags = getDeclarationFlagsFromSymbol(derived);
                    if ((baseDeclarationFlags & 32) || (derivedDeclarationFlags & 32)) {
                        continue;
                    }
                    if ((baseDeclarationFlags & 128) !== (derivedDeclarationFlags & 128)) {
                        continue;
                    }
                    if ((base.flags & derived.flags & 8192) || ((base.flags & 98308) && (derived.flags & 98308))) {
                        continue;
                    }
                    var errorMessage = void 0;
                    if (base.flags & 8192) {
                        if (derived.flags & 98304) {
                            errorMessage = ts.Diagnostics.Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor;
                        }
                        else {
                            ts.Debug.assert((derived.flags & 4) !== 0);
                            errorMessage = ts.Diagnostics.Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_property;
                        }
                    }
                    else if (base.flags & 4) {
                        ts.Debug.assert((derived.flags & 8192) !== 0);
                        errorMessage = ts.Diagnostics.Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function;
                    }
                    else {
                        ts.Debug.assert((base.flags & 98304) !== 0);
                        ts.Debug.assert((derived.flags & 8192) !== 0);
                        errorMessage = ts.Diagnostics.Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function;
                    }
                    error(derived.valueDeclaration.name, errorMessage, typeToString(baseType), symbolToString(base), typeToString(type));
                }
            }
        }
        function isAccessor(kind) {
            return kind === 137 || kind === 138;
        }
        function areTypeParametersIdentical(list1, list2) {
            if (!list1 && !list2) {
                return true;
            }
            if (!list1 || !list2 || list1.length !== list2.length) {
                return false;
            }
            for (var i = 0, len = list1.length; i < len; i++) {
                var tp1 = list1[i];
                var tp2 = list2[i];
                if (tp1.name.text !== tp2.name.text) {
                    return false;
                }
                if (!tp1.constraint && !tp2.constraint) {
                    continue;
                }
                if (!tp1.constraint || !tp2.constraint) {
                    return false;
                }
                if (!isTypeIdenticalTo(getTypeFromTypeNode(tp1.constraint), getTypeFromTypeNode(tp2.constraint))) {
                    return false;
                }
            }
            return true;
        }
        function checkInheritedPropertiesAreIdentical(type, typeNode) {
            var baseTypes = getBaseTypes(type);
            if (baseTypes.length < 2) {
                return true;
            }
            var seen = {};
            ts.forEach(resolveDeclaredMembers(type).declaredProperties, function (p) { seen[p.name] = { prop: p, containingType: type }; });
            var ok = true;
            for (var _i = 0; _i < baseTypes.length; _i++) {
                var base = baseTypes[_i];
                var properties = getPropertiesOfObjectType(base);
                for (var _a = 0; _a < properties.length; _a++) {
                    var prop = properties[_a];
                    if (!ts.hasProperty(seen, prop.name)) {
                        seen[prop.name] = { prop: prop, containingType: base };
                    }
                    else {
                        var existing = seen[prop.name];
                        var isInheritedProperty = existing.containingType !== type;
                        if (isInheritedProperty && !isPropertyIdenticalTo(existing.prop, prop)) {
                            ok = false;
                            var typeName1 = typeToString(existing.containingType);
                            var typeName2 = typeToString(base);
                            var errorInfo = ts.chainDiagnosticMessages(undefined, ts.Diagnostics.Named_property_0_of_types_1_and_2_are_not_identical, symbolToString(prop), typeName1, typeName2);
                            errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Interface_0_cannot_simultaneously_extend_types_1_and_2, typeToString(type), typeName1, typeName2);
                            diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(typeNode, errorInfo));
                        }
                    }
                }
            }
            return ok;
        }
        function checkInterfaceDeclaration(node) {
            checkGrammarDeclarationNameInStrictMode(node) || checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarInterfaceDeclaration(node);
            checkTypeParameters(node.typeParameters);
            if (produceDiagnostics) {
                checkTypeNameIsReserved(node.name, ts.Diagnostics.Interface_name_cannot_be_0);
                checkExportsOnMergedDeclarations(node);
                var symbol = getSymbolOfNode(node);
                var firstInterfaceDecl = ts.getDeclarationOfKind(symbol, 203);
                if (symbol.declarations.length > 1) {
                    if (node !== firstInterfaceDecl && !areTypeParametersIdentical(firstInterfaceDecl.typeParameters, node.typeParameters)) {
                        error(node.name, ts.Diagnostics.All_declarations_of_an_interface_must_have_identical_type_parameters);
                    }
                }
                if (node === firstInterfaceDecl) {
                    var type = getDeclaredTypeOfSymbol(symbol);
                    if (checkInheritedPropertiesAreIdentical(type, node.name)) {
                        ts.forEach(getBaseTypes(type), function (baseType) {
                            checkTypeAssignableTo(type, baseType, node.name, ts.Diagnostics.Interface_0_incorrectly_extends_interface_1);
                        });
                        checkIndexConstraints(type);
                    }
                }
            }
            ts.forEach(ts.getInterfaceBaseTypeNodes(node), function (heritageElement) {
                if (!ts.isSupportedExpressionWithTypeArguments(heritageElement)) {
                    error(heritageElement.expression, ts.Diagnostics.An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments);
                }
                checkExpressionWithTypeArguments(heritageElement);
            });
            ts.forEach(node.members, checkSourceElement);
            if (produceDiagnostics) {
                checkTypeForDuplicateIndexSignatures(node);
            }
        }
        function checkTypeAliasDeclaration(node) {
            checkGrammarDecorators(node) || checkGrammarModifiers(node);
            checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_alias_name_cannot_be_0);
            checkSourceElement(node.type);
        }
        function computeEnumMemberValues(node) {
            var nodeLinks = getNodeLinks(node);
            if (!(nodeLinks.flags & 128)) {
                var enumSymbol = getSymbolOfNode(node);
                var enumType = getDeclaredTypeOfSymbol(enumSymbol);
                var autoValue = 0;
                var ambient = ts.isInAmbientContext(node);
                var enumIsConst = ts.isConst(node);
                ts.forEach(node.members, function (member) {
                    if (member.name.kind !== 128 && isNumericLiteralName(member.name.text)) {
                        error(member.name, ts.Diagnostics.An_enum_member_cannot_have_a_numeric_name);
                    }
                    var initializer = member.initializer;
                    if (initializer) {
                        autoValue = getConstantValueForEnumMemberInitializer(initializer);
                        if (autoValue === undefined) {
                            if (enumIsConst) {
                                error(initializer, ts.Diagnostics.In_const_enum_declarations_member_initializer_must_be_constant_expression);
                            }
                            else if (!ambient) {
                                checkTypeAssignableTo(checkExpression(initializer), enumType, initializer, undefined);
                            }
                        }
                        else if (enumIsConst) {
                            if (isNaN(autoValue)) {
                                error(initializer, ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN);
                            }
                            else if (!isFinite(autoValue)) {
                                error(initializer, ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_a_non_finite_value);
                            }
                        }
                    }
                    else if (ambient && !enumIsConst) {
                        autoValue = undefined;
                    }
                    if (autoValue !== undefined) {
                        getNodeLinks(member).enumMemberValue = autoValue++;
                    }
                });
                nodeLinks.flags |= 128;
            }
            function getConstantValueForEnumMemberInitializer(initializer) {
                return evalConstant(initializer);
                function evalConstant(e) {
                    switch (e.kind) {
                        case 168:
                            var value = evalConstant(e.operand);
                            if (value === undefined) {
                                return undefined;
                            }
                            switch (e.operator) {
                                case 33: return value;
                                case 34: return -value;
                                case 47: return ~value;
                            }
                            return undefined;
                        case 170:
                            var left = evalConstant(e.left);
                            if (left === undefined) {
                                return undefined;
                            }
                            var right = evalConstant(e.right);
                            if (right === undefined) {
                                return undefined;
                            }
                            switch (e.operatorToken.kind) {
                                case 44: return left | right;
                                case 43: return left & right;
                                case 41: return left >> right;
                                case 42: return left >>> right;
                                case 40: return left << right;
                                case 45: return left ^ right;
                                case 35: return left * right;
                                case 36: return left / right;
                                case 33: return left + right;
                                case 34: return left - right;
                                case 37: return left % right;
                            }
                            return undefined;
                        case 7:
                            return +e.text;
                        case 162:
                            return evalConstant(e.expression);
                        case 65:
                        case 157:
                        case 156:
                            var member = initializer.parent;
                            var currentType = getTypeOfSymbol(getSymbolOfNode(member.parent));
                            var enumType;
                            var propertyName;
                            if (e.kind === 65) {
                                enumType = currentType;
                                propertyName = e.text;
                            }
                            else {
                                var expression;
                                if (e.kind === 157) {
                                    if (e.argumentExpression === undefined ||
                                        e.argumentExpression.kind !== 8) {
                                        return undefined;
                                    }
                                    expression = e.expression;
                                    propertyName = e.argumentExpression.text;
                                }
                                else {
                                    expression = e.expression;
                                    propertyName = e.name.text;
                                }
                                var current = expression;
                                while (current) {
                                    if (current.kind === 65) {
                                        break;
                                    }
                                    else if (current.kind === 156) {
                                        current = current.expression;
                                    }
                                    else {
                                        return undefined;
                                    }
                                }
                                enumType = checkExpression(expression);
                                if (!(enumType.symbol && (enumType.symbol.flags & 384))) {
                                    return undefined;
                                }
                            }
                            if (propertyName === undefined) {
                                return undefined;
                            }
                            var property = getPropertyOfObjectType(enumType, propertyName);
                            if (!property || !(property.flags & 8)) {
                                return undefined;
                            }
                            var propertyDecl = property.valueDeclaration;
                            if (member === propertyDecl) {
                                return undefined;
                            }
                            if (!isDefinedBefore(propertyDecl, member)) {
                                return undefined;
                            }
                            return getNodeLinks(propertyDecl).enumMemberValue;
                    }
                }
            }
        }
        function checkEnumDeclaration(node) {
            if (!produceDiagnostics) {
                return;
            }
            checkGrammarDeclarationNameInStrictMode(node) || checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarEnumDeclaration(node);
            checkTypeNameIsReserved(node.name, ts.Diagnostics.Enum_name_cannot_be_0);
            checkCollisionWithCapturedThisVariable(node, node.name);
            checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
            checkExportsOnMergedDeclarations(node);
            computeEnumMemberValues(node);
            var enumIsConst = ts.isConst(node);
            if (compilerOptions.separateCompilation && enumIsConst && ts.isInAmbientContext(node)) {
                error(node.name, ts.Diagnostics.Ambient_const_enums_are_not_allowed_when_the_separateCompilation_flag_is_provided);
            }
            var enumSymbol = getSymbolOfNode(node);
            var firstDeclaration = ts.getDeclarationOfKind(enumSymbol, node.kind);
            if (node === firstDeclaration) {
                if (enumSymbol.declarations.length > 1) {
                    ts.forEach(enumSymbol.declarations, function (decl) {
                        if (ts.isConstEnumDeclaration(decl) !== enumIsConst) {
                            error(decl.name, ts.Diagnostics.Enum_declarations_must_all_be_const_or_non_const);
                        }
                    });
                }
                var seenEnumMissingInitialInitializer = false;
                ts.forEach(enumSymbol.declarations, function (declaration) {
                    if (declaration.kind !== 205) {
                        return false;
                    }
                    var enumDeclaration = declaration;
                    if (!enumDeclaration.members.length) {
                        return false;
                    }
                    var firstEnumMember = enumDeclaration.members[0];
                    if (!firstEnumMember.initializer) {
                        if (seenEnumMissingInitialInitializer) {
                            error(firstEnumMember.name, ts.Diagnostics.In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element);
                        }
                        else {
                            seenEnumMissingInitialInitializer = true;
                        }
                    }
                });
            }
        }
        function getFirstNonAmbientClassOrFunctionDeclaration(symbol) {
            var declarations = symbol.declarations;
            for (var _i = 0; _i < declarations.length; _i++) {
                var declaration = declarations[_i];
                if ((declaration.kind === 202 ||
                    (declaration.kind === 201 && ts.nodeIsPresent(declaration.body))) &&
                    !ts.isInAmbientContext(declaration)) {
                    return declaration;
                }
            }
            return undefined;
        }
        function inSameLexicalScope(node1, node2) {
            var container1 = ts.getEnclosingBlockScopeContainer(node1);
            var container2 = ts.getEnclosingBlockScopeContainer(node2);
            if (isGlobalSourceFile(container1)) {
                return isGlobalSourceFile(container2);
            }
            else if (isGlobalSourceFile(container2)) {
                return false;
            }
            else {
                return container1 === container2;
            }
        }
        function checkModuleDeclaration(node) {
            if (produceDiagnostics) {
                if (!checkGrammarDeclarationNameInStrictMode(node) && !checkGrammarDecorators(node) && !checkGrammarModifiers(node)) {
                    if (!ts.isInAmbientContext(node) && node.name.kind === 8) {
                        grammarErrorOnNode(node.name, ts.Diagnostics.Only_ambient_modules_can_use_quoted_names);
                    }
                }
                checkCollisionWithCapturedThisVariable(node, node.name);
                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
                checkExportsOnMergedDeclarations(node);
                var symbol = getSymbolOfNode(node);
                if (symbol.flags & 512
                    && symbol.declarations.length > 1
                    && !ts.isInAmbientContext(node)
                    && ts.isInstantiatedModule(node, compilerOptions.preserveConstEnums || compilerOptions.separateCompilation)) {
                    var firstNonAmbientClassOrFunc = getFirstNonAmbientClassOrFunctionDeclaration(symbol);
                    if (firstNonAmbientClassOrFunc) {
                        if (ts.getSourceFileOfNode(node) !== ts.getSourceFileOfNode(firstNonAmbientClassOrFunc)) {
                            error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged);
                        }
                        else if (node.pos < firstNonAmbientClassOrFunc.pos) {
                            error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged);
                        }
                    }
                    var mergedClass = ts.getDeclarationOfKind(symbol, 202);
                    if (mergedClass &&
                        inSameLexicalScope(node, mergedClass)) {
                        getNodeLinks(node).flags |= 2048;
                    }
                }
                if (node.name.kind === 8) {
                    if (!isGlobalSourceFile(node.parent)) {
                        error(node.name, ts.Diagnostics.Ambient_modules_cannot_be_nested_in_other_modules);
                    }
                    if (isExternalModuleNameRelative(node.name.text)) {
                        error(node.name, ts.Diagnostics.Ambient_module_declaration_cannot_specify_relative_module_name);
                    }
                }
            }
            checkSourceElement(node.body);
        }
        function getFirstIdentifier(node) {
            while (true) {
                if (node.kind === 127) {
                    node = node.left;
                }
                else if (node.kind === 156) {
                    node = node.expression;
                }
                else {
                    break;
                }
            }
            ts.Debug.assert(node.kind === 65);
            return node;
        }
        function checkExternalImportOrExportDeclaration(node) {
            var moduleName = ts.getExternalModuleName(node);
            if (!ts.nodeIsMissing(moduleName) && moduleName.kind !== 8) {
                error(moduleName, ts.Diagnostics.String_literal_expected);
                return false;
            }
            var inAmbientExternalModule = node.parent.kind === 207 && node.parent.parent.name.kind === 8;
            if (node.parent.kind !== 228 && !inAmbientExternalModule) {
                error(moduleName, node.kind === 216 ?
                    ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace :
                    ts.Diagnostics.Import_declarations_in_a_namespace_cannot_reference_a_module);
                return false;
            }
            if (inAmbientExternalModule && isExternalModuleNameRelative(moduleName.text)) {
                error(node, ts.Diagnostics.Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name);
                return false;
            }
            return true;
        }
        function checkAliasSymbol(node) {
            var symbol = getSymbolOfNode(node);
            var target = resolveAlias(symbol);
            if (target !== unknownSymbol) {
                var excludedMeanings = (symbol.flags & 107455 ? 107455 : 0) |
                    (symbol.flags & 793056 ? 793056 : 0) |
                    (symbol.flags & 1536 ? 1536 : 0);
                if (target.flags & excludedMeanings) {
                    var message = node.kind === 218 ?
                        ts.Diagnostics.Export_declaration_conflicts_with_exported_declaration_of_0 :
                        ts.Diagnostics.Import_declaration_conflicts_with_local_declaration_of_0;
                    error(node, message, symbolToString(symbol));
                }
            }
        }
        function checkImportBinding(node) {
            checkCollisionWithCapturedThisVariable(node, node.name);
            checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
            checkAliasSymbol(node);
        }
        function checkImportDeclaration(node) {
            if (!checkGrammarImportDeclarationNameInStrictMode(node) && !checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 499)) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.An_import_declaration_cannot_have_modifiers);
            }
            if (checkExternalImportOrExportDeclaration(node)) {
                var importClause = node.importClause;
                if (importClause) {
                    if (importClause.name) {
                        checkImportBinding(importClause);
                    }
                    if (importClause.namedBindings) {
                        if (importClause.namedBindings.kind === 212) {
                            checkImportBinding(importClause.namedBindings);
                        }
                        else {
                            ts.forEach(importClause.namedBindings.elements, checkImportBinding);
                        }
                    }
                }
            }
        }
        function checkImportEqualsDeclaration(node) {
            checkGrammarDeclarationNameInStrictMode(node) || checkGrammarDecorators(node) || checkGrammarModifiers(node);
            if (ts.isInternalModuleImportEqualsDeclaration(node) || checkExternalImportOrExportDeclaration(node)) {
                checkImportBinding(node);
                if (node.flags & 1) {
                    markExportAsReferenced(node);
                }
                if (ts.isInternalModuleImportEqualsDeclaration(node)) {
                    var target = resolveAlias(getSymbolOfNode(node));
                    if (target !== unknownSymbol) {
                        if (target.flags & 107455) {
                            var moduleName = getFirstIdentifier(node.moduleReference);
                            if (!(resolveEntityName(moduleName, 107455 | 1536).flags & 1536)) {
                                error(moduleName, ts.Diagnostics.Module_0_is_hidden_by_a_local_declaration_with_the_same_name, ts.declarationNameToString(moduleName));
                            }
                        }
                        if (target.flags & 793056) {
                            checkTypeNameIsReserved(node.name, ts.Diagnostics.Import_name_cannot_be_0);
                        }
                    }
                }
                else {
                    if (languageVersion >= 2) {
                        grammarErrorOnNode(node, ts.Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_or_import_d_from_mod_instead);
                    }
                }
            }
        }
        function checkExportDeclaration(node) {
            if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 499)) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_declaration_cannot_have_modifiers);
            }
            if (!node.moduleSpecifier || checkExternalImportOrExportDeclaration(node)) {
                if (node.exportClause) {
                    ts.forEach(node.exportClause.elements, checkExportSpecifier);
                    var inAmbientExternalModule = node.parent.kind === 207 && node.parent.parent.name.kind === 8;
                    if (node.parent.kind !== 228 && !inAmbientExternalModule) {
                        error(node, ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace);
                    }
                }
                else {
                    var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier);
                    if (moduleSymbol && moduleSymbol.exports["export="]) {
                        error(node.moduleSpecifier, ts.Diagnostics.Module_0_uses_export_and_cannot_be_used_with_export_Asterisk, symbolToString(moduleSymbol));
                    }
                }
            }
        }
        function checkExportSpecifier(node) {
            checkAliasSymbol(node);
            if (!node.parent.parent.moduleSpecifier) {
                markExportAsReferenced(node);
            }
        }
        function checkExportAssignment(node) {
            var container = node.parent.kind === 228 ? node.parent : node.parent.parent;
            if (container.kind === 206 && container.name.kind === 65) {
                error(node, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_namespace);
                return;
            }
            if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 499)) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_assignment_cannot_have_modifiers);
            }
            if (node.expression.kind === 65) {
                markExportAsReferenced(node);
            }
            else {
                checkExpressionCached(node.expression);
            }
            checkExternalModuleExports(container);
            if (node.isExportEquals && !ts.isInAmbientContext(node)) {
                if (languageVersion >= 2) {
                    grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_or_higher_Consider_using_export_default_instead);
                }
                else if (compilerOptions.module === 4) {
                    grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_is_not_supported_when_module_flag_is_system);
                }
            }
        }
        function getModuleStatements(node) {
            if (node.kind === 228) {
                return node.statements;
            }
            if (node.kind === 206 && node.body.kind === 207) {
                return node.body.statements;
            }
            return emptyArray;
        }
        function hasExportedMembers(moduleSymbol) {
            for (var id in moduleSymbol.exports) {
                if (id !== "export=") {
                    return true;
                }
            }
            return false;
        }
        function checkExternalModuleExports(node) {
            var moduleSymbol = getSymbolOfNode(node);
            var links = getSymbolLinks(moduleSymbol);
            if (!links.exportsChecked) {
                var exportEqualsSymbol = moduleSymbol.exports["export="];
                if (exportEqualsSymbol && hasExportedMembers(moduleSymbol)) {
                    var declaration = getDeclarationOfAliasSymbol(exportEqualsSymbol) || exportEqualsSymbol.valueDeclaration;
                    error(declaration, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements);
                }
                links.exportsChecked = true;
            }
        }
        function checkSourceElement(node) {
            if (!node)
                return;
            switch (node.kind) {
                case 129:
                    return checkTypeParameter(node);
                case 130:
                    return checkParameter(node);
                case 133:
                case 132:
                    return checkPropertyDeclaration(node);
                case 143:
                case 144:
                case 139:
                case 140:
                    return checkSignatureDeclaration(node);
                case 141:
                    return checkSignatureDeclaration(node);
                case 135:
                case 134:
                    return checkMethodDeclaration(node);
                case 136:
                    return checkConstructorDeclaration(node);
                case 137:
                case 138:
                    return checkAccessorDeclaration(node);
                case 142:
                    return checkTypeReferenceNode(node);
                case 145:
                    return checkTypeQuery(node);
                case 146:
                    return checkTypeLiteral(node);
                case 147:
                    return checkArrayType(node);
                case 148:
                    return checkTupleType(node);
                case 149:
                    return checkUnionType(node);
                case 150:
                    return checkSourceElement(node.type);
                case 201:
                    return checkFunctionDeclaration(node);
                case 180:
                case 207:
                    return checkBlock(node);
                case 181:
                    return checkVariableStatement(node);
                case 183:
                    return checkExpressionStatement(node);
                case 184:
                    return checkIfStatement(node);
                case 185:
                    return checkDoStatement(node);
                case 186:
                    return checkWhileStatement(node);
                case 187:
                    return checkForStatement(node);
                case 188:
                    return checkForInStatement(node);
                case 189:
                    return checkForOfStatement(node);
                case 190:
                case 191:
                    return checkBreakOrContinueStatement(node);
                case 192:
                    return checkReturnStatement(node);
                case 193:
                    return checkWithStatement(node);
                case 194:
                    return checkSwitchStatement(node);
                case 195:
                    return checkLabeledStatement(node);
                case 196:
                    return checkThrowStatement(node);
                case 197:
                    return checkTryStatement(node);
                case 199:
                    return checkVariableDeclaration(node);
                case 153:
                    return checkBindingElement(node);
                case 202:
                    return checkClassDeclaration(node);
                case 203:
                    return checkInterfaceDeclaration(node);
                case 204:
                    return checkTypeAliasDeclaration(node);
                case 205:
                    return checkEnumDeclaration(node);
                case 206:
                    return checkModuleDeclaration(node);
                case 210:
                    return checkImportDeclaration(node);
                case 209:
                    return checkImportEqualsDeclaration(node);
                case 216:
                    return checkExportDeclaration(node);
                case 215:
                    return checkExportAssignment(node);
                case 182:
                    checkGrammarStatementInAmbientContext(node);
                    return;
                case 198:
                    checkGrammarStatementInAmbientContext(node);
                    return;
                case 219:
                    return checkMissingDeclaration(node);
            }
        }
        function checkFunctionExpressionBodies(node) {
            switch (node.kind) {
                case 163:
                case 164:
                    ts.forEach(node.parameters, checkFunctionExpressionBodies);
                    checkFunctionExpressionOrObjectLiteralMethodBody(node);
                    break;
                case 135:
                case 134:
                    ts.forEach(node.parameters, checkFunctionExpressionBodies);
                    if (ts.isObjectLiteralMethod(node)) {
                        checkFunctionExpressionOrObjectLiteralMethodBody(node);
                    }
                    break;
                case 136:
                case 137:
                case 138:
                case 201:
                    ts.forEach(node.parameters, checkFunctionExpressionBodies);
                    break;
                case 193:
                    checkFunctionExpressionBodies(node.expression);
                    break;
                case 130:
                case 133:
                case 132:
                case 151:
                case 152:
                case 153:
                case 154:
                case 155:
                case 225:
                case 156:
                case 157:
                case 158:
                case 159:
                case 160:
                case 172:
                case 178:
                case 161:
                case 162:
                case 166:
                case 167:
                case 165:
                case 168:
                case 169:
                case 170:
                case 171:
                case 174:
                case 180:
                case 207:
                case 181:
                case 183:
                case 184:
                case 185:
                case 186:
                case 187:
                case 188:
                case 189:
                case 190:
                case 191:
                case 192:
                case 194:
                case 208:
                case 221:
                case 222:
                case 195:
                case 196:
                case 197:
                case 224:
                case 199:
                case 200:
                case 202:
                case 205:
                case 227:
                case 215:
                case 228:
                    ts.forEachChild(node, checkFunctionExpressionBodies);
                    break;
            }
        }
        function checkSourceFile(node) {
            var start = new Date().getTime();
            checkSourceFileWorker(node);
            ts.checkTime += new Date().getTime() - start;
        }
        function checkSourceFileWorker(node) {
            var links = getNodeLinks(node);
            if (!(links.flags & 1)) {
                checkGrammarSourceFile(node);
                emitExtends = false;
                emitDecorate = false;
                emitParam = false;
                potentialThisCollisions.length = 0;
                ts.forEach(node.statements, checkSourceElement);
                checkFunctionExpressionBodies(node);
                if (ts.isExternalModule(node)) {
                    checkExternalModuleExports(node);
                }
                if (potentialThisCollisions.length) {
                    ts.forEach(potentialThisCollisions, checkIfThisIsCapturedInEnclosingScope);
                    potentialThisCollisions.length = 0;
                }
                if (emitExtends) {
                    links.flags |= 8;
                }
                if (emitDecorate) {
                    links.flags |= 512;
                }
                if (emitParam) {
                    links.flags |= 1024;
                }
                links.flags |= 1;
            }
        }
        function getDiagnostics(sourceFile) {
            throwIfNonDiagnosticsProducing();
            if (sourceFile) {
                checkSourceFile(sourceFile);
                return diagnostics.getDiagnostics(sourceFile.fileName);
            }
            ts.forEach(host.getSourceFiles(), checkSourceFile);
            return diagnostics.getDiagnostics();
        }
        function getGlobalDiagnostics() {
            throwIfNonDiagnosticsProducing();
            return diagnostics.getGlobalDiagnostics();
        }
        function throwIfNonDiagnosticsProducing() {
            if (!produceDiagnostics) {
                throw new Error("Trying to get diagnostics from a type checker that does not produce them.");
            }
        }
        function isInsideWithStatementBody(node) {
            if (node) {
                while (node.parent) {
                    if (node.parent.kind === 193 && node.parent.statement === node) {
                        return true;
                    }
                    node = node.parent;
                }
            }
            return false;
        }
        function getSymbolsInScope(location, meaning) {
            var symbols = {};
            var memberFlags = 0;
            if (isInsideWithStatementBody(location)) {
                return [];
            }
            populateSymbols();
            return symbolsToArray(symbols);
            function populateSymbols() {
                while (location) {
                    if (location.locals && !isGlobalSourceFile(location)) {
                        copySymbols(location.locals, meaning);
                    }
                    switch (location.kind) {
                        case 228:
                            if (!ts.isExternalModule(location)) {
                                break;
                            }
                        case 206:
                            copySymbols(getSymbolOfNode(location).exports, meaning & 8914931);
                            break;
                        case 205:
                            copySymbols(getSymbolOfNode(location).exports, meaning & 8);
                            break;
                        case 202:
                        case 203:
                            if (!(memberFlags & 128)) {
                                copySymbols(getSymbolOfNode(location).members, meaning & 793056);
                            }
                            break;
                        case 163:
                            if (location.name) {
                                copySymbol(location.symbol, meaning);
                            }
                            break;
                    }
                    memberFlags = location.flags;
                    location = location.parent;
                }
                copySymbols(globals, meaning);
            }
            function copySymbol(symbol, meaning) {
                if (symbol.flags & meaning) {
                    var id = symbol.name;
                    if (!isReservedMemberName(id) && !ts.hasProperty(symbols, id)) {
                        symbols[id] = symbol;
                    }
                }
            }
            function copySymbols(source, meaning) {
                if (meaning) {
                    for (var id in source) {
                        if (ts.hasProperty(source, id)) {
                            copySymbol(source[id], meaning);
                        }
                    }
                }
            }
            if (isInsideWithStatementBody(location)) {
                return [];
            }
            while (location) {
                if (location.locals && !isGlobalSourceFile(location)) {
                    copySymbols(location.locals, meaning);
                }
                switch (location.kind) {
                    case 228:
                        if (!ts.isExternalModule(location))
                            break;
                    case 206:
                        copySymbols(getSymbolOfNode(location).exports, meaning & 8914931);
                        break;
                    case 205:
                        copySymbols(getSymbolOfNode(location).exports, meaning & 8);
                        break;
                    case 202:
                    case 203:
                        if (!(memberFlags & 128)) {
                            copySymbols(getSymbolOfNode(location).members, meaning & 793056);
                        }
                        break;
                    case 163:
                        if (location.name) {
                            copySymbol(location.symbol, meaning);
                        }
                        break;
                }
                memberFlags = location.flags;
                location = location.parent;
            }
            copySymbols(globals, meaning);
            return symbolsToArray(symbols);
        }
        function isTypeDeclarationName(name) {
            return name.kind == 65 &&
                isTypeDeclaration(name.parent) &&
                name.parent.name === name;
        }
        function isTypeDeclaration(node) {
            switch (node.kind) {
                case 129:
                case 202:
                case 203:
                case 204:
                case 205:
                    return true;
            }
        }
        function isTypeReferenceIdentifier(entityName) {
            var node = entityName;
            while (node.parent && node.parent.kind === 127) {
                node = node.parent;
            }
            return node.parent && node.parent.kind === 142;
        }
        function isHeritageClauseElementIdentifier(entityName) {
            var node = entityName;
            while (node.parent && node.parent.kind === 156) {
                node = node.parent;
            }
            return node.parent && node.parent.kind === 177;
        }
        function isTypeNode(node) {
            if (142 <= node.kind && node.kind <= 150) {
                return true;
            }
            switch (node.kind) {
                case 112:
                case 120:
                case 122:
                case 113:
                case 123:
                    return true;
                case 99:
                    return node.parent.kind !== 167;
                case 8:
                    return node.parent.kind === 130;
                case 177:
                    return true;
                case 65:
                    if (node.parent.kind === 127 && node.parent.right === node) {
                        node = node.parent;
                    }
                    else if (node.parent.kind === 156 && node.parent.name === node) {
                        node = node.parent;
                    }
                case 127:
                case 156:
                    ts.Debug.assert(node.kind === 65 || node.kind === 127 || node.kind === 156, "'node' was expected to be a qualified name, identifier or property access in 'isTypeNode'.");
                    var parent_5 = node.parent;
                    if (parent_5.kind === 145) {
                        return false;
                    }
                    if (142 <= parent_5.kind && parent_5.kind <= 150) {
                        return true;
                    }
                    switch (parent_5.kind) {
                        case 177:
                            return true;
                        case 129:
                            return node === parent_5.constraint;
                        case 133:
                        case 132:
                        case 130:
                        case 199:
                            return node === parent_5.type;
                        case 201:
                        case 163:
                        case 164:
                        case 136:
                        case 135:
                        case 134:
                        case 137:
                        case 138:
                            return node === parent_5.type;
                        case 139:
                        case 140:
                        case 141:
                            return node === parent_5.type;
                        case 161:
                            return node === parent_5.type;
                        case 158:
                        case 159:
                            return parent_5.typeArguments && ts.indexOf(parent_5.typeArguments, node) >= 0;
                        case 160:
                            return false;
                    }
            }
            return false;
        }
        function getLeftSideOfImportEqualsOrExportAssignment(nodeOnRightSide) {
            while (nodeOnRightSide.parent.kind === 127) {
                nodeOnRightSide = nodeOnRightSide.parent;
            }
            if (nodeOnRightSide.parent.kind === 209) {
                return nodeOnRightSide.parent.moduleReference === nodeOnRightSide && nodeOnRightSide.parent;
            }
            if (nodeOnRightSide.parent.kind === 215) {
                return nodeOnRightSide.parent.expression === nodeOnRightSide && nodeOnRightSide.parent;
            }
            return undefined;
        }
        function isInRightSideOfImportOrExportAssignment(node) {
            return getLeftSideOfImportEqualsOrExportAssignment(node) !== undefined;
        }
        function getSymbolOfEntityNameOrPropertyAccessExpression(entityName) {
            if (ts.isDeclarationName(entityName)) {
                return getSymbolOfNode(entityName.parent);
            }
            if (entityName.parent.kind === 215) {
                return resolveEntityName(entityName, 107455 | 793056 | 1536 | 8388608);
            }
            if (entityName.kind !== 156) {
                if (isInRightSideOfImportOrExportAssignment(entityName)) {
                    return getSymbolOfPartOfRightHandSideOfImportEquals(entityName);
                }
            }
            if (ts.isRightSideOfQualifiedNameOrPropertyAccess(entityName)) {
                entityName = entityName.parent;
            }
            if (isHeritageClauseElementIdentifier(entityName)) {
                var meaning = entityName.parent.kind === 177 ? 793056 : 1536;
                meaning |= 8388608;
                return resolveEntityName(entityName, meaning);
            }
            else if (ts.isExpression(entityName)) {
                if (ts.nodeIsMissing(entityName)) {
                    return undefined;
                }
                if (entityName.kind === 65) {
                    var meaning = 107455 | 8388608;
                    return resolveEntityName(entityName, meaning);
                }
                else if (entityName.kind === 156) {
                    var symbol = getNodeLinks(entityName).resolvedSymbol;
                    if (!symbol) {
                        checkPropertyAccessExpression(entityName);
                    }
                    return getNodeLinks(entityName).resolvedSymbol;
                }
                else if (entityName.kind === 127) {
                    var symbol = getNodeLinks(entityName).resolvedSymbol;
                    if (!symbol) {
                        checkQualifiedName(entityName);
                    }
                    return getNodeLinks(entityName).resolvedSymbol;
                }
            }
            else if (isTypeReferenceIdentifier(entityName)) {
                var meaning = entityName.parent.kind === 142 ? 793056 : 1536;
                meaning |= 8388608;
                return resolveEntityName(entityName, meaning);
            }
            return undefined;
        }
        function getSymbolInfo(node) {
            if (isInsideWithStatementBody(node)) {
                return undefined;
            }
            if (ts.isDeclarationName(node)) {
                return getSymbolOfNode(node.parent);
            }
            if (node.kind === 65 && isInRightSideOfImportOrExportAssignment(node)) {
                return node.parent.kind === 215
                    ? getSymbolOfEntityNameOrPropertyAccessExpression(node)
                    : getSymbolOfPartOfRightHandSideOfImportEquals(node);
            }
            switch (node.kind) {
                case 65:
                case 156:
                case 127:
                    return getSymbolOfEntityNameOrPropertyAccessExpression(node);
                case 93:
                case 91:
                    var type = checkExpression(node);
                    return type.symbol;
                case 114:
                    var constructorDeclaration = node.parent;
                    if (constructorDeclaration && constructorDeclaration.kind === 136) {
                        return constructorDeclaration.parent.symbol;
                    }
                    return undefined;
                case 8:
                    var moduleName;
                    if ((ts.isExternalModuleImportEqualsDeclaration(node.parent.parent) &&
                        ts.getExternalModuleImportEqualsDeclarationExpression(node.parent.parent) === node) ||
                        ((node.parent.kind === 210 || node.parent.kind === 216) &&
                            node.parent.moduleSpecifier === node)) {
                        return resolveExternalModuleName(node, node);
                    }
                case 7:
                    if (node.parent.kind == 157 && node.parent.argumentExpression === node) {
                        var objectType = checkExpression(node.parent.expression);
                        if (objectType === unknownType)
                            return undefined;
                        var apparentType = getApparentType(objectType);
                        if (apparentType === unknownType)
                            return undefined;
                        return getPropertyOfType(apparentType, node.text);
                    }
                    break;
            }
            return undefined;
        }
        function getShorthandAssignmentValueSymbol(location) {
            if (location && location.kind === 226) {
                return resolveEntityName(location.name, 107455);
            }
            return undefined;
        }
        function getTypeOfNode(node) {
            if (isInsideWithStatementBody(node)) {
                return unknownType;
            }
            if (isTypeNode(node)) {
                return getTypeFromTypeNode(node);
            }
            if (ts.isExpression(node)) {
                return getTypeOfExpression(node);
            }
            if (isTypeDeclaration(node)) {
                var symbol = getSymbolOfNode(node);
                return getDeclaredTypeOfSymbol(symbol);
            }
            if (isTypeDeclarationName(node)) {
                var symbol = getSymbolInfo(node);
                return symbol && getDeclaredTypeOfSymbol(symbol);
            }
            if (ts.isDeclaration(node)) {
                var symbol = getSymbolOfNode(node);
                return getTypeOfSymbol(symbol);
            }
            if (ts.isDeclarationName(node)) {
                var symbol = getSymbolInfo(node);
                return symbol && getTypeOfSymbol(symbol);
            }
            if (isInRightSideOfImportOrExportAssignment(node)) {
                var symbol = getSymbolInfo(node);
                var declaredType = symbol && getDeclaredTypeOfSymbol(symbol);
                return declaredType !== unknownType ? declaredType : getTypeOfSymbol(symbol);
            }
            return unknownType;
        }
        function getTypeOfExpression(expr) {
            if (ts.isRightSideOfQualifiedNameOrPropertyAccess(expr)) {
                expr = expr.parent;
            }
            return checkExpression(expr);
        }
        function getAugmentedPropertiesOfType(type) {
            type = getApparentType(type);
            var propsByName = createSymbolTable(getPropertiesOfType(type));
            if (getSignaturesOfType(type, 0).length || getSignaturesOfType(type, 1).length) {
                ts.forEach(getPropertiesOfType(globalFunctionType), function (p) {
                    if (!ts.hasProperty(propsByName, p.name)) {
                        propsByName[p.name] = p;
                    }
                });
            }
            return getNamedMembers(propsByName);
        }
        function getRootSymbols(symbol) {
            if (symbol.flags & 268435456) {
                var symbols = [];
                var name_10 = symbol.name;
                ts.forEach(getSymbolLinks(symbol).unionType.types, function (t) {
                    symbols.push(getPropertyOfType(t, name_10));
                });
                return symbols;
            }
            else if (symbol.flags & 67108864) {
                var target = getSymbolLinks(symbol).target;
                if (target) {
                    return [target];
                }
            }
            return [symbol];
        }
        function isExternalModuleSymbol(symbol) {
            return symbol.flags & 512 && symbol.declarations.length === 1 && symbol.declarations[0].kind === 228;
        }
        function getAliasNameSubstitution(symbol, getGeneratedNameForNode) {
            if (languageVersion >= 2) {
                return undefined;
            }
            var node = getDeclarationOfAliasSymbol(symbol);
            if (node) {
                if (node.kind === 211) {
                    var defaultKeyword;
                    if (languageVersion === 0) {
                        defaultKeyword = "[\"default\"]";
                    }
                    else {
                        defaultKeyword = ".default";
                    }
                    return getGeneratedNameForNode(node.parent) + defaultKeyword;
                }
                if (node.kind === 214) {
                    var moduleName = getGeneratedNameForNode(node.parent.parent.parent);
                    var propertyName = node.propertyName || node.name;
                    return moduleName + "." + ts.unescapeIdentifier(propertyName.text);
                }
            }
        }
        function getExportNameSubstitution(symbol, location, getGeneratedNameForNode) {
            if (isExternalModuleSymbol(symbol.parent)) {
                if (languageVersion >= 2 || compilerOptions.module === 4) {
                    return undefined;
                }
                return "exports." + ts.unescapeIdentifier(symbol.name);
            }
            var node = location;
            var containerSymbol = getParentOfSymbol(symbol);
            while (node) {
                if ((node.kind === 206 || node.kind === 205) && getSymbolOfNode(node) === containerSymbol) {
                    return getGeneratedNameForNode(node) + "." + ts.unescapeIdentifier(symbol.name);
                }
                node = node.parent;
            }
        }
        function getExpressionNameSubstitution(node, getGeneratedNameForNode) {
            var symbol = getNodeLinks(node).resolvedSymbol || (ts.isDeclarationName(node) ? getSymbolOfNode(node.parent) : undefined);
            if (symbol) {
                if (symbol.parent) {
                    return getExportNameSubstitution(symbol, node.parent, getGeneratedNameForNode);
                }
                var exportSymbol = getExportSymbolOfValueSymbolIfExported(symbol);
                if (symbol !== exportSymbol && !(exportSymbol.flags & 944)) {
                    return getExportNameSubstitution(exportSymbol, node.parent, getGeneratedNameForNode);
                }
                if (symbol.flags & 8388608) {
                    return getAliasNameSubstitution(symbol, getGeneratedNameForNode);
                }
            }
        }
        function isValueAliasDeclaration(node) {
            switch (node.kind) {
                case 209:
                case 211:
                case 212:
                case 214:
                case 218:
                    return isAliasResolvedToValue(getSymbolOfNode(node));
                case 216:
                    var exportClause = node.exportClause;
                    return exportClause && ts.forEach(exportClause.elements, isValueAliasDeclaration);
                case 215:
                    return node.expression && node.expression.kind === 65 ? isAliasResolvedToValue(getSymbolOfNode(node)) : true;
            }
            return false;
        }
        function isTopLevelValueImportEqualsWithEntityName(node) {
            if (node.parent.kind !== 228 || !ts.isInternalModuleImportEqualsDeclaration(node)) {
                return false;
            }
            var isValue = isAliasResolvedToValue(getSymbolOfNode(node));
            return isValue && node.moduleReference && !ts.nodeIsMissing(node.moduleReference);
        }
        function isAliasResolvedToValue(symbol) {
            var target = resolveAlias(symbol);
            if (target === unknownSymbol && compilerOptions.separateCompilation) {
                return true;
            }
            return target !== unknownSymbol && target && target.flags & 107455 && !isConstEnumOrConstEnumOnlyModule(target);
        }
        function isConstEnumOrConstEnumOnlyModule(s) {
            return isConstEnumSymbol(s) || s.constEnumOnlyModule;
        }
        function isReferencedAliasDeclaration(node, checkChildren) {
            if (ts.isAliasSymbolDeclaration(node)) {
                var symbol = getSymbolOfNode(node);
                if (getSymbolLinks(symbol).referenced) {
                    return true;
                }
            }
            if (checkChildren) {
                return ts.forEachChild(node, function (node) { return isReferencedAliasDeclaration(node, checkChildren); });
            }
            return false;
        }
        function isImplementationOfOverload(node) {
            if (ts.nodeIsPresent(node.body)) {
                var symbol = getSymbolOfNode(node);
                var signaturesOfSymbol = getSignaturesOfSymbol(symbol);
                return signaturesOfSymbol.length > 1 ||
                    (signaturesOfSymbol.length === 1 && signaturesOfSymbol[0].declaration !== node);
            }
            return false;
        }
        function getNodeCheckFlags(node) {
            return getNodeLinks(node).flags;
        }
        function getEnumMemberValue(node) {
            computeEnumMemberValues(node.parent);
            return getNodeLinks(node).enumMemberValue;
        }
        function getConstantValue(node) {
            if (node.kind === 227) {
                return getEnumMemberValue(node);
            }
            var symbol = getNodeLinks(node).resolvedSymbol;
            if (symbol && (symbol.flags & 8)) {
                if (ts.isConstEnumDeclaration(symbol.valueDeclaration.parent)) {
                    return getEnumMemberValue(symbol.valueDeclaration);
                }
            }
            return undefined;
        }
        function serializeEntityName(node, getGeneratedNameForNode, fallbackPath) {
            if (node.kind === 65) {
                var substitution = getExpressionNameSubstitution(node, getGeneratedNameForNode);
                var text = substitution || node.text;
                if (fallbackPath) {
                    fallbackPath.push(text);
                }
                else {
                    return text;
                }
            }
            else {
                var left = serializeEntityName(node.left, getGeneratedNameForNode, fallbackPath);
                var right = serializeEntityName(node.right, getGeneratedNameForNode, fallbackPath);
                if (!fallbackPath) {
                    return left + "." + right;
                }
            }
        }
        function serializeTypeReferenceNode(node, getGeneratedNameForNode) {
            var type = getTypeFromTypeNode(node);
            if (type.flags & 16) {
                return "void 0";
            }
            else if (type.flags & 8) {
                return "Boolean";
            }
            else if (type.flags & 132) {
                return "Number";
            }
            else if (type.flags & 258) {
                return "String";
            }
            else if (type.flags & 8192) {
                return "Array";
            }
            else if (type.flags & 1048576) {
                return "Symbol";
            }
            else if (type === unknownType) {
                var fallbackPath = [];
                serializeEntityName(node.typeName, getGeneratedNameForNode, fallbackPath);
                return fallbackPath;
            }
            else if (type.symbol && type.symbol.valueDeclaration) {
                return serializeEntityName(node.typeName, getGeneratedNameForNode);
            }
            else if (typeHasCallOrConstructSignatures(type)) {
                return "Function";
            }
            return "Object";
        }
        function serializeTypeNode(node, getGeneratedNameForNode) {
            if (node) {
                switch (node.kind) {
                    case 99:
                        return "void 0";
                    case 150:
                        return serializeTypeNode(node.type, getGeneratedNameForNode);
                    case 143:
                    case 144:
                        return "Function";
                    case 147:
                    case 148:
                        return "Array";
                    case 113:
                        return "Boolean";
                    case 122:
                    case 8:
                        return "String";
                    case 120:
                        return "Number";
                    case 142:
                        return serializeTypeReferenceNode(node, getGeneratedNameForNode);
                    case 145:
                    case 146:
                    case 149:
                    case 112:
                        break;
                    default:
                        ts.Debug.fail("Cannot serialize unexpected type node.");
                        break;
                }
            }
            return "Object";
        }
        function serializeTypeOfNode(node, getGeneratedNameForNode) {
            switch (node.kind) {
                case 202: return "Function";
                case 133: return serializeTypeNode(node.type, getGeneratedNameForNode);
                case 130: return serializeTypeNode(node.type, getGeneratedNameForNode);
                case 137: return serializeTypeNode(node.type, getGeneratedNameForNode);
                case 138: return serializeTypeNode(getSetAccessorTypeAnnotationNode(node), getGeneratedNameForNode);
            }
            if (ts.isFunctionLike(node)) {
                return "Function";
            }
            return "void 0";
        }
        function serializeParameterTypesOfNode(node, getGeneratedNameForNode) {
            if (node) {
                var valueDeclaration;
                if (node.kind === 202) {
                    valueDeclaration = ts.getFirstConstructorWithBody(node);
                }
                else if (ts.isFunctionLike(node) && ts.nodeIsPresent(node.body)) {
                    valueDeclaration = node;
                }
                if (valueDeclaration) {
                    var result;
                    var parameters = valueDeclaration.parameters;
                    var parameterCount = parameters.length;
                    if (parameterCount > 0) {
                        result = new Array(parameterCount);
                        for (var i = 0; i < parameterCount; i++) {
                            if (parameters[i].dotDotDotToken) {
                                var parameterType = parameters[i].type;
                                if (parameterType.kind === 147) {
                                    parameterType = parameterType.elementType;
                                }
                                else if (parameterType.kind === 142 && parameterType.typeArguments && parameterType.typeArguments.length === 1) {
                                    parameterType = parameterType.typeArguments[0];
                                }
                                else {
                                    parameterType = undefined;
                                }
                                result[i] = serializeTypeNode(parameterType, getGeneratedNameForNode);
                            }
                            else {
                                result[i] = serializeTypeOfNode(parameters[i], getGeneratedNameForNode);
                            }
                        }
                        return result;
                    }
                }
            }
            return emptyArray;
        }
        function serializeReturnTypeOfNode(node, getGeneratedNameForNode) {
            if (node && ts.isFunctionLike(node)) {
                return serializeTypeNode(node.type, getGeneratedNameForNode);
            }
            return "void 0";
        }
        function writeTypeOfDeclaration(declaration, enclosingDeclaration, flags, writer) {
            var symbol = getSymbolOfNode(declaration);
            var type = symbol && !(symbol.flags & (2048 | 131072))
                ? getTypeOfSymbol(symbol)
                : unknownType;
            getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
        }
        function writeReturnTypeOfSignatureDeclaration(signatureDeclaration, enclosingDeclaration, flags, writer) {
            var signature = getSignatureFromDeclaration(signatureDeclaration);
            getSymbolDisplayBuilder().buildTypeDisplay(getReturnTypeOfSignature(signature), writer, enclosingDeclaration, flags);
        }
        function writeTypeOfExpression(expr, enclosingDeclaration, flags, writer) {
            var type = getTypeOfExpression(expr);
            getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
        }
        function hasGlobalName(name) {
            return ts.hasProperty(globals, name);
        }
        function resolvesToSomeValue(location, name) {
            ts.Debug.assert(!ts.nodeIsSynthesized(location), "resolvesToSomeValue called with a synthesized location");
            return !!resolveName(location, name, 107455, undefined, undefined);
        }
        function getReferencedValueDeclaration(reference) {
            ts.Debug.assert(!ts.nodeIsSynthesized(reference));
            var symbol = getNodeLinks(reference).resolvedSymbol ||
                resolveName(reference, reference.text, 107455 | 8388608, undefined, undefined);
            return symbol && getExportSymbolOfValueSymbolIfExported(symbol).valueDeclaration;
        }
        function getBlockScopedVariableId(n) {
            ts.Debug.assert(!ts.nodeIsSynthesized(n));
            var isVariableDeclarationOrBindingElement = n.parent.kind === 153 || (n.parent.kind === 199 && n.parent.name === n);
            var symbol = (isVariableDeclarationOrBindingElement ? getSymbolOfNode(n.parent) : undefined) ||
                getNodeLinks(n).resolvedSymbol ||
                resolveName(n, n.text, 107455 | 8388608, undefined, undefined);
            var isLetOrConst = symbol &&
                (symbol.flags & 2) &&
                symbol.valueDeclaration.parent.kind !== 224;
            if (isLetOrConst) {
                getSymbolLinks(symbol);
                return symbol.id;
            }
            return undefined;
        }
        function instantiateSingleCallFunctionType(functionType, typeArguments) {
            if (functionType === unknownType) {
                return unknownType;
            }
            var signature = getSingleCallSignature(functionType);
            if (!signature) {
                return unknownType;
            }
            var instantiatedSignature = getSignatureInstantiation(signature, typeArguments);
            return getOrCreateTypeFromSignature(instantiatedSignature);
        }
        function createResolver() {
            return {
                getExpressionNameSubstitution: getExpressionNameSubstitution,
                isValueAliasDeclaration: isValueAliasDeclaration,
                hasGlobalName: hasGlobalName,
                isReferencedAliasDeclaration: isReferencedAliasDeclaration,
                getNodeCheckFlags: getNodeCheckFlags,
                isTopLevelValueImportEqualsWithEntityName: isTopLevelValueImportEqualsWithEntityName,
                isDeclarationVisible: isDeclarationVisible,
                isImplementationOfOverload: isImplementationOfOverload,
                writeTypeOfDeclaration: writeTypeOfDeclaration,
                writeReturnTypeOfSignatureDeclaration: writeReturnTypeOfSignatureDeclaration,
                writeTypeOfExpression: writeTypeOfExpression,
                isSymbolAccessible: isSymbolAccessible,
                isEntityNameVisible: isEntityNameVisible,
                getConstantValue: getConstantValue,
                resolvesToSomeValue: resolvesToSomeValue,
                collectLinkedAliases: collectLinkedAliases,
                getBlockScopedVariableId: getBlockScopedVariableId,
                getReferencedValueDeclaration: getReferencedValueDeclaration,
                serializeTypeOfNode: serializeTypeOfNode,
                serializeParameterTypesOfNode: serializeParameterTypesOfNode,
                serializeReturnTypeOfNode: serializeReturnTypeOfNode
            };
        }
        function initializeTypeChecker() {
            ts.forEach(host.getSourceFiles(), function (file) {
                ts.bindSourceFile(file);
            });
            ts.forEach(host.getSourceFiles(), function (file) {
                if (!ts.isExternalModule(file)) {
                    mergeSymbolTable(globals, file.locals);
                }
            });
            getSymbolLinks(undefinedSymbol).type = undefinedType;
            getSymbolLinks(argumentsSymbol).type = getGlobalType("IArguments");
            getSymbolLinks(unknownSymbol).type = unknownType;
            globals[undefinedSymbol.name] = undefinedSymbol;
            globalArraySymbol = getGlobalTypeSymbol("Array");
            globalArrayType = getTypeOfGlobalSymbol(globalArraySymbol, 1);
            globalObjectType = getGlobalType("Object");
            globalFunctionType = getGlobalType("Function");
            globalStringType = getGlobalType("String");
            globalNumberType = getGlobalType("Number");
            globalBooleanType = getGlobalType("Boolean");
            globalRegExpType = getGlobalType("RegExp");
            getGlobalClassDecoratorType = ts.memoize(function () { return getGlobalType("ClassDecorator"); });
            getGlobalPropertyDecoratorType = ts.memoize(function () { return getGlobalType("PropertyDecorator"); });
            getGlobalMethodDecoratorType = ts.memoize(function () { return getGlobalType("MethodDecorator"); });
            getGlobalParameterDecoratorType = ts.memoize(function () { return getGlobalType("ParameterDecorator"); });
            if (languageVersion >= 2) {
                globalTemplateStringsArrayType = getGlobalType("TemplateStringsArray");
                globalESSymbolType = getGlobalType("Symbol");
                globalESSymbolConstructorSymbol = getGlobalValueSymbol("Symbol");
                globalIterableType = getGlobalType("Iterable", 1);
            }
            else {
                globalTemplateStringsArrayType = unknownType;
                globalESSymbolType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
                globalESSymbolConstructorSymbol = undefined;
            }
            anyArrayType = createArrayType(anyType);
        }
        function isReservedWordInStrictMode(node) {
            return (node.parserContextFlags & 1) &&
                (102 <= node.originalKeywordKind && node.originalKeywordKind <= 110);
        }
        function reportStrictModeGrammarErrorInClassDeclaration(identifier, message, arg0, arg1, arg2) {
            if (ts.getAncestor(identifier, 202) || ts.getAncestor(identifier, 175)) {
                return grammarErrorOnNode(identifier, message, arg0);
            }
            return false;
        }
        function checkGrammarImportDeclarationNameInStrictMode(node) {
            if (node.importClause) {
                var impotClause = node.importClause;
                if (impotClause.namedBindings) {
                    var nameBindings = impotClause.namedBindings;
                    if (nameBindings.kind === 212) {
                        var name_11 = nameBindings.name;
                        if (isReservedWordInStrictMode(name_11)) {
                            var nameText = ts.declarationNameToString(name_11);
                            return grammarErrorOnNode(name_11, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                        }
                    }
                    else if (nameBindings.kind === 213) {
                        var reportError = false;
                        for (var _i = 0, _a = nameBindings.elements; _i < _a.length; _i++) {
                            var element = _a[_i];
                            var name_12 = element.name;
                            if (isReservedWordInStrictMode(name_12)) {
                                var nameText = ts.declarationNameToString(name_12);
                                reportError = reportError || grammarErrorOnNode(name_12, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                            }
                        }
                        return reportError;
                    }
                }
            }
            return false;
        }
        function checkGrammarDeclarationNameInStrictMode(node) {
            var name = node.name;
            if (name && name.kind === 65 && isReservedWordInStrictMode(name)) {
                var nameText = ts.declarationNameToString(name);
                switch (node.kind) {
                    case 130:
                    case 199:
                    case 201:
                    case 129:
                    case 153:
                    case 203:
                    case 204:
                    case 205:
                        return checkGrammarIdentifierInStrictMode(name);
                    case 202:
                        return grammarErrorOnNode(name, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode, nameText);
                    case 206:
                        return grammarErrorOnNode(name, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                    case 209:
                        return grammarErrorOnNode(name, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                }
            }
            return false;
        }
        function checkGrammarTypeReferenceInStrictMode(typeName) {
            if (typeName.kind === 65) {
                checkGrammarTypeNameInStrictMode(typeName);
            }
            else if (typeName.kind === 127) {
                checkGrammarTypeNameInStrictMode(typeName.right);
                checkGrammarTypeReferenceInStrictMode(typeName.left);
            }
        }
        function checkGrammarExpressionWithTypeArgumentsInStrictMode(expression) {
            if (expression && expression.kind === 65) {
                return checkGrammarIdentifierInStrictMode(expression);
            }
            else if (expression && expression.kind === 156) {
                checkGrammarExpressionWithTypeArgumentsInStrictMode(expression.expression);
            }
        }
        function checkGrammarIdentifierInStrictMode(node, nameText) {
            if (node && node.kind === 65 && isReservedWordInStrictMode(node)) {
                if (!nameText) {
                    nameText = ts.declarationNameToString(node);
                }
                var errorReport = reportStrictModeGrammarErrorInClassDeclaration(node, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode, nameText) ||
                    grammarErrorOnNode(node, ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                return errorReport;
            }
            return false;
        }
        function checkGrammarTypeNameInStrictMode(node) {
            if (node && node.kind === 65 && isReservedWordInStrictMode(node)) {
                var nameText = ts.declarationNameToString(node);
                var errorReport = reportStrictModeGrammarErrorInClassDeclaration(node, ts.Diagnostics.Type_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode, nameText) ||
                    grammarErrorOnNode(node, ts.Diagnostics.Type_expected_0_is_a_reserved_word_in_strict_mode, nameText);
                return errorReport;
            }
            return false;
        }
        function checkGrammarDecorators(node) {
            if (!node.decorators) {
                return false;
            }
            if (!ts.nodeCanBeDecorated(node)) {
                return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_are_not_valid_here);
            }
            else if (languageVersion < 1) {
                return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_are_only_available_when_targeting_ECMAScript_5_and_higher);
            }
            else if (node.kind === 137 || node.kind === 138) {
                var accessors = ts.getAllAccessorDeclarations(node.parent.members, node);
                if (accessors.firstAccessor.decorators && node === accessors.secondAccessor) {
                    return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name);
                }
            }
            return false;
        }
        function checkGrammarModifiers(node) {
            switch (node.kind) {
                case 137:
                case 138:
                case 136:
                case 133:
                case 132:
                case 135:
                case 134:
                case 141:
                case 202:
                case 203:
                case 206:
                case 205:
                case 181:
                case 201:
                case 204:
                case 210:
                case 209:
                case 216:
                case 215:
                case 130:
                    break;
                default:
                    return false;
            }
            if (!node.modifiers) {
                return;
            }
            var lastStatic, lastPrivate, lastProtected, lastDeclare;
            var flags = 0;
            for (var _i = 0, _a = node.modifiers; _i < _a.length; _i++) {
                var modifier = _a[_i];
                switch (modifier.kind) {
                    case 108:
                    case 107:
                    case 106:
                        var text = void 0;
                        if (modifier.kind === 108) {
                            text = "public";
                        }
                        else if (modifier.kind === 107) {
                            text = "protected";
                            lastProtected = modifier;
                        }
                        else {
                            text = "private";
                            lastPrivate = modifier;
                        }
                        if (flags & 112) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics.Accessibility_modifier_already_seen);
                        }
                        else if (flags & 128) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "static");
                        }
                        else if (node.parent.kind === 207 || node.parent.kind === 228) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_element, text);
                        }
                        flags |= ts.modifierToFlag(modifier.kind);
                        break;
                    case 109:
                        if (flags & 128) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "static");
                        }
                        else if (node.parent.kind === 207 || node.parent.kind === 228) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_element, "static");
                        }
                        else if (node.kind === 130) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static");
                        }
                        flags |= 128;
                        lastStatic = modifier;
                        break;
                    case 78:
                        if (flags & 1) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "export");
                        }
                        else if (flags & 2) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "declare");
                        }
                        else if (node.parent.kind === 202) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "export");
                        }
                        else if (node.kind === 130) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "export");
                        }
                        flags |= 1;
                        break;
                    case 115:
                        if (flags & 2) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "declare");
                        }
                        else if (node.parent.kind === 202) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "declare");
                        }
                        else if (node.kind === 130) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "declare");
                        }
                        else if (ts.isInAmbientContext(node.parent) && node.parent.kind === 207) {
                            return grammarErrorOnNode(modifier, ts.Diagnostics.A_declare_modifier_cannot_be_used_in_an_already_ambient_context);
                        }
                        flags |= 2;
                        lastDeclare = modifier;
                        break;
                }
            }
            if (node.kind === 136) {
                if (flags & 128) {
                    return grammarErrorOnNode(lastStatic, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "static");
                }
                else if (flags & 64) {
                    return grammarErrorOnNode(lastProtected, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "protected");
                }
                else if (flags & 32) {
                    return grammarErrorOnNode(lastPrivate, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "private");
                }
            }
            else if ((node.kind === 210 || node.kind === 209) && flags & 2) {
                return grammarErrorOnNode(lastDeclare, ts.Diagnostics.A_declare_modifier_cannot_be_used_with_an_import_declaration, "declare");
            }
            else if (node.kind === 203 && flags & 2) {
                return grammarErrorOnNode(lastDeclare, ts.Diagnostics.A_declare_modifier_cannot_be_used_with_an_interface_declaration, "declare");
            }
            else if (node.kind === 130 && (flags & 112) && ts.isBindingPattern(node.name)) {
                return grammarErrorOnNode(node, ts.Diagnostics.A_parameter_property_may_not_be_a_binding_pattern);
            }
        }
        function checkGrammarForDisallowedTrailingComma(list) {
            if (list && list.hasTrailingComma) {
                var start = list.end - ",".length;
                var end = list.end;
                var sourceFile = ts.getSourceFileOfNode(list[0]);
                return grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Trailing_comma_not_allowed);
            }
        }
        function checkGrammarTypeParameterList(node, typeParameters, file) {
            if (checkGrammarForDisallowedTrailingComma(typeParameters)) {
                return true;
            }
            if (typeParameters && typeParameters.length === 0) {
                var start = typeParameters.pos - "<".length;
                var end = ts.skipTrivia(file.text, typeParameters.end) + ">".length;
                return grammarErrorAtPos(file, start, end - start, ts.Diagnostics.Type_parameter_list_cannot_be_empty);
            }
        }
        function checkGrammarParameterList(parameters) {
            if (checkGrammarForDisallowedTrailingComma(parameters)) {
                return true;
            }
            var seenOptionalParameter = false;
            var parameterCount = parameters.length;
            for (var i = 0; i < parameterCount; i++) {
                var parameter = parameters[i];
                if (parameter.dotDotDotToken) {
                    if (i !== (parameterCount - 1)) {
                        return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list);
                    }
                    if (ts.isBindingPattern(parameter.name)) {
                        return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);
                    }
                    if (parameter.questionToken) {
                        return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_rest_parameter_cannot_be_optional);
                    }
                    if (parameter.initializer) {
                        return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_rest_parameter_cannot_have_an_initializer);
                    }
                }
                else if (parameter.questionToken || parameter.initializer) {
                    seenOptionalParameter = true;
                    if (parameter.questionToken && parameter.initializer) {
                        return grammarErrorOnNode(parameter.name, ts.Diagnostics.Parameter_cannot_have_question_mark_and_initializer);
                    }
                }
                else {
                    if (seenOptionalParameter) {
                        return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_required_parameter_cannot_follow_an_optional_parameter);
                    }
                }
            }
        }
        function checkGrammarFunctionLikeDeclaration(node) {
            var file = ts.getSourceFileOfNode(node);
            return checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarTypeParameterList(node, node.typeParameters, file) ||
                checkGrammarParameterList(node.parameters) || checkGrammarArrowFunction(node, file);
        }
        function checkGrammarArrowFunction(node, file) {
            if (node.kind === 164) {
                var arrowFunction = node;
                var startLine = ts.getLineAndCharacterOfPosition(file, arrowFunction.equalsGreaterThanToken.pos).line;
                var endLine = ts.getLineAndCharacterOfPosition(file, arrowFunction.equalsGreaterThanToken.end).line;
                if (startLine !== endLine) {
                    return grammarErrorOnNode(arrowFunction.equalsGreaterThanToken, ts.Diagnostics.Line_terminator_not_permitted_before_arrow);
                }
            }
            return false;
        }
        function checkGrammarIndexSignatureParameters(node) {
            var parameter = node.parameters[0];
            if (node.parameters.length !== 1) {
                if (parameter) {
                    return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter);
                }
                else {
                    return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter);
                }
            }
            if (parameter.dotDotDotToken) {
                return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.An_index_signature_cannot_have_a_rest_parameter);
            }
            if (parameter.flags & 499) {
                return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_accessibility_modifier);
            }
            if (parameter.questionToken) {
                return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.An_index_signature_parameter_cannot_have_a_question_mark);
            }
            if (parameter.initializer) {
                return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_initializer);
            }
            if (!parameter.type) {
                return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_must_have_a_type_annotation);
            }
            if (parameter.type.kind !== 122 && parameter.type.kind !== 120) {
                return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_type_must_be_string_or_number);
            }
            if (!node.type) {
                return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_a_type_annotation);
            }
        }
        function checkGrammarForIndexSignatureModifier(node) {
            if (node.flags & 499) {
                grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_not_permitted_on_index_signature_members);
            }
        }
        function checkGrammarIndexSignature(node) {
            return checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarIndexSignatureParameters(node) || checkGrammarForIndexSignatureModifier(node);
        }
        function checkGrammarForAtLeastOneTypeArgument(node, typeArguments) {
            if (typeArguments && typeArguments.length === 0) {
                var sourceFile = ts.getSourceFileOfNode(node);
                var start = typeArguments.pos - "<".length;
                var end = ts.skipTrivia(sourceFile.text, typeArguments.end) + ">".length;
                return grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Type_argument_list_cannot_be_empty);
            }
        }
        function checkGrammarTypeArguments(node, typeArguments) {
            return checkGrammarForDisallowedTrailingComma(typeArguments) ||
                checkGrammarForAtLeastOneTypeArgument(node, typeArguments);
        }
        function checkGrammarForOmittedArgument(node, arguments) {
            if (arguments) {
                var sourceFile = ts.getSourceFileOfNode(node);
                for (var _i = 0; _i < arguments.length; _i++) {
                    var arg = arguments[_i];
                    if (arg.kind === 176) {
                        return grammarErrorAtPos(sourceFile, arg.pos, 0, ts.Diagnostics.Argument_expression_expected);
                    }
                }
            }
        }
        function checkGrammarArguments(node, arguments) {
            return checkGrammarForDisallowedTrailingComma(arguments) ||
                checkGrammarForOmittedArgument(node, arguments);
        }
        function checkGrammarHeritageClause(node) {
            var types = node.types;
            if (checkGrammarForDisallowedTrailingComma(types)) {
                return true;
            }
            if (types && types.length === 0) {
                var listType = ts.tokenToString(node.token);
                var sourceFile = ts.getSourceFileOfNode(node);
                return grammarErrorAtPos(sourceFile, types.pos, 0, ts.Diagnostics._0_list_cannot_be_empty, listType);
            }
        }
        function checkGrammarClassDeclarationHeritageClauses(node) {
            var seenExtendsClause = false;
            var seenImplementsClause = false;
            if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && node.heritageClauses) {
                for (var _i = 0, _a = node.heritageClauses; _i < _a.length; _i++) {
                    var heritageClause = _a[_i];
                    if (heritageClause.token === 79) {
                        if (seenExtendsClause) {
                            return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen);
                        }
                        if (seenImplementsClause) {
                            return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_must_precede_implements_clause);
                        }
                        if (heritageClause.types.length > 1) {
                            return grammarErrorOnFirstToken(heritageClause.types[1], ts.Diagnostics.Classes_can_only_extend_a_single_class);
                        }
                        seenExtendsClause = true;
                    }
                    else {
                        ts.Debug.assert(heritageClause.token === 102);
                        if (seenImplementsClause) {
                            return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.implements_clause_already_seen);
                        }
                        seenImplementsClause = true;
                    }
                    checkGrammarHeritageClause(heritageClause);
                }
            }
        }
        function checkGrammarInterfaceDeclaration(node) {
            var seenExtendsClause = false;
            if (node.heritageClauses) {
                for (var _i = 0, _a = node.heritageClauses; _i < _a.length; _i++) {
                    var heritageClause = _a[_i];
                    if (heritageClause.token === 79) {
                        if (seenExtendsClause) {
                            return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen);
                        }
                        seenExtendsClause = true;
                    }
                    else {
                        ts.Debug.assert(heritageClause.token === 102);
                        return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.Interface_declaration_cannot_have_implements_clause);
                    }
                    checkGrammarHeritageClause(heritageClause);
                }
            }
            return false;
        }
        function checkGrammarComputedPropertyName(node) {
            if (node.kind !== 128) {
                return false;
            }
            var computedPropertyName = node;
            if (computedPropertyName.expression.kind === 170 && computedPropertyName.expression.operatorToken.kind === 23) {
                return grammarErrorOnNode(computedPropertyName.expression, ts.Diagnostics.A_comma_expression_is_not_allowed_in_a_computed_property_name);
            }
        }
        function checkGrammarForGenerator(node) {
            if (node.asteriskToken) {
                return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.Generators_are_not_currently_supported);
            }
        }
        function checkGrammarFunctionName(name) {
            return checkGrammarEvalOrArgumentsInStrictMode(name, name);
        }
        function checkGrammarForInvalidQuestionMark(node, questionToken, message) {
            if (questionToken) {
                return grammarErrorOnNode(questionToken, message);
            }
        }
        function checkGrammarObjectLiteralExpression(node) {
            var seen = {};
            var Property = 1;
            var GetAccessor = 2;
            var SetAccesor = 4;
            var GetOrSetAccessor = GetAccessor | SetAccesor;
            var inStrictMode = (node.parserContextFlags & 1) !== 0;
            for (var _i = 0, _a = node.properties; _i < _a.length; _i++) {
                var prop = _a[_i];
                var name_13 = prop.name;
                if (prop.kind === 176 ||
                    name_13.kind === 128) {
                    checkGrammarComputedPropertyName(name_13);
                    continue;
                }
                var currentKind = void 0;
                if (prop.kind === 225 || prop.kind === 226) {
                    checkGrammarForInvalidQuestionMark(prop, prop.questionToken, ts.Diagnostics.An_object_member_cannot_be_declared_optional);
                    if (name_13.kind === 7) {
                        checkGrammarNumericLiteral(name_13);
                    }
                    currentKind = Property;
                }
                else if (prop.kind === 135) {
                    currentKind = Property;
                }
                else if (prop.kind === 137) {
                    currentKind = GetAccessor;
                }
                else if (prop.kind === 138) {
                    currentKind = SetAccesor;
                }
                else {
                    ts.Debug.fail("Unexpected syntax kind:" + prop.kind);
                }
                if (!ts.hasProperty(seen, name_13.text)) {
                    seen[name_13.text] = currentKind;
                }
                else {
                    var existingKind = seen[name_13.text];
                    if (currentKind === Property && existingKind === Property) {
                        if (inStrictMode) {
                            grammarErrorOnNode(name_13, ts.Diagnostics.An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode);
                        }
                    }
                    else if ((currentKind & GetOrSetAccessor) && (existingKind & GetOrSetAccessor)) {
                        if (existingKind !== GetOrSetAccessor && currentKind !== existingKind) {
                            seen[name_13.text] = currentKind | existingKind;
                        }
                        else {
                            return grammarErrorOnNode(name_13, ts.Diagnostics.An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name);
                        }
                    }
                    else {
                        return grammarErrorOnNode(name_13, ts.Diagnostics.An_object_literal_cannot_have_property_and_accessor_with_the_same_name);
                    }
                }
            }
        }
        function checkGrammarForInOrForOfStatement(forInOrOfStatement) {
            if (checkGrammarStatementInAmbientContext(forInOrOfStatement)) {
                return true;
            }
            if (forInOrOfStatement.initializer.kind === 200) {
                var variableList = forInOrOfStatement.initializer;
                if (!checkGrammarVariableDeclarationList(variableList)) {
                    if (variableList.declarations.length > 1) {
                        var diagnostic = forInOrOfStatement.kind === 188
                            ? ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement
                            : ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement;
                        return grammarErrorOnFirstToken(variableList.declarations[1], diagnostic);
                    }
                    var firstDeclaration = variableList.declarations[0];
                    if (firstDeclaration.initializer) {
                        var diagnostic = forInOrOfStatement.kind === 188
                            ? ts.Diagnostics.The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer
                            : ts.Diagnostics.The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer;
                        return grammarErrorOnNode(firstDeclaration.name, diagnostic);
                    }
                    if (firstDeclaration.type) {
                        var diagnostic = forInOrOfStatement.kind === 188
                            ? ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation
                            : ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation;
                        return grammarErrorOnNode(firstDeclaration, diagnostic);
                    }
                }
            }
            return false;
        }
        function checkGrammarAccessor(accessor) {
            var kind = accessor.kind;
            if (languageVersion < 1) {
                return grammarErrorOnNode(accessor.name, ts.Diagnostics.Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher);
            }
            else if (ts.isInAmbientContext(accessor)) {
                return grammarErrorOnNode(accessor.name, ts.Diagnostics.An_accessor_cannot_be_declared_in_an_ambient_context);
            }
            else if (accessor.body === undefined) {
                return grammarErrorAtPos(ts.getSourceFileOfNode(accessor), accessor.end - 1, ";".length, ts.Diagnostics._0_expected, "{");
            }
            else if (accessor.typeParameters) {
                return grammarErrorOnNode(accessor.name, ts.Diagnostics.An_accessor_cannot_have_type_parameters);
            }
            else if (kind === 137 && accessor.parameters.length) {
                return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_get_accessor_cannot_have_parameters);
            }
            else if (kind === 138) {
                if (accessor.type) {
                    return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_cannot_have_a_return_type_annotation);
                }
                else if (accessor.parameters.length !== 1) {
                    return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_must_have_exactly_one_parameter);
                }
                else {
                    var parameter = accessor.parameters[0];
                    if (parameter.dotDotDotToken) {
                        return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_set_accessor_cannot_have_rest_parameter);
                    }
                    else if (parameter.flags & 499) {
                        return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_parameter_property_is_only_allowed_in_a_constructor_implementation);
                    }
                    else if (parameter.questionToken) {
                        return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_set_accessor_cannot_have_an_optional_parameter);
                    }
                    else if (parameter.initializer) {
                        return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_parameter_cannot_have_an_initializer);
                    }
                }
            }
        }
        function checkGrammarForNonSymbolComputedProperty(node, message) {
            if (node.kind === 128 && !ts.isWellKnownSymbolSyntactically(node.expression)) {
                return grammarErrorOnNode(node, message);
            }
        }
        function checkGrammarMethod(node) {
            if (checkGrammarDisallowedModifiersInBlockOrObjectLiteralExpression(node) ||
                checkGrammarFunctionLikeDeclaration(node) ||
                checkGrammarForGenerator(node)) {
                return true;
            }
            if (node.parent.kind === 155) {
                if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional)) {
                    return true;
                }
                else if (node.body === undefined) {
                    return grammarErrorAtPos(getSourceFile(node), node.end - 1, ";".length, ts.Diagnostics._0_expected, "{");
                }
            }
            if (node.parent.kind === 202) {
                if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional)) {
                    return true;
                }
                if (ts.isInAmbientContext(node)) {
                    return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_ambient_context_must_directly_refer_to_a_built_in_symbol);
                }
                else if (!node.body) {
                    return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_method_overload_must_directly_refer_to_a_built_in_symbol);
                }
            }
            else if (node.parent.kind === 203) {
                return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol);
            }
            else if (node.parent.kind === 146) {
                return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol);
            }
        }
        function isIterationStatement(node, lookInLabeledStatements) {
            switch (node.kind) {
                case 187:
                case 188:
                case 189:
                case 185:
                case 186:
                    return true;
                case 195:
                    return lookInLabeledStatements && isIterationStatement(node.statement, lookInLabeledStatements);
            }
            return false;
        }
        function checkGrammarBreakOrContinueStatement(node) {
            var current = node;
            while (current) {
                if (ts.isFunctionLike(current)) {
                    return grammarErrorOnNode(node, ts.Diagnostics.Jump_target_cannot_cross_function_boundary);
                }
                switch (current.kind) {
                    case 195:
                        if (node.label && current.label.text === node.label.text) {
                            var isMisplacedContinueLabel = node.kind === 190
                                && !isIterationStatement(current.statement, true);
                            if (isMisplacedContinueLabel) {
                                return grammarErrorOnNode(node, ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement);
                            }
                            return false;
                        }
                        break;
                    case 194:
                        if (node.kind === 191 && !node.label) {
                            return false;
                        }
                        break;
                    default:
                        if (isIterationStatement(current, false) && !node.label) {
                            return false;
                        }
                        break;
                }
                current = current.parent;
            }
            if (node.label) {
                var message = node.kind === 191
                    ? ts.Diagnostics.A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement
                    : ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement;
                return grammarErrorOnNode(node, message);
            }
            else {
                var message = node.kind === 191
                    ? ts.Diagnostics.A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement
                    : ts.Diagnostics.A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement;
                return grammarErrorOnNode(node, message);
            }
        }
        function checkGrammarBindingElement(node) {
            if (node.dotDotDotToken) {
                var elements = node.parent.elements;
                if (node !== ts.lastOrUndefined(elements)) {
                    return grammarErrorOnNode(node, ts.Diagnostics.A_rest_element_must_be_last_in_an_array_destructuring_pattern);
                }
                if (node.name.kind === 152 || node.name.kind === 151) {
                    return grammarErrorOnNode(node.name, ts.Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);
                }
                if (node.initializer) {
                    return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.initializer.pos - 1, 1, ts.Diagnostics.A_rest_element_cannot_have_an_initializer);
                }
            }
            return checkGrammarEvalOrArgumentsInStrictMode(node, node.name);
        }
        function checkGrammarVariableDeclaration(node) {
            if (node.parent.parent.kind !== 188 && node.parent.parent.kind !== 189) {
                if (ts.isInAmbientContext(node)) {
                    if (node.initializer) {
                        var equalsTokenLength = "=".length;
                        return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.initializer.pos - equalsTokenLength, equalsTokenLength, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts);
                    }
                }
                else if (!node.initializer) {
                    if (ts.isBindingPattern(node.name) && !ts.isBindingPattern(node.parent)) {
                        return grammarErrorOnNode(node, ts.Diagnostics.A_destructuring_declaration_must_have_an_initializer);
                    }
                    if (ts.isConst(node)) {
                        return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_must_be_initialized);
                    }
                }
            }
            var checkLetConstNames = languageVersion >= 2 && (ts.isLet(node) || ts.isConst(node));
            return (checkLetConstNames && checkGrammarNameInLetOrConstDeclarations(node.name)) ||
                checkGrammarEvalOrArgumentsInStrictMode(node, node.name);
        }
        function checkGrammarNameInLetOrConstDeclarations(name) {
            if (name.kind === 65) {
                if (name.text === "let") {
                    return grammarErrorOnNode(name, ts.Diagnostics.let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations);
                }
            }
            else {
                var elements = name.elements;
                for (var _i = 0; _i < elements.length; _i++) {
                    var element = elements[_i];
                    if (element.kind !== 176) {
                        checkGrammarNameInLetOrConstDeclarations(element.name);
                    }
                }
            }
        }
        function checkGrammarVariableDeclarationList(declarationList) {
            var declarations = declarationList.declarations;
            if (checkGrammarForDisallowedTrailingComma(declarationList.declarations)) {
                return true;
            }
            if (!declarationList.declarations.length) {
                return grammarErrorAtPos(ts.getSourceFileOfNode(declarationList), declarations.pos, declarations.end - declarations.pos, ts.Diagnostics.Variable_declaration_list_cannot_be_empty);
            }
        }
        function allowLetAndConstDeclarations(parent) {
            switch (parent.kind) {
                case 184:
                case 185:
                case 186:
                case 193:
                case 187:
                case 188:
                case 189:
                    return false;
                case 195:
                    return allowLetAndConstDeclarations(parent.parent);
            }
            return true;
        }
        function checkGrammarForDisallowedLetOrConstStatement(node) {
            if (!allowLetAndConstDeclarations(node.parent)) {
                if (ts.isLet(node.declarationList)) {
                    return grammarErrorOnNode(node, ts.Diagnostics.let_declarations_can_only_be_declared_inside_a_block);
                }
                else if (ts.isConst(node.declarationList)) {
                    return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_can_only_be_declared_inside_a_block);
                }
            }
        }
        function isIntegerLiteral(expression) {
            if (expression.kind === 168) {
                var unaryExpression = expression;
                if (unaryExpression.operator === 33 || unaryExpression.operator === 34) {
                    expression = unaryExpression.operand;
                }
            }
            if (expression.kind === 7) {
                return /^[0-9]+([eE]\+?[0-9]+)?$/.test(expression.text);
            }
            return false;
        }
        function checkGrammarEnumDeclaration(enumDecl) {
            var enumIsConst = (enumDecl.flags & 8192) !== 0;
            var hasError = false;
            if (!enumIsConst) {
                var inConstantEnumMemberSection = true;
                var inAmbientContext = ts.isInAmbientContext(enumDecl);
                for (var _i = 0, _a = enumDecl.members; _i < _a.length; _i++) {
                    var node = _a[_i];
                    if (node.name.kind === 128) {
                        hasError = grammarErrorOnNode(node.name, ts.Diagnostics.Computed_property_names_are_not_allowed_in_enums);
                    }
                    else if (inAmbientContext) {
                        if (node.initializer && !isIntegerLiteral(node.initializer)) {
                            hasError = grammarErrorOnNode(node.name, ts.Diagnostics.Ambient_enum_elements_can_only_have_integer_literal_initializers) || hasError;
                        }
                    }
                    else if (node.initializer) {
                        inConstantEnumMemberSection = isIntegerLiteral(node.initializer);
                    }
                    else if (!inConstantEnumMemberSection) {
                        hasError = grammarErrorOnNode(node.name, ts.Diagnostics.Enum_member_must_have_initializer) || hasError;
                    }
                }
            }
            return hasError;
        }
        function hasParseDiagnostics(sourceFile) {
            return sourceFile.parseDiagnostics.length > 0;
        }
        function grammarErrorOnFirstToken(node, message, arg0, arg1, arg2) {
            var sourceFile = ts.getSourceFileOfNode(node);
            if (!hasParseDiagnostics(sourceFile)) {
                var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos);
                diagnostics.add(ts.createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2));
                return true;
            }
        }
        function grammarErrorAtPos(sourceFile, start, length, message, arg0, arg1, arg2) {
            if (!hasParseDiagnostics(sourceFile)) {
                diagnostics.add(ts.createFileDiagnostic(sourceFile, start, length, message, arg0, arg1, arg2));
                return true;
            }
        }
        function grammarErrorOnNode(node, message, arg0, arg1, arg2) {
            var sourceFile = ts.getSourceFileOfNode(node);
            if (!hasParseDiagnostics(sourceFile)) {
                diagnostics.add(ts.createDiagnosticForNode(node, message, arg0, arg1, arg2));
                return true;
            }
        }
        function checkGrammarEvalOrArgumentsInStrictMode(contextNode, name) {
            if (name && name.kind === 65) {
                var identifier = name;
                if (contextNode && (contextNode.parserContextFlags & 1) && isEvalOrArgumentsIdentifier(identifier)) {
                    var nameText = ts.declarationNameToString(identifier);
                    var reportErrorInClassDeclaration = reportStrictModeGrammarErrorInClassDeclaration(identifier, ts.Diagnostics.Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode, nameText);
                    if (!reportErrorInClassDeclaration) {
                        return grammarErrorOnNode(identifier, ts.Diagnostics.Invalid_use_of_0_in_strict_mode, nameText);
                    }
                    return reportErrorInClassDeclaration;
                }
            }
        }
        function isEvalOrArgumentsIdentifier(node) {
            return node.kind === 65 &&
                (node.text === "eval" || node.text === "arguments");
        }
        function checkGrammarConstructorTypeParameters(node) {
            if (node.typeParameters) {
                return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.typeParameters.pos, node.typeParameters.end - node.typeParameters.pos, ts.Diagnostics.Type_parameters_cannot_appear_on_a_constructor_declaration);
            }
        }
        function checkGrammarConstructorTypeAnnotation(node) {
            if (node.type) {
                return grammarErrorOnNode(node.type, ts.Diagnostics.Type_annotation_cannot_appear_on_a_constructor_declaration);
            }
        }
        function checkGrammarProperty(node) {
            if (node.parent.kind === 202) {
                if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional) ||
                    checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_class_property_declaration_must_directly_refer_to_a_built_in_symbol)) {
                    return true;
                }
            }
            else if (node.parent.kind === 203) {
                if (checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol)) {
                    return true;
                }
            }
            else if (node.parent.kind === 146) {
                if (checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol)) {
                    return true;
                }
            }
            if (ts.isInAmbientContext(node) && node.initializer) {
                return grammarErrorOnFirstToken(node.initializer, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts);
            }
        }
        function checkGrammarTopLevelElementForRequiredDeclareModifier(node) {
            if (node.kind === 203 ||
                node.kind === 210 ||
                node.kind === 209 ||
                node.kind === 216 ||
                node.kind === 215 ||
                (node.flags & 2) ||
                (node.flags & (1 | 256))) {
                return false;
            }
            return grammarErrorOnFirstToken(node, ts.Diagnostics.A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file);
        }
        function checkGrammarTopLevelElementsForRequiredDeclareModifier(file) {
            for (var _i = 0, _a = file.statements; _i < _a.length; _i++) {
                var decl = _a[_i];
                if (ts.isDeclaration(decl) || decl.kind === 181) {
                    if (checkGrammarTopLevelElementForRequiredDeclareModifier(decl)) {
                        return true;
                    }
                }
            }
        }
        function checkGrammarSourceFile(node) {
            return ts.isInAmbientContext(node) && checkGrammarTopLevelElementsForRequiredDeclareModifier(node);
        }
        function checkGrammarStatementInAmbientContext(node) {
            if (ts.isInAmbientContext(node)) {
                if (isAccessor(node.parent.kind)) {
                    return getNodeLinks(node).hasReportedStatementInAmbientContext = true;
                }
                var links = getNodeLinks(node);
                if (!links.hasReportedStatementInAmbientContext && ts.isFunctionLike(node.parent)) {
                    return getNodeLinks(node).hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.An_implementation_cannot_be_declared_in_ambient_contexts);
                }
                if (node.parent.kind === 180 || node.parent.kind === 207 || node.parent.kind === 228) {
                    var links_1 = getNodeLinks(node.parent);
                    if (!links_1.hasReportedStatementInAmbientContext) {
                        return links_1.hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.Statements_are_not_allowed_in_ambient_contexts);
                    }
                }
                else {
                }
            }
        }
        function checkGrammarNumericLiteral(node) {
            if (node.flags & 16384) {
                if (node.parserContextFlags & 1) {
                    return grammarErrorOnNode(node, ts.Diagnostics.Octal_literals_are_not_allowed_in_strict_mode);
                }
                else if (languageVersion >= 1) {
                    return grammarErrorOnNode(node, ts.Diagnostics.Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher);
                }
            }
        }
        function grammarErrorAfterFirstToken(node, message, arg0, arg1, arg2) {
            var sourceFile = ts.getSourceFileOfNode(node);
            if (!hasParseDiagnostics(sourceFile)) {
                var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos);
                diagnostics.add(ts.createFileDiagnostic(sourceFile, ts.textSpanEnd(span), 0, message, arg0, arg1, arg2));
                return true;
            }
        }
        initializeTypeChecker();
        return checker;
    }
    ts.createTypeChecker = createTypeChecker;
})(ts || (ts = {}));
/// <reference path="checker.ts"/>
var ts;
(function (ts) {
    function getDeclarationDiagnostics(host, resolver, targetSourceFile) {
        var diagnostics = [];
        var jsFilePath = ts.getOwnEmitOutputFilePath(targetSourceFile, host, ".js");
        emitDeclarations(host, resolver, diagnostics, jsFilePath, targetSourceFile);
        return diagnostics;
    }
    ts.getDeclarationDiagnostics = getDeclarationDiagnostics;
    function emitDeclarations(host, resolver, diagnostics, jsFilePath, root) {
        var newLine = host.getNewLine();
        var compilerOptions = host.getCompilerOptions();
        var languageVersion = compilerOptions.target || 0;
        var write;
        var writeLine;
        var increaseIndent;
        var decreaseIndent;
        var writeTextOfNode;
        var writer = createAndSetNewTextWriterWithSymbolWriter();
        var enclosingDeclaration;
        var currentSourceFile;
        var reportedDeclarationError = false;
        var emitJsDocComments = compilerOptions.removeComments ? function (declaration) { } : writeJsDocComments;
        var emit = compilerOptions.stripInternal ? stripInternal : emitNode;
        var moduleElementDeclarationEmitInfo = [];
        var asynchronousSubModuleDeclarationEmitInfo;
        var referencePathsOutput = "";
        if (root) {
            if (!compilerOptions.noResolve) {
                var addedGlobalFileReference = false;
                ts.forEach(root.referencedFiles, function (fileReference) {
                    var referencedFile = ts.tryResolveScriptReference(host, root, fileReference);
                    if (referencedFile && ((referencedFile.flags & 2048) ||
                        ts.shouldEmitToOwnFile(referencedFile, compilerOptions) ||
                        !addedGlobalFileReference)) {
                        writeReferencePath(referencedFile);
                        if (!ts.isExternalModuleOrDeclarationFile(referencedFile)) {
                            addedGlobalFileReference = true;
                        }
                    }
                });
            }
            emitSourceFile(root);
            if (moduleElementDeclarationEmitInfo.length) {
                var oldWriter = writer;
                ts.forEach(moduleElementDeclarationEmitInfo, function (aliasEmitInfo) {
                    if (aliasEmitInfo.isVisible) {
                        ts.Debug.assert(aliasEmitInfo.node.kind === 210);
                        createAndSetNewTextWriterWithSymbolWriter();
                        ts.Debug.assert(aliasEmitInfo.indent === 0);
                        writeImportDeclaration(aliasEmitInfo.node);
                        aliasEmitInfo.asynchronousOutput = writer.getText();
                    }
                });
                setWriter(oldWriter);
            }
        }
        else {
            var emittedReferencedFiles = [];
            ts.forEach(host.getSourceFiles(), function (sourceFile) {
                if (!ts.isExternalModuleOrDeclarationFile(sourceFile)) {
                    if (!compilerOptions.noResolve) {
                        ts.forEach(sourceFile.referencedFiles, function (fileReference) {
                            var referencedFile = ts.tryResolveScriptReference(host, sourceFile, fileReference);
                            if (referencedFile && (ts.isExternalModuleOrDeclarationFile(referencedFile) &&
                                !ts.contains(emittedReferencedFiles, referencedFile))) {
                                writeReferencePath(referencedFile);
                                emittedReferencedFiles.push(referencedFile);
                            }
                        });
                    }
                    emitSourceFile(sourceFile);
                }
            });
        }
        return {
            reportedDeclarationError: reportedDeclarationError,
            moduleElementDeclarationEmitInfo: moduleElementDeclarationEmitInfo,
            synchronousDeclarationOutput: writer.getText(),
            referencePathsOutput: referencePathsOutput
        };
        function hasInternalAnnotation(range) {
            var text = currentSourceFile.text;
            var comment = text.substring(range.pos, range.end);
            return comment.indexOf("@internal") >= 0;
        }
        function stripInternal(node) {
            if (node) {
                var leadingCommentRanges = ts.getLeadingCommentRanges(currentSourceFile.text, node.pos);
                if (ts.forEach(leadingCommentRanges, hasInternalAnnotation)) {
                    return;
                }
                emitNode(node);
            }
        }
        function createAndSetNewTextWriterWithSymbolWriter() {
            var writer = ts.createTextWriter(newLine);
            writer.trackSymbol = trackSymbol;
            writer.writeKeyword = writer.write;
            writer.writeOperator = writer.write;
            writer.writePunctuation = writer.write;
            writer.writeSpace = writer.write;
            writer.writeStringLiteral = writer.writeLiteral;
            writer.writeParameter = writer.write;
            writer.writeSymbol = writer.write;
            setWriter(writer);
            return writer;
        }
        function setWriter(newWriter) {
            writer = newWriter;
            write = newWriter.write;
            writeTextOfNode = newWriter.writeTextOfNode;
            writeLine = newWriter.writeLine;
            increaseIndent = newWriter.increaseIndent;
            decreaseIndent = newWriter.decreaseIndent;
        }
        function writeAsynchronousModuleElements(nodes) {
            var oldWriter = writer;
            ts.forEach(nodes, function (declaration) {
                var nodeToCheck;
                if (declaration.kind === 199) {
                    nodeToCheck = declaration.parent.parent;
                }
                else if (declaration.kind === 213 || declaration.kind === 214 || declaration.kind === 211) {
                    ts.Debug.fail("We should be getting ImportDeclaration instead to write");
                }
                else {
                    nodeToCheck = declaration;
                }
                var moduleElementEmitInfo = ts.forEach(moduleElementDeclarationEmitInfo, function (declEmitInfo) { return declEmitInfo.node === nodeToCheck ? declEmitInfo : undefined; });
                if (!moduleElementEmitInfo && asynchronousSubModuleDeclarationEmitInfo) {
                    moduleElementEmitInfo = ts.forEach(asynchronousSubModuleDeclarationEmitInfo, function (declEmitInfo) { return declEmitInfo.node === nodeToCheck ? declEmitInfo : undefined; });
                }
                if (moduleElementEmitInfo) {
                    if (moduleElementEmitInfo.node.kind === 210) {
                        moduleElementEmitInfo.isVisible = true;
                    }
                    else {
                        createAndSetNewTextWriterWithSymbolWriter();
                        for (var declarationIndent = moduleElementEmitInfo.indent; declarationIndent; declarationIndent--) {
                            increaseIndent();
                        }
                        if (nodeToCheck.kind === 206) {
                            ts.Debug.assert(asynchronousSubModuleDeclarationEmitInfo === undefined);
                            asynchronousSubModuleDeclarationEmitInfo = [];
                        }
                        writeModuleElement(nodeToCheck);
                        if (nodeToCheck.kind === 206) {
                            moduleElementEmitInfo.subModuleElementDeclarationEmitInfo = asynchronousSubModuleDeclarationEmitInfo;
                            asynchronousSubModuleDeclarationEmitInfo = undefined;
                        }
                        moduleElementEmitInfo.asynchronousOutput = writer.getText();
                    }
                }
            });
            setWriter(oldWriter);
        }
        function handleSymbolAccessibilityError(symbolAccesibilityResult) {
            if (symbolAccesibilityResult.accessibility === 0) {
                if (symbolAccesibilityResult && symbolAccesibilityResult.aliasesToMakeVisible) {
                    writeAsynchronousModuleElements(symbolAccesibilityResult.aliasesToMakeVisible);
                }
            }
            else {
                reportedDeclarationError = true;
                var errorInfo = writer.getSymbolAccessibilityDiagnostic(symbolAccesibilityResult);
                if (errorInfo) {
                    if (errorInfo.typeName) {
                        diagnostics.push(ts.createDiagnosticForNode(symbolAccesibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, errorInfo.typeName), symbolAccesibilityResult.errorSymbolName, symbolAccesibilityResult.errorModuleName));
                    }
                    else {
                        diagnostics.push(ts.createDiagnosticForNode(symbolAccesibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, symbolAccesibilityResult.errorSymbolName, symbolAccesibilityResult.errorModuleName));
                    }
                }
            }
        }
        function trackSymbol(symbol, enclosingDeclaration, meaning) {
            handleSymbolAccessibilityError(resolver.isSymbolAccessible(symbol, enclosingDeclaration, meaning));
        }
        function writeTypeOfDeclaration(declaration, type, getSymbolAccessibilityDiagnostic) {
            writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
            write(": ");
            if (type) {
                emitType(type);
            }
            else {
                resolver.writeTypeOfDeclaration(declaration, enclosingDeclaration, 2, writer);
            }
        }
        function writeReturnTypeAtSignature(signature, getSymbolAccessibilityDiagnostic) {
            writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
            write(": ");
            if (signature.type) {
                emitType(signature.type);
            }
            else {
                resolver.writeReturnTypeOfSignatureDeclaration(signature, enclosingDeclaration, 2, writer);
            }
        }
        function emitLines(nodes) {
            for (var _i = 0; _i < nodes.length; _i++) {
                var node = nodes[_i];
                emit(node);
            }
        }
        function emitSeparatedList(nodes, separator, eachNodeEmitFn, canEmitFn) {
            var currentWriterPos = writer.getTextPos();
            for (var _i = 0; _i < nodes.length; _i++) {
                var node = nodes[_i];
                if (!canEmitFn || canEmitFn(node)) {
                    if (currentWriterPos !== writer.getTextPos()) {
                        write(separator);
                    }
                    currentWriterPos = writer.getTextPos();
                    eachNodeEmitFn(node);
                }
            }
        }
        function emitCommaList(nodes, eachNodeEmitFn, canEmitFn) {
            emitSeparatedList(nodes, ", ", eachNodeEmitFn, canEmitFn);
        }
        function writeJsDocComments(declaration) {
            if (declaration) {
                var jsDocComments = ts.getJsDocComments(declaration, currentSourceFile);
                ts.emitNewLineBeforeLeadingComments(currentSourceFile, writer, declaration, jsDocComments);
                ts.emitComments(currentSourceFile, writer, jsDocComments, true, newLine, ts.writeCommentRange);
            }
        }
        function emitTypeWithNewGetSymbolAccessibilityDiagnostic(type, getSymbolAccessibilityDiagnostic) {
            writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
            emitType(type);
        }
        function emitType(type) {
            switch (type.kind) {
                case 112:
                case 122:
                case 120:
                case 113:
                case 123:
                case 99:
                case 8:
                    return writeTextOfNode(currentSourceFile, type);
                case 177:
                    return emitExpressionWithTypeArguments(type);
                case 142:
                    return emitTypeReference(type);
                case 145:
                    return emitTypeQuery(type);
                case 147:
                    return emitArrayType(type);
                case 148:
                    return emitTupleType(type);
                case 149:
                    return emitUnionType(type);
                case 150:
                    return emitParenType(type);
                case 143:
                case 144:
                    return emitSignatureDeclarationWithJsDocComments(type);
                case 146:
                    return emitTypeLiteral(type);
                case 65:
                    return emitEntityName(type);
                case 127:
                    return emitEntityName(type);
            }
            function emitEntityName(entityName) {
                var visibilityResult = resolver.isEntityNameVisible(entityName, entityName.parent.kind === 209 ? entityName.parent : enclosingDeclaration);
                handleSymbolAccessibilityError(visibilityResult);
                writeEntityName(entityName);
                function writeEntityName(entityName) {
                    if (entityName.kind === 65) {
                        writeTextOfNode(currentSourceFile, entityName);
                    }
                    else {
                        var left = entityName.kind === 127 ? entityName.left : entityName.expression;
                        var right = entityName.kind === 127 ? entityName.right : entityName.name;
                        writeEntityName(left);
                        write(".");
                        writeTextOfNode(currentSourceFile, right);
                    }
                }
            }
            function emitExpressionWithTypeArguments(node) {
                if (ts.isSupportedExpressionWithTypeArguments(node)) {
                    ts.Debug.assert(node.expression.kind === 65 || node.expression.kind === 156);
                    emitEntityName(node.expression);
                    if (node.typeArguments) {
                        write("<");
                        emitCommaList(node.typeArguments, emitType);
                        write(">");
                    }
                }
            }
            function emitTypeReference(type) {
                emitEntityName(type.typeName);
                if (type.typeArguments) {
                    write("<");
                    emitCommaList(type.typeArguments, emitType);
                    write(">");
                }
            }
            function emitTypeQuery(type) {
                write("typeof ");
                emitEntityName(type.exprName);
            }
            function emitArrayType(type) {
                emitType(type.elementType);
                write("[]");
            }
            function emitTupleType(type) {
                write("[");
                emitCommaList(type.elementTypes, emitType);
                write("]");
            }
            function emitUnionType(type) {
                emitSeparatedList(type.types, " | ", emitType);
            }
            function emitParenType(type) {
                write("(");
                emitType(type.type);
                write(")");
            }
            function emitTypeLiteral(type) {
                write("{");
                if (type.members.length) {
                    writeLine();
                    increaseIndent();
                    emitLines(type.members);
                    decreaseIndent();
                }
                write("}");
            }
        }
        function emitSourceFile(node) {
            currentSourceFile = node;
            enclosingDeclaration = node;
            emitLines(node.statements);
        }
        function getExportDefaultTempVariableName() {
            var baseName = "_default";
            if (!ts.hasProperty(currentSourceFile.identifiers, baseName)) {
                return baseName;
            }
            var count = 0;
            while (true) {
                var name_14 = baseName + "_" + (++count);
                if (!ts.hasProperty(currentSourceFile.identifiers, name_14)) {
                    return name_14;
                }
            }
        }
        function emitExportAssignment(node) {
            if (node.expression.kind === 65) {
                write(node.isExportEquals ? "export = " : "export default ");
                writeTextOfNode(currentSourceFile, node.expression);
            }
            else {
                var tempVarName = getExportDefaultTempVariableName();
                write("declare var ");
                write(tempVarName);
                write(": ");
                writer.getSymbolAccessibilityDiagnostic = getDefaultExportAccessibilityDiagnostic;
                resolver.writeTypeOfExpression(node.expression, enclosingDeclaration, 2, writer);
                write(";");
                writeLine();
                write(node.isExportEquals ? "export = " : "export default ");
                write(tempVarName);
            }
            write(";");
            writeLine();
            if (node.expression.kind === 65) {
                var nodes = resolver.collectLinkedAliases(node.expression);
                writeAsynchronousModuleElements(nodes);
            }
            function getDefaultExportAccessibilityDiagnostic(diagnostic) {
                return {
                    diagnosticMessage: ts.Diagnostics.Default_export_of_the_module_has_or_is_using_private_name_0,
                    errorNode: node
                };
            }
        }
        function isModuleElementVisible(node) {
            return resolver.isDeclarationVisible(node);
        }
        function emitModuleElement(node, isModuleElementVisible) {
            if (isModuleElementVisible) {
                writeModuleElement(node);
            }
            else if (node.kind === 209 ||
                (node.parent.kind === 228 && ts.isExternalModule(currentSourceFile))) {
                var isVisible;
                if (asynchronousSubModuleDeclarationEmitInfo && node.parent.kind !== 228) {
                    asynchronousSubModuleDeclarationEmitInfo.push({
                        node: node,
                        outputPos: writer.getTextPos(),
                        indent: writer.getIndent(),
                        isVisible: isVisible
                    });
                }
                else {
                    if (node.kind === 210) {
                        var importDeclaration = node;
                        if (importDeclaration.importClause) {
                            isVisible = (importDeclaration.importClause.name && resolver.isDeclarationVisible(importDeclaration.importClause)) ||
                                isVisibleNamedBinding(importDeclaration.importClause.namedBindings);
                        }
                    }
                    moduleElementDeclarationEmitInfo.push({
                        node: node,
                        outputPos: writer.getTextPos(),
                        indent: writer.getIndent(),
                        isVisible: isVisible
                    });
                }
            }
        }
        function writeModuleElement(node) {
            switch (node.kind) {
                case 201:
                    return writeFunctionDeclaration(node);
                case 181:
                    return writeVariableStatement(node);
                case 203:
                    return writeInterfaceDeclaration(node);
                case 202:
                    return writeClassDeclaration(node);
                case 204:
                    return writeTypeAliasDeclaration(node);
                case 205:
                    return writeEnumDeclaration(node);
                case 206:
                    return writeModuleDeclaration(node);
                case 209:
                    return writeImportEqualsDeclaration(node);
                case 210:
                    return writeImportDeclaration(node);
                default:
                    ts.Debug.fail("Unknown symbol kind");
            }
        }
        function emitModuleElementDeclarationFlags(node) {
            if (node.parent === currentSourceFile) {
                if (node.flags & 1) {
                    write("export ");
                }
                if (node.flags & 256) {
                    write("default ");
                }
                else if (node.kind !== 203) {
                    write("declare ");
                }
            }
        }
        function emitClassMemberDeclarationFlags(node) {
            if (node.flags & 32) {
                write("private ");
            }
            else if (node.flags & 64) {
                write("protected ");
            }
            if (node.flags & 128) {
                write("static ");
            }
        }
        function writeImportEqualsDeclaration(node) {
            emitJsDocComments(node);
            if (node.flags & 1) {
                write("export ");
            }
            write("import ");
            writeTextOfNode(currentSourceFile, node.name);
            write(" = ");
            if (ts.isInternalModuleImportEqualsDeclaration(node)) {
                emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.moduleReference, getImportEntityNameVisibilityError);
                write(";");
            }
            else {
                write("require(");
                writeTextOfNode(currentSourceFile, ts.getExternalModuleImportEqualsDeclarationExpression(node));
                write(");");
            }
            writer.writeLine();
            function getImportEntityNameVisibilityError(symbolAccesibilityResult) {
                return {
                    diagnosticMessage: ts.Diagnostics.Import_declaration_0_is_using_private_name_1,
                    errorNode: node,
                    typeName: node.name
                };
            }
        }
        function isVisibleNamedBinding(namedBindings) {
            if (namedBindings) {
                if (namedBindings.kind === 212) {
                    return resolver.isDeclarationVisible(namedBindings);
                }
                else {
                    return ts.forEach(namedBindings.elements, function (namedImport) { return resolver.isDeclarationVisible(namedImport); });
                }
            }
        }
        function writeImportDeclaration(node) {
            if (!node.importClause && !(node.flags & 1)) {
                return;
            }
            emitJsDocComments(node);
            if (node.flags & 1) {
                write("export ");
            }
            write("import ");
            if (node.importClause) {
                var currentWriterPos = writer.getTextPos();
                if (node.importClause.name && resolver.isDeclarationVisible(node.importClause)) {
                    writeTextOfNode(currentSourceFile, node.importClause.name);
                }
                if (node.importClause.namedBindings && isVisibleNamedBinding(node.importClause.namedBindings)) {
                    if (currentWriterPos !== writer.getTextPos()) {
                        write(", ");
                    }
                    if (node.importClause.namedBindings.kind === 212) {
                        write("* as ");
                        writeTextOfNode(currentSourceFile, node.importClause.namedBindings.name);
                    }
                    else {
                        write("{ ");
                        emitCommaList(node.importClause.namedBindings.elements, emitImportOrExportSpecifier, resolver.isDeclarationVisible);
                        write(" }");
                    }
                }
                write(" from ");
            }
            writeTextOfNode(currentSourceFile, node.moduleSpecifier);
            write(";");
            writer.writeLine();
        }
        function emitImportOrExportSpecifier(node) {
            if (node.propertyName) {
                writeTextOfNode(currentSourceFile, node.propertyName);
                write(" as ");
            }
            writeTextOfNode(currentSourceFile, node.name);
        }
        function emitExportSpecifier(node) {
            emitImportOrExportSpecifier(node);
            var nodes = resolver.collectLinkedAliases(node.propertyName || node.name);
            writeAsynchronousModuleElements(nodes);
        }
        function emitExportDeclaration(node) {
            emitJsDocComments(node);
            write("export ");
            if (node.exportClause) {
                write("{ ");
                emitCommaList(node.exportClause.elements, emitExportSpecifier);
                write(" }");
            }
            else {
                write("*");
            }
            if (node.moduleSpecifier) {
                write(" from ");
                writeTextOfNode(currentSourceFile, node.moduleSpecifier);
            }
            write(";");
            writer.writeLine();
        }
        function writeModuleDeclaration(node) {
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            write("module ");
            writeTextOfNode(currentSourceFile, node.name);
            while (node.body.kind !== 207) {
                node = node.body;
                write(".");
                writeTextOfNode(currentSourceFile, node.name);
            }
            var prevEnclosingDeclaration = enclosingDeclaration;
            enclosingDeclaration = node;
            write(" {");
            writeLine();
            increaseIndent();
            emitLines(node.body.statements);
            decreaseIndent();
            write("}");
            writeLine();
            enclosingDeclaration = prevEnclosingDeclaration;
        }
        function writeTypeAliasDeclaration(node) {
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            write("type ");
            writeTextOfNode(currentSourceFile, node.name);
            write(" = ");
            emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.type, getTypeAliasDeclarationVisibilityError);
            write(";");
            writeLine();
            function getTypeAliasDeclarationVisibilityError(symbolAccesibilityResult) {
                return {
                    diagnosticMessage: ts.Diagnostics.Exported_type_alias_0_has_or_is_using_private_name_1,
                    errorNode: node.type,
                    typeName: node.name
                };
            }
        }
        function writeEnumDeclaration(node) {
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            if (ts.isConst(node)) {
                write("const ");
            }
            write("enum ");
            writeTextOfNode(currentSourceFile, node.name);
            write(" {");
            writeLine();
            increaseIndent();
            emitLines(node.members);
            decreaseIndent();
            write("}");
            writeLine();
        }
        function emitEnumMemberDeclaration(node) {
            emitJsDocComments(node);
            writeTextOfNode(currentSourceFile, node.name);
            var enumMemberValue = resolver.getConstantValue(node);
            if (enumMemberValue !== undefined) {
                write(" = ");
                write(enumMemberValue.toString());
            }
            write(",");
            writeLine();
        }
        function isPrivateMethodTypeParameter(node) {
            return node.parent.kind === 135 && (node.parent.flags & 32);
        }
        function emitTypeParameters(typeParameters) {
            function emitTypeParameter(node) {
                increaseIndent();
                emitJsDocComments(node);
                decreaseIndent();
                writeTextOfNode(currentSourceFile, node.name);
                if (node.constraint && !isPrivateMethodTypeParameter(node)) {
                    write(" extends ");
                    if (node.parent.kind === 143 ||
                        node.parent.kind === 144 ||
                        (node.parent.parent && node.parent.parent.kind === 146)) {
                        ts.Debug.assert(node.parent.kind === 135 ||
                            node.parent.kind === 134 ||
                            node.parent.kind === 143 ||
                            node.parent.kind === 144 ||
                            node.parent.kind === 139 ||
                            node.parent.kind === 140);
                        emitType(node.constraint);
                    }
                    else {
                        emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.constraint, getTypeParameterConstraintVisibilityError);
                    }
                }
                function getTypeParameterConstraintVisibilityError(symbolAccesibilityResult) {
                    var diagnosticMessage;
                    switch (node.parent.kind) {
                        case 202:
                            diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_class_has_or_is_using_private_name_1;
                            break;
                        case 203:
                            diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1;
                            break;
                        case 140:
                            diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1;
                            break;
                        case 139:
                            diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1;
                            break;
                        case 135:
                        case 134:
                            if (node.parent.flags & 128) {
                                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1;
                            }
                            else if (node.parent.parent.kind === 202) {
                                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1;
                            }
                            else {
                                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1;
                            }
                            break;
                        case 201:
                            diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_function_has_or_is_using_private_name_1;
                            break;
                        default:
                            ts.Debug.fail("This is unknown parent for type parameter: " + node.parent.kind);
                    }
                    return {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: node,
                        typeName: node.name
                    };
                }
            }
            if (typeParameters) {
                write("<");
                emitCommaList(typeParameters, emitTypeParameter);
                write(">");
            }
        }
        function emitHeritageClause(typeReferences, isImplementsList) {
            if (typeReferences) {
                write(isImplementsList ? " implements " : " extends ");
                emitCommaList(typeReferences, emitTypeOfTypeReference);
            }
            function emitTypeOfTypeReference(node) {
                if (ts.isSupportedExpressionWithTypeArguments(node)) {
                    emitTypeWithNewGetSymbolAccessibilityDiagnostic(node, getHeritageClauseVisibilityError);
                }
                function getHeritageClauseVisibilityError(symbolAccesibilityResult) {
                    var diagnosticMessage;
                    if (node.parent.parent.kind === 202) {
                        diagnosticMessage = isImplementsList ?
                            ts.Diagnostics.Implements_clause_of_exported_class_0_has_or_is_using_private_name_1 :
                            ts.Diagnostics.Extends_clause_of_exported_class_0_has_or_is_using_private_name_1;
                    }
                    else {
                        diagnosticMessage = ts.Diagnostics.Extends_clause_of_exported_interface_0_has_or_is_using_private_name_1;
                    }
                    return {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: node,
                        typeName: node.parent.parent.name
                    };
                }
            }
        }
        function writeClassDeclaration(node) {
            function emitParameterProperties(constructorDeclaration) {
                if (constructorDeclaration) {
                    ts.forEach(constructorDeclaration.parameters, function (param) {
                        if (param.flags & 112) {
                            emitPropertyDeclaration(param);
                        }
                    });
                }
            }
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            write("class ");
            writeTextOfNode(currentSourceFile, node.name);
            var prevEnclosingDeclaration = enclosingDeclaration;
            enclosingDeclaration = node;
            emitTypeParameters(node.typeParameters);
            var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
            if (baseTypeNode) {
                emitHeritageClause([baseTypeNode], false);
            }
            emitHeritageClause(ts.getClassImplementsHeritageClauseElements(node), true);
            write(" {");
            writeLine();
            increaseIndent();
            emitParameterProperties(ts.getFirstConstructorWithBody(node));
            emitLines(node.members);
            decreaseIndent();
            write("}");
            writeLine();
            enclosingDeclaration = prevEnclosingDeclaration;
        }
        function writeInterfaceDeclaration(node) {
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            write("interface ");
            writeTextOfNode(currentSourceFile, node.name);
            var prevEnclosingDeclaration = enclosingDeclaration;
            enclosingDeclaration = node;
            emitTypeParameters(node.typeParameters);
            emitHeritageClause(ts.getInterfaceBaseTypeNodes(node), false);
            write(" {");
            writeLine();
            increaseIndent();
            emitLines(node.members);
            decreaseIndent();
            write("}");
            writeLine();
            enclosingDeclaration = prevEnclosingDeclaration;
        }
        function emitPropertyDeclaration(node) {
            if (ts.hasDynamicName(node)) {
                return;
            }
            emitJsDocComments(node);
            emitClassMemberDeclarationFlags(node);
            emitVariableDeclaration(node);
            write(";");
            writeLine();
        }
        function emitVariableDeclaration(node) {
            if (node.kind !== 199 || resolver.isDeclarationVisible(node)) {
                if (ts.isBindingPattern(node.name)) {
                    emitBindingPattern(node.name);
                }
                else {
                    writeTextOfNode(currentSourceFile, node.name);
                    if ((node.kind === 133 || node.kind === 132) && ts.hasQuestionToken(node)) {
                        write("?");
                    }
                    if ((node.kind === 133 || node.kind === 132) && node.parent.kind === 146) {
                        emitTypeOfVariableDeclarationFromTypeLiteral(node);
                    }
                    else if (!(node.flags & 32)) {
                        writeTypeOfDeclaration(node, node.type, getVariableDeclarationTypeVisibilityError);
                    }
                }
            }
            function getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult) {
                if (node.kind === 199) {
                    return symbolAccesibilityResult.errorModuleName ?
                        symbolAccesibilityResult.accessibility === 2 ?
                            ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                            ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_private_module_2 :
                        ts.Diagnostics.Exported_variable_0_has_or_is_using_private_name_1;
                }
                else if (node.kind === 133 || node.kind === 132) {
                    if (node.flags & 128) {
                        return symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_private_name_1;
                    }
                    else if (node.parent.kind === 202) {
                        return symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_private_name_1;
                    }
                    else {
                        return symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_private_name_1;
                    }
                }
            }
            function getVariableDeclarationTypeVisibilityError(symbolAccesibilityResult) {
                var diagnosticMessage = getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
                return diagnosticMessage !== undefined ? {
                    diagnosticMessage: diagnosticMessage,
                    errorNode: node,
                    typeName: node.name
                } : undefined;
            }
            function emitBindingPattern(bindingPattern) {
                var elements = [];
                for (var _i = 0, _a = bindingPattern.elements; _i < _a.length; _i++) {
                    var element = _a[_i];
                    if (element.kind !== 176) {
                        elements.push(element);
                    }
                }
                emitCommaList(elements, emitBindingElement);
            }
            function emitBindingElement(bindingElement) {
                function getBindingElementTypeVisibilityError(symbolAccesibilityResult) {
                    var diagnosticMessage = getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
                    return diagnosticMessage !== undefined ? {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: bindingElement,
                        typeName: bindingElement.name
                    } : undefined;
                }
                if (bindingElement.name) {
                    if (ts.isBindingPattern(bindingElement.name)) {
                        emitBindingPattern(bindingElement.name);
                    }
                    else {
                        writeTextOfNode(currentSourceFile, bindingElement.name);
                        writeTypeOfDeclaration(bindingElement, undefined, getBindingElementTypeVisibilityError);
                    }
                }
            }
        }
        function emitTypeOfVariableDeclarationFromTypeLiteral(node) {
            if (node.type) {
                write(": ");
                emitType(node.type);
            }
        }
        function isVariableStatementVisible(node) {
            return ts.forEach(node.declarationList.declarations, function (varDeclaration) { return resolver.isDeclarationVisible(varDeclaration); });
        }
        function writeVariableStatement(node) {
            emitJsDocComments(node);
            emitModuleElementDeclarationFlags(node);
            if (ts.isLet(node.declarationList)) {
                write("let ");
            }
            else if (ts.isConst(node.declarationList)) {
                write("const ");
            }
            else {
                write("var ");
            }
            emitCommaList(node.declarationList.declarations, emitVariableDeclaration, resolver.isDeclarationVisible);
            write(";");
            writeLine();
        }
        function emitAccessorDeclaration(node) {
            if (ts.hasDynamicName(node)) {
                return;
            }
            var accessors = ts.getAllAccessorDeclarations(node.parent.members, node);
            var accessorWithTypeAnnotation;
            if (node === accessors.firstAccessor) {
                emitJsDocComments(accessors.getAccessor);
                emitJsDocComments(accessors.setAccessor);
                emitClassMemberDeclarationFlags(node);
                writeTextOfNode(currentSourceFile, node.name);
                if (!(node.flags & 32)) {
                    accessorWithTypeAnnotation = node;
                    var type = getTypeAnnotationFromAccessor(node);
                    if (!type) {
                        var anotherAccessor = node.kind === 137 ? accessors.setAccessor : accessors.getAccessor;
                        type = getTypeAnnotationFromAccessor(anotherAccessor);
                        if (type) {
                            accessorWithTypeAnnotation = anotherAccessor;
                        }
                    }
                    writeTypeOfDeclaration(node, type, getAccessorDeclarationTypeVisibilityError);
                }
                write(";");
                writeLine();
            }
            function getTypeAnnotationFromAccessor(accessor) {
                if (accessor) {
                    return accessor.kind === 137
                        ? accessor.type
                        : accessor.parameters.length > 0
                            ? accessor.parameters[0].type
                            : undefined;
                }
            }
            function getAccessorDeclarationTypeVisibilityError(symbolAccesibilityResult) {
                var diagnosticMessage;
                if (accessorWithTypeAnnotation.kind === 138) {
                    if (accessorWithTypeAnnotation.parent.flags & 128) {
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_private_name_1;
                    }
                    else {
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_private_name_1;
                    }
                    return {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: accessorWithTypeAnnotation.parameters[0],
                        typeName: accessorWithTypeAnnotation.name
                    };
                }
                else {
                    if (accessorWithTypeAnnotation.flags & 128) {
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named :
                                ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_private_name_0;
                    }
                    else {
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named :
                                ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_private_name_0;
                    }
                    return {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: accessorWithTypeAnnotation.name,
                        typeName: undefined
                    };
                }
            }
        }
        function writeFunctionDeclaration(node) {
            if (ts.hasDynamicName(node)) {
                return;
            }
            if (!resolver.isImplementationOfOverload(node)) {
                emitJsDocComments(node);
                if (node.kind === 201) {
                    emitModuleElementDeclarationFlags(node);
                }
                else if (node.kind === 135) {
                    emitClassMemberDeclarationFlags(node);
                }
                if (node.kind === 201) {
                    write("function ");
                    writeTextOfNode(currentSourceFile, node.name);
                }
                else if (node.kind === 136) {
                    write("constructor");
                }
                else {
                    writeTextOfNode(currentSourceFile, node.name);
                    if (ts.hasQuestionToken(node)) {
                        write("?");
                    }
                }
                emitSignatureDeclaration(node);
            }
        }
        function emitSignatureDeclarationWithJsDocComments(node) {
            emitJsDocComments(node);
            emitSignatureDeclaration(node);
        }
        function emitSignatureDeclaration(node) {
            if (node.kind === 140 || node.kind === 144) {
                write("new ");
            }
            emitTypeParameters(node.typeParameters);
            if (node.kind === 141) {
                write("[");
            }
            else {
                write("(");
            }
            var prevEnclosingDeclaration = enclosingDeclaration;
            enclosingDeclaration = node;
            emitCommaList(node.parameters, emitParameterDeclaration);
            if (node.kind === 141) {
                write("]");
            }
            else {
                write(")");
            }
            var isFunctionTypeOrConstructorType = node.kind === 143 || node.kind === 144;
            if (isFunctionTypeOrConstructorType || node.parent.kind === 146) {
                if (node.type) {
                    write(isFunctionTypeOrConstructorType ? " => " : ": ");
                    emitType(node.type);
                }
            }
            else if (node.kind !== 136 && !(node.flags & 32)) {
                writeReturnTypeAtSignature(node, getReturnTypeVisibilityError);
            }
            enclosingDeclaration = prevEnclosingDeclaration;
            if (!isFunctionTypeOrConstructorType) {
                write(";");
                writeLine();
            }
            function getReturnTypeVisibilityError(symbolAccesibilityResult) {
                var diagnosticMessage;
                switch (node.kind) {
                    case 140:
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0;
                        break;
                    case 139:
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0;
                        break;
                    case 141:
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0;
                        break;
                    case 135:
                    case 134:
                        if (node.flags & 128) {
                            diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                                symbolAccesibilityResult.accessibility === 2 ?
                                    ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named :
                                    ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 :
                                ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0;
                        }
                        else if (node.parent.kind === 202) {
                            diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                                symbolAccesibilityResult.accessibility === 2 ?
                                    ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named :
                                    ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 :
                                ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0;
                        }
                        else {
                            diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                                ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1 :
                                ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0;
                        }
                        break;
                    case 201:
                        diagnosticMessage = symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named :
                                ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1 :
                            ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_private_name_0;
                        break;
                    default:
                        ts.Debug.fail("This is unknown kind for signature: " + node.kind);
                }
                return {
                    diagnosticMessage: diagnosticMessage,
                    errorNode: node.name || node
                };
            }
        }
        function emitParameterDeclaration(node) {
            increaseIndent();
            emitJsDocComments(node);
            if (node.dotDotDotToken) {
                write("...");
            }
            if (ts.isBindingPattern(node.name)) {
                emitBindingPattern(node.name);
            }
            else {
                writeTextOfNode(currentSourceFile, node.name);
            }
            if (node.initializer || ts.hasQuestionToken(node)) {
                write("?");
            }
            decreaseIndent();
            if (node.parent.kind === 143 ||
                node.parent.kind === 144 ||
                node.parent.parent.kind === 146) {
                emitTypeOfVariableDeclarationFromTypeLiteral(node);
            }
            else if (!(node.parent.flags & 32)) {
                writeTypeOfDeclaration(node, node.type, getParameterDeclarationTypeVisibilityError);
            }
            function getParameterDeclarationTypeVisibilityError(symbolAccesibilityResult) {
                var diagnosticMessage = getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
                return diagnosticMessage !== undefined ? {
                    diagnosticMessage: diagnosticMessage,
                    errorNode: node,
                    typeName: node.name
                } : undefined;
            }
            function getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult) {
                switch (node.parent.kind) {
                    case 136:
                        return symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1;
                    case 140:
                        return symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1;
                    case 139:
                        return symbolAccesibilityResult.errorModuleName ?
                            ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1;
                    case 135:
                    case 134:
                        if (node.parent.flags & 128) {
                            return symbolAccesibilityResult.errorModuleName ?
                                symbolAccesibilityResult.accessibility === 2 ?
                                    ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                    ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 :
                                ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1;
                        }
                        else if (node.parent.parent.kind === 202) {
                            return symbolAccesibilityResult.errorModuleName ?
                                symbolAccesibilityResult.accessibility === 2 ?
                                    ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                    ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 :
                                ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1;
                        }
                        else {
                            return symbolAccesibilityResult.errorModuleName ?
                                ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2 :
                                ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1;
                        }
                    case 201:
                        return symbolAccesibilityResult.errorModuleName ?
                            symbolAccesibilityResult.accessibility === 2 ?
                                ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named :
                                ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2 :
                            ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_private_name_1;
                    default:
                        ts.Debug.fail("This is unknown parent for parameter: " + node.parent.kind);
                }
            }
            function emitBindingPattern(bindingPattern) {
                if (bindingPattern.kind === 151) {
                    write("{");
                    emitCommaList(bindingPattern.elements, emitBindingElement);
                    write("}");
                }
                else if (bindingPattern.kind === 152) {
                    write("[");
                    var elements = bindingPattern.elements;
                    emitCommaList(elements, emitBindingElement);
                    if (elements && elements.hasTrailingComma) {
                        write(", ");
                    }
                    write("]");
                }
            }
            function emitBindingElement(bindingElement) {
                function getBindingElementTypeVisibilityError(symbolAccesibilityResult) {
                    var diagnosticMessage = getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
                    return diagnosticMessage !== undefined ? {
                        diagnosticMessage: diagnosticMessage,
                        errorNode: bindingElement,
                        typeName: bindingElement.name
                    } : undefined;
                }
                if (bindingElement.kind === 176) {
                    write(" ");
                }
                else if (bindingElement.kind === 153) {
                    if (bindingElement.propertyName) {
                        writeTextOfNode(currentSourceFile, bindingElement.propertyName);
                        write(": ");
                        emitBindingPattern(bindingElement.name);
                    }
                    else if (bindingElement.name) {
                        if (ts.isBindingPattern(bindingElement.name)) {
                            emitBindingPattern(bindingElement.name);
                        }
                        else {
                            ts.Debug.assert(bindingElement.name.kind === 65);
                            if (bindingElement.dotDotDotToken) {
                                write("...");
                            }
                            writeTextOfNode(currentSourceFile, bindingElement.name);
                        }
                    }
                }
            }
        }
        function emitNode(node) {
            switch (node.kind) {
                case 201:
                case 206:
                case 209:
                case 203:
                case 202:
                case 204:
                case 205:
                    return emitModuleElement(node, isModuleElementVisible(node));
                case 181:
                    return emitModuleElement(node, isVariableStatementVisible(node));
                case 210:
                    return emitModuleElement(node, !node.importClause);
                case 216:
                    return emitExportDeclaration(node);
                case 136:
                case 135:
                case 134:
                    return writeFunctionDeclaration(node);
                case 140:
                case 139:
                case 141:
                    return emitSignatureDeclarationWithJsDocComments(node);
                case 137:
                case 138:
                    return emitAccessorDeclaration(node);
                case 133:
                case 132:
                    return emitPropertyDeclaration(node);
                case 227:
                    return emitEnumMemberDeclaration(node);
                case 215:
                    return emitExportAssignment(node);
                case 228:
                    return emitSourceFile(node);
            }
        }
        function writeReferencePath(referencedFile) {
            var declFileName = referencedFile.flags & 2048
                ? referencedFile.fileName
                : ts.shouldEmitToOwnFile(referencedFile, compilerOptions)
                    ? ts.getOwnEmitOutputFilePath(referencedFile, host, ".d.ts")
                    : ts.removeFileExtension(compilerOptions.out) + ".d.ts";
            declFileName = ts.getRelativePathToDirectoryOrUrl(ts.getDirectoryPath(ts.normalizeSlashes(jsFilePath)), declFileName, host.getCurrentDirectory(), host.getCanonicalFileName, false);
            referencePathsOutput += "/// <reference path=\"" + declFileName + "\" />" + newLine;
        }
    }
    function writeDeclarationFile(jsFilePath, sourceFile, host, resolver, diagnostics) {
        var emitDeclarationResult = emitDeclarations(host, resolver, diagnostics, jsFilePath, sourceFile);
        if (!emitDeclarationResult.reportedDeclarationError) {
            var declarationOutput = emitDeclarationResult.referencePathsOutput
                + getDeclarationOutput(emitDeclarationResult.synchronousDeclarationOutput, emitDeclarationResult.moduleElementDeclarationEmitInfo);
            ts.writeFile(host, diagnostics, ts.removeFileExtension(jsFilePath) + ".d.ts", declarationOutput, host.getCompilerOptions().emitBOM);
        }
        function getDeclarationOutput(synchronousDeclarationOutput, moduleElementDeclarationEmitInfo) {
            var appliedSyncOutputPos = 0;
            var declarationOutput = "";
            ts.forEach(moduleElementDeclarationEmitInfo, function (aliasEmitInfo) {
                if (aliasEmitInfo.asynchronousOutput) {
                    declarationOutput += synchronousDeclarationOutput.substring(appliedSyncOutputPos, aliasEmitInfo.outputPos);
                    declarationOutput += getDeclarationOutput(aliasEmitInfo.asynchronousOutput, aliasEmitInfo.subModuleElementDeclarationEmitInfo);
                    appliedSyncOutputPos = aliasEmitInfo.outputPos;
                }
            });
            declarationOutput += synchronousDeclarationOutput.substring(appliedSyncOutputPos);
            return declarationOutput;
        }
    }
    ts.writeDeclarationFile = writeDeclarationFile;
})(ts || (ts = {}));
/// <reference path="checker.ts"/>
/// <reference path="declarationEmitter.ts"/>
var ts;
(function (ts) {
    function isExternalModuleOrDeclarationFile(sourceFile) {
        return ts.isExternalModule(sourceFile) || ts.isDeclarationFile(sourceFile);
    }
    ts.isExternalModuleOrDeclarationFile = isExternalModuleOrDeclarationFile;
    function emitFiles(resolver, host, targetSourceFile) {
        var extendsHelper = "\nvar __extends = (this && this.__extends) || function (d, b) {\n    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];\n    function __() { this.constructor = d; }\n    __.prototype = b.prototype;\n    d.prototype = new __();\n};";
        var decorateHelper = "\nvar __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") return Reflect.decorate(decorators, target, key, desc);\n    switch (arguments.length) {\n        case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);\n        case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);\n        case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);\n    }\n};";
        var metadataHelper = "\nvar __metadata = (this && this.__metadata) || function (k, v) {\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(k, v);\n};";
        var paramHelper = "\nvar __param = (this && this.__param) || function (paramIndex, decorator) {\n    return function (target, key) { decorator(target, key, paramIndex); }\n};";
        var compilerOptions = host.getCompilerOptions();
        var languageVersion = compilerOptions.target || 0;
        var sourceMapDataList = compilerOptions.sourceMap || compilerOptions.inlineSourceMap ? [] : undefined;
        var diagnostics = [];
        var newLine = host.getNewLine();
        if (targetSourceFile === undefined) {
            ts.forEach(host.getSourceFiles(), function (sourceFile) {
                if (ts.shouldEmitToOwnFile(sourceFile, compilerOptions)) {
                    var jsFilePath = ts.getOwnEmitOutputFilePath(sourceFile, host, ".js");
                    emitFile(jsFilePath, sourceFile);
                }
            });
            if (compilerOptions.out) {
                emitFile(compilerOptions.out);
            }
        }
        else {
            if (ts.shouldEmitToOwnFile(targetSourceFile, compilerOptions)) {
                var jsFilePath = ts.getOwnEmitOutputFilePath(targetSourceFile, host, ".js");
                emitFile(jsFilePath, targetSourceFile);
            }
            else if (!ts.isDeclarationFile(targetSourceFile) && compilerOptions.out) {
                emitFile(compilerOptions.out);
            }
        }
        diagnostics = ts.sortAndDeduplicateDiagnostics(diagnostics);
        return {
            emitSkipped: false,
            diagnostics: diagnostics,
            sourceMaps: sourceMapDataList
        };
        function isNodeDescendentOf(node, ancestor) {
            while (node) {
                if (node === ancestor)
                    return true;
                node = node.parent;
            }
            return false;
        }
        function isUniqueLocalName(name, container) {
            for (var node = container; isNodeDescendentOf(node, container); node = node.nextContainer) {
                if (node.locals && ts.hasProperty(node.locals, name)) {
                    if (node.locals[name].flags & (107455 | 1048576 | 8388608)) {
                        return false;
                    }
                }
            }
            return true;
        }
        function emitJavaScript(jsFilePath, root) {
            var writer = ts.createTextWriter(newLine);
            var write = writer.write;
            var writeTextOfNode = writer.writeTextOfNode;
            var writeLine = writer.writeLine;
            var increaseIndent = writer.increaseIndent;
            var decreaseIndent = writer.decreaseIndent;
            var currentSourceFile;
            var exportFunctionForFile;
            var generatedNameSet = {};
            var nodeToGeneratedName = [];
            var blockScopedVariableToGeneratedName;
            var computedPropertyNamesToGeneratedNames;
            var extendsEmitted = false;
            var decorateEmitted = false;
            var paramEmitted = false;
            var tempFlags = 0;
            var tempVariables;
            var tempParameters;
            var externalImports;
            var exportSpecifiers;
            var exportEquals;
            var hasExportStars;
            var writeEmittedFiles = writeJavaScriptFile;
            var detachedCommentsInfo;
            var writeComment = ts.writeCommentRange;
            var emit = emitNodeWithoutSourceMap;
            var emitStart = function (node) { };
            var emitEnd = function (node) { };
            var emitToken = emitTokenText;
            var scopeEmitStart = function (scopeDeclaration, scopeName) { };
            var scopeEmitEnd = function () { };
            var sourceMapData;
            if (compilerOptions.sourceMap || compilerOptions.inlineSourceMap) {
                initializeEmitterWithSourceMaps();
            }
            if (root) {
                emitSourceFile(root);
            }
            else {
                ts.forEach(host.getSourceFiles(), function (sourceFile) {
                    if (!isExternalModuleOrDeclarationFile(sourceFile)) {
                        emitSourceFile(sourceFile);
                    }
                });
            }
            writeLine();
            writeEmittedFiles(writer.getText(), compilerOptions.emitBOM);
            return;
            function emitSourceFile(sourceFile) {
                currentSourceFile = sourceFile;
                exportFunctionForFile = undefined;
                emit(sourceFile);
            }
            function isUniqueName(name) {
                return !resolver.hasGlobalName(name) &&
                    !ts.hasProperty(currentSourceFile.identifiers, name) &&
                    !ts.hasProperty(generatedNameSet, name);
            }
            function makeTempVariableName(flags) {
                if (flags && !(tempFlags & flags)) {
                    var name = flags === 268435456 ? "_i" : "_n";
                    if (isUniqueName(name)) {
                        tempFlags |= flags;
                        return name;
                    }
                }
                while (true) {
                    var count = tempFlags & 268435455;
                    tempFlags++;
                    if (count !== 8 && count !== 13) {
                        var name_15 = count < 26 ? "_" + String.fromCharCode(97 + count) : "_" + (count - 26);
                        if (isUniqueName(name_15)) {
                            return name_15;
                        }
                    }
                }
            }
            function makeUniqueName(baseName) {
                if (baseName.charCodeAt(baseName.length - 1) !== 95) {
                    baseName += "_";
                }
                var i = 1;
                while (true) {
                    var generatedName = baseName + i;
                    if (isUniqueName(generatedName)) {
                        return generatedNameSet[generatedName] = generatedName;
                    }
                    i++;
                }
            }
            function assignGeneratedName(node, name) {
                nodeToGeneratedName[ts.getNodeId(node)] = ts.unescapeIdentifier(name);
            }
            function generateNameForFunctionOrClassDeclaration(node) {
                if (!node.name) {
                    assignGeneratedName(node, makeUniqueName("default"));
                }
            }
            function generateNameForModuleOrEnum(node) {
                if (node.name.kind === 65) {
                    var name_16 = node.name.text;
                    assignGeneratedName(node, isUniqueLocalName(name_16, node) ? name_16 : makeUniqueName(name_16));
                }
            }
            function generateNameForImportOrExportDeclaration(node) {
                var expr = ts.getExternalModuleName(node);
                var baseName = expr.kind === 8 ?
                    ts.escapeIdentifier(ts.makeIdentifierFromModuleName(expr.text)) : "module";
                assignGeneratedName(node, makeUniqueName(baseName));
            }
            function generateNameForImportDeclaration(node) {
                if (node.importClause) {
                    generateNameForImportOrExportDeclaration(node);
                }
            }
            function generateNameForExportDeclaration(node) {
                if (node.moduleSpecifier) {
                    generateNameForImportOrExportDeclaration(node);
                }
            }
            function generateNameForExportAssignment(node) {
                if (node.expression && node.expression.kind !== 65) {
                    assignGeneratedName(node, makeUniqueName("default"));
                }
            }
            function generateNameForNode(node) {
                switch (node.kind) {
                    case 201:
                    case 202:
                    case 175:
                        generateNameForFunctionOrClassDeclaration(node);
                        break;
                    case 206:
                        generateNameForModuleOrEnum(node);
                        generateNameForNode(node.body);
                        break;
                    case 205:
                        generateNameForModuleOrEnum(node);
                        break;
                    case 210:
                        generateNameForImportDeclaration(node);
                        break;
                    case 216:
                        generateNameForExportDeclaration(node);
                        break;
                    case 215:
                        generateNameForExportAssignment(node);
                        break;
                }
            }
            function getGeneratedNameForNode(node) {
                var nodeId = ts.getNodeId(node);
                if (!nodeToGeneratedName[nodeId]) {
                    generateNameForNode(node);
                }
                return nodeToGeneratedName[nodeId];
            }
            function initializeEmitterWithSourceMaps() {
                var sourceMapDir;
                var sourceMapSourceIndex = -1;
                var sourceMapNameIndexMap = {};
                var sourceMapNameIndices = [];
                function getSourceMapNameIndex() {
                    return sourceMapNameIndices.length ? ts.lastOrUndefined(sourceMapNameIndices) : -1;
                }
                var lastRecordedSourceMapSpan;
                var lastEncodedSourceMapSpan = {
                    emittedLine: 1,
                    emittedColumn: 1,
                    sourceLine: 1,
                    sourceColumn: 1,
                    sourceIndex: 0
                };
                var lastEncodedNameIndex = 0;
                function encodeLastRecordedSourceMapSpan() {
                    if (!lastRecordedSourceMapSpan || lastRecordedSourceMapSpan === lastEncodedSourceMapSpan) {
                        return;
                    }
                    var prevEncodedEmittedColumn = lastEncodedSourceMapSpan.emittedColumn;
                    if (lastEncodedSourceMapSpan.emittedLine == lastRecordedSourceMapSpan.emittedLine) {
                        if (sourceMapData.sourceMapMappings) {
                            sourceMapData.sourceMapMappings += ",";
                        }
                    }
                    else {
                        for (var encodedLine = lastEncodedSourceMapSpan.emittedLine; encodedLine < lastRecordedSourceMapSpan.emittedLine; encodedLine++) {
                            sourceMapData.sourceMapMappings += ";";
                        }
                        prevEncodedEmittedColumn = 1;
                    }
                    sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.emittedColumn - prevEncodedEmittedColumn);
                    sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceIndex - lastEncodedSourceMapSpan.sourceIndex);
                    sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceLine - lastEncodedSourceMapSpan.sourceLine);
                    sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceColumn - lastEncodedSourceMapSpan.sourceColumn);
                    if (lastRecordedSourceMapSpan.nameIndex >= 0) {
                        sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.nameIndex - lastEncodedNameIndex);
                        lastEncodedNameIndex = lastRecordedSourceMapSpan.nameIndex;
                    }
                    lastEncodedSourceMapSpan = lastRecordedSourceMapSpan;
                    sourceMapData.sourceMapDecodedMappings.push(lastEncodedSourceMapSpan);
                    function base64VLQFormatEncode(inValue) {
                        function base64FormatEncode(inValue) {
                            if (inValue < 64) {
                                return 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.charAt(inValue);
                            }
                            throw TypeError(inValue + ": not a 64 based value");
                        }
                        if (inValue < 0) {
                            inValue = ((-inValue) << 1) + 1;
                        }
                        else {
                            inValue = inValue << 1;
                        }
                        var encodedStr = "";
                        do {
                            var currentDigit = inValue & 31;
                            inValue = inValue >> 5;
                            if (inValue > 0) {
                                currentDigit = currentDigit | 32;
                            }
                            encodedStr = encodedStr + base64FormatEncode(currentDigit);
                        } while (inValue > 0);
                        return encodedStr;
                    }
                }
                function recordSourceMapSpan(pos) {
                    var sourceLinePos = ts.getLineAndCharacterOfPosition(currentSourceFile, pos);
                    sourceLinePos.line++;
                    sourceLinePos.character++;
                    var emittedLine = writer.getLine();
                    var emittedColumn = writer.getColumn();
                    if (!lastRecordedSourceMapSpan ||
                        lastRecordedSourceMapSpan.emittedLine != emittedLine ||
                        lastRecordedSourceMapSpan.emittedColumn != emittedColumn ||
                        (lastRecordedSourceMapSpan.sourceIndex === sourceMapSourceIndex &&
                            (lastRecordedSourceMapSpan.sourceLine > sourceLinePos.line ||
                                (lastRecordedSourceMapSpan.sourceLine === sourceLinePos.line && lastRecordedSourceMapSpan.sourceColumn > sourceLinePos.character)))) {
                        encodeLastRecordedSourceMapSpan();
                        lastRecordedSourceMapSpan = {
                            emittedLine: emittedLine,
                            emittedColumn: emittedColumn,
                            sourceLine: sourceLinePos.line,
                            sourceColumn: sourceLinePos.character,
                            nameIndex: getSourceMapNameIndex(),
                            sourceIndex: sourceMapSourceIndex
                        };
                    }
                    else {
                        lastRecordedSourceMapSpan.sourceLine = sourceLinePos.line;
                        lastRecordedSourceMapSpan.sourceColumn = sourceLinePos.character;
                        lastRecordedSourceMapSpan.sourceIndex = sourceMapSourceIndex;
                    }
                }
                function recordEmitNodeStartSpan(node) {
                    recordSourceMapSpan(ts.skipTrivia(currentSourceFile.text, node.pos));
                }
                function recordEmitNodeEndSpan(node) {
                    recordSourceMapSpan(node.end);
                }
                function writeTextWithSpanRecord(tokenKind, startPos, emitFn) {
                    var tokenStartPos = ts.skipTrivia(currentSourceFile.text, startPos);
                    recordSourceMapSpan(tokenStartPos);
                    var tokenEndPos = emitTokenText(tokenKind, tokenStartPos, emitFn);
                    recordSourceMapSpan(tokenEndPos);
                    return tokenEndPos;
                }
                function recordNewSourceFileStart(node) {
                    var sourcesDirectoryPath = compilerOptions.sourceRoot ? host.getCommonSourceDirectory() : sourceMapDir;
                    sourceMapData.sourceMapSources.push(ts.getRelativePathToDirectoryOrUrl(sourcesDirectoryPath, node.fileName, host.getCurrentDirectory(), host.getCanonicalFileName, true));
                    sourceMapSourceIndex = sourceMapData.sourceMapSources.length - 1;
                    sourceMapData.inputSourceFileNames.push(node.fileName);
                    if (compilerOptions.inlineSources) {
                        if (!sourceMapData.sourceMapSourcesContent) {
                            sourceMapData.sourceMapSourcesContent = [];
                        }
                        sourceMapData.sourceMapSourcesContent.push(node.text);
                    }
                }
                function recordScopeNameOfNode(node, scopeName) {
                    function recordScopeNameIndex(scopeNameIndex) {
                        sourceMapNameIndices.push(scopeNameIndex);
                    }
                    function recordScopeNameStart(scopeName) {
                        var scopeNameIndex = -1;
                        if (scopeName) {
                            var parentIndex = getSourceMapNameIndex();
                            if (parentIndex !== -1) {
                                var name_17 = node.name;
                                if (!name_17 || name_17.kind !== 128) {
                                    scopeName = "." + scopeName;
                                }
                                scopeName = sourceMapData.sourceMapNames[parentIndex] + scopeName;
                            }
                            scopeNameIndex = ts.getProperty(sourceMapNameIndexMap, scopeName);
                            if (scopeNameIndex === undefined) {
                                scopeNameIndex = sourceMapData.sourceMapNames.length;
                                sourceMapData.sourceMapNames.push(scopeName);
                                sourceMapNameIndexMap[scopeName] = scopeNameIndex;
                            }
                        }
                        recordScopeNameIndex(scopeNameIndex);
                    }
                    if (scopeName) {
                        recordScopeNameStart(scopeName);
                    }
                    else if (node.kind === 201 ||
                        node.kind === 163 ||
                        node.kind === 135 ||
                        node.kind === 134 ||
                        node.kind === 137 ||
                        node.kind === 138 ||
                        node.kind === 206 ||
                        node.kind === 202 ||
                        node.kind === 205) {
                        if (node.name) {
                            var name_18 = node.name;
                            scopeName = name_18.kind === 128
                                ? ts.getTextOfNode(name_18)
                                : node.name.text;
                        }
                        recordScopeNameStart(scopeName);
                    }
                    else {
                        recordScopeNameIndex(getSourceMapNameIndex());
                    }
                }
                function recordScopeNameEnd() {
                    sourceMapNameIndices.pop();
                }
                ;
                function writeCommentRangeWithMap(curentSourceFile, writer, comment, newLine) {
                    recordSourceMapSpan(comment.pos);
                    ts.writeCommentRange(currentSourceFile, writer, comment, newLine);
                    recordSourceMapSpan(comment.end);
                }
                function serializeSourceMapContents(version, file, sourceRoot, sources, names, mappings, sourcesContent) {
                    if (typeof JSON !== "undefined") {
                        var map_1 = {
                            version: version,
                            file: file,
                            sourceRoot: sourceRoot,
                            sources: sources,
                            names: names,
                            mappings: mappings
                        };
                        if (sourcesContent !== undefined) {
                            map_1.sourcesContent = sourcesContent;
                        }
                        return JSON.stringify(map_1);
                    }
                    return "{\"version\":" + version + ",\"file\":\"" + ts.escapeString(file) + "\",\"sourceRoot\":\"" + ts.escapeString(sourceRoot) + "\",\"sources\":[" + serializeStringArray(sources) + "],\"names\":[" + serializeStringArray(names) + "],\"mappings\":\"" + ts.escapeString(mappings) + "\" " + (sourcesContent !== undefined ? ",\"sourcesContent\":[" + serializeStringArray(sourcesContent) + "]" : "") + "}";
                    function serializeStringArray(list) {
                        var output = "";
                        for (var i = 0, n = list.length; i < n; i++) {
                            if (i) {
                                output += ",";
                            }
                            output += "\"" + ts.escapeString(list[i]) + "\"";
                        }
                        return output;
                    }
                }
                function writeJavaScriptAndSourceMapFile(emitOutput, writeByteOrderMark) {
                    encodeLastRecordedSourceMapSpan();
                    var sourceMapText = serializeSourceMapContents(3, sourceMapData.sourceMapFile, sourceMapData.sourceMapSourceRoot, sourceMapData.sourceMapSources, sourceMapData.sourceMapNames, sourceMapData.sourceMapMappings, sourceMapData.sourceMapSourcesContent);
                    sourceMapDataList.push(sourceMapData);
                    var sourceMapUrl;
                    if (compilerOptions.inlineSourceMap) {
                        var base64SourceMapText = ts.convertToBase64(sourceMapText);
                        sourceMapUrl = "//# sourceMappingURL=data:application/json;base64," + base64SourceMapText;
                    }
                    else {
                        ts.writeFile(host, diagnostics, sourceMapData.sourceMapFilePath, sourceMapText, false);
                        sourceMapUrl = "//# sourceMappingURL=" + sourceMapData.jsSourceMappingURL;
                    }
                    writeJavaScriptFile(emitOutput + sourceMapUrl, writeByteOrderMark);
                }
                var sourceMapJsFile = ts.getBaseFileName(ts.normalizeSlashes(jsFilePath));
                sourceMapData = {
                    sourceMapFilePath: jsFilePath + ".map",
                    jsSourceMappingURL: sourceMapJsFile + ".map",
                    sourceMapFile: sourceMapJsFile,
                    sourceMapSourceRoot: compilerOptions.sourceRoot || "",
                    sourceMapSources: [],
                    inputSourceFileNames: [],
                    sourceMapNames: [],
                    sourceMapMappings: "",
                    sourceMapSourcesContent: undefined,
                    sourceMapDecodedMappings: []
                };
                sourceMapData.sourceMapSourceRoot = ts.normalizeSlashes(sourceMapData.sourceMapSourceRoot);
                if (sourceMapData.sourceMapSourceRoot.length && sourceMapData.sourceMapSourceRoot.charCodeAt(sourceMapData.sourceMapSourceRoot.length - 1) !== 47) {
                    sourceMapData.sourceMapSourceRoot += ts.directorySeparator;
                }
                if (compilerOptions.mapRoot) {
                    sourceMapDir = ts.normalizeSlashes(compilerOptions.mapRoot);
                    if (root) {
                        sourceMapDir = ts.getDirectoryPath(ts.getSourceFilePathInNewDir(root, host, sourceMapDir));
                    }
                    if (!ts.isRootedDiskPath(sourceMapDir) && !ts.isUrl(sourceMapDir)) {
                        sourceMapDir = ts.combinePaths(host.getCommonSourceDirectory(), sourceMapDir);
                        sourceMapData.jsSourceMappingURL = ts.getRelativePathToDirectoryOrUrl(ts.getDirectoryPath(ts.normalizePath(jsFilePath)), ts.combinePaths(sourceMapDir, sourceMapData.jsSourceMappingURL), host.getCurrentDirectory(), host.getCanonicalFileName, true);
                    }
                    else {
                        sourceMapData.jsSourceMappingURL = ts.combinePaths(sourceMapDir, sourceMapData.jsSourceMappingURL);
                    }
                }
                else {
                    sourceMapDir = ts.getDirectoryPath(ts.normalizePath(jsFilePath));
                }
                function emitNodeWithSourceMap(node, allowGeneratedIdentifiers) {
                    if (node) {
                        if (ts.nodeIsSynthesized(node)) {
                            return emitNodeWithoutSourceMap(node, false);
                        }
                        if (node.kind != 228) {
                            recordEmitNodeStartSpan(node);
                            emitNodeWithoutSourceMap(node, allowGeneratedIdentifiers);
                            recordEmitNodeEndSpan(node);
                        }
                        else {
                            recordNewSourceFileStart(node);
                            emitNodeWithoutSourceMap(node, false);
                        }
                    }
                }
                writeEmittedFiles = writeJavaScriptAndSourceMapFile;
                emit = emitNodeWithSourceMap;
                emitStart = recordEmitNodeStartSpan;
                emitEnd = recordEmitNodeEndSpan;
                emitToken = writeTextWithSpanRecord;
                scopeEmitStart = recordScopeNameOfNode;
                scopeEmitEnd = recordScopeNameEnd;
                writeComment = writeCommentRangeWithMap;
            }
            function writeJavaScriptFile(emitOutput, writeByteOrderMark) {
                ts.writeFile(host, diagnostics, jsFilePath, emitOutput, writeByteOrderMark);
            }
            function createTempVariable(flags) {
                var result = ts.createSynthesizedNode(65);
                result.text = makeTempVariableName(flags);
                return result;
            }
            function recordTempDeclaration(name) {
                if (!tempVariables) {
                    tempVariables = [];
                }
                tempVariables.push(name);
            }
            function createAndRecordTempVariable(flags) {
                var temp = createTempVariable(flags);
                recordTempDeclaration(temp);
                return temp;
            }
            function emitTempDeclarations(newLine) {
                if (tempVariables) {
                    if (newLine) {
                        writeLine();
                    }
                    else {
                        write(" ");
                    }
                    write("var ");
                    emitCommaList(tempVariables);
                    write(";");
                }
            }
            function emitTokenText(tokenKind, startPos, emitFn) {
                var tokenString = ts.tokenToString(tokenKind);
                if (emitFn) {
                    emitFn();
                }
                else {
                    write(tokenString);
                }
                return startPos + tokenString.length;
            }
            function emitOptional(prefix, node) {
                if (node) {
                    write(prefix);
                    emit(node);
                }
            }
            function emitParenthesizedIf(node, parenthesized) {
                if (parenthesized) {
                    write("(");
                }
                emit(node);
                if (parenthesized) {
                    write(")");
                }
            }
            function emitTrailingCommaIfPresent(nodeList) {
                if (nodeList.hasTrailingComma) {
                    write(",");
                }
            }
            function emitLinePreservingList(parent, nodes, allowTrailingComma, spacesBetweenBraces) {
                ts.Debug.assert(nodes.length > 0);
                increaseIndent();
                if (nodeStartPositionsAreOnSameLine(parent, nodes[0])) {
                    if (spacesBetweenBraces) {
                        write(" ");
                    }
                }
                else {
                    writeLine();
                }
                for (var i = 0, n = nodes.length; i < n; i++) {
                    if (i) {
                        if (nodeEndIsOnSameLineAsNodeStart(nodes[i - 1], nodes[i])) {
                            write(", ");
                        }
                        else {
                            write(",");
                            writeLine();
                        }
                    }
                    emit(nodes[i]);
                }
                if (nodes.hasTrailingComma && allowTrailingComma) {
                    write(",");
                }
                decreaseIndent();
                if (nodeEndPositionsAreOnSameLine(parent, ts.lastOrUndefined(nodes))) {
                    if (spacesBetweenBraces) {
                        write(" ");
                    }
                }
                else {
                    writeLine();
                }
            }
            function emitList(nodes, start, count, multiLine, trailingComma, leadingComma, noTrailingNewLine, emitNode) {
                if (!emitNode) {
                    emitNode = emit;
                }
                for (var i = 0; i < count; i++) {
                    if (multiLine) {
                        if (i || leadingComma) {
                            write(",");
                        }
                        writeLine();
                    }
                    else {
                        if (i || leadingComma) {
                            write(", ");
                        }
                    }
                    emitNode(nodes[start + i]);
                    leadingComma = true;
                }
                if (trailingComma) {
                    write(",");
                }
                if (multiLine && !noTrailingNewLine) {
                    writeLine();
                }
                return count;
            }
            function emitCommaList(nodes) {
                if (nodes) {
                    emitList(nodes, 0, nodes.length, false, false);
                }
            }
            function emitLines(nodes) {
                emitLinesStartingAt(nodes, 0);
            }
            function emitLinesStartingAt(nodes, startIndex) {
                for (var i = startIndex; i < nodes.length; i++) {
                    writeLine();
                    emit(nodes[i]);
                }
            }
            function isBinaryOrOctalIntegerLiteral(node, text) {
                if (node.kind === 7 && text.length > 1) {
                    switch (text.charCodeAt(1)) {
                        case 98:
                        case 66:
                        case 111:
                        case 79:
                            return true;
                    }
                }
                return false;
            }
            function emitLiteral(node) {
                var text = getLiteralText(node);
                if ((compilerOptions.sourceMap || compilerOptions.inlineSourceMap) && (node.kind === 8 || ts.isTemplateLiteralKind(node.kind))) {
                    writer.writeLiteral(text);
                }
                else if (languageVersion < 2 && isBinaryOrOctalIntegerLiteral(node, text)) {
                    write(node.text);
                }
                else {
                    write(text);
                }
            }
            function getLiteralText(node) {
                if (languageVersion < 2 && (ts.isTemplateLiteralKind(node.kind) || node.hasExtendedUnicodeEscape)) {
                    return getQuotedEscapedLiteralText('"', node.text, '"');
                }
                if (node.parent) {
                    return ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, node);
                }
                switch (node.kind) {
                    case 8:
                        return getQuotedEscapedLiteralText('"', node.text, '"');
                    case 10:
                        return getQuotedEscapedLiteralText('`', node.text, '`');
                    case 11:
                        return getQuotedEscapedLiteralText('`', node.text, '${');
                    case 12:
                        return getQuotedEscapedLiteralText('}', node.text, '${');
                    case 13:
                        return getQuotedEscapedLiteralText('}', node.text, '`');
                    case 7:
                        return node.text;
                }
                ts.Debug.fail("Literal kind '" + node.kind + "' not accounted for.");
            }
            function getQuotedEscapedLiteralText(leftQuote, text, rightQuote) {
                return leftQuote + ts.escapeNonAsciiCharacters(ts.escapeString(text)) + rightQuote;
            }
            function emitDownlevelRawTemplateLiteral(node) {
                var text = ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, node);
                var isLast = node.kind === 10 || node.kind === 13;
                text = text.substring(1, text.length - (isLast ? 1 : 2));
                text = text.replace(/\r\n?/g, "\n");
                text = ts.escapeString(text);
                write('"' + text + '"');
            }
            function emitDownlevelTaggedTemplateArray(node, literalEmitter) {
                write("[");
                if (node.template.kind === 10) {
                    literalEmitter(node.template);
                }
                else {
                    literalEmitter(node.template.head);
                    ts.forEach(node.template.templateSpans, function (child) {
                        write(", ");
                        literalEmitter(child.literal);
                    });
                }
                write("]");
            }
            function emitDownlevelTaggedTemplate(node) {
                var tempVariable = createAndRecordTempVariable(0);
                write("(");
                emit(tempVariable);
                write(" = ");
                emitDownlevelTaggedTemplateArray(node, emit);
                write(", ");
                emit(tempVariable);
                write(".raw = ");
                emitDownlevelTaggedTemplateArray(node, emitDownlevelRawTemplateLiteral);
                write(", ");
                emitParenthesizedIf(node.tag, needsParenthesisForPropertyAccessOrInvocation(node.tag));
                write("(");
                emit(tempVariable);
                if (node.template.kind === 172) {
                    ts.forEach(node.template.templateSpans, function (templateSpan) {
                        write(", ");
                        var needsParens = templateSpan.expression.kind === 170
                            && templateSpan.expression.operatorToken.kind === 23;
                        emitParenthesizedIf(templateSpan.expression, needsParens);
                    });
                }
                write("))");
            }
            function emitTemplateExpression(node) {
                if (languageVersion >= 2) {
                    ts.forEachChild(node, emit);
                    return;
                }
                var emitOuterParens = ts.isExpression(node.parent)
                    && templateNeedsParens(node, node.parent);
                if (emitOuterParens) {
                    write("(");
                }
                var headEmitted = false;
                if (shouldEmitTemplateHead()) {
                    emitLiteral(node.head);
                    headEmitted = true;
                }
                for (var i = 0, n = node.templateSpans.length; i < n; i++) {
                    var templateSpan = node.templateSpans[i];
                    var needsParens = templateSpan.expression.kind !== 162
                        && comparePrecedenceToBinaryPlus(templateSpan.expression) !== 1;
                    if (i > 0 || headEmitted) {
                        write(" + ");
                    }
                    emitParenthesizedIf(templateSpan.expression, needsParens);
                    if (templateSpan.literal.text.length !== 0) {
                        write(" + ");
                        emitLiteral(templateSpan.literal);
                    }
                }
                if (emitOuterParens) {
                    write(")");
                }
                function shouldEmitTemplateHead() {
                    // If this expression has an empty head literal and the first template span has a non-empty
                    // literal, then emitting the empty head literal is not necessary.
                    //     `${ foo } and ${ bar }`
                    // can be emitted as
                    //     foo + " and " + bar
                    // This is because it is only required that one of the first two operands in the emit
                    // output must be a string literal, so that the other operand and all following operands
                    // are forced into strings.
                    //
                    // If the first template span has an empty literal, then the head must still be emitted.
                    //     `${ foo }${ bar }`
                    // must still be emitted as
                    //     "" + foo + bar
                    ts.Debug.assert(node.templateSpans.length !== 0);
                    return node.head.text.length !== 0 || node.templateSpans[0].literal.text.length === 0;
                }
                function templateNeedsParens(template, parent) {
                    switch (parent.kind) {
                        case 158:
                        case 159:
                            return parent.expression === template;
                        case 160:
                        case 162:
                            return false;
                        default:
                            return comparePrecedenceToBinaryPlus(parent) !== -1;
                    }
                }
                function comparePrecedenceToBinaryPlus(expression) {
                    switch (expression.kind) {
                        case 170:
                            switch (expression.operatorToken.kind) {
                                case 35:
                                case 36:
                                case 37:
                                    return 1;
                                case 33:
                                case 34:
                                    return 0;
                                default:
                                    return -1;
                            }
                        case 173:
                        case 171:
                            return -1;
                        default:
                            return 1;
                    }
                }
            }
            function emitTemplateSpan(span) {
                emit(span.expression);
                emit(span.literal);
            }
            function emitExpressionForPropertyName(node) {
                ts.Debug.assert(node.kind !== 153);
                if (node.kind === 8) {
                    emitLiteral(node);
                }
                else if (node.kind === 128) {
                    if (ts.nodeIsDecorated(node.parent)) {
                        if (!computedPropertyNamesToGeneratedNames) {
                            computedPropertyNamesToGeneratedNames = [];
                        }
                        var generatedName = computedPropertyNamesToGeneratedNames[ts.getNodeId(node)];
                        if (generatedName) {
                            write(generatedName);
                            return;
                        }
                        generatedName = createAndRecordTempVariable(0).text;
                        computedPropertyNamesToGeneratedNames[ts.getNodeId(node)] = generatedName;
                        write(generatedName);
                        write(" = ");
                    }
                    emit(node.expression);
                }
                else {
                    write("\"");
                    if (node.kind === 7) {
                        write(node.text);
                    }
                    else {
                        writeTextOfNode(currentSourceFile, node);
                    }
                    write("\"");
                }
            }
            function isNotExpressionIdentifier(node) {
                var parent = node.parent;
                switch (parent.kind) {
                    case 130:
                    case 199:
                    case 153:
                    case 133:
                    case 132:
                    case 225:
                    case 226:
                    case 227:
                    case 135:
                    case 134:
                    case 201:
                    case 137:
                    case 138:
                    case 163:
                    case 202:
                    case 203:
                    case 205:
                    case 206:
                    case 209:
                    case 211:
                    case 212:
                        return parent.name === node;
                    case 214:
                    case 218:
                        return parent.name === node || parent.propertyName === node;
                    case 191:
                    case 190:
                    case 215:
                        return false;
                    case 195:
                        return node.parent.label === node;
                }
            }
            function emitExpressionIdentifier(node) {
                var substitution = resolver.getExpressionNameSubstitution(node, getGeneratedNameForNode);
                if (substitution) {
                    write(substitution);
                }
                else {
                    writeTextOfNode(currentSourceFile, node);
                }
            }
            function getGeneratedNameForIdentifier(node) {
                if (ts.nodeIsSynthesized(node) || !blockScopedVariableToGeneratedName) {
                    return undefined;
                }
                var variableId = resolver.getBlockScopedVariableId(node);
                if (variableId === undefined) {
                    return undefined;
                }
                return blockScopedVariableToGeneratedName[variableId];
            }
            function emitIdentifier(node, allowGeneratedIdentifiers) {
                if (allowGeneratedIdentifiers) {
                    var generatedName = getGeneratedNameForIdentifier(node);
                    if (generatedName) {
                        write(generatedName);
                        return;
                    }
                }
                if (!node.parent) {
                    write(node.text);
                }
                else if (!isNotExpressionIdentifier(node)) {
                    emitExpressionIdentifier(node);
                }
                else {
                    writeTextOfNode(currentSourceFile, node);
                }
            }
            function emitThis(node) {
                if (resolver.getNodeCheckFlags(node) & 2) {
                    write("_this");
                }
                else {
                    write("this");
                }
            }
            function emitSuper(node) {
                if (languageVersion >= 2) {
                    write("super");
                }
                else {
                    var flags = resolver.getNodeCheckFlags(node);
                    if (flags & 16) {
                        write("_super.prototype");
                    }
                    else {
                        write("_super");
                    }
                }
            }
            function emitObjectBindingPattern(node) {
                write("{ ");
                var elements = node.elements;
                emitList(elements, 0, elements.length, false, elements.hasTrailingComma);
                write(" }");
            }
            function emitArrayBindingPattern(node) {
                write("[");
                var elements = node.elements;
                emitList(elements, 0, elements.length, false, elements.hasTrailingComma);
                write("]");
            }
            function emitBindingElement(node) {
                if (node.propertyName) {
                    emit(node.propertyName, false);
                    write(": ");
                }
                if (node.dotDotDotToken) {
                    write("...");
                }
                if (ts.isBindingPattern(node.name)) {
                    emit(node.name);
                }
                else {
                    emitModuleMemberName(node);
                }
                emitOptional(" = ", node.initializer);
            }
            function emitSpreadElementExpression(node) {
                write("...");
                emit(node.expression);
            }
            function emitYieldExpression(node) {
                write(ts.tokenToString(110));
                if (node.asteriskToken) {
                    write("*");
                }
                if (node.expression) {
                    write(" ");
                    emit(node.expression);
                }
            }
            function needsParenthesisForPropertyAccessOrInvocation(node) {
                switch (node.kind) {
                    case 65:
                    case 154:
                    case 156:
                    case 157:
                    case 158:
                    case 162:
                        return false;
                }
                return true;
            }
            function emitListWithSpread(elements, alwaysCopy, multiLine, trailingComma) {
                var pos = 0;
                var group = 0;
                var length = elements.length;
                while (pos < length) {
                    if (group === 1) {
                        write(".concat(");
                    }
                    else if (group > 1) {
                        write(", ");
                    }
                    var e = elements[pos];
                    if (e.kind === 174) {
                        e = e.expression;
                        emitParenthesizedIf(e, group === 0 && needsParenthesisForPropertyAccessOrInvocation(e));
                        pos++;
                        if (pos === length && group === 0 && alwaysCopy && e.kind !== 154) {
                            write(".slice()");
                        }
                    }
                    else {
                        var i = pos;
                        while (i < length && elements[i].kind !== 174) {
                            i++;
                        }
                        write("[");
                        if (multiLine) {
                            increaseIndent();
                        }
                        emitList(elements, pos, i - pos, multiLine, trailingComma && i === length);
                        if (multiLine) {
                            decreaseIndent();
                        }
                        write("]");
                        pos = i;
                    }
                    group++;
                }
                if (group > 1) {
                    write(")");
                }
            }
            function isSpreadElementExpression(node) {
                return node.kind === 174;
            }
            function emitArrayLiteral(node) {
                var elements = node.elements;
                if (elements.length === 0) {
                    write("[]");
                }
                else if (languageVersion >= 2 || !ts.forEach(elements, isSpreadElementExpression)) {
                    write("[");
                    emitLinePreservingList(node, node.elements, elements.hasTrailingComma, false);
                    write("]");
                }
                else {
                    emitListWithSpread(elements, true, (node.flags & 512) !== 0, elements.hasTrailingComma);
                }
            }
            function emitObjectLiteralBody(node, numElements) {
                if (numElements === 0) {
                    write("{}");
                    return;
                }
                write("{");
                if (numElements > 0) {
                    var properties = node.properties;
                    if (numElements === properties.length) {
                        emitLinePreservingList(node, properties, languageVersion >= 1, true);
                    }
                    else {
                        var multiLine = (node.flags & 512) !== 0;
                        if (!multiLine) {
                            write(" ");
                        }
                        else {
                            increaseIndent();
                        }
                        emitList(properties, 0, numElements, multiLine, false);
                        if (!multiLine) {
                            write(" ");
                        }
                        else {
                            decreaseIndent();
                        }
                    }
                }
                write("}");
            }
            function emitDownlevelObjectLiteralWithComputedProperties(node, firstComputedPropertyIndex) {
                var multiLine = (node.flags & 512) !== 0;
                var properties = node.properties;
                write("(");
                if (multiLine) {
                    increaseIndent();
                }
                var tempVar = createAndRecordTempVariable(0);
                emit(tempVar);
                write(" = ");
                emitObjectLiteralBody(node, firstComputedPropertyIndex);
                for (var i = firstComputedPropertyIndex, n = properties.length; i < n; i++) {
                    writeComma();
                    var property = properties[i];
                    emitStart(property);
                    if (property.kind === 137 || property.kind === 138) {
                        var accessors = ts.getAllAccessorDeclarations(node.properties, property);
                        if (property !== accessors.firstAccessor) {
                            continue;
                        }
                        write("Object.defineProperty(");
                        emit(tempVar);
                        write(", ");
                        emitStart(node.name);
                        emitExpressionForPropertyName(property.name);
                        emitEnd(property.name);
                        write(", {");
                        increaseIndent();
                        if (accessors.getAccessor) {
                            writeLine();
                            emitLeadingComments(accessors.getAccessor);
                            write("get: ");
                            emitStart(accessors.getAccessor);
                            write("function ");
                            emitSignatureAndBody(accessors.getAccessor);
                            emitEnd(accessors.getAccessor);
                            emitTrailingComments(accessors.getAccessor);
                            write(",");
                        }
                        if (accessors.setAccessor) {
                            writeLine();
                            emitLeadingComments(accessors.setAccessor);
                            write("set: ");
                            emitStart(accessors.setAccessor);
                            write("function ");
                            emitSignatureAndBody(accessors.setAccessor);
                            emitEnd(accessors.setAccessor);
                            emitTrailingComments(accessors.setAccessor);
                            write(",");
                        }
                        writeLine();
                        write("enumerable: true,");
                        writeLine();
                        write("configurable: true");
                        decreaseIndent();
                        writeLine();
                        write("})");
                        emitEnd(property);
                    }
                    else {
                        emitLeadingComments(property);
                        emitStart(property.name);
                        emit(tempVar);
                        emitMemberAccessForPropertyName(property.name);
                        emitEnd(property.name);
                        write(" = ");
                        if (property.kind === 225) {
                            emit(property.initializer);
                        }
                        else if (property.kind === 226) {
                            emitExpressionIdentifier(property.name);
                        }
                        else if (property.kind === 135) {
                            emitFunctionDeclaration(property);
                        }
                        else {
                            ts.Debug.fail("ObjectLiteralElement type not accounted for: " + property.kind);
                        }
                    }
                    emitEnd(property);
                }
                writeComma();
                emit(tempVar);
                if (multiLine) {
                    decreaseIndent();
                    writeLine();
                }
                write(")");
                function writeComma() {
                    if (multiLine) {
                        write(",");
                        writeLine();
                    }
                    else {
                        write(", ");
                    }
                }
            }
            function emitObjectLiteral(node) {
                var properties = node.properties;
                if (languageVersion < 2) {
                    var numProperties = properties.length;
                    var numInitialNonComputedProperties = numProperties;
                    for (var i = 0, n = properties.length; i < n; i++) {
                        if (properties[i].name.kind === 128) {
                            numInitialNonComputedProperties = i;
                            break;
                        }
                    }
                    var hasComputedProperty = numInitialNonComputedProperties !== properties.length;
                    if (hasComputedProperty) {
                        emitDownlevelObjectLiteralWithComputedProperties(node, numInitialNonComputedProperties);
                        return;
                    }
                }
                emitObjectLiteralBody(node, properties.length);
            }
            function createBinaryExpression(left, operator, right, startsOnNewLine) {
                var result = ts.createSynthesizedNode(170, startsOnNewLine);
                result.operatorToken = ts.createSynthesizedNode(operator);
                result.left = left;
                result.right = right;
                return result;
            }
            function createPropertyAccessExpression(expression, name) {
                var result = ts.createSynthesizedNode(156);
                result.expression = parenthesizeForAccess(expression);
                result.dotToken = ts.createSynthesizedNode(20);
                result.name = name;
                return result;
            }
            function createElementAccessExpression(expression, argumentExpression) {
                var result = ts.createSynthesizedNode(157);
                result.expression = parenthesizeForAccess(expression);
                result.argumentExpression = argumentExpression;
                return result;
            }
            function parenthesizeForAccess(expr) {
                if (ts.isLeftHandSideExpression(expr) && expr.kind !== 159 && expr.kind !== 7) {
                    return expr;
                }
                var node = ts.createSynthesizedNode(162);
                node.expression = expr;
                return node;
            }
            function emitComputedPropertyName(node) {
                write("[");
                emitExpressionForPropertyName(node);
                write("]");
            }
            function emitMethod(node) {
                if (languageVersion >= 2 && node.asteriskToken) {
                    write("*");
                }
                emit(node.name, false);
                if (languageVersion < 2) {
                    write(": function ");
                }
                emitSignatureAndBody(node);
            }
            function emitPropertyAssignment(node) {
                emit(node.name, false);
                write(": ");
                emit(node.initializer);
            }
            function emitShorthandPropertyAssignment(node) {
                emit(node.name, false);
                if (languageVersion < 2) {
                    write(": ");
                    var generatedName = getGeneratedNameForIdentifier(node.name);
                    if (generatedName) {
                        write(generatedName);
                    }
                    else {
                        emitExpressionIdentifier(node.name);
                    }
                }
                else if (resolver.getExpressionNameSubstitution(node.name, getGeneratedNameForNode)) {
                    write(": ");
                    emitExpressionIdentifier(node.name);
                }
            }
            function tryEmitConstantValue(node) {
                if (compilerOptions.separateCompilation) {
                    return false;
                }
                var constantValue = resolver.getConstantValue(node);
                if (constantValue !== undefined) {
                    write(constantValue.toString());
                    if (!compilerOptions.removeComments) {
                        var propertyName = node.kind === 156 ? ts.declarationNameToString(node.name) : ts.getTextOfNode(node.argumentExpression);
                        write(" /* " + propertyName + " */");
                    }
                    return true;
                }
                return false;
            }
            function indentIfOnDifferentLines(parent, node1, node2, valueToWriteWhenNotIndenting) {
                var realNodesAreOnDifferentLines = !ts.nodeIsSynthesized(parent) && !nodeEndIsOnSameLineAsNodeStart(node1, node2);
                var synthesizedNodeIsOnDifferentLine = synthesizedNodeStartsOnNewLine(node2);
                if (realNodesAreOnDifferentLines || synthesizedNodeIsOnDifferentLine) {
                    increaseIndent();
                    writeLine();
                    return true;
                }
                else {
                    if (valueToWriteWhenNotIndenting) {
                        write(valueToWriteWhenNotIndenting);
                    }
                    return false;
                }
            }
            function emitPropertyAccess(node) {
                if (tryEmitConstantValue(node)) {
                    return;
                }
                emit(node.expression);
                var indentedBeforeDot = indentIfOnDifferentLines(node, node.expression, node.dotToken);
                write(".");
                var indentedAfterDot = indentIfOnDifferentLines(node, node.dotToken, node.name);
                emit(node.name, false);
                decreaseIndentIf(indentedBeforeDot, indentedAfterDot);
            }
            function emitQualifiedName(node) {
                emit(node.left);
                write(".");
                emit(node.right);
            }
            function emitIndexedAccess(node) {
                if (tryEmitConstantValue(node)) {
                    return;
                }
                emit(node.expression);
                write("[");
                emit(node.argumentExpression);
                write("]");
            }
            function hasSpreadElement(elements) {
                return ts.forEach(elements, function (e) { return e.kind === 174; });
            }
            function skipParentheses(node) {
                while (node.kind === 162 || node.kind === 161) {
                    node = node.expression;
                }
                return node;
            }
            function emitCallTarget(node) {
                if (node.kind === 65 || node.kind === 93 || node.kind === 91) {
                    emit(node);
                    return node;
                }
                var temp = createAndRecordTempVariable(0);
                write("(");
                emit(temp);
                write(" = ");
                emit(node);
                write(")");
                return temp;
            }
            function emitCallWithSpread(node) {
                var target;
                var expr = skipParentheses(node.expression);
                if (expr.kind === 156) {
                    target = emitCallTarget(expr.expression);
                    write(".");
                    emit(expr.name);
                }
                else if (expr.kind === 157) {
                    target = emitCallTarget(expr.expression);
                    write("[");
                    emit(expr.argumentExpression);
                    write("]");
                }
                else if (expr.kind === 91) {
                    target = expr;
                    write("_super");
                }
                else {
                    emit(node.expression);
                }
                write(".apply(");
                if (target) {
                    if (target.kind === 91) {
                        emitThis(target);
                    }
                    else {
                        emit(target);
                    }
                }
                else {
                    write("void 0");
                }
                write(", ");
                emitListWithSpread(node.arguments, false, false, false);
                write(")");
            }
            function emitCallExpression(node) {
                if (languageVersion < 2 && hasSpreadElement(node.arguments)) {
                    emitCallWithSpread(node);
                    return;
                }
                var superCall = false;
                if (node.expression.kind === 91) {
                    emitSuper(node.expression);
                    superCall = true;
                }
                else {
                    emit(node.expression);
                    superCall = node.expression.kind === 156 && node.expression.expression.kind === 91;
                }
                if (superCall && languageVersion < 2) {
                    write(".call(");
                    emitThis(node.expression);
                    if (node.arguments.length) {
                        write(", ");
                        emitCommaList(node.arguments);
                    }
                    write(")");
                }
                else {
                    write("(");
                    emitCommaList(node.arguments);
                    write(")");
                }
            }
            function emitNewExpression(node) {
                write("new ");
                emit(node.expression);
                if (node.arguments) {
                    write("(");
                    emitCommaList(node.arguments);
                    write(")");
                }
            }
            function emitTaggedTemplateExpression(node) {
                if (languageVersion >= 2) {
                    emit(node.tag);
                    write(" ");
                    emit(node.template);
                }
                else {
                    emitDownlevelTaggedTemplate(node);
                }
            }
            function emitParenExpression(node) {
                if (!node.parent || node.parent.kind !== 164) {
                    if (node.expression.kind === 161) {
                        var operand = node.expression.expression;
                        while (operand.kind == 161) {
                            operand = operand.expression;
                        }
                        if (operand.kind !== 168 &&
                            operand.kind !== 167 &&
                            operand.kind !== 166 &&
                            operand.kind !== 165 &&
                            operand.kind !== 169 &&
                            operand.kind !== 159 &&
                            !(operand.kind === 158 && node.parent.kind === 159) &&
                            !(operand.kind === 163 && node.parent.kind === 158)) {
                            emit(operand);
                            return;
                        }
                    }
                }
                write("(");
                emit(node.expression);
                write(")");
            }
            function emitDeleteExpression(node) {
                write(ts.tokenToString(74));
                write(" ");
                emit(node.expression);
            }
            function emitVoidExpression(node) {
                write(ts.tokenToString(99));
                write(" ");
                emit(node.expression);
            }
            function emitTypeOfExpression(node) {
                write(ts.tokenToString(97));
                write(" ");
                emit(node.expression);
            }
            function isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node) {
                if (!isCurrentFileSystemExternalModule() || node.kind !== 65 || ts.nodeIsSynthesized(node)) {
                    return false;
                }
                var isVariableDeclarationOrBindingElement = node.parent && (node.parent.kind === 199 || node.parent.kind === 153);
                var targetDeclaration = isVariableDeclarationOrBindingElement
                    ? node.parent
                    : resolver.getReferencedValueDeclaration(node);
                return isSourceFileLevelDeclarationInSystemJsModule(targetDeclaration, true);
            }
            function emitPrefixUnaryExpression(node) {
                var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.operand);
                if (exportChanged) {
                    write(exportFunctionForFile + "(\"");
                    emitNodeWithoutSourceMap(node.operand);
                    write("\", ");
                }
                write(ts.tokenToString(node.operator));
                if (node.operand.kind === 168) {
                    var operand = node.operand;
                    if (node.operator === 33 && (operand.operator === 33 || operand.operator === 38)) {
                        write(" ");
                    }
                    else if (node.operator === 34 && (operand.operator === 34 || operand.operator === 39)) {
                        write(" ");
                    }
                }
                emit(node.operand);
                if (exportChanged) {
                    write(")");
                }
            }
            function emitPostfixUnaryExpression(node) {
                var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.operand);
                if (exportChanged) {
                    write("(" + exportFunctionForFile + "(\"");
                    emitNodeWithoutSourceMap(node.operand);
                    write("\", ");
                    write(ts.tokenToString(node.operator));
                    emit(node.operand);
                    if (node.operator === 38) {
                        write(") - 1)");
                    }
                    else {
                        write(") + 1)");
                    }
                }
                else {
                    emit(node.operand);
                    write(ts.tokenToString(node.operator));
                }
            }
            function shouldHoistDeclarationInSystemJsModule(node) {
                return isSourceFileLevelDeclarationInSystemJsModule(node, false);
            }
            function isSourceFileLevelDeclarationInSystemJsModule(node, isExported) {
                if (!node || languageVersion >= 2 || !isCurrentFileSystemExternalModule()) {
                    return false;
                }
                var current = node;
                while (current) {
                    if (current.kind === 228) {
                        return !isExported || ((ts.getCombinedNodeFlags(node) & 1) !== 0);
                    }
                    else if (ts.isFunctionLike(current) || current.kind === 207) {
                        return false;
                    }
                    else {
                        current = current.parent;
                    }
                }
            }
            function emitBinaryExpression(node) {
                if (languageVersion < 2 && node.operatorToken.kind === 53 &&
                    (node.left.kind === 155 || node.left.kind === 154)) {
                    emitDestructuring(node, node.parent.kind === 183);
                }
                else {
                    var exportChanged = node.operatorToken.kind >= 53 &&
                        node.operatorToken.kind <= 64 &&
                        isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.left);
                    if (exportChanged) {
                        write(exportFunctionForFile + "(\"");
                        emitNodeWithoutSourceMap(node.left);
                        write("\", ");
                    }
                    emit(node.left);
                    var indentedBeforeOperator = indentIfOnDifferentLines(node, node.left, node.operatorToken, node.operatorToken.kind !== 23 ? " " : undefined);
                    write(ts.tokenToString(node.operatorToken.kind));
                    var indentedAfterOperator = indentIfOnDifferentLines(node, node.operatorToken, node.right, " ");
                    emit(node.right);
                    decreaseIndentIf(indentedBeforeOperator, indentedAfterOperator);
                    if (exportChanged) {
                        write(")");
                    }
                }
            }
            function synthesizedNodeStartsOnNewLine(node) {
                return ts.nodeIsSynthesized(node) && node.startsOnNewLine;
            }
            function emitConditionalExpression(node) {
                emit(node.condition);
                var indentedBeforeQuestion = indentIfOnDifferentLines(node, node.condition, node.questionToken, " ");
                write("?");
                var indentedAfterQuestion = indentIfOnDifferentLines(node, node.questionToken, node.whenTrue, " ");
                emit(node.whenTrue);
                decreaseIndentIf(indentedBeforeQuestion, indentedAfterQuestion);
                var indentedBeforeColon = indentIfOnDifferentLines(node, node.whenTrue, node.colonToken, " ");
                write(":");
                var indentedAfterColon = indentIfOnDifferentLines(node, node.colonToken, node.whenFalse, " ");
                emit(node.whenFalse);
                decreaseIndentIf(indentedBeforeColon, indentedAfterColon);
            }
            function decreaseIndentIf(value1, value2) {
                if (value1) {
                    decreaseIndent();
                }
                if (value2) {
                    decreaseIndent();
                }
            }
            function isSingleLineEmptyBlock(node) {
                if (node && node.kind === 180) {
                    var block = node;
                    return block.statements.length === 0 && nodeEndIsOnSameLineAsNodeStart(block, block);
                }
            }
            function emitBlock(node) {
                if (isSingleLineEmptyBlock(node)) {
                    emitToken(14, node.pos);
                    write(" ");
                    emitToken(15, node.statements.end);
                    return;
                }
                emitToken(14, node.pos);
                increaseIndent();
                scopeEmitStart(node.parent);
                if (node.kind === 207) {
                    ts.Debug.assert(node.parent.kind === 206);
                    emitCaptureThisForNodeIfNecessary(node.parent);
                }
                emitLines(node.statements);
                if (node.kind === 207) {
                    emitTempDeclarations(true);
                }
                decreaseIndent();
                writeLine();
                emitToken(15, node.statements.end);
                scopeEmitEnd();
            }
            function emitEmbeddedStatement(node) {
                if (node.kind === 180) {
                    write(" ");
                    emit(node);
                }
                else {
                    increaseIndent();
                    writeLine();
                    emit(node);
                    decreaseIndent();
                }
            }
            function emitExpressionStatement(node) {
                emitParenthesizedIf(node.expression, node.expression.kind === 164);
                write(";");
            }
            function emitIfStatement(node) {
                var endPos = emitToken(84, node.pos);
                write(" ");
                endPos = emitToken(16, endPos);
                emit(node.expression);
                emitToken(17, node.expression.end);
                emitEmbeddedStatement(node.thenStatement);
                if (node.elseStatement) {
                    writeLine();
                    emitToken(76, node.thenStatement.end);
                    if (node.elseStatement.kind === 184) {
                        write(" ");
                        emit(node.elseStatement);
                    }
                    else {
                        emitEmbeddedStatement(node.elseStatement);
                    }
                }
            }
            function emitDoStatement(node) {
                write("do");
                emitEmbeddedStatement(node.statement);
                if (node.statement.kind === 180) {
                    write(" ");
                }
                else {
                    writeLine();
                }
                write("while (");
                emit(node.expression);
                write(");");
            }
            function emitWhileStatement(node) {
                write("while (");
                emit(node.expression);
                write(")");
                emitEmbeddedStatement(node.statement);
            }
            function tryEmitStartOfVariableDeclarationList(decl, startPos) {
                if (shouldHoistVariable(decl, true)) {
                    return false;
                }
                var tokenKind = 98;
                if (decl && languageVersion >= 2) {
                    if (ts.isLet(decl)) {
                        tokenKind = 104;
                    }
                    else if (ts.isConst(decl)) {
                        tokenKind = 70;
                    }
                }
                if (startPos !== undefined) {
                    emitToken(tokenKind, startPos);
                    write(" ");
                }
                else {
                    switch (tokenKind) {
                        case 98:
                            write("var ");
                            break;
                        case 104:
                            write("let ");
                            break;
                        case 70:
                            write("const ");
                            break;
                    }
                }
                return true;
            }
            function emitVariableDeclarationListSkippingUninitializedEntries(list) {
                var started = false;
                for (var _a = 0, _b = list.declarations; _a < _b.length; _a++) {
                    var decl = _b[_a];
                    if (!decl.initializer) {
                        continue;
                    }
                    if (!started) {
                        started = true;
                    }
                    else {
                        write(", ");
                    }
                    emit(decl);
                }
                return started;
            }
            function emitForStatement(node) {
                var endPos = emitToken(82, node.pos);
                write(" ");
                endPos = emitToken(16, endPos);
                if (node.initializer && node.initializer.kind === 200) {
                    var variableDeclarationList = node.initializer;
                    var startIsEmitted = tryEmitStartOfVariableDeclarationList(variableDeclarationList, endPos);
                    if (startIsEmitted) {
                        emitCommaList(variableDeclarationList.declarations);
                    }
                    else {
                        emitVariableDeclarationListSkippingUninitializedEntries(variableDeclarationList);
                    }
                }
                else if (node.initializer) {
                    emit(node.initializer);
                }
                write(";");
                emitOptional(" ", node.condition);
                write(";");
                emitOptional(" ", node.incrementor);
                write(")");
                emitEmbeddedStatement(node.statement);
            }
            function emitForInOrForOfStatement(node) {
                if (languageVersion < 2 && node.kind === 189) {
                    return emitDownLevelForOfStatement(node);
                }
                var endPos = emitToken(82, node.pos);
                write(" ");
                endPos = emitToken(16, endPos);
                if (node.initializer.kind === 200) {
                    var variableDeclarationList = node.initializer;
                    if (variableDeclarationList.declarations.length >= 1) {
                        tryEmitStartOfVariableDeclarationList(variableDeclarationList, endPos);
                        emit(variableDeclarationList.declarations[0]);
                    }
                }
                else {
                    emit(node.initializer);
                }
                if (node.kind === 188) {
                    write(" in ");
                }
                else {
                    write(" of ");
                }
                emit(node.expression);
                emitToken(17, node.expression.end);
                emitEmbeddedStatement(node.statement);
            }
            function emitDownLevelForOfStatement(node) {
                // The following ES6 code:
                //
                //    for (let v of expr) { }
                //
                // should be emitted as
                //
                //    for (let _i = 0, _a = expr; _i < _a.length; _i++) {
                //        let v = _a[_i];
                //    }
                //
                // where _a and _i are temps emitted to capture the RHS and the counter,
                // respectively.
                // When the left hand side is an expression instead of a let declaration,
                // the "let v" is not emitted.
                // When the left hand side is a let/const, the v is renamed if there is
                // another v in scope.
                // Note that all assignments to the LHS are emitted in the body, including
                // all destructuring.
                // Note also that because an extra statement is needed to assign to the LHS,
                // for-of bodies are always emitted as blocks.
                var endPos = emitToken(82, node.pos);
                write(" ");
                endPos = emitToken(16, endPos);
                var rhsIsIdentifier = node.expression.kind === 65;
                var counter = createTempVariable(268435456);
                var rhsReference = rhsIsIdentifier ? node.expression : createTempVariable(0);
                emitStart(node.expression);
                write("var ");
                emitNodeWithoutSourceMap(counter);
                write(" = 0");
                emitEnd(node.expression);
                if (!rhsIsIdentifier) {
                    write(", ");
                    emitStart(node.expression);
                    emitNodeWithoutSourceMap(rhsReference);
                    write(" = ");
                    emitNodeWithoutSourceMap(node.expression);
                    emitEnd(node.expression);
                }
                write("; ");
                emitStart(node.initializer);
                emitNodeWithoutSourceMap(counter);
                write(" < ");
                emitNodeWithoutSourceMap(rhsReference);
                write(".length");
                emitEnd(node.initializer);
                write("; ");
                emitStart(node.initializer);
                emitNodeWithoutSourceMap(counter);
                write("++");
                emitEnd(node.initializer);
                emitToken(17, node.expression.end);
                write(" {");
                writeLine();
                increaseIndent();
                var rhsIterationValue = createElementAccessExpression(rhsReference, counter);
                emitStart(node.initializer);
                if (node.initializer.kind === 200) {
                    write("var ");
                    var variableDeclarationList = node.initializer;
                    if (variableDeclarationList.declarations.length > 0) {
                        var declaration = variableDeclarationList.declarations[0];
                        if (ts.isBindingPattern(declaration.name)) {
                            emitDestructuring(declaration, false, rhsIterationValue);
                        }
                        else {
                            emitNodeWithoutSourceMap(declaration);
                            write(" = ");
                            emitNodeWithoutSourceMap(rhsIterationValue);
                        }
                    }
                    else {
                        emitNodeWithoutSourceMap(createTempVariable(0));
                        write(" = ");
                        emitNodeWithoutSourceMap(rhsIterationValue);
                    }
                }
                else {
                    var assignmentExpression = createBinaryExpression(node.initializer, 53, rhsIterationValue, false);
                    if (node.initializer.kind === 154 || node.initializer.kind === 155) {
                        emitDestructuring(assignmentExpression, true, undefined);
                    }
                    else {
                        emitNodeWithoutSourceMap(assignmentExpression);
                    }
                }
                emitEnd(node.initializer);
                write(";");
                if (node.statement.kind === 180) {
                    emitLines(node.statement.statements);
                }
                else {
                    writeLine();
                    emit(node.statement);
                }
                writeLine();
                decreaseIndent();
                write("}");
            }
            function emitBreakOrContinueStatement(node) {
                emitToken(node.kind === 191 ? 66 : 71, node.pos);
                emitOptional(" ", node.label);
                write(";");
            }
            function emitReturnStatement(node) {
                emitToken(90, node.pos);
                emitOptional(" ", node.expression);
                write(";");
            }
            function emitWithStatement(node) {
                write("with (");
                emit(node.expression);
                write(")");
                emitEmbeddedStatement(node.statement);
            }
            function emitSwitchStatement(node) {
                var endPos = emitToken(92, node.pos);
                write(" ");
                emitToken(16, endPos);
                emit(node.expression);
                endPos = emitToken(17, node.expression.end);
                write(" ");
                emitCaseBlock(node.caseBlock, endPos);
            }
            function emitCaseBlock(node, startPos) {
                emitToken(14, startPos);
                increaseIndent();
                emitLines(node.clauses);
                decreaseIndent();
                writeLine();
                emitToken(15, node.clauses.end);
            }
            function nodeStartPositionsAreOnSameLine(node1, node2) {
                return ts.getLineOfLocalPosition(currentSourceFile, ts.skipTrivia(currentSourceFile.text, node1.pos)) ===
                    ts.getLineOfLocalPosition(currentSourceFile, ts.skipTrivia(currentSourceFile.text, node2.pos));
            }
            function nodeEndPositionsAreOnSameLine(node1, node2) {
                return ts.getLineOfLocalPosition(currentSourceFile, node1.end) ===
                    ts.getLineOfLocalPosition(currentSourceFile, node2.end);
            }
            function nodeEndIsOnSameLineAsNodeStart(node1, node2) {
                return ts.getLineOfLocalPosition(currentSourceFile, node1.end) ===
                    ts.getLineOfLocalPosition(currentSourceFile, ts.skipTrivia(currentSourceFile.text, node2.pos));
            }
            function emitCaseOrDefaultClause(node) {
                if (node.kind === 221) {
                    write("case ");
                    emit(node.expression);
                    write(":");
                }
                else {
                    write("default:");
                }
                if (node.statements.length === 1 && nodeStartPositionsAreOnSameLine(node, node.statements[0])) {
                    write(" ");
                    emit(node.statements[0]);
                }
                else {
                    increaseIndent();
                    emitLines(node.statements);
                    decreaseIndent();
                }
            }
            function emitThrowStatement(node) {
                write("throw ");
                emit(node.expression);
                write(";");
            }
            function emitTryStatement(node) {
                write("try ");
                emit(node.tryBlock);
                emit(node.catchClause);
                if (node.finallyBlock) {
                    writeLine();
                    write("finally ");
                    emit(node.finallyBlock);
                }
            }
            function emitCatchClause(node) {
                writeLine();
                var endPos = emitToken(68, node.pos);
                write(" ");
                emitToken(16, endPos);
                emit(node.variableDeclaration);
                emitToken(17, node.variableDeclaration ? node.variableDeclaration.end : endPos);
                write(" ");
                emitBlock(node.block);
            }
            function emitDebuggerStatement(node) {
                emitToken(72, node.pos);
                write(";");
            }
            function emitLabelledStatement(node) {
                emit(node.label);
                write(": ");
                emit(node.statement);
            }
            function getContainingModule(node) {
                do {
                    node = node.parent;
                } while (node && node.kind !== 206);
                return node;
            }
            function emitContainingModuleName(node) {
                var container = getContainingModule(node);
                write(container ? getGeneratedNameForNode(container) : "exports");
            }
            function emitModuleMemberName(node) {
                emitStart(node.name);
                if (ts.getCombinedNodeFlags(node) & 1) {
                    var container = getContainingModule(node);
                    if (container) {
                        write(getGeneratedNameForNode(container));
                        write(".");
                    }
                    else if (languageVersion < 2 && compilerOptions.module !== 4) {
                        write("exports.");
                    }
                }
                emitNodeWithoutSourceMap(node.name);
                emitEnd(node.name);
            }
            function createVoidZero() {
                var zero = ts.createSynthesizedNode(7);
                zero.text = "0";
                var result = ts.createSynthesizedNode(167);
                result.expression = zero;
                return result;
            }
            function emitExportMemberAssignment(node) {
                if (node.flags & 1) {
                    writeLine();
                    emitStart(node);
                    if (compilerOptions.module === 4 && node.parent === currentSourceFile) {
                        write(exportFunctionForFile + "(\"");
                        if (node.flags & 256) {
                            write("default");
                        }
                        else {
                            emitNodeWithoutSourceMap(node.name);
                        }
                        write("\", ");
                        emitDeclarationName(node);
                        write(")");
                    }
                    else {
                        if (node.flags & 256) {
                            if (languageVersion === 0) {
                                write("exports[\"default\"]");
                            }
                            else {
                                write("exports.default");
                            }
                        }
                        else {
                            emitModuleMemberName(node);
                        }
                        write(" = ");
                        emitDeclarationName(node);
                    }
                    emitEnd(node);
                    write(";");
                }
            }
            function emitExportMemberAssignments(name) {
                if (!exportEquals && exportSpecifiers && ts.hasProperty(exportSpecifiers, name.text)) {
                    for (var _a = 0, _b = exportSpecifiers[name.text]; _a < _b.length; _a++) {
                        var specifier = _b[_a];
                        writeLine();
                        if (compilerOptions.module === 4) {
                            emitStart(specifier.name);
                            write(exportFunctionForFile + "(\"");
                            emitNodeWithoutSourceMap(specifier.name);
                            write("\", ");
                            emitExpressionIdentifier(name);
                            write(")");
                            emitEnd(specifier.name);
                        }
                        else {
                            emitStart(specifier.name);
                            emitContainingModuleName(specifier);
                            write(".");
                            emitNodeWithoutSourceMap(specifier.name);
                            emitEnd(specifier.name);
                            write(" = ");
                            emitExpressionIdentifier(name);
                        }
                        write(";");
                    }
                }
            }
            function emitDestructuring(root, isAssignmentExpressionStatement, value) {
                var emitCount = 0;
                var canDefineTempVariablesInPlace = false;
                if (root.kind === 199) {
                    var isExported = ts.getCombinedNodeFlags(root) & 1;
                    var isSourceLevelForSystemModuleKind = shouldHoistDeclarationInSystemJsModule(root);
                    canDefineTempVariablesInPlace = !isExported && !isSourceLevelForSystemModuleKind;
                }
                else if (root.kind === 130) {
                    canDefineTempVariablesInPlace = true;
                }
                if (root.kind === 170) {
                    emitAssignmentExpression(root);
                }
                else {
                    ts.Debug.assert(!isAssignmentExpressionStatement);
                    emitBindingElement(root, value);
                }
                function emitAssignment(name, value) {
                    if (emitCount++) {
                        write(", ");
                    }
                    renameNonTopLevelLetAndConst(name);
                    var isVariableDeclarationOrBindingElement = name.parent && (name.parent.kind === 199 || name.parent.kind === 153);
                    var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(name);
                    if (exportChanged) {
                        write(exportFunctionForFile + "(\"");
                        emitNodeWithoutSourceMap(name);
                        write("\", ");
                    }
                    if (isVariableDeclarationOrBindingElement) {
                        emitModuleMemberName(name.parent);
                    }
                    else {
                        emit(name);
                    }
                    write(" = ");
                    emit(value);
                    if (exportChanged) {
                        write(")");
                    }
                }
                function ensureIdentifier(expr) {
                    if (expr.kind !== 65) {
                        var identifier = createTempVariable(0);
                        if (!canDefineTempVariablesInPlace) {
                            recordTempDeclaration(identifier);
                        }
                        emitAssignment(identifier, expr);
                        expr = identifier;
                    }
                    return expr;
                }
                function createDefaultValueCheck(value, defaultValue) {
                    value = ensureIdentifier(value);
                    var equals = ts.createSynthesizedNode(170);
                    equals.left = value;
                    equals.operatorToken = ts.createSynthesizedNode(30);
                    equals.right = createVoidZero();
                    return createConditionalExpression(equals, defaultValue, value);
                }
                function createConditionalExpression(condition, whenTrue, whenFalse) {
                    var cond = ts.createSynthesizedNode(171);
                    cond.condition = condition;
                    cond.questionToken = ts.createSynthesizedNode(50);
                    cond.whenTrue = whenTrue;
                    cond.colonToken = ts.createSynthesizedNode(51);
                    cond.whenFalse = whenFalse;
                    return cond;
                }
                function createNumericLiteral(value) {
                    var node = ts.createSynthesizedNode(7);
                    node.text = "" + value;
                    return node;
                }
                function createPropertyAccessForDestructuringProperty(object, propName) {
                    if (propName.kind !== 65) {
                        return createElementAccessExpression(object, propName);
                    }
                    return createPropertyAccessExpression(object, propName);
                }
                function createSliceCall(value, sliceIndex) {
                    var call = ts.createSynthesizedNode(158);
                    var sliceIdentifier = ts.createSynthesizedNode(65);
                    sliceIdentifier.text = "slice";
                    call.expression = createPropertyAccessExpression(value, sliceIdentifier);
                    call.arguments = ts.createSynthesizedNodeArray();
                    call.arguments[0] = createNumericLiteral(sliceIndex);
                    return call;
                }
                function emitObjectLiteralAssignment(target, value) {
                    var properties = target.properties;
                    if (properties.length !== 1) {
                        value = ensureIdentifier(value);
                    }
                    for (var _a = 0; _a < properties.length; _a++) {
                        var p = properties[_a];
                        if (p.kind === 225 || p.kind === 226) {
                            var propName = (p.name);
                            emitDestructuringAssignment(p.initializer || propName, createPropertyAccessForDestructuringProperty(value, propName));
                        }
                    }
                }
                function emitArrayLiteralAssignment(target, value) {
                    var elements = target.elements;
                    if (elements.length !== 1) {
                        value = ensureIdentifier(value);
                    }
                    for (var i = 0; i < elements.length; i++) {
                        var e = elements[i];
                        if (e.kind !== 176) {
                            if (e.kind !== 174) {
                                emitDestructuringAssignment(e, createElementAccessExpression(value, createNumericLiteral(i)));
                            }
                            else if (i === elements.length - 1) {
                                emitDestructuringAssignment(e.expression, createSliceCall(value, i));
                            }
                        }
                    }
                }
                function emitDestructuringAssignment(target, value) {
                    if (target.kind === 170 && target.operatorToken.kind === 53) {
                        value = createDefaultValueCheck(value, target.right);
                        target = target.left;
                    }
                    if (target.kind === 155) {
                        emitObjectLiteralAssignment(target, value);
                    }
                    else if (target.kind === 154) {
                        emitArrayLiteralAssignment(target, value);
                    }
                    else {
                        emitAssignment(target, value);
                    }
                }
                function emitAssignmentExpression(root) {
                    var target = root.left;
                    var value = root.right;
                    if (isAssignmentExpressionStatement) {
                        emitDestructuringAssignment(target, value);
                    }
                    else {
                        if (root.parent.kind !== 162) {
                            write("(");
                        }
                        value = ensureIdentifier(value);
                        emitDestructuringAssignment(target, value);
                        write(", ");
                        emit(value);
                        if (root.parent.kind !== 162) {
                            write(")");
                        }
                    }
                }
                function emitBindingElement(target, value) {
                    if (target.initializer) {
                        value = value ? createDefaultValueCheck(value, target.initializer) : target.initializer;
                    }
                    else if (!value) {
                        value = createVoidZero();
                    }
                    if (ts.isBindingPattern(target.name)) {
                        var pattern = target.name;
                        var elements = pattern.elements;
                        if (elements.length !== 1) {
                            value = ensureIdentifier(value);
                        }
                        for (var i = 0; i < elements.length; i++) {
                            var element = elements[i];
                            if (pattern.kind === 151) {
                                var propName = element.propertyName || element.name;
                                emitBindingElement(element, createPropertyAccessForDestructuringProperty(value, propName));
                            }
                            else if (element.kind !== 176) {
                                if (!element.dotDotDotToken) {
                                    emitBindingElement(element, createElementAccessExpression(value, createNumericLiteral(i)));
                                }
                                else if (i === elements.length - 1) {
                                    emitBindingElement(element, createSliceCall(value, i));
                                }
                            }
                        }
                    }
                    else {
                        emitAssignment(target.name, value);
                    }
                }
            }
            function emitVariableDeclaration(node) {
                if (ts.isBindingPattern(node.name)) {
                    if (languageVersion < 2) {
                        emitDestructuring(node, false);
                    }
                    else {
                        emit(node.name);
                        emitOptional(" = ", node.initializer);
                    }
                }
                else {
                    renameNonTopLevelLetAndConst(node.name);
                    var initializer = node.initializer;
                    if (!initializer && languageVersion < 2) {
                        var isUninitializedLet = (resolver.getNodeCheckFlags(node) & 256) &&
                            (getCombinedFlagsForIdentifier(node.name) & 4096);
                        if (isUninitializedLet &&
                            node.parent.parent.kind !== 188 &&
                            node.parent.parent.kind !== 189) {
                            initializer = createVoidZero();
                        }
                    }
                    var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.name);
                    if (exportChanged) {
                        write(exportFunctionForFile + "(\"");
                        emitNodeWithoutSourceMap(node.name);
                        write("\", ");
                    }
                    emitModuleMemberName(node);
                    emitOptional(" = ", initializer);
                    if (exportChanged) {
                        write(")");
                    }
                }
            }
            function emitExportVariableAssignments(node) {
                if (node.kind === 176) {
                    return;
                }
                var name = node.name;
                if (name.kind === 65) {
                    emitExportMemberAssignments(name);
                }
                else if (ts.isBindingPattern(name)) {
                    ts.forEach(name.elements, emitExportVariableAssignments);
                }
            }
            function getCombinedFlagsForIdentifier(node) {
                if (!node.parent || (node.parent.kind !== 199 && node.parent.kind !== 153)) {
                    return 0;
                }
                return ts.getCombinedNodeFlags(node.parent);
            }
            function renameNonTopLevelLetAndConst(node) {
                if (languageVersion >= 2 ||
                    ts.nodeIsSynthesized(node) ||
                    node.kind !== 65 ||
                    (node.parent.kind !== 199 && node.parent.kind !== 153)) {
                    return;
                }
                var combinedFlags = getCombinedFlagsForIdentifier(node);
                if (((combinedFlags & 12288) === 0) || combinedFlags & 1) {
                    return;
                }
                var list = ts.getAncestor(node, 200);
                if (list.parent.kind === 181) {
                    var isSourceFileLevelBinding = list.parent.parent.kind === 228;
                    var isModuleLevelBinding = list.parent.parent.kind === 207;
                    var isFunctionLevelBinding = list.parent.parent.kind === 180 && ts.isFunctionLike(list.parent.parent.parent);
                    if (isSourceFileLevelBinding || isModuleLevelBinding || isFunctionLevelBinding) {
                        return;
                    }
                }
                var blockScopeContainer = ts.getEnclosingBlockScopeContainer(node);
                var parent = blockScopeContainer.kind === 228
                    ? blockScopeContainer
                    : blockScopeContainer.parent;
                if (resolver.resolvesToSomeValue(parent, node.text)) {
                    var variableId = resolver.getBlockScopedVariableId(node);
                    if (!blockScopedVariableToGeneratedName) {
                        blockScopedVariableToGeneratedName = [];
                    }
                    var generatedName = makeUniqueName(node.text);
                    blockScopedVariableToGeneratedName[variableId] = generatedName;
                }
            }
            function isES6ExportedDeclaration(node) {
                return !!(node.flags & 1) &&
                    languageVersion >= 2 &&
                    node.parent.kind === 228;
            }
            function emitVariableStatement(node) {
                var startIsEmitted = false;
                if (node.flags & 1) {
                    if (isES6ExportedDeclaration(node)) {
                        write("export ");
                        startIsEmitted = tryEmitStartOfVariableDeclarationList(node.declarationList);
                    }
                }
                else {
                    startIsEmitted = tryEmitStartOfVariableDeclarationList(node.declarationList);
                }
                if (startIsEmitted) {
                    emitCommaList(node.declarationList.declarations);
                    write(";");
                }
                else {
                    var atLeastOneItem = emitVariableDeclarationListSkippingUninitializedEntries(node.declarationList);
                    if (atLeastOneItem) {
                        write(";");
                    }
                }
                if (languageVersion < 2 && node.parent === currentSourceFile) {
                    ts.forEach(node.declarationList.declarations, emitExportVariableAssignments);
                }
            }
            function emitParameter(node) {
                if (languageVersion < 2) {
                    if (ts.isBindingPattern(node.name)) {
                        var name_19 = createTempVariable(0);
                        if (!tempParameters) {
                            tempParameters = [];
                        }
                        tempParameters.push(name_19);
                        emit(name_19);
                    }
                    else {
                        emit(node.name);
                    }
                }
                else {
                    if (node.dotDotDotToken) {
                        write("...");
                    }
                    emit(node.name);
                    emitOptional(" = ", node.initializer);
                }
            }
            function emitDefaultValueAssignments(node) {
                if (languageVersion < 2) {
                    var tempIndex = 0;
                    ts.forEach(node.parameters, function (p) {
                        if (p.dotDotDotToken) {
                            return;
                        }
                        if (ts.isBindingPattern(p.name)) {
                            writeLine();
                            write("var ");
                            emitDestructuring(p, false, tempParameters[tempIndex]);
                            write(";");
                            tempIndex++;
                        }
                        else if (p.initializer) {
                            writeLine();
                            emitStart(p);
                            write("if (");
                            emitNodeWithoutSourceMap(p.name);
                            write(" === void 0)");
                            emitEnd(p);
                            write(" { ");
                            emitStart(p);
                            emitNodeWithoutSourceMap(p.name);
                            write(" = ");
                            emitNodeWithoutSourceMap(p.initializer);
                            emitEnd(p);
                            write("; }");
                        }
                    });
                }
            }
            function emitRestParameter(node) {
                if (languageVersion < 2 && ts.hasRestParameters(node)) {
                    var restIndex = node.parameters.length - 1;
                    var restParam = node.parameters[restIndex];
                    if (ts.isBindingPattern(restParam.name)) {
                        return;
                    }
                    var tempName = createTempVariable(268435456).text;
                    writeLine();
                    emitLeadingComments(restParam);
                    emitStart(restParam);
                    write("var ");
                    emitNodeWithoutSourceMap(restParam.name);
                    write(" = [];");
                    emitEnd(restParam);
                    emitTrailingComments(restParam);
                    writeLine();
                    write("for (");
                    emitStart(restParam);
                    write("var " + tempName + " = " + restIndex + ";");
                    emitEnd(restParam);
                    write(" ");
                    emitStart(restParam);
                    write(tempName + " < arguments.length;");
                    emitEnd(restParam);
                    write(" ");
                    emitStart(restParam);
                    write(tempName + "++");
                    emitEnd(restParam);
                    write(") {");
                    increaseIndent();
                    writeLine();
                    emitStart(restParam);
                    emitNodeWithoutSourceMap(restParam.name);
                    write("[" + tempName + " - " + restIndex + "] = arguments[" + tempName + "];");
                    emitEnd(restParam);
                    decreaseIndent();
                    writeLine();
                    write("}");
                }
            }
            function emitAccessor(node) {
                write(node.kind === 137 ? "get " : "set ");
                emit(node.name, false);
                emitSignatureAndBody(node);
            }
            function shouldEmitAsArrowFunction(node) {
                return node.kind === 164 && languageVersion >= 2;
            }
            function emitDeclarationName(node) {
                if (node.name) {
                    emitNodeWithoutSourceMap(node.name);
                }
                else {
                    write(getGeneratedNameForNode(node));
                }
            }
            function shouldEmitFunctionName(node) {
                if (node.kind === 163) {
                    return !!node.name;
                }
                if (node.kind === 201) {
                    return !!node.name || languageVersion < 2;
                }
            }
            function emitFunctionDeclaration(node) {
                if (ts.nodeIsMissing(node.body)) {
                    return emitOnlyPinnedOrTripleSlashComments(node);
                }
                if (node.kind !== 135 && node.kind !== 134) {
                    emitLeadingComments(node);
                }
                if (!shouldEmitAsArrowFunction(node)) {
                    if (isES6ExportedDeclaration(node)) {
                        write("export ");
                        if (node.flags & 256) {
                            write("default ");
                        }
                    }
                    write("function");
                    if (languageVersion >= 2 && node.asteriskToken) {
                        write("*");
                    }
                    write(" ");
                }
                if (shouldEmitFunctionName(node)) {
                    emitDeclarationName(node);
                }
                emitSignatureAndBody(node);
                if (languageVersion < 2 && node.kind === 201 && node.parent === currentSourceFile && node.name) {
                    emitExportMemberAssignments(node.name);
                }
                if (node.kind !== 135 && node.kind !== 134) {
                    emitTrailingComments(node);
                }
            }
            function emitCaptureThisForNodeIfNecessary(node) {
                if (resolver.getNodeCheckFlags(node) & 4) {
                    writeLine();
                    emitStart(node);
                    write("var _this = this;");
                    emitEnd(node);
                }
            }
            function emitSignatureParameters(node) {
                increaseIndent();
                write("(");
                if (node) {
                    var parameters = node.parameters;
                    var omitCount = languageVersion < 2 && ts.hasRestParameters(node) ? 1 : 0;
                    emitList(parameters, 0, parameters.length - omitCount, false, false);
                }
                write(")");
                decreaseIndent();
            }
            function emitSignatureParametersForArrow(node) {
                if (node.parameters.length === 1 && node.pos === node.parameters[0].pos) {
                    emit(node.parameters[0]);
                    return;
                }
                emitSignatureParameters(node);
            }
            function emitSignatureAndBody(node) {
                var saveTempFlags = tempFlags;
                var saveTempVariables = tempVariables;
                var saveTempParameters = tempParameters;
                tempFlags = 0;
                tempVariables = undefined;
                tempParameters = undefined;
                if (shouldEmitAsArrowFunction(node)) {
                    emitSignatureParametersForArrow(node);
                    write(" =>");
                }
                else {
                    emitSignatureParameters(node);
                }
                if (!node.body) {
                    write(" { }");
                }
                else if (node.body.kind === 180) {
                    emitBlockFunctionBody(node, node.body);
                }
                else {
                    emitExpressionFunctionBody(node, node.body);
                }
                if (!isES6ExportedDeclaration(node)) {
                    emitExportMemberAssignment(node);
                }
                tempFlags = saveTempFlags;
                tempVariables = saveTempVariables;
                tempParameters = saveTempParameters;
            }
            function emitFunctionBodyPreamble(node) {
                emitCaptureThisForNodeIfNecessary(node);
                emitDefaultValueAssignments(node);
                emitRestParameter(node);
            }
            function emitExpressionFunctionBody(node, body) {
                if (languageVersion < 2) {
                    emitDownLevelExpressionFunctionBody(node, body);
                    return;
                }
                write(" ");
                var current = body;
                while (current.kind === 161) {
                    current = current.expression;
                }
                emitParenthesizedIf(body, current.kind === 155);
            }
            function emitDownLevelExpressionFunctionBody(node, body) {
                write(" {");
                scopeEmitStart(node);
                increaseIndent();
                var outPos = writer.getTextPos();
                emitDetachedComments(node.body);
                emitFunctionBodyPreamble(node);
                var preambleEmitted = writer.getTextPos() !== outPos;
                decreaseIndent();
                if (!preambleEmitted && nodeStartPositionsAreOnSameLine(node, body)) {
                    write(" ");
                    emitStart(body);
                    write("return ");
                    emit(body);
                    emitEnd(body);
                    write(";");
                    emitTempDeclarations(false);
                    write(" ");
                }
                else {
                    increaseIndent();
                    writeLine();
                    emitLeadingComments(node.body);
                    write("return ");
                    emit(body);
                    write(";");
                    emitTrailingComments(node.body);
                    emitTempDeclarations(true);
                    decreaseIndent();
                    writeLine();
                }
                emitStart(node.body);
                write("}");
                emitEnd(node.body);
                scopeEmitEnd();
            }
            function emitBlockFunctionBody(node, body) {
                write(" {");
                scopeEmitStart(node);
                var initialTextPos = writer.getTextPos();
                increaseIndent();
                emitDetachedComments(body.statements);
                var startIndex = emitDirectivePrologues(body.statements, true);
                emitFunctionBodyPreamble(node);
                decreaseIndent();
                var preambleEmitted = writer.getTextPos() !== initialTextPos;
                if (!preambleEmitted && nodeEndIsOnSameLineAsNodeStart(body, body)) {
                    for (var _a = 0, _b = body.statements; _a < _b.length; _a++) {
                        var statement = _b[_a];
                        write(" ");
                        emit(statement);
                    }
                    emitTempDeclarations(false);
                    write(" ");
                    emitLeadingCommentsOfPosition(body.statements.end);
                }
                else {
                    increaseIndent();
                    emitLinesStartingAt(body.statements, startIndex);
                    emitTempDeclarations(true);
                    writeLine();
                    emitLeadingCommentsOfPosition(body.statements.end);
                    decreaseIndent();
                }
                emitToken(15, body.statements.end);
                scopeEmitEnd();
            }
            function findInitialSuperCall(ctor) {
                if (ctor.body) {
                    var statement = ctor.body.statements[0];
                    if (statement && statement.kind === 183) {
                        var expr = statement.expression;
                        if (expr && expr.kind === 158) {
                            var func = expr.expression;
                            if (func && func.kind === 91) {
                                return statement;
                            }
                        }
                    }
                }
            }
            function emitParameterPropertyAssignments(node) {
                ts.forEach(node.parameters, function (param) {
                    if (param.flags & 112) {
                        writeLine();
                        emitStart(param);
                        emitStart(param.name);
                        write("this.");
                        emitNodeWithoutSourceMap(param.name);
                        emitEnd(param.name);
                        write(" = ");
                        emit(param.name);
                        write(";");
                        emitEnd(param);
                    }
                });
            }
            function emitMemberAccessForPropertyName(memberName) {
                if (memberName.kind === 8 || memberName.kind === 7) {
                    write("[");
                    emitNodeWithoutSourceMap(memberName);
                    write("]");
                }
                else if (memberName.kind === 128) {
                    emitComputedPropertyName(memberName);
                }
                else {
                    write(".");
                    emitNodeWithoutSourceMap(memberName);
                }
            }
            function getInitializedProperties(node, isStatic) {
                var properties = [];
                for (var _a = 0, _b = node.members; _a < _b.length; _a++) {
                    var member = _b[_a];
                    if (member.kind === 133 && isStatic === ((member.flags & 128) !== 0) && member.initializer) {
                        properties.push(member);
                    }
                }
                return properties;
            }
            function emitPropertyDeclarations(node, properties) {
                for (var _a = 0; _a < properties.length; _a++) {
                    var property = properties[_a];
                    emitPropertyDeclaration(node, property);
                }
            }
            function emitPropertyDeclaration(node, property, receiver, isExpression) {
                writeLine();
                emitLeadingComments(property);
                emitStart(property);
                emitStart(property.name);
                if (receiver) {
                    emit(receiver);
                }
                else {
                    if (property.flags & 128) {
                        emitDeclarationName(node);
                    }
                    else {
                        write("this");
                    }
                }
                emitMemberAccessForPropertyName(property.name);
                emitEnd(property.name);
                write(" = ");
                emit(property.initializer);
                if (!isExpression) {
                    write(";");
                }
                emitEnd(property);
                emitTrailingComments(property);
            }
            function emitMemberFunctionsForES5AndLower(node) {
                ts.forEach(node.members, function (member) {
                    if (member.kind === 179) {
                        writeLine();
                        write(";");
                    }
                    else if (member.kind === 135 || node.kind === 134) {
                        if (!member.body) {
                            return emitOnlyPinnedOrTripleSlashComments(member);
                        }
                        writeLine();
                        emitLeadingComments(member);
                        emitStart(member);
                        emitStart(member.name);
                        emitClassMemberPrefix(node, member);
                        emitMemberAccessForPropertyName(member.name);
                        emitEnd(member.name);
                        write(" = ");
                        emitStart(member);
                        emitFunctionDeclaration(member);
                        emitEnd(member);
                        emitEnd(member);
                        write(";");
                        emitTrailingComments(member);
                    }
                    else if (member.kind === 137 || member.kind === 138) {
                        var accessors = ts.getAllAccessorDeclarations(node.members, member);
                        if (member === accessors.firstAccessor) {
                            writeLine();
                            emitStart(member);
                            write("Object.defineProperty(");
                            emitStart(member.name);
                            emitClassMemberPrefix(node, member);
                            write(", ");
                            emitExpressionForPropertyName(member.name);
                            emitEnd(member.name);
                            write(", {");
                            increaseIndent();
                            if (accessors.getAccessor) {
                                writeLine();
                                emitLeadingComments(accessors.getAccessor);
                                write("get: ");
                                emitStart(accessors.getAccessor);
                                write("function ");
                                emitSignatureAndBody(accessors.getAccessor);
                                emitEnd(accessors.getAccessor);
                                emitTrailingComments(accessors.getAccessor);
                                write(",");
                            }
                            if (accessors.setAccessor) {
                                writeLine();
                                emitLeadingComments(accessors.setAccessor);
                                write("set: ");
                                emitStart(accessors.setAccessor);
                                write("function ");
                                emitSignatureAndBody(accessors.setAccessor);
                                emitEnd(accessors.setAccessor);
                                emitTrailingComments(accessors.setAccessor);
                                write(",");
                            }
                            writeLine();
                            write("enumerable: true,");
                            writeLine();
                            write("configurable: true");
                            decreaseIndent();
                            writeLine();
                            write("});");
                            emitEnd(member);
                        }
                    }
                });
            }
            function emitMemberFunctionsForES6AndHigher(node) {
                for (var _a = 0, _b = node.members; _a < _b.length; _a++) {
                    var member = _b[_a];
                    if ((member.kind === 135 || node.kind === 134) && !member.body) {
                        emitOnlyPinnedOrTripleSlashComments(member);
                    }
                    else if (member.kind === 135 ||
                        member.kind === 137 ||
                        member.kind === 138) {
                        writeLine();
                        emitLeadingComments(member);
                        emitStart(member);
                        if (member.flags & 128) {
                            write("static ");
                        }
                        if (member.kind === 137) {
                            write("get ");
                        }
                        else if (member.kind === 138) {
                            write("set ");
                        }
                        if (member.asteriskToken) {
                            write("*");
                        }
                        emit(member.name);
                        emitSignatureAndBody(member);
                        emitEnd(member);
                        emitTrailingComments(member);
                    }
                    else if (member.kind === 179) {
                        writeLine();
                        write(";");
                    }
                }
            }
            function emitConstructor(node, baseTypeElement) {
                var saveTempFlags = tempFlags;
                var saveTempVariables = tempVariables;
                var saveTempParameters = tempParameters;
                tempFlags = 0;
                tempVariables = undefined;
                tempParameters = undefined;
                emitConstructorWorker(node, baseTypeElement);
                tempFlags = saveTempFlags;
                tempVariables = saveTempVariables;
                tempParameters = saveTempParameters;
            }
            function emitConstructorWorker(node, baseTypeElement) {
                var hasInstancePropertyWithInitializer = false;
                ts.forEach(node.members, function (member) {
                    if (member.kind === 136 && !member.body) {
                        emitOnlyPinnedOrTripleSlashComments(member);
                    }
                    if (member.kind === 133 && member.initializer && (member.flags & 128) === 0) {
                        hasInstancePropertyWithInitializer = true;
                    }
                });
                var ctor = ts.getFirstConstructorWithBody(node);
                if (languageVersion >= 2 && !ctor && !hasInstancePropertyWithInitializer) {
                    return;
                }
                if (ctor) {
                    emitLeadingComments(ctor);
                }
                emitStart(ctor || node);
                if (languageVersion < 2) {
                    write("function ");
                    emitDeclarationName(node);
                    emitSignatureParameters(ctor);
                }
                else {
                    write("constructor");
                    if (ctor) {
                        emitSignatureParameters(ctor);
                    }
                    else {
                        if (baseTypeElement) {
                            write("(...args)");
                        }
                        else {
                            write("()");
                        }
                    }
                }
                write(" {");
                scopeEmitStart(node, "constructor");
                increaseIndent();
                if (ctor) {
                    emitDetachedComments(ctor.body.statements);
                }
                emitCaptureThisForNodeIfNecessary(node);
                if (ctor) {
                    emitDefaultValueAssignments(ctor);
                    emitRestParameter(ctor);
                    if (baseTypeElement) {
                        var superCall = findInitialSuperCall(ctor);
                        if (superCall) {
                            writeLine();
                            emit(superCall);
                        }
                    }
                    emitParameterPropertyAssignments(ctor);
                }
                else {
                    if (baseTypeElement) {
                        writeLine();
                        emitStart(baseTypeElement);
                        if (languageVersion < 2) {
                            write("_super.apply(this, arguments);");
                        }
                        else {
                            write("super(...args);");
                        }
                        emitEnd(baseTypeElement);
                    }
                }
                emitPropertyDeclarations(node, getInitializedProperties(node, false));
                if (ctor) {
                    var statements = ctor.body.statements;
                    if (superCall) {
                        statements = statements.slice(1);
                    }
                    emitLines(statements);
                }
                emitTempDeclarations(true);
                writeLine();
                if (ctor) {
                    emitLeadingCommentsOfPosition(ctor.body.statements.end);
                }
                decreaseIndent();
                emitToken(15, ctor ? ctor.body.statements.end : node.members.end);
                scopeEmitEnd();
                emitEnd(ctor || node);
                if (ctor) {
                    emitTrailingComments(ctor);
                }
            }
            function emitClassExpression(node) {
                return emitClassLikeDeclaration(node);
            }
            function emitClassDeclaration(node) {
                return emitClassLikeDeclaration(node);
            }
            function emitClassLikeDeclaration(node) {
                if (languageVersion < 2) {
                    emitClassLikeDeclarationBelowES6(node);
                }
                else {
                    emitClassLikeDeclarationForES6AndHigher(node);
                }
            }
            function emitClassLikeDeclarationForES6AndHigher(node) {
                var thisNodeIsDecorated = ts.nodeIsDecorated(node);
                if (node.kind === 202) {
                    if (thisNodeIsDecorated) {
                        if (isES6ExportedDeclaration(node) && !(node.flags & 256)) {
                            write("export ");
                        }
                        write("let ");
                        emitDeclarationName(node);
                        write(" = ");
                    }
                    else if (isES6ExportedDeclaration(node)) {
                        write("export ");
                        if (node.flags & 256) {
                            write("default ");
                        }
                    }
                }
                var staticProperties = getInitializedProperties(node, true);
                var isClassExpressionWithStaticProperties = staticProperties.length > 0 && node.kind === 175;
                var tempVariable;
                if (isClassExpressionWithStaticProperties) {
                    tempVariable = createAndRecordTempVariable(0);
                    write("(");
                    increaseIndent();
                    emit(tempVariable);
                    write(" = ");
                }
                write("class");
                if ((node.name || !(node.flags & 256)) && !thisNodeIsDecorated) {
                    write(" ");
                    emitDeclarationName(node);
                }
                var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
                if (baseTypeNode) {
                    write(" extends ");
                    emit(baseTypeNode.expression);
                }
                write(" {");
                increaseIndent();
                scopeEmitStart(node);
                writeLine();
                emitConstructor(node, baseTypeNode);
                emitMemberFunctionsForES6AndHigher(node);
                decreaseIndent();
                writeLine();
                emitToken(15, node.members.end);
                scopeEmitEnd();
                if (thisNodeIsDecorated) {
                    write(";");
                }
                if (isClassExpressionWithStaticProperties) {
                    for (var _a = 0; _a < staticProperties.length; _a++) {
                        var property = staticProperties[_a];
                        write(",");
                        writeLine();
                        emitPropertyDeclaration(node, property, tempVariable, true);
                    }
                    write(",");
                    writeLine();
                    emit(tempVariable);
                    decreaseIndent();
                    write(")");
                }
                else {
                    writeLine();
                    emitPropertyDeclarations(node, staticProperties);
                    emitDecoratorsOfClass(node);
                }
                if (!isES6ExportedDeclaration(node) && (node.flags & 1)) {
                    writeLine();
                    emitStart(node);
                    emitModuleMemberName(node);
                    write(" = ");
                    emitDeclarationName(node);
                    emitEnd(node);
                    write(";");
                }
                else if (isES6ExportedDeclaration(node) && (node.flags & 256) && thisNodeIsDecorated) {
                    writeLine();
                    write("export default ");
                    emitDeclarationName(node);
                    write(";");
                }
            }
            function emitClassLikeDeclarationBelowES6(node) {
                if (node.kind === 202) {
                    if (!shouldHoistDeclarationInSystemJsModule(node)) {
                        write("var ");
                    }
                    emitDeclarationName(node);
                    write(" = ");
                }
                write("(function (");
                var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
                if (baseTypeNode) {
                    write("_super");
                }
                write(") {");
                var saveTempFlags = tempFlags;
                var saveTempVariables = tempVariables;
                var saveTempParameters = tempParameters;
                var saveComputedPropertyNamesToGeneratedNames = computedPropertyNamesToGeneratedNames;
                tempFlags = 0;
                tempVariables = undefined;
                tempParameters = undefined;
                computedPropertyNamesToGeneratedNames = undefined;
                increaseIndent();
                scopeEmitStart(node);
                if (baseTypeNode) {
                    writeLine();
                    emitStart(baseTypeNode);
                    write("__extends(");
                    emitDeclarationName(node);
                    write(", _super);");
                    emitEnd(baseTypeNode);
                }
                writeLine();
                emitConstructor(node, baseTypeNode);
                emitMemberFunctionsForES5AndLower(node);
                emitPropertyDeclarations(node, getInitializedProperties(node, true));
                writeLine();
                emitDecoratorsOfClass(node);
                writeLine();
                emitToken(15, node.members.end, function () {
                    write("return ");
                    emitDeclarationName(node);
                });
                write(";");
                emitTempDeclarations(true);
                tempFlags = saveTempFlags;
                tempVariables = saveTempVariables;
                tempParameters = saveTempParameters;
                computedPropertyNamesToGeneratedNames = saveComputedPropertyNamesToGeneratedNames;
                decreaseIndent();
                writeLine();
                emitToken(15, node.members.end);
                scopeEmitEnd();
                emitStart(node);
                write(")(");
                if (baseTypeNode) {
                    emit(baseTypeNode.expression);
                }
                write(")");
                if (node.kind === 202) {
                    write(";");
                }
                emitEnd(node);
                if (node.kind === 202) {
                    emitExportMemberAssignment(node);
                }
                if (languageVersion < 2 && node.parent === currentSourceFile && node.name) {
                    emitExportMemberAssignments(node.name);
                }
            }
            function emitClassMemberPrefix(node, member) {
                emitDeclarationName(node);
                if (!(member.flags & 128)) {
                    write(".prototype");
                }
            }
            function emitDecoratorsOfClass(node) {
                emitDecoratorsOfMembers(node, 0);
                emitDecoratorsOfMembers(node, 128);
                emitDecoratorsOfConstructor(node);
            }
            function emitDecoratorsOfConstructor(node) {
                var decorators = node.decorators;
                var constructor = ts.getFirstConstructorWithBody(node);
                var hasDecoratedParameters = constructor && ts.forEach(constructor.parameters, ts.nodeIsDecorated);
                if (!decorators && !hasDecoratedParameters) {
                    return;
                }
                writeLine();
                emitStart(node);
                emitDeclarationName(node);
                write(" = __decorate([");
                increaseIndent();
                writeLine();
                var decoratorCount = decorators ? decorators.length : 0;
                var argumentsWritten = emitList(decorators, 0, decoratorCount, true, false, false, true, function (decorator) {
                    emitStart(decorator);
                    emit(decorator.expression);
                    emitEnd(decorator);
                });
                argumentsWritten += emitDecoratorsOfParameters(constructor, argumentsWritten > 0);
                emitSerializedTypeMetadata(node, argumentsWritten >= 0);
                decreaseIndent();
                writeLine();
                write("], ");
                emitDeclarationName(node);
                write(");");
                emitEnd(node);
                writeLine();
            }
            function emitDecoratorsOfMembers(node, staticFlag) {
                for (var _a = 0, _b = node.members; _a < _b.length; _a++) {
                    var member = _b[_a];
                    if ((member.flags & 128) !== staticFlag) {
                        continue;
                    }
                    if (!ts.nodeCanBeDecorated(member)) {
                        continue;
                    }
                    if (!ts.nodeOrChildIsDecorated(member)) {
                        continue;
                    }
                    var decorators = void 0;
                    var functionLikeMember = void 0;
                    if (ts.isAccessor(member)) {
                        var accessors = ts.getAllAccessorDeclarations(node.members, member);
                        if (member !== accessors.firstAccessor) {
                            continue;
                        }
                        decorators = accessors.firstAccessor.decorators;
                        if (!decorators && accessors.secondAccessor) {
                            decorators = accessors.secondAccessor.decorators;
                        }
                        functionLikeMember = accessors.setAccessor;
                    }
                    else {
                        decorators = member.decorators;
                        if (member.kind === 135) {
                            functionLikeMember = member;
                        }
                    }
                    writeLine();
                    emitStart(member);
                    if (member.kind !== 133) {
                        write("Object.defineProperty(");
                        emitStart(member.name);
                        emitClassMemberPrefix(node, member);
                        write(", ");
                        emitExpressionForPropertyName(member.name);
                        emitEnd(member.name);
                        write(",");
                        increaseIndent();
                        writeLine();
                    }
                    write("__decorate([");
                    increaseIndent();
                    writeLine();
                    var decoratorCount = decorators ? decorators.length : 0;
                    var argumentsWritten = emitList(decorators, 0, decoratorCount, true, false, false, true, function (decorator) {
                        emitStart(decorator);
                        emit(decorator.expression);
                        emitEnd(decorator);
                    });
                    argumentsWritten += emitDecoratorsOfParameters(functionLikeMember, argumentsWritten > 0);
                    emitSerializedTypeMetadata(member, argumentsWritten > 0);
                    decreaseIndent();
                    writeLine();
                    write("], ");
                    emitStart(member.name);
                    emitClassMemberPrefix(node, member);
                    write(", ");
                    emitExpressionForPropertyName(member.name);
                    emitEnd(member.name);
                    if (member.kind !== 133) {
                        write(", Object.getOwnPropertyDescriptor(");
                        emitStart(member.name);
                        emitClassMemberPrefix(node, member);
                        write(", ");
                        emitExpressionForPropertyName(member.name);
                        emitEnd(member.name);
                        write("))");
                        decreaseIndent();
                    }
                    write(");");
                    emitEnd(member);
                    writeLine();
                }
            }
            function emitDecoratorsOfParameters(node, leadingComma) {
                var argumentsWritten = 0;
                if (node) {
                    var parameterIndex = 0;
                    for (var _a = 0, _b = node.parameters; _a < _b.length; _a++) {
                        var parameter = _b[_a];
                        if (ts.nodeIsDecorated(parameter)) {
                            var decorators = parameter.decorators;
                            argumentsWritten += emitList(decorators, 0, decorators.length, true, false, leadingComma, true, function (decorator) {
                                emitStart(decorator);
                                write("__param(" + parameterIndex + ", ");
                                emit(decorator.expression);
                                write(")");
                                emitEnd(decorator);
                            });
                            leadingComma = true;
                        }
                        ++parameterIndex;
                    }
                }
                return argumentsWritten;
            }
            function shouldEmitTypeMetadata(node) {
                switch (node.kind) {
                    case 135:
                    case 137:
                    case 138:
                    case 133:
                        return true;
                }
                return false;
            }
            function shouldEmitReturnTypeMetadata(node) {
                switch (node.kind) {
                    case 135:
                        return true;
                }
                return false;
            }
            function shouldEmitParamTypesMetadata(node) {
                switch (node.kind) {
                    case 202:
                    case 135:
                    case 138:
                        return true;
                }
                return false;
            }
            function emitSerializedTypeMetadata(node, writeComma) {
                var argumentsWritten = 0;
                if (compilerOptions.emitDecoratorMetadata) {
                    if (shouldEmitTypeMetadata(node)) {
                        var serializedType = resolver.serializeTypeOfNode(node, getGeneratedNameForNode);
                        if (serializedType) {
                            if (writeComma) {
                                write(", ");
                            }
                            writeLine();
                            write("__metadata('design:type', ");
                            emitSerializedType(node, serializedType);
                            write(")");
                            argumentsWritten++;
                        }
                    }
                    if (shouldEmitParamTypesMetadata(node)) {
                        var serializedTypes = resolver.serializeParameterTypesOfNode(node, getGeneratedNameForNode);
                        if (serializedTypes) {
                            if (writeComma || argumentsWritten) {
                                write(", ");
                            }
                            writeLine();
                            write("__metadata('design:paramtypes', [");
                            for (var i = 0; i < serializedTypes.length; ++i) {
                                if (i > 0) {
                                    write(", ");
                                }
                                emitSerializedType(node, serializedTypes[i]);
                            }
                            write("])");
                            argumentsWritten++;
                        }
                    }
                    if (shouldEmitReturnTypeMetadata(node)) {
                        var serializedType = resolver.serializeReturnTypeOfNode(node, getGeneratedNameForNode);
                        if (serializedType) {
                            if (writeComma || argumentsWritten) {
                                write(", ");
                            }
                            writeLine();
                            write("__metadata('design:returntype', ");
                            emitSerializedType(node, serializedType);
                            write(")");
                            argumentsWritten++;
                        }
                    }
                }
                return argumentsWritten;
            }
            function serializeTypeNameSegment(location, path, index) {
                switch (index) {
                    case 0:
                        return "typeof " + path[index] + " !== 'undefined' && " + path[index];
                    case 1:
                        return serializeTypeNameSegment(location, path, index - 1) + "." + path[index];
                    default:
                        var temp = createAndRecordTempVariable(0).text;
                        return "(" + temp + " = " + serializeTypeNameSegment(location, path, index - 1) + ") && " + temp + "." + path[index];
                }
            }
            function emitSerializedType(location, name) {
                if (typeof name === "string") {
                    write(name);
                    return;
                }
                else {
                    ts.Debug.assert(name.length > 0, "Invalid serialized type name");
                    write("(" + serializeTypeNameSegment(location, name, name.length - 1) + ") || Object");
                }
            }
            function emitInterfaceDeclaration(node) {
                emitOnlyPinnedOrTripleSlashComments(node);
            }
            function shouldEmitEnumDeclaration(node) {
                var isConstEnum = ts.isConst(node);
                return !isConstEnum || compilerOptions.preserveConstEnums || compilerOptions.separateCompilation;
            }
            function emitEnumDeclaration(node) {
                if (!shouldEmitEnumDeclaration(node)) {
                    return;
                }
                if (!shouldHoistDeclarationInSystemJsModule(node)) {
                    if (!(node.flags & 1) || isES6ExportedDeclaration(node)) {
                        emitStart(node);
                        if (isES6ExportedDeclaration(node)) {
                            write("export ");
                        }
                        write("var ");
                        emit(node.name);
                        emitEnd(node);
                        write(";");
                    }
                }
                writeLine();
                emitStart(node);
                write("(function (");
                emitStart(node.name);
                write(getGeneratedNameForNode(node));
                emitEnd(node.name);
                write(") {");
                increaseIndent();
                scopeEmitStart(node);
                emitLines(node.members);
                decreaseIndent();
                writeLine();
                emitToken(15, node.members.end);
                scopeEmitEnd();
                write(")(");
                emitModuleMemberName(node);
                write(" || (");
                emitModuleMemberName(node);
                write(" = {}));");
                emitEnd(node);
                if (!isES6ExportedDeclaration(node) && node.flags & 1 && !shouldHoistDeclarationInSystemJsModule(node)) {
                    writeLine();
                    emitStart(node);
                    write("var ");
                    emit(node.name);
                    write(" = ");
                    emitModuleMemberName(node);
                    emitEnd(node);
                    write(";");
                }
                if (languageVersion < 2 && node.parent === currentSourceFile) {
                    if (compilerOptions.module === 4 && (node.flags & 1)) {
                        writeLine();
                        write(exportFunctionForFile + "(\"");
                        emitDeclarationName(node);
                        write("\", ");
                        emitDeclarationName(node);
                        write(")");
                    }
                    emitExportMemberAssignments(node.name);
                }
            }
            function emitEnumMember(node) {
                var enumParent = node.parent;
                emitStart(node);
                write(getGeneratedNameForNode(enumParent));
                write("[");
                write(getGeneratedNameForNode(enumParent));
                write("[");
                emitExpressionForPropertyName(node.name);
                write("] = ");
                writeEnumMemberDeclarationValue(node);
                write("] = ");
                emitExpressionForPropertyName(node.name);
                emitEnd(node);
                write(";");
            }
            function writeEnumMemberDeclarationValue(member) {
                var value = resolver.getConstantValue(member);
                if (value !== undefined) {
                    write(value.toString());
                    return;
                }
                else if (member.initializer) {
                    emit(member.initializer);
                }
                else {
                    write("undefined");
                }
            }
            function getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration) {
                if (moduleDeclaration.body.kind === 206) {
                    var recursiveInnerModule = getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration.body);
                    return recursiveInnerModule || moduleDeclaration.body;
                }
            }
            function shouldEmitModuleDeclaration(node) {
                return ts.isInstantiatedModule(node, compilerOptions.preserveConstEnums || compilerOptions.separateCompilation);
            }
            function isModuleMergedWithES6Class(node) {
                return languageVersion === 2 && !!(resolver.getNodeCheckFlags(node) & 2048);
            }
            function emitModuleDeclaration(node) {
                var shouldEmit = shouldEmitModuleDeclaration(node);
                if (!shouldEmit) {
                    return emitOnlyPinnedOrTripleSlashComments(node);
                }
                var hoistedInDeclarationScope = shouldHoistDeclarationInSystemJsModule(node);
                var emitVarForModule = !hoistedInDeclarationScope && !isModuleMergedWithES6Class(node);
                if (emitVarForModule) {
                    emitStart(node);
                    if (isES6ExportedDeclaration(node)) {
                        write("export ");
                    }
                    write("var ");
                    emit(node.name);
                    write(";");
                    emitEnd(node);
                    writeLine();
                }
                emitStart(node);
                write("(function (");
                emitStart(node.name);
                write(getGeneratedNameForNode(node));
                emitEnd(node.name);
                write(") ");
                if (node.body.kind === 207) {
                    var saveTempFlags = tempFlags;
                    var saveTempVariables = tempVariables;
                    tempFlags = 0;
                    tempVariables = undefined;
                    emit(node.body);
                    tempFlags = saveTempFlags;
                    tempVariables = saveTempVariables;
                }
                else {
                    write("{");
                    increaseIndent();
                    scopeEmitStart(node);
                    emitCaptureThisForNodeIfNecessary(node);
                    writeLine();
                    emit(node.body);
                    decreaseIndent();
                    writeLine();
                    var moduleBlock = getInnerMostModuleDeclarationFromDottedModule(node).body;
                    emitToken(15, moduleBlock.statements.end);
                    scopeEmitEnd();
                }
                write(")(");
                if ((node.flags & 1) && !isES6ExportedDeclaration(node)) {
                    emit(node.name);
                    write(" = ");
                }
                emitModuleMemberName(node);
                write(" || (");
                emitModuleMemberName(node);
                write(" = {}));");
                emitEnd(node);
                if (!isES6ExportedDeclaration(node) && node.name.kind === 65 && node.parent === currentSourceFile) {
                    if (compilerOptions.module === 4 && (node.flags & 1)) {
                        writeLine();
                        write(exportFunctionForFile + "(\"");
                        emitDeclarationName(node);
                        write("\", ");
                        emitDeclarationName(node);
                        write(")");
                    }
                    emitExportMemberAssignments(node.name);
                }
            }
            function emitRequire(moduleName) {
                if (moduleName.kind === 8) {
                    write("require(");
                    emitStart(moduleName);
                    emitLiteral(moduleName);
                    emitEnd(moduleName);
                    emitToken(17, moduleName.end);
                }
                else {
                    write("require()");
                }
            }
            function getNamespaceDeclarationNode(node) {
                if (node.kind === 209) {
                    return node;
                }
                var importClause = node.importClause;
                if (importClause && importClause.namedBindings && importClause.namedBindings.kind === 212) {
                    return importClause.namedBindings;
                }
            }
            function isDefaultImport(node) {
                return node.kind === 210 && node.importClause && !!node.importClause.name;
            }
            function emitExportImportAssignments(node) {
                if (ts.isAliasSymbolDeclaration(node) && resolver.isValueAliasDeclaration(node)) {
                    emitExportMemberAssignments(node.name);
                }
                ts.forEachChild(node, emitExportImportAssignments);
            }
            function emitImportDeclaration(node) {
                if (languageVersion < 2) {
                    return emitExternalImportDeclaration(node);
                }
                if (node.importClause) {
                    var shouldEmitDefaultBindings = resolver.isReferencedAliasDeclaration(node.importClause);
                    var shouldEmitNamedBindings = node.importClause.namedBindings && resolver.isReferencedAliasDeclaration(node.importClause.namedBindings, true);
                    if (shouldEmitDefaultBindings || shouldEmitNamedBindings) {
                        write("import ");
                        emitStart(node.importClause);
                        if (shouldEmitDefaultBindings) {
                            emit(node.importClause.name);
                            if (shouldEmitNamedBindings) {
                                write(", ");
                            }
                        }
                        if (shouldEmitNamedBindings) {
                            emitLeadingComments(node.importClause.namedBindings);
                            emitStart(node.importClause.namedBindings);
                            if (node.importClause.namedBindings.kind === 212) {
                                write("* as ");
                                emit(node.importClause.namedBindings.name);
                            }
                            else {
                                write("{ ");
                                emitExportOrImportSpecifierList(node.importClause.namedBindings.elements, resolver.isReferencedAliasDeclaration);
                                write(" }");
                            }
                            emitEnd(node.importClause.namedBindings);
                            emitTrailingComments(node.importClause.namedBindings);
                        }
                        emitEnd(node.importClause);
                        write(" from ");
                        emit(node.moduleSpecifier);
                        write(";");
                    }
                }
                else {
                    write("import ");
                    emit(node.moduleSpecifier);
                    write(";");
                }
            }
            function emitExternalImportDeclaration(node) {
                if (ts.contains(externalImports, node)) {
                    var isExportedImport = node.kind === 209 && (node.flags & 1) !== 0;
                    var namespaceDeclaration = getNamespaceDeclarationNode(node);
                    if (compilerOptions.module !== 2) {
                        emitLeadingComments(node);
                        emitStart(node);
                        if (namespaceDeclaration && !isDefaultImport(node)) {
                            if (!isExportedImport)
                                write("var ");
                            emitModuleMemberName(namespaceDeclaration);
                            write(" = ");
                        }
                        else {
                            var isNakedImport = 210 && !node.importClause;
                            if (!isNakedImport) {
                                write("var ");
                                write(getGeneratedNameForNode(node));
                                write(" = ");
                            }
                        }
                        emitRequire(ts.getExternalModuleName(node));
                        if (namespaceDeclaration && isDefaultImport(node)) {
                            write(", ");
                            emitModuleMemberName(namespaceDeclaration);
                            write(" = ");
                            write(getGeneratedNameForNode(node));
                        }
                        write(";");
                        emitEnd(node);
                        emitExportImportAssignments(node);
                        emitTrailingComments(node);
                    }
                    else {
                        if (isExportedImport) {
                            emitModuleMemberName(namespaceDeclaration);
                            write(" = ");
                            emit(namespaceDeclaration.name);
                            write(";");
                        }
                        else if (namespaceDeclaration && isDefaultImport(node)) {
                            write("var ");
                            emitModuleMemberName(namespaceDeclaration);
                            write(" = ");
                            write(getGeneratedNameForNode(node));
                            write(";");
                        }
                        emitExportImportAssignments(node);
                    }
                }
            }
            function emitImportEqualsDeclaration(node) {
                if (ts.isExternalModuleImportEqualsDeclaration(node)) {
                    emitExternalImportDeclaration(node);
                    return;
                }
                if (resolver.isReferencedAliasDeclaration(node) ||
                    (!ts.isExternalModule(currentSourceFile) && resolver.isTopLevelValueImportEqualsWithEntityName(node))) {
                    emitLeadingComments(node);
                    emitStart(node);
                    if (isES6ExportedDeclaration(node)) {
                        write("export ");
                        write("var ");
                    }
                    else if (!(node.flags & 1)) {
                        write("var ");
                    }
                    emitModuleMemberName(node);
                    write(" = ");
                    emit(node.moduleReference);
                    write(";");
                    emitEnd(node);
                    emitExportImportAssignments(node);
                    emitTrailingComments(node);
                }
            }
            function emitExportDeclaration(node) {
                ts.Debug.assert(compilerOptions.module !== 4);
                if (languageVersion < 2) {
                    if (node.moduleSpecifier && (!node.exportClause || resolver.isValueAliasDeclaration(node))) {
                        emitStart(node);
                        var generatedName = getGeneratedNameForNode(node);
                        if (node.exportClause) {
                            if (compilerOptions.module !== 2) {
                                write("var ");
                                write(generatedName);
                                write(" = ");
                                emitRequire(ts.getExternalModuleName(node));
                                write(";");
                            }
                            for (var _a = 0, _b = node.exportClause.elements; _a < _b.length; _a++) {
                                var specifier = _b[_a];
                                if (resolver.isValueAliasDeclaration(specifier)) {
                                    writeLine();
                                    emitStart(specifier);
                                    emitContainingModuleName(specifier);
                                    write(".");
                                    emitNodeWithoutSourceMap(specifier.name);
                                    write(" = ");
                                    write(generatedName);
                                    write(".");
                                    emitNodeWithoutSourceMap(specifier.propertyName || specifier.name);
                                    write(";");
                                    emitEnd(specifier);
                                }
                            }
                        }
                        else {
                            writeLine();
                            write("__export(");
                            if (compilerOptions.module !== 2) {
                                emitRequire(ts.getExternalModuleName(node));
                            }
                            else {
                                write(generatedName);
                            }
                            write(");");
                        }
                        emitEnd(node);
                    }
                }
                else {
                    if (!node.exportClause || resolver.isValueAliasDeclaration(node)) {
                        emitStart(node);
                        write("export ");
                        if (node.exportClause) {
                            write("{ ");
                            emitExportOrImportSpecifierList(node.exportClause.elements, resolver.isValueAliasDeclaration);
                            write(" }");
                        }
                        else {
                            write("*");
                        }
                        if (node.moduleSpecifier) {
                            write(" from ");
                            emitNodeWithoutSourceMap(node.moduleSpecifier);
                        }
                        write(";");
                        emitEnd(node);
                    }
                }
            }
            function emitExportOrImportSpecifierList(specifiers, shouldEmit) {
                ts.Debug.assert(languageVersion >= 2);
                var needsComma = false;
                for (var _a = 0; _a < specifiers.length; _a++) {
                    var specifier = specifiers[_a];
                    if (shouldEmit(specifier)) {
                        if (needsComma) {
                            write(", ");
                        }
                        emitStart(specifier);
                        if (specifier.propertyName) {
                            emitNodeWithoutSourceMap(specifier.propertyName);
                            write(" as ");
                        }
                        emitNodeWithoutSourceMap(specifier.name);
                        emitEnd(specifier);
                        needsComma = true;
                    }
                }
            }
            function emitExportAssignment(node) {
                if (!node.isExportEquals && resolver.isValueAliasDeclaration(node)) {
                    if (languageVersion >= 2) {
                        writeLine();
                        emitStart(node);
                        write("export default ");
                        var expression = node.expression;
                        emit(expression);
                        if (expression.kind !== 201 &&
                            expression.kind !== 202) {
                            write(";");
                        }
                        emitEnd(node);
                    }
                    else {
                        writeLine();
                        emitStart(node);
                        if (compilerOptions.module === 4) {
                            write(exportFunctionForFile + "(\"default\",");
                            emit(node.expression);
                            write(")");
                        }
                        else {
                            emitContainingModuleName(node);
                            if (languageVersion === 0) {
                                write("[\"default\"] = ");
                            }
                            else {
                                write(".default = ");
                            }
                            emit(node.expression);
                        }
                        write(";");
                        emitEnd(node);
                    }
                }
            }
            function collectExternalModuleInfo(sourceFile) {
                externalImports = [];
                exportSpecifiers = {};
                exportEquals = undefined;
                hasExportStars = false;
                for (var _a = 0, _b = sourceFile.statements; _a < _b.length; _a++) {
                    var node = _b[_a];
                    switch (node.kind) {
                        case 210:
                            if (!node.importClause ||
                                resolver.isReferencedAliasDeclaration(node.importClause, true)) {
                                externalImports.push(node);
                            }
                            break;
                        case 209:
                            if (node.moduleReference.kind === 220 && resolver.isReferencedAliasDeclaration(node)) {
                                externalImports.push(node);
                            }
                            break;
                        case 216:
                            if (node.moduleSpecifier) {
                                if (!node.exportClause) {
                                    externalImports.push(node);
                                    hasExportStars = true;
                                }
                                else if (resolver.isValueAliasDeclaration(node)) {
                                    externalImports.push(node);
                                }
                            }
                            else {
                                for (var _c = 0, _d = node.exportClause.elements; _c < _d.length; _c++) {
                                    var specifier = _d[_c];
                                    var name_20 = (specifier.propertyName || specifier.name).text;
                                    (exportSpecifiers[name_20] || (exportSpecifiers[name_20] = [])).push(specifier);
                                }
                            }
                            break;
                        case 215:
                            if (node.isExportEquals && !exportEquals) {
                                exportEquals = node;
                            }
                            break;
                    }
                }
            }
            function emitExportStarHelper() {
                if (hasExportStars) {
                    writeLine();
                    write("function __export(m) {");
                    increaseIndent();
                    writeLine();
                    write("for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];");
                    decreaseIndent();
                    writeLine();
                    write("}");
                }
            }
            function getLocalNameForExternalImport(importNode) {
                var namespaceDeclaration = getNamespaceDeclarationNode(importNode);
                if (namespaceDeclaration && !isDefaultImport(importNode)) {
                    return ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, namespaceDeclaration.name);
                }
                else {
                    return getGeneratedNameForNode(importNode);
                }
            }
            function getExternalModuleNameText(importNode) {
                var moduleName = ts.getExternalModuleName(importNode);
                if (moduleName.kind === 8) {
                    return getLiteralText(moduleName);
                }
                return undefined;
            }
            function emitVariableDeclarationsForImports() {
                if (externalImports.length === 0) {
                    return;
                }
                writeLine();
                var started = false;
                for (var _a = 0; _a < externalImports.length; _a++) {
                    var importNode = externalImports[_a];
                    var skipNode = importNode.kind === 216 ||
                        (importNode.kind === 210 && !importNode.importClause);
                    if (skipNode) {
                        continue;
                    }
                    if (!started) {
                        write("var ");
                        started = true;
                    }
                    else {
                        write(", ");
                    }
                    write(getLocalNameForExternalImport(importNode));
                }
                if (started) {
                    write(";");
                }
            }
            function emitLocalStorageForExportedNamesIfNecessary(exportedDeclarations) {
                if (!hasExportStars) {
                    return undefined;
                }
                if (!exportedDeclarations && ts.isEmpty(exportSpecifiers)) {
                    var hasExportDeclarationWithExportClause = false;
                    for (var _a = 0; _a < externalImports.length; _a++) {
                        var externalImport = externalImports[_a];
                        if (externalImport.kind === 216 && externalImport.exportClause) {
                            hasExportDeclarationWithExportClause = true;
                            break;
                        }
                    }
                    if (!hasExportDeclarationWithExportClause) {
                        return emitExportStarFunction(undefined);
                    }
                }
                var exportedNamesStorageRef = makeUniqueName("exportedNames");
                writeLine();
                write("var " + exportedNamesStorageRef + " = {");
                increaseIndent();
                var started = false;
                if (exportedDeclarations) {
                    for (var i = 0; i < exportedDeclarations.length; ++i) {
                        writeExportedName(exportedDeclarations[i]);
                    }
                }
                if (exportSpecifiers) {
                    for (var n in exportSpecifiers) {
                        for (var _b = 0, _c = exportSpecifiers[n]; _b < _c.length; _b++) {
                            var specifier = _c[_b];
                            writeExportedName(specifier.name);
                        }
                    }
                }
                for (var _d = 0; _d < externalImports.length; _d++) {
                    var externalImport = externalImports[_d];
                    if (externalImport.kind !== 216) {
                        continue;
                    }
                    var exportDecl = externalImport;
                    if (!exportDecl.exportClause) {
                        continue;
                    }
                    for (var _e = 0, _f = exportDecl.exportClause.elements; _e < _f.length; _e++) {
                        var element = _f[_e];
                        writeExportedName(element.name || element.propertyName);
                    }
                }
                decreaseIndent();
                writeLine();
                write("};");
                return emitExportStarFunction(exportedNamesStorageRef);
                function emitExportStarFunction(localNames) {
                    var exportStarFunction = makeUniqueName("exportStar");
                    writeLine();
                    write("function " + exportStarFunction + "(m) {");
                    increaseIndent();
                    writeLine();
                    write("for(var n in m) {");
                    increaseIndent();
                    writeLine();
                    write("if (n !== \"default\"");
                    if (localNames) {
                        write("&& !" + localNames + ".hasOwnProperty(n)");
                    }
                    write(") " + exportFunctionForFile + "(n, m[n]);");
                    decreaseIndent();
                    writeLine();
                    write("}");
                    decreaseIndent();
                    writeLine();
                    write("}");
                    return exportStarFunction;
                }
                function writeExportedName(node) {
                    if (node.kind !== 65 && node.flags & 256) {
                        return;
                    }
                    if (started) {
                        write(",");
                    }
                    else {
                        started = true;
                    }
                    writeLine();
                    write("'");
                    if (node.kind === 65) {
                        emitNodeWithoutSourceMap(node);
                    }
                    else {
                        emitDeclarationName(node);
                    }
                    write("': true");
                }
            }
            function processTopLevelVariableAndFunctionDeclarations(node) {
                var hoistedVars;
                var hoistedFunctionDeclarations;
                var exportedDeclarations;
                visit(node);
                if (hoistedVars) {
                    writeLine();
                    write("var ");
                    var seen = {};
                    for (var i = 0; i < hoistedVars.length; ++i) {
                        var local = hoistedVars[i];
                        var name_21 = local.kind === 65
                            ? local
                            : local.name;
                        if (name_21) {
                            var text = ts.unescapeIdentifier(name_21.text);
                            if (ts.hasProperty(seen, text)) {
                                continue;
                            }
                            else {
                                seen[text] = text;
                            }
                        }
                        if (i !== 0) {
                            write(", ");
                        }
                        if (local.kind === 202 || local.kind === 206 || local.kind === 205) {
                            emitDeclarationName(local);
                        }
                        else {
                            emit(local);
                        }
                        var flags = ts.getCombinedNodeFlags(local.kind === 65 ? local.parent : local);
                        if (flags & 1) {
                            if (!exportedDeclarations) {
                                exportedDeclarations = [];
                            }
                            exportedDeclarations.push(local);
                        }
                    }
                    write(";");
                }
                if (hoistedFunctionDeclarations) {
                    for (var _a = 0; _a < hoistedFunctionDeclarations.length; _a++) {
                        var f = hoistedFunctionDeclarations[_a];
                        writeLine();
                        emit(f);
                        if (f.flags & 1) {
                            if (!exportedDeclarations) {
                                exportedDeclarations = [];
                            }
                            exportedDeclarations.push(f);
                        }
                    }
                }
                return exportedDeclarations;
                function visit(node) {
                    if (node.flags & 2) {
                        return;
                    }
                    if (node.kind === 201) {
                        if (!hoistedFunctionDeclarations) {
                            hoistedFunctionDeclarations = [];
                        }
                        hoistedFunctionDeclarations.push(node);
                        return;
                    }
                    if (node.kind === 202) {
                        if (!hoistedVars) {
                            hoistedVars = [];
                        }
                        hoistedVars.push(node);
                        return;
                    }
                    if (node.kind === 205) {
                        if (shouldEmitEnumDeclaration(node)) {
                            if (!hoistedVars) {
                                hoistedVars = [];
                            }
                            hoistedVars.push(node);
                        }
                        return;
                    }
                    if (node.kind === 206) {
                        if (shouldEmitModuleDeclaration(node)) {
                            if (!hoistedVars) {
                                hoistedVars = [];
                            }
                            hoistedVars.push(node);
                        }
                        return;
                    }
                    if (node.kind === 199 || node.kind === 153) {
                        if (shouldHoistVariable(node, false)) {
                            var name_22 = node.name;
                            if (name_22.kind === 65) {
                                if (!hoistedVars) {
                                    hoistedVars = [];
                                }
                                hoistedVars.push(name_22);
                            }
                            else {
                                ts.forEachChild(name_22, visit);
                            }
                        }
                        return;
                    }
                    if (ts.isBindingPattern(node)) {
                        ts.forEach(node.elements, visit);
                        return;
                    }
                    if (!ts.isDeclaration(node)) {
                        ts.forEachChild(node, visit);
                    }
                }
            }
            function shouldHoistVariable(node, checkIfSourceFileLevelDecl) {
                if (checkIfSourceFileLevelDecl && !shouldHoistDeclarationInSystemJsModule(node)) {
                    return false;
                }
                return (ts.getCombinedNodeFlags(node) & 12288) === 0 ||
                    ts.getEnclosingBlockScopeContainer(node).kind === 228;
            }
            function isCurrentFileSystemExternalModule() {
                return compilerOptions.module === 4 && ts.isExternalModule(currentSourceFile);
            }
            function emitSystemModuleBody(node, startIndex) {
                emitVariableDeclarationsForImports();
                writeLine();
                var exportedDeclarations = processTopLevelVariableAndFunctionDeclarations(node);
                var exportStarFunction = emitLocalStorageForExportedNamesIfNecessary(exportedDeclarations);
                writeLine();
                write("return {");
                increaseIndent();
                writeLine();
                emitSetters(exportStarFunction);
                writeLine();
                emitExecute(node, startIndex);
                emitTempDeclarations(true);
                decreaseIndent();
                writeLine();
                write("}");
            }
            function emitSetters(exportStarFunction) {
                write("setters:[");
                for (var i = 0; i < externalImports.length; ++i) {
                    if (i !== 0) {
                        write(",");
                    }
                    writeLine();
                    increaseIndent();
                    var importNode = externalImports[i];
                    var importVariableName = getLocalNameForExternalImport(importNode) || "";
                    var parameterName = "_" + importVariableName;
                    write("function (" + parameterName + ") {");
                    switch (importNode.kind) {
                        case 210:
                            if (!importNode.importClause) {
                                break;
                            }
                        case 209:
                            ts.Debug.assert(importVariableName !== "");
                            increaseIndent();
                            writeLine();
                            write(importVariableName + " = " + parameterName + ";");
                            writeLine();
                            var defaultName = importNode.kind === 210
                                ? importNode.importClause.name
                                : importNode.name;
                            if (defaultName) {
                                emitExportMemberAssignments(defaultName);
                                writeLine();
                            }
                            if (importNode.kind === 210 &&
                                importNode.importClause.namedBindings) {
                                var namedBindings = importNode.importClause.namedBindings;
                                if (namedBindings.kind === 212) {
                                    emitExportMemberAssignments(namedBindings.name);
                                    writeLine();
                                }
                                else {
                                    for (var _a = 0, _b = namedBindings.elements; _a < _b.length; _a++) {
                                        var element = _b[_a];
                                        emitExportMemberAssignments(element.name || element.propertyName);
                                        writeLine();
                                    }
                                }
                            }
                            decreaseIndent();
                            break;
                        case 216:
                            ts.Debug.assert(importVariableName !== "");
                            increaseIndent();
                            if (importNode.exportClause) {
                                for (var _c = 0, _d = importNode.exportClause.elements; _c < _d.length; _c++) {
                                    var e = _d[_c];
                                    writeLine();
                                    write(exportFunctionForFile + "(\"");
                                    emitNodeWithoutSourceMap(e.name);
                                    write("\", " + parameterName + "[\"");
                                    emitNodeWithoutSourceMap(e.propertyName || e.name);
                                    write("\"]);");
                                }
                            }
                            else {
                                writeLine();
                                write(exportStarFunction + "(" + parameterName + ");");
                            }
                            writeLine();
                            decreaseIndent();
                            break;
                    }
                    write("}");
                    decreaseIndent();
                }
                write("],");
            }
            function emitExecute(node, startIndex) {
                write("execute: function() {");
                increaseIndent();
                writeLine();
                for (var i = startIndex; i < node.statements.length; ++i) {
                    var statement = node.statements[i];
                    switch (statement.kind) {
                        case 216:
                        case 210:
                        case 209:
                        case 201:
                            continue;
                    }
                    writeLine();
                    emit(statement);
                }
                decreaseIndent();
                writeLine();
                write("}");
            }
            function emitSystemModule(node, startIndex) {
                collectExternalModuleInfo(node);
                ts.Debug.assert(!exportFunctionForFile);
                exportFunctionForFile = makeUniqueName("exports");
                write("System.register([");
                for (var i = 0; i < externalImports.length; ++i) {
                    var text = getExternalModuleNameText(externalImports[i]);
                    if (i !== 0) {
                        write(", ");
                    }
                    write(text);
                }
                write("], function(" + exportFunctionForFile + ") {");
                writeLine();
                increaseIndent();
                emitCaptureThisForNodeIfNecessary(node);
                emitSystemModuleBody(node, startIndex);
                decreaseIndent();
                writeLine();
                write("});");
            }
            function emitAMDDependencies(node, includeNonAmdDependencies) {
                // An AMD define function has the following shape:
                //     define(id?, dependencies?, factory);
                //
                // This has the shape of
                //     define(name, ["module1", "module2"], function (module1Alias) {
                // The location of the alias in the parameter list in the factory function needs to
                // match the position of the module name in the dependency list.
                //
                // To ensure this is true in cases of modules with no aliases, e.g.:
                // `import "module"` or `<amd-dependency path= "a.css" />`
                // we need to add modules without alias names to the end of the dependencies list
                var aliasedModuleNames = [];
                var unaliasedModuleNames = [];
                var importAliasNames = [];
                for (var _a = 0, _b = node.amdDependencies; _a < _b.length; _a++) {
                    var amdDependency = _b[_a];
                    if (amdDependency.name) {
                        aliasedModuleNames.push("\"" + amdDependency.path + "\"");
                        importAliasNames.push(amdDependency.name);
                    }
                    else {
                        unaliasedModuleNames.push("\"" + amdDependency.path + "\"");
                    }
                }
                for (var _c = 0; _c < externalImports.length; _c++) {
                    var importNode = externalImports[_c];
                    var externalModuleName = getExternalModuleNameText(importNode);
                    var importAliasName = getLocalNameForExternalImport(importNode);
                    if (includeNonAmdDependencies && importAliasName) {
                        aliasedModuleNames.push(externalModuleName);
                        importAliasNames.push(importAliasName);
                    }
                    else {
                        unaliasedModuleNames.push(externalModuleName);
                    }
                }
                write("[\"require\", \"exports\"");
                if (aliasedModuleNames.length) {
                    write(", ");
                    write(aliasedModuleNames.join(", "));
                }
                if (unaliasedModuleNames.length) {
                    write(", ");
                    write(unaliasedModuleNames.join(", "));
                }
                write("], function (require, exports");
                if (importAliasNames.length) {
                    write(", ");
                    write(importAliasNames.join(", "));
                }
            }
            function emitAMDModule(node, startIndex) {
                collectExternalModuleInfo(node);
                writeLine();
                write("define(");
                if (node.amdModuleName) {
                    write("\"" + node.amdModuleName + "\", ");
                }
                emitAMDDependencies(node, true);
                write(") {");
                increaseIndent();
                emitExportStarHelper();
                emitCaptureThisForNodeIfNecessary(node);
                emitLinesStartingAt(node.statements, startIndex);
                emitTempDeclarations(true);
                emitExportEquals(true);
                decreaseIndent();
                writeLine();
                write("});");
            }
            function emitCommonJSModule(node, startIndex) {
                collectExternalModuleInfo(node);
                emitExportStarHelper();
                emitCaptureThisForNodeIfNecessary(node);
                emitLinesStartingAt(node.statements, startIndex);
                emitTempDeclarations(true);
                emitExportEquals(false);
            }
            function emitUMDModule(node, startIndex) {
                collectExternalModuleInfo(node);
                writeLines("(function (deps, factory) {\n    if (typeof module === 'object' && typeof module.exports === 'object') {\n        var v = factory(require, exports); if (v !== undefined) module.exports = v;\n    }\n    else if (typeof define === 'function' && define.amd) {\n        define(deps, factory);\n    }\n})(");
                emitAMDDependencies(node, false);
                write(") {");
                increaseIndent();
                emitExportStarHelper();
                emitCaptureThisForNodeIfNecessary(node);
                emitLinesStartingAt(node.statements, startIndex);
                emitTempDeclarations(true);
                emitExportEquals(true);
                decreaseIndent();
                writeLine();
                write("});");
            }
            function emitES6Module(node, startIndex) {
                externalImports = undefined;
                exportSpecifiers = undefined;
                exportEquals = undefined;
                hasExportStars = false;
                emitCaptureThisForNodeIfNecessary(node);
                emitLinesStartingAt(node.statements, startIndex);
                emitTempDeclarations(true);
            }
            function emitExportEquals(emitAsReturn) {
                if (exportEquals && resolver.isValueAliasDeclaration(exportEquals)) {
                    writeLine();
                    emitStart(exportEquals);
                    write(emitAsReturn ? "return " : "module.exports = ");
                    emit(exportEquals.expression);
                    write(";");
                    emitEnd(exportEquals);
                }
            }
            function emitDirectivePrologues(statements, startWithNewLine) {
                for (var i = 0; i < statements.length; ++i) {
                    if (ts.isPrologueDirective(statements[i])) {
                        if (startWithNewLine || i > 0) {
                            writeLine();
                        }
                        emit(statements[i]);
                    }
                    else {
                        return i;
                    }
                }
                return statements.length;
            }
            function writeLines(text) {
                var lines = text.split(/\r\n|\r|\n/g);
                for (var i = 0; i < lines.length; ++i) {
                    var line = lines[i];
                    if (line.length) {
                        writeLine();
                        write(line);
                    }
                }
            }
            function emitSourceFileNode(node) {
                writeLine();
                emitDetachedComments(node);
                var startIndex = emitDirectivePrologues(node.statements, false);
                if (!compilerOptions.noEmitHelpers) {
                    if ((languageVersion < 2) && (!extendsEmitted && resolver.getNodeCheckFlags(node) & 8)) {
                        writeLines(extendsHelper);
                        extendsEmitted = true;
                    }
                    if (!decorateEmitted && resolver.getNodeCheckFlags(node) & 512) {
                        writeLines(decorateHelper);
                        if (compilerOptions.emitDecoratorMetadata) {
                            writeLines(metadataHelper);
                        }
                        decorateEmitted = true;
                    }
                    if (!paramEmitted && resolver.getNodeCheckFlags(node) & 1024) {
                        writeLines(paramHelper);
                        paramEmitted = true;
                    }
                }
                if (ts.isExternalModule(node) || compilerOptions.separateCompilation) {
                    if (languageVersion >= 2) {
                        emitES6Module(node, startIndex);
                    }
                    else if (compilerOptions.module === 2) {
                        emitAMDModule(node, startIndex);
                    }
                    else if (compilerOptions.module === 4) {
                        emitSystemModule(node, startIndex);
                    }
                    else if (compilerOptions.module === 3) {
                        emitUMDModule(node, startIndex);
                    }
                    else {
                        emitCommonJSModule(node, startIndex);
                    }
                }
                else {
                    externalImports = undefined;
                    exportSpecifiers = undefined;
                    exportEquals = undefined;
                    hasExportStars = false;
                    emitCaptureThisForNodeIfNecessary(node);
                    emitLinesStartingAt(node.statements, startIndex);
                    emitTempDeclarations(true);
                }
                emitLeadingComments(node.endOfFileToken);
            }
            function emitNodeWithoutSourceMap(node, allowGeneratedIdentifiers) {
                if (!node) {
                    return;
                }
                if (node.flags & 2) {
                    return emitOnlyPinnedOrTripleSlashComments(node);
                }
                var emitComments = shouldEmitLeadingAndTrailingComments(node);
                if (emitComments) {
                    emitLeadingComments(node);
                }
                emitJavaScriptWorker(node, allowGeneratedIdentifiers);
                if (emitComments) {
                    emitTrailingComments(node);
                }
            }
            function shouldEmitLeadingAndTrailingComments(node) {
                switch (node.kind) {
                    case 203:
                    case 201:
                    case 210:
                    case 209:
                    case 204:
                    case 215:
                        return false;
                    case 206:
                        return shouldEmitModuleDeclaration(node);
                    case 205:
                        return shouldEmitEnumDeclaration(node);
                }
                if (node.kind !== 180 &&
                    node.parent &&
                    node.parent.kind === 164 &&
                    node.parent.body === node &&
                    compilerOptions.target <= 1) {
                    return false;
                }
                return true;
            }
            function emitJavaScriptWorker(node, allowGeneratedIdentifiers) {
                if (allowGeneratedIdentifiers === void 0) { allowGeneratedIdentifiers = true; }
                switch (node.kind) {
                    case 65:
                        return emitIdentifier(node, allowGeneratedIdentifiers);
                    case 130:
                        return emitParameter(node);
                    case 135:
                    case 134:
                        return emitMethod(node);
                    case 137:
                    case 138:
                        return emitAccessor(node);
                    case 93:
                        return emitThis(node);
                    case 91:
                        return emitSuper(node);
                    case 89:
                        return write("null");
                    case 95:
                        return write("true");
                    case 80:
                        return write("false");
                    case 7:
                    case 8:
                    case 9:
                    case 10:
                    case 11:
                    case 12:
                    case 13:
                        return emitLiteral(node);
                    case 172:
                        return emitTemplateExpression(node);
                    case 178:
                        return emitTemplateSpan(node);
                    case 127:
                        return emitQualifiedName(node);
                    case 151:
                        return emitObjectBindingPattern(node);
                    case 152:
                        return emitArrayBindingPattern(node);
                    case 153:
                        return emitBindingElement(node);
                    case 154:
                        return emitArrayLiteral(node);
                    case 155:
                        return emitObjectLiteral(node);
                    case 225:
                        return emitPropertyAssignment(node);
                    case 226:
                        return emitShorthandPropertyAssignment(node);
                    case 128:
                        return emitComputedPropertyName(node);
                    case 156:
                        return emitPropertyAccess(node);
                    case 157:
                        return emitIndexedAccess(node);
                    case 158:
                        return emitCallExpression(node);
                    case 159:
                        return emitNewExpression(node);
                    case 160:
                        return emitTaggedTemplateExpression(node);
                    case 161:
                        return emit(node.expression);
                    case 162:
                        return emitParenExpression(node);
                    case 201:
                    case 163:
                    case 164:
                        return emitFunctionDeclaration(node);
                    case 165:
                        return emitDeleteExpression(node);
                    case 166:
                        return emitTypeOfExpression(node);
                    case 167:
                        return emitVoidExpression(node);
                    case 168:
                        return emitPrefixUnaryExpression(node);
                    case 169:
                        return emitPostfixUnaryExpression(node);
                    case 170:
                        return emitBinaryExpression(node);
                    case 171:
                        return emitConditionalExpression(node);
                    case 174:
                        return emitSpreadElementExpression(node);
                    case 173:
                        return emitYieldExpression(node);
                    case 176:
                        return;
                    case 180:
                    case 207:
                        return emitBlock(node);
                    case 181:
                        return emitVariableStatement(node);
                    case 182:
                        return write(";");
                    case 183:
                        return emitExpressionStatement(node);
                    case 184:
                        return emitIfStatement(node);
                    case 185:
                        return emitDoStatement(node);
                    case 186:
                        return emitWhileStatement(node);
                    case 187:
                        return emitForStatement(node);
                    case 189:
                    case 188:
                        return emitForInOrForOfStatement(node);
                    case 190:
                    case 191:
                        return emitBreakOrContinueStatement(node);
                    case 192:
                        return emitReturnStatement(node);
                    case 193:
                        return emitWithStatement(node);
                    case 194:
                        return emitSwitchStatement(node);
                    case 221:
                    case 222:
                        return emitCaseOrDefaultClause(node);
                    case 195:
                        return emitLabelledStatement(node);
                    case 196:
                        return emitThrowStatement(node);
                    case 197:
                        return emitTryStatement(node);
                    case 224:
                        return emitCatchClause(node);
                    case 198:
                        return emitDebuggerStatement(node);
                    case 199:
                        return emitVariableDeclaration(node);
                    case 175:
                        return emitClassExpression(node);
                    case 202:
                        return emitClassDeclaration(node);
                    case 203:
                        return emitInterfaceDeclaration(node);
                    case 205:
                        return emitEnumDeclaration(node);
                    case 227:
                        return emitEnumMember(node);
                    case 206:
                        return emitModuleDeclaration(node);
                    case 210:
                        return emitImportDeclaration(node);
                    case 209:
                        return emitImportEqualsDeclaration(node);
                    case 216:
                        return emitExportDeclaration(node);
                    case 215:
                        return emitExportAssignment(node);
                    case 228:
                        return emitSourceFileNode(node);
                }
            }
            function hasDetachedComments(pos) {
                return detachedCommentsInfo !== undefined && ts.lastOrUndefined(detachedCommentsInfo).nodePos === pos;
            }
            function getLeadingCommentsWithoutDetachedComments() {
                var leadingComments = ts.getLeadingCommentRanges(currentSourceFile.text, ts.lastOrUndefined(detachedCommentsInfo).detachedCommentEndPos);
                if (detachedCommentsInfo.length - 1) {
                    detachedCommentsInfo.pop();
                }
                else {
                    detachedCommentsInfo = undefined;
                }
                return leadingComments;
            }
            function filterComments(ranges, onlyPinnedOrTripleSlashComments) {
                if (ranges && onlyPinnedOrTripleSlashComments) {
                    ranges = ts.filter(ranges, isPinnedOrTripleSlashComment);
                    if (ranges.length === 0) {
                        return undefined;
                    }
                }
                return ranges;
            }
            function getLeadingCommentsToEmit(node) {
                if (node.parent) {
                    if (node.parent.kind === 228 || node.pos !== node.parent.pos) {
                        if (hasDetachedComments(node.pos)) {
                            return getLeadingCommentsWithoutDetachedComments();
                        }
                        else {
                            return ts.getLeadingCommentRangesOfNode(node, currentSourceFile);
                        }
                    }
                }
            }
            function getTrailingCommentsToEmit(node) {
                if (node.parent) {
                    if (node.parent.kind === 228 || node.end !== node.parent.end) {
                        return ts.getTrailingCommentRanges(currentSourceFile.text, node.end);
                    }
                }
            }
            function emitOnlyPinnedOrTripleSlashComments(node) {
                emitLeadingCommentsWorker(node, true);
            }
            function emitLeadingComments(node) {
                return emitLeadingCommentsWorker(node, compilerOptions.removeComments);
            }
            function emitLeadingCommentsWorker(node, onlyPinnedOrTripleSlashComments) {
                var leadingComments = filterComments(getLeadingCommentsToEmit(node), onlyPinnedOrTripleSlashComments);
                ts.emitNewLineBeforeLeadingComments(currentSourceFile, writer, node, leadingComments);
                ts.emitComments(currentSourceFile, writer, leadingComments, true, newLine, writeComment);
            }
            function emitTrailingComments(node) {
                var trailingComments = filterComments(getTrailingCommentsToEmit(node), compilerOptions.removeComments);
                ts.emitComments(currentSourceFile, writer, trailingComments, false, newLine, writeComment);
            }
            function emitLeadingCommentsOfPosition(pos) {
                var leadingComments;
                if (hasDetachedComments(pos)) {
                    leadingComments = getLeadingCommentsWithoutDetachedComments();
                }
                else {
                    leadingComments = ts.getLeadingCommentRanges(currentSourceFile.text, pos);
                }
                leadingComments = filterComments(leadingComments, compilerOptions.removeComments);
                ts.emitNewLineBeforeLeadingComments(currentSourceFile, writer, { pos: pos, end: pos }, leadingComments);
                ts.emitComments(currentSourceFile, writer, leadingComments, true, newLine, writeComment);
            }
            function emitDetachedComments(node) {
                var leadingComments = ts.getLeadingCommentRanges(currentSourceFile.text, node.pos);
                if (leadingComments) {
                    var detachedComments = [];
                    var lastComment;
                    ts.forEach(leadingComments, function (comment) {
                        if (lastComment) {
                            var lastCommentLine = ts.getLineOfLocalPosition(currentSourceFile, lastComment.end);
                            var commentLine = ts.getLineOfLocalPosition(currentSourceFile, comment.pos);
                            if (commentLine >= lastCommentLine + 2) {
                                return detachedComments;
                            }
                        }
                        detachedComments.push(comment);
                        lastComment = comment;
                    });
                    if (detachedComments.length) {
                        var lastCommentLine = ts.getLineOfLocalPosition(currentSourceFile, ts.lastOrUndefined(detachedComments).end);
                        var nodeLine = ts.getLineOfLocalPosition(currentSourceFile, ts.skipTrivia(currentSourceFile.text, node.pos));
                        if (nodeLine >= lastCommentLine + 2) {
                            ts.emitNewLineBeforeLeadingComments(currentSourceFile, writer, node, leadingComments);
                            ts.emitComments(currentSourceFile, writer, detachedComments, true, newLine, writeComment);
                            var currentDetachedCommentInfo = { nodePos: node.pos, detachedCommentEndPos: ts.lastOrUndefined(detachedComments).end };
                            if (detachedCommentsInfo) {
                                detachedCommentsInfo.push(currentDetachedCommentInfo);
                            }
                            else {
                                detachedCommentsInfo = [currentDetachedCommentInfo];
                            }
                        }
                    }
                }
            }
            function isPinnedOrTripleSlashComment(comment) {
                if (currentSourceFile.text.charCodeAt(comment.pos + 1) === 42) {
                    return currentSourceFile.text.charCodeAt(comment.pos + 2) === 33;
                }
                else if (currentSourceFile.text.charCodeAt(comment.pos + 1) === 47 &&
                    comment.pos + 2 < comment.end &&
                    currentSourceFile.text.charCodeAt(comment.pos + 2) === 47 &&
                    currentSourceFile.text.substring(comment.pos, comment.end).match(ts.fullTripleSlashReferencePathRegEx)) {
                    return true;
                }
            }
        }
        function emitFile(jsFilePath, sourceFile) {
            emitJavaScript(jsFilePath, sourceFile);
            if (compilerOptions.declaration) {
                ts.writeDeclarationFile(jsFilePath, sourceFile, host, resolver, diagnostics);
            }
        }
    }
    ts.emitFiles = emitFiles;
})(ts || (ts = {}));
/// <reference path="sys.ts" />
/// <reference path="emitter.ts" />
var ts;
(function (ts) {
    ts.programTime = 0;
    ts.emitTime = 0;
    ts.ioReadTime = 0;
    ts.ioWriteTime = 0;
    ts.version = "1.5.2";
    var carriageReturnLineFeed = "\r\n";
    var lineFeed = "\n";
    function findConfigFile(searchPath) {
        var fileName = "tsconfig.json";
        while (true) {
            if (ts.sys.fileExists(fileName)) {
                return fileName;
            }
            var parentPath = ts.getDirectoryPath(searchPath);
            if (parentPath === searchPath) {
                break;
            }
            searchPath = parentPath;
            fileName = "../" + fileName;
        }
        return undefined;
    }
    ts.findConfigFile = findConfigFile;
    function createCompilerHost(options, setParentNodes) {
        var currentDirectory;
        var existingDirectories = {};
        function getCanonicalFileName(fileName) {
            return ts.sys.useCaseSensitiveFileNames ? fileName : fileName.toLowerCase();
        }
        var unsupportedFileEncodingErrorCode = -2147024809;
        function getSourceFile(fileName, languageVersion, onError) {
            var text;
            try {
                var start = new Date().getTime();
                text = ts.sys.readFile(fileName, options.charset);
                ts.ioReadTime += new Date().getTime() - start;
            }
            catch (e) {
                if (onError) {
                    onError(e.number === unsupportedFileEncodingErrorCode
                        ? ts.createCompilerDiagnostic(ts.Diagnostics.Unsupported_file_encoding).messageText
                        : e.message);
                }
                text = "";
            }
            return text !== undefined ? ts.createSourceFile(fileName, text, languageVersion, setParentNodes) : undefined;
        }
        function directoryExists(directoryPath) {
            if (ts.hasProperty(existingDirectories, directoryPath)) {
                return true;
            }
            if (ts.sys.directoryExists(directoryPath)) {
                existingDirectories[directoryPath] = true;
                return true;
            }
            return false;
        }
        function ensureDirectoriesExist(directoryPath) {
            if (directoryPath.length > ts.getRootLength(directoryPath) && !directoryExists(directoryPath)) {
                var parentDirectory = ts.getDirectoryPath(directoryPath);
                ensureDirectoriesExist(parentDirectory);
                ts.sys.createDirectory(directoryPath);
            }
        }
        function writeFile(fileName, data, writeByteOrderMark, onError) {
            try {
                var start = new Date().getTime();
                ensureDirectoriesExist(ts.getDirectoryPath(ts.normalizePath(fileName)));
                ts.sys.writeFile(fileName, data, writeByteOrderMark);
                ts.ioWriteTime += new Date().getTime() - start;
            }
            catch (e) {
                if (onError) {
                    onError(e.message);
                }
            }
        }
        var newLine = options.newLine === 0 ? carriageReturnLineFeed :
            options.newLine === 1 ? lineFeed :
                ts.sys.newLine;
        return {
            getSourceFile: getSourceFile,
            getDefaultLibFileName: function (options) { return ts.combinePaths(ts.getDirectoryPath(ts.normalizePath(ts.sys.getExecutingFilePath())), ts.getDefaultLibFileName(options)); },
            writeFile: writeFile,
            getCurrentDirectory: function () { return currentDirectory || (currentDirectory = ts.sys.getCurrentDirectory()); },
            useCaseSensitiveFileNames: function () { return ts.sys.useCaseSensitiveFileNames; },
            getCanonicalFileName: getCanonicalFileName,
            getNewLine: function () { return newLine; }
        };
    }
    ts.createCompilerHost = createCompilerHost;
    function getPreEmitDiagnostics(program, sourceFile) {
        var diagnostics = program.getSyntacticDiagnostics(sourceFile).concat(program.getGlobalDiagnostics()).concat(program.getSemanticDiagnostics(sourceFile));
        if (program.getCompilerOptions().declaration) {
            diagnostics.concat(program.getDeclarationDiagnostics(sourceFile));
        }
        return ts.sortAndDeduplicateDiagnostics(diagnostics);
    }
    ts.getPreEmitDiagnostics = getPreEmitDiagnostics;
    function flattenDiagnosticMessageText(messageText, newLine) {
        if (typeof messageText === "string") {
            return messageText;
        }
        else {
            var diagnosticChain = messageText;
            var result = "";
            var indent = 0;
            while (diagnosticChain) {
                if (indent) {
                    result += newLine;
                    for (var i = 0; i < indent; i++) {
                        result += "  ";
                    }
                }
                result += diagnosticChain.messageText;
                indent++;
                diagnosticChain = diagnosticChain.next;
            }
            return result;
        }
    }
    ts.flattenDiagnosticMessageText = flattenDiagnosticMessageText;
    function createProgram(rootNames, options, host) {
        var program;
        var files = [];
        var filesByName = {};
        var diagnostics = ts.createDiagnosticCollection();
        var seenNoDefaultLib = options.noLib;
        var commonSourceDirectory;
        var diagnosticsProducingTypeChecker;
        var noDiagnosticsTypeChecker;
        var start = new Date().getTime();
        host = host || createCompilerHost(options);
        ts.forEach(rootNames, function (name) { return processRootFile(name, false); });
        if (!seenNoDefaultLib) {
            processRootFile(host.getDefaultLibFileName(options), true);
        }
        verifyCompilerOptions();
        ts.programTime += new Date().getTime() - start;
        program = {
            getSourceFile: getSourceFile,
            getSourceFiles: function () { return files; },
            getCompilerOptions: function () { return options; },
            getSyntacticDiagnostics: getSyntacticDiagnostics,
            getGlobalDiagnostics: getGlobalDiagnostics,
            getSemanticDiagnostics: getSemanticDiagnostics,
            getDeclarationDiagnostics: getDeclarationDiagnostics,
            getTypeChecker: getTypeChecker,
            getDiagnosticsProducingTypeChecker: getDiagnosticsProducingTypeChecker,
            getCommonSourceDirectory: function () { return commonSourceDirectory; },
            emit: emit,
            getCurrentDirectory: function () { return host.getCurrentDirectory(); },
            getNodeCount: function () { return getDiagnosticsProducingTypeChecker().getNodeCount(); },
            getIdentifierCount: function () { return getDiagnosticsProducingTypeChecker().getIdentifierCount(); },
            getSymbolCount: function () { return getDiagnosticsProducingTypeChecker().getSymbolCount(); },
            getTypeCount: function () { return getDiagnosticsProducingTypeChecker().getTypeCount(); }
        };
        return program;
        function getEmitHost(writeFileCallback) {
            return {
                getCanonicalFileName: function (fileName) { return host.getCanonicalFileName(fileName); },
                getCommonSourceDirectory: program.getCommonSourceDirectory,
                getCompilerOptions: program.getCompilerOptions,
                getCurrentDirectory: function () { return host.getCurrentDirectory(); },
                getNewLine: function () { return host.getNewLine(); },
                getSourceFile: program.getSourceFile,
                getSourceFiles: program.getSourceFiles,
                writeFile: writeFileCallback || (function (fileName, data, writeByteOrderMark, onError) { return host.writeFile(fileName, data, writeByteOrderMark, onError); })
            };
        }
        function getDiagnosticsProducingTypeChecker() {
            return diagnosticsProducingTypeChecker || (diagnosticsProducingTypeChecker = ts.createTypeChecker(program, true));
        }
        function getTypeChecker() {
            return noDiagnosticsTypeChecker || (noDiagnosticsTypeChecker = ts.createTypeChecker(program, false));
        }
        function emit(sourceFile, writeFileCallback) {
            if (options.noEmitOnError && getPreEmitDiagnostics(this).length > 0) {
                return { diagnostics: [], sourceMaps: undefined, emitSkipped: true };
            }
            var emitResolver = getDiagnosticsProducingTypeChecker().getEmitResolver(options.out ? undefined : sourceFile);
            var start = new Date().getTime();
            var emitResult = ts.emitFiles(emitResolver, getEmitHost(writeFileCallback), sourceFile);
            ts.emitTime += new Date().getTime() - start;
            return emitResult;
        }
        function getSourceFile(fileName) {
            fileName = host.getCanonicalFileName(ts.normalizeSlashes(fileName));
            return ts.hasProperty(filesByName, fileName) ? filesByName[fileName] : undefined;
        }
        function getDiagnosticsHelper(sourceFile, getDiagnostics) {
            if (sourceFile) {
                return getDiagnostics(sourceFile);
            }
            var allDiagnostics = [];
            ts.forEach(program.getSourceFiles(), function (sourceFile) {
                ts.addRange(allDiagnostics, getDiagnostics(sourceFile));
            });
            return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
        }
        function getSyntacticDiagnostics(sourceFile) {
            return getDiagnosticsHelper(sourceFile, getSyntacticDiagnosticsForFile);
        }
        function getSemanticDiagnostics(sourceFile) {
            return getDiagnosticsHelper(sourceFile, getSemanticDiagnosticsForFile);
        }
        function getDeclarationDiagnostics(sourceFile) {
            return getDiagnosticsHelper(sourceFile, getDeclarationDiagnosticsForFile);
        }
        function getSyntacticDiagnosticsForFile(sourceFile) {
            return sourceFile.parseDiagnostics;
        }
        function getSemanticDiagnosticsForFile(sourceFile) {
            var typeChecker = getDiagnosticsProducingTypeChecker();
            ts.Debug.assert(!!sourceFile.bindDiagnostics);
            var bindDiagnostics = sourceFile.bindDiagnostics;
            var checkDiagnostics = typeChecker.getDiagnostics(sourceFile);
            var programDiagnostics = diagnostics.getDiagnostics(sourceFile.fileName);
            return bindDiagnostics.concat(checkDiagnostics).concat(programDiagnostics);
        }
        function getDeclarationDiagnosticsForFile(sourceFile) {
            if (!ts.isDeclarationFile(sourceFile)) {
                var resolver = getDiagnosticsProducingTypeChecker().getEmitResolver(sourceFile);
                var writeFile = function () { };
                return ts.getDeclarationDiagnostics(getEmitHost(writeFile), resolver, sourceFile);
            }
        }
        function getGlobalDiagnostics() {
            var typeChecker = getDiagnosticsProducingTypeChecker();
            var allDiagnostics = [];
            ts.addRange(allDiagnostics, typeChecker.getGlobalDiagnostics());
            ts.addRange(allDiagnostics, diagnostics.getGlobalDiagnostics());
            return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
        }
        function hasExtension(fileName) {
            return ts.getBaseFileName(fileName).indexOf(".") >= 0;
        }
        function processRootFile(fileName, isDefaultLib) {
            processSourceFile(ts.normalizePath(fileName), isDefaultLib);
        }
        function processSourceFile(fileName, isDefaultLib, refFile, refPos, refEnd) {
            var start;
            var length;
            var extensions;
            var diagnosticArgument;
            if (refEnd !== undefined && refPos !== undefined) {
                start = refPos;
                length = refEnd - refPos;
            }
            var diagnostic;
            if (hasExtension(fileName)) {
                if (!options.allowNonTsExtensions && !ts.forEach(ts.supportedExtensions, function (extension) { return ts.fileExtensionIs(host.getCanonicalFileName(fileName), extension); })) {
                    diagnostic = ts.Diagnostics.File_0_has_unsupported_extension_The_only_supported_extensions_are_1;
                    diagnosticArgument = [fileName, "'" + ts.supportedExtensions.join("', '") + "'"];
                }
                else if (!findSourceFile(fileName, isDefaultLib, refFile, refPos, refEnd)) {
                    diagnostic = ts.Diagnostics.File_0_not_found;
                    diagnosticArgument = [fileName];
                }
                else if (refFile && host.getCanonicalFileName(fileName) === host.getCanonicalFileName(refFile.fileName)) {
                    diagnostic = ts.Diagnostics.A_file_cannot_have_a_reference_to_itself;
                    diagnosticArgument = [fileName];
                }
            }
            else {
                if (options.allowNonTsExtensions && !findSourceFile(fileName, isDefaultLib, refFile, refPos, refEnd)) {
                    diagnostic = ts.Diagnostics.File_0_not_found;
                    diagnosticArgument = [fileName];
                }
                else if (!ts.forEach(ts.supportedExtensions, function (extension) { return findSourceFile(fileName + extension, isDefaultLib, refFile, refPos, refEnd); })) {
                    diagnostic = ts.Diagnostics.File_0_not_found;
                    fileName += ".ts";
                    diagnosticArgument = [fileName];
                }
            }
            if (diagnostic) {
                if (refFile) {
                    diagnostics.add(ts.createFileDiagnostic.apply(void 0, [refFile, start, length, diagnostic].concat(diagnosticArgument)));
                }
                else {
                    diagnostics.add(ts.createCompilerDiagnostic.apply(void 0, [diagnostic].concat(diagnosticArgument)));
                }
            }
        }
        function findSourceFile(fileName, isDefaultLib, refFile, refStart, refLength) {
            var canonicalName = host.getCanonicalFileName(ts.normalizeSlashes(fileName));
            if (ts.hasProperty(filesByName, canonicalName)) {
                return getSourceFileFromCache(fileName, canonicalName, false);
            }
            else {
                var normalizedAbsolutePath = ts.getNormalizedAbsolutePath(fileName, host.getCurrentDirectory());
                var canonicalAbsolutePath = host.getCanonicalFileName(normalizedAbsolutePath);
                if (ts.hasProperty(filesByName, canonicalAbsolutePath)) {
                    return getSourceFileFromCache(normalizedAbsolutePath, canonicalAbsolutePath, true);
                }
                var file = filesByName[canonicalName] = host.getSourceFile(fileName, options.target, function (hostErrorMessage) {
                    if (refFile) {
                        diagnostics.add(ts.createFileDiagnostic(refFile, refStart, refLength, ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, hostErrorMessage));
                    }
                    else {
                        diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, hostErrorMessage));
                    }
                });
                if (file) {
                    seenNoDefaultLib = seenNoDefaultLib || file.hasNoDefaultLib;
                    filesByName[canonicalAbsolutePath] = file;
                    if (!options.noResolve) {
                        var basePath = ts.getDirectoryPath(fileName);
                        processReferencedFiles(file, basePath);
                        processImportedModules(file, basePath);
                    }
                    if (isDefaultLib) {
                        files.unshift(file);
                    }
                    else {
                        files.push(file);
                    }
                }
                return file;
            }
            function getSourceFileFromCache(fileName, canonicalName, useAbsolutePath) {
                var file = filesByName[canonicalName];
                if (file && host.useCaseSensitiveFileNames()) {
                    var sourceFileName = useAbsolutePath ? ts.getNormalizedAbsolutePath(file.fileName, host.getCurrentDirectory()) : file.fileName;
                    if (canonicalName !== sourceFileName) {
                        diagnostics.add(ts.createFileDiagnostic(refFile, refStart, refLength, ts.Diagnostics.File_name_0_differs_from_already_included_file_name_1_only_in_casing, fileName, sourceFileName));
                    }
                }
                return file;
            }
        }
        function processReferencedFiles(file, basePath) {
            ts.forEach(file.referencedFiles, function (ref) {
                var referencedFileName = ts.isRootedDiskPath(ref.fileName) ? ref.fileName : ts.combinePaths(basePath, ref.fileName);
                processSourceFile(ts.normalizePath(referencedFileName), false, file, ref.pos, ref.end);
            });
        }
        function processImportedModules(file, basePath) {
            ts.forEach(file.statements, function (node) {
                if (node.kind === 210 || node.kind === 209 || node.kind === 216) {
                    var moduleNameExpr = ts.getExternalModuleName(node);
                    if (moduleNameExpr && moduleNameExpr.kind === 8) {
                        var moduleNameText = moduleNameExpr.text;
                        if (moduleNameText) {
                            var searchPath = basePath;
                            var searchName;
                            while (true) {
                                searchName = ts.normalizePath(ts.combinePaths(searchPath, moduleNameText));
                                if (ts.forEach(ts.supportedExtensions, function (extension) { return findModuleSourceFile(searchName + extension, moduleNameExpr); })) {
                                    break;
                                }
                                var parentPath = ts.getDirectoryPath(searchPath);
                                if (parentPath === searchPath) {
                                    break;
                                }
                                searchPath = parentPath;
                            }
                        }
                    }
                }
                else if (node.kind === 206 && node.name.kind === 8 && (node.flags & 2 || ts.isDeclarationFile(file))) {
                    ts.forEachChild(node.body, function (node) {
                        if (ts.isExternalModuleImportEqualsDeclaration(node) &&
                            ts.getExternalModuleImportEqualsDeclarationExpression(node).kind === 8) {
                            var nameLiteral = ts.getExternalModuleImportEqualsDeclarationExpression(node);
                            var moduleName = nameLiteral.text;
                            if (moduleName) {
                                var searchName = ts.normalizePath(ts.combinePaths(basePath, moduleName));
                                ts.forEach(ts.supportedExtensions, function (extension) { return findModuleSourceFile(searchName + extension, nameLiteral); });
                            }
                        }
                    });
                }
            });
            function findModuleSourceFile(fileName, nameLiteral) {
                return findSourceFile(fileName, false, file, nameLiteral.pos, nameLiteral.end - nameLiteral.pos);
            }
        }
        function computeCommonSourceDirectory(sourceFiles) {
            var commonPathComponents;
            var currentDirectory = host.getCurrentDirectory();
            ts.forEach(files, function (sourceFile) {
                if (ts.isDeclarationFile(sourceFile)) {
                    return;
                }
                var sourcePathComponents = ts.getNormalizedPathComponents(sourceFile.fileName, currentDirectory);
                sourcePathComponents.pop();
                if (!commonPathComponents) {
                    commonPathComponents = sourcePathComponents;
                    return;
                }
                for (var i = 0, n = Math.min(commonPathComponents.length, sourcePathComponents.length); i < n; i++) {
                    if (commonPathComponents[i] !== sourcePathComponents[i]) {
                        if (i === 0) {
                            diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_find_the_common_subdirectory_path_for_the_input_files));
                            return;
                        }
                        commonPathComponents.length = i;
                        break;
                    }
                }
                if (sourcePathComponents.length < commonPathComponents.length) {
                    commonPathComponents.length = sourcePathComponents.length;
                }
            });
            return ts.getNormalizedPathFromPathComponents(commonPathComponents);
        }
        function checkSourceFilesBelongToPath(sourceFiles, rootDirectory) {
            var allFilesBelongToPath = true;
            if (sourceFiles) {
                var currentDirectory = host.getCurrentDirectory();
                var absoluteRootDirectoryPath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(rootDirectory, currentDirectory));
                for (var _i = 0; _i < sourceFiles.length; _i++) {
                    var sourceFile = sourceFiles[_i];
                    if (!ts.isDeclarationFile(sourceFile)) {
                        var absoluteSourceFilePath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(sourceFile.fileName, currentDirectory));
                        if (absoluteSourceFilePath.indexOf(absoluteRootDirectoryPath) !== 0) {
                            diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files, sourceFile.fileName, options.rootDir));
                            allFilesBelongToPath = false;
                        }
                    }
                }
            }
            return allFilesBelongToPath;
        }
        function verifyCompilerOptions() {
            if (options.separateCompilation) {
                if (options.sourceMap) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_sourceMap_cannot_be_specified_with_option_separateCompilation));
                }
                if (options.declaration) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_declaration_cannot_be_specified_with_option_separateCompilation));
                }
                if (options.noEmitOnError) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_noEmitOnError_cannot_be_specified_with_option_separateCompilation));
                }
                if (options.out) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_out_cannot_be_specified_with_option_separateCompilation));
                }
            }
            if (options.inlineSourceMap) {
                if (options.sourceMap) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_sourceMap_cannot_be_specified_with_option_inlineSourceMap));
                }
                if (options.mapRoot) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_mapRoot_cannot_be_specified_with_option_inlineSourceMap));
                }
                if (options.sourceRoot) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_sourceRoot_cannot_be_specified_with_option_inlineSourceMap));
                }
            }
            if (options.inlineSources) {
                if (!options.sourceMap && !options.inlineSourceMap) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_inlineSources_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided));
                }
            }
            if (!options.sourceMap && (options.mapRoot || options.sourceRoot)) {
                if (options.mapRoot) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_mapRoot_cannot_be_specified_without_specifying_sourceMap_option));
                }
                if (options.sourceRoot) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_sourceRoot_cannot_be_specified_without_specifying_sourceMap_option));
                }
                return;
            }
            var languageVersion = options.target || 0;
            var firstExternalModuleSourceFile = ts.forEach(files, function (f) { return ts.isExternalModule(f) ? f : undefined; });
            if (options.separateCompilation) {
                if (!options.module && languageVersion < 2) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_separateCompilation_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES6_or_higher));
                }
                var firstNonExternalModuleSourceFile = ts.forEach(files, function (f) { return !ts.isExternalModule(f) && !ts.isDeclarationFile(f) ? f : undefined; });
                if (firstNonExternalModuleSourceFile) {
                    var span = ts.getErrorSpanForNode(firstNonExternalModuleSourceFile, firstNonExternalModuleSourceFile);
                    diagnostics.add(ts.createFileDiagnostic(firstNonExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_compile_namespaces_when_the_separateCompilation_flag_is_provided));
                }
            }
            else if (firstExternalModuleSourceFile && languageVersion < 2 && !options.module) {
                var span = ts.getErrorSpanForNode(firstExternalModuleSourceFile, firstExternalModuleSourceFile.externalModuleIndicator);
                diagnostics.add(ts.createFileDiagnostic(firstExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_compile_modules_unless_the_module_flag_is_provided));
            }
            if (options.module && languageVersion >= 2) {
                diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_compile_modules_into_commonjs_amd_system_or_umd_when_targeting_ES6_or_higher));
            }
            if (options.outDir ||
                options.sourceRoot ||
                (options.mapRoot &&
                    (!options.out || firstExternalModuleSourceFile !== undefined))) {
                if (options.rootDir && checkSourceFilesBelongToPath(files, options.rootDir)) {
                    commonSourceDirectory = ts.getNormalizedAbsolutePath(options.rootDir, host.getCurrentDirectory());
                }
                else {
                    commonSourceDirectory = computeCommonSourceDirectory(files);
                }
                if (commonSourceDirectory && commonSourceDirectory[commonSourceDirectory.length - 1] !== ts.directorySeparator) {
                    commonSourceDirectory += ts.directorySeparator;
                }
            }
            if (options.noEmit) {
                if (options.out || options.outDir) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_noEmit_cannot_be_specified_with_option_out_or_outDir));
                }
                if (options.declaration) {
                    diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_noEmit_cannot_be_specified_with_option_declaration));
                }
            }
        }
    }
    ts.createProgram = createProgram;
})(ts || (ts = {}));
// Copyright (c) Microsoft. All rights reserved. Licensed under the Apache License, Version 2.0. 
// See LICENSE.txt in the project root for complete license information.
/// <reference path='services.ts' />
var ts;
(function (ts) {
    var BreakpointResolver;
    (function (BreakpointResolver) {
        function spanInSourceFileAtLocation(sourceFile, position) {
            if (sourceFile.flags & 2048) {
                return undefined;
            }
            var tokenAtLocation = ts.getTokenAtPosition(sourceFile, position);
            var lineOfPosition = sourceFile.getLineAndCharacterOfPosition(position).line;
            if (sourceFile.getLineAndCharacterOfPosition(tokenAtLocation.getStart()).line > lineOfPosition) {
                tokenAtLocation = ts.findPrecedingToken(tokenAtLocation.pos, sourceFile);
                if (!tokenAtLocation || sourceFile.getLineAndCharacterOfPosition(tokenAtLocation.getEnd()).line !== lineOfPosition) {
                    return undefined;
                }
            }
            if (ts.isInAmbientContext(tokenAtLocation)) {
                return undefined;
            }
            return spanInNode(tokenAtLocation);
            function textSpan(startNode, endNode) {
                return ts.createTextSpanFromBounds(startNode.getStart(), (endNode || startNode).getEnd());
            }
            function spanInNodeIfStartsOnSameLine(node, otherwiseOnNode) {
                if (node && lineOfPosition === sourceFile.getLineAndCharacterOfPosition(node.getStart()).line) {
                    return spanInNode(node);
                }
                return spanInNode(otherwiseOnNode);
            }
            function spanInPreviousNode(node) {
                return spanInNode(ts.findPrecedingToken(node.pos, sourceFile));
            }
            function spanInNextNode(node) {
                return spanInNode(ts.findNextToken(node, node.parent));
            }
            function spanInNode(node) {
                if (node) {
                    if (ts.isExpression(node)) {
                        if (node.parent.kind === 185) {
                            return spanInPreviousNode(node);
                        }
                        if (node.parent.kind === 187) {
                            return textSpan(node);
                        }
                        if (node.parent.kind === 170 && node.parent.operatorToken.kind === 23) {
                            return textSpan(node);
                        }
                        if (node.parent.kind == 164 && node.parent.body == node) {
                            return textSpan(node);
                        }
                    }
                    switch (node.kind) {
                        case 181:
                            return spanInVariableDeclaration(node.declarationList.declarations[0]);
                        case 199:
                        case 133:
                        case 132:
                            return spanInVariableDeclaration(node);
                        case 130:
                            return spanInParameterDeclaration(node);
                        case 201:
                        case 135:
                        case 134:
                        case 137:
                        case 138:
                        case 136:
                        case 163:
                        case 164:
                            return spanInFunctionDeclaration(node);
                        case 180:
                            if (ts.isFunctionBlock(node)) {
                                return spanInFunctionBlock(node);
                            }
                        case 207:
                            return spanInBlock(node);
                        case 224:
                            return spanInBlock(node.block);
                        case 183:
                            return textSpan(node.expression);
                        case 192:
                            return textSpan(node.getChildAt(0), node.expression);
                        case 186:
                            return textSpan(node, ts.findNextToken(node.expression, node));
                        case 185:
                            return spanInNode(node.statement);
                        case 198:
                            return textSpan(node.getChildAt(0));
                        case 184:
                            return textSpan(node, ts.findNextToken(node.expression, node));
                        case 195:
                            return spanInNode(node.statement);
                        case 191:
                        case 190:
                            return textSpan(node.getChildAt(0), node.label);
                        case 187:
                            return spanInForStatement(node);
                        case 188:
                        case 189:
                            return textSpan(node, ts.findNextToken(node.expression, node));
                        case 194:
                            return textSpan(node, ts.findNextToken(node.expression, node));
                        case 221:
                        case 222:
                            return spanInNode(node.statements[0]);
                        case 197:
                            return spanInBlock(node.tryBlock);
                        case 196:
                            return textSpan(node, node.expression);
                        case 215:
                            return textSpan(node, node.expression);
                        case 209:
                            return textSpan(node, node.moduleReference);
                        case 210:
                            return textSpan(node, node.moduleSpecifier);
                        case 216:
                            return textSpan(node, node.moduleSpecifier);
                        case 206:
                            if (ts.getModuleInstanceState(node) !== 1) {
                                return undefined;
                            }
                        case 202:
                        case 205:
                        case 227:
                        case 158:
                        case 159:
                            return textSpan(node);
                        case 193:
                            return spanInNode(node.statement);
                        case 203:
                        case 204:
                            return undefined;
                        case 22:
                        case 1:
                            return spanInNodeIfStartsOnSameLine(ts.findPrecedingToken(node.pos, sourceFile));
                        case 23:
                            return spanInPreviousNode(node);
                        case 14:
                            return spanInOpenBraceToken(node);
                        case 15:
                            return spanInCloseBraceToken(node);
                        case 16:
                            return spanInOpenParenToken(node);
                        case 17:
                            return spanInCloseParenToken(node);
                        case 51:
                            return spanInColonToken(node);
                        case 25:
                        case 24:
                            return spanInGreaterThanOrLessThanToken(node);
                        case 100:
                            return spanInWhileKeyword(node);
                        case 76:
                        case 68:
                        case 81:
                            return spanInNextNode(node);
                        default:
                            if (node.parent.kind === 225 && node.parent.name === node) {
                                return spanInNode(node.parent.initializer);
                            }
                            if (node.parent.kind === 161 && node.parent.type === node) {
                                return spanInNode(node.parent.expression);
                            }
                            if (ts.isFunctionLike(node.parent) && node.parent.type === node) {
                                return spanInPreviousNode(node);
                            }
                            return spanInNode(node.parent);
                    }
                }
                function spanInVariableDeclaration(variableDeclaration) {
                    if (variableDeclaration.parent.parent.kind === 188 ||
                        variableDeclaration.parent.parent.kind === 189) {
                        return spanInNode(variableDeclaration.parent.parent);
                    }
                    var isParentVariableStatement = variableDeclaration.parent.parent.kind === 181;
                    var isDeclarationOfForStatement = variableDeclaration.parent.parent.kind === 187 && ts.contains(variableDeclaration.parent.parent.initializer.declarations, variableDeclaration);
                    var declarations = isParentVariableStatement
                        ? variableDeclaration.parent.parent.declarationList.declarations
                        : isDeclarationOfForStatement
                            ? variableDeclaration.parent.parent.initializer.declarations
                            : undefined;
                    if (variableDeclaration.initializer || (variableDeclaration.flags & 1)) {
                        if (declarations && declarations[0] === variableDeclaration) {
                            if (isParentVariableStatement) {
                                return textSpan(variableDeclaration.parent, variableDeclaration);
                            }
                            else {
                                ts.Debug.assert(isDeclarationOfForStatement);
                                return textSpan(ts.findPrecedingToken(variableDeclaration.pos, sourceFile, variableDeclaration.parent), variableDeclaration);
                            }
                        }
                        else {
                            return textSpan(variableDeclaration);
                        }
                    }
                    else if (declarations && declarations[0] !== variableDeclaration) {
                        var indexOfCurrentDeclaration = ts.indexOf(declarations, variableDeclaration);
                        return spanInVariableDeclaration(declarations[indexOfCurrentDeclaration - 1]);
                    }
                }
                function canHaveSpanInParameterDeclaration(parameter) {
                    return !!parameter.initializer || parameter.dotDotDotToken !== undefined ||
                        !!(parameter.flags & 16) || !!(parameter.flags & 32);
                }
                function spanInParameterDeclaration(parameter) {
                    if (canHaveSpanInParameterDeclaration(parameter)) {
                        return textSpan(parameter);
                    }
                    else {
                        var functionDeclaration = parameter.parent;
                        var indexOfParameter = ts.indexOf(functionDeclaration.parameters, parameter);
                        if (indexOfParameter) {
                            return spanInParameterDeclaration(functionDeclaration.parameters[indexOfParameter - 1]);
                        }
                        else {
                            return spanInNode(functionDeclaration.body);
                        }
                    }
                }
                function canFunctionHaveSpanInWholeDeclaration(functionDeclaration) {
                    return !!(functionDeclaration.flags & 1) ||
                        (functionDeclaration.parent.kind === 202 && functionDeclaration.kind !== 136);
                }
                function spanInFunctionDeclaration(functionDeclaration) {
                    if (!functionDeclaration.body) {
                        return undefined;
                    }
                    if (canFunctionHaveSpanInWholeDeclaration(functionDeclaration)) {
                        return textSpan(functionDeclaration);
                    }
                    return spanInNode(functionDeclaration.body);
                }
                function spanInFunctionBlock(block) {
                    var nodeForSpanInBlock = block.statements.length ? block.statements[0] : block.getLastToken();
                    if (canFunctionHaveSpanInWholeDeclaration(block.parent)) {
                        return spanInNodeIfStartsOnSameLine(block.parent, nodeForSpanInBlock);
                    }
                    return spanInNode(nodeForSpanInBlock);
                }
                function spanInBlock(block) {
                    switch (block.parent.kind) {
                        case 206:
                            if (ts.getModuleInstanceState(block.parent) !== 1) {
                                return undefined;
                            }
                        case 186:
                        case 184:
                        case 188:
                        case 189:
                            return spanInNodeIfStartsOnSameLine(block.parent, block.statements[0]);
                        case 187:
                            return spanInNodeIfStartsOnSameLine(ts.findPrecedingToken(block.pos, sourceFile, block.parent), block.statements[0]);
                    }
                    return spanInNode(block.statements[0]);
                }
                function spanInForStatement(forStatement) {
                    if (forStatement.initializer) {
                        if (forStatement.initializer.kind === 200) {
                            var variableDeclarationList = forStatement.initializer;
                            if (variableDeclarationList.declarations.length > 0) {
                                return spanInNode(variableDeclarationList.declarations[0]);
                            }
                        }
                        else {
                            return spanInNode(forStatement.initializer);
                        }
                    }
                    if (forStatement.condition) {
                        return textSpan(forStatement.condition);
                    }
                    if (forStatement.incrementor) {
                        return textSpan(forStatement.incrementor);
                    }
                }
                function spanInOpenBraceToken(node) {
                    switch (node.parent.kind) {
                        case 205:
                            var enumDeclaration = node.parent;
                            return spanInNodeIfStartsOnSameLine(ts.findPrecedingToken(node.pos, sourceFile, node.parent), enumDeclaration.members.length ? enumDeclaration.members[0] : enumDeclaration.getLastToken(sourceFile));
                        case 202:
                            var classDeclaration = node.parent;
                            return spanInNodeIfStartsOnSameLine(ts.findPrecedingToken(node.pos, sourceFile, node.parent), classDeclaration.members.length ? classDeclaration.members[0] : classDeclaration.getLastToken(sourceFile));
                        case 208:
                            return spanInNodeIfStartsOnSameLine(node.parent.parent, node.parent.clauses[0]);
                    }
                    return spanInNode(node.parent);
                }
                function spanInCloseBraceToken(node) {
                    switch (node.parent.kind) {
                        case 207:
                            if (ts.getModuleInstanceState(node.parent.parent) !== 1) {
                                return undefined;
                            }
                        case 205:
                        case 202:
                            return textSpan(node);
                        case 180:
                            if (ts.isFunctionBlock(node.parent)) {
                                return textSpan(node);
                            }
                        case 224:
                            return spanInNode(ts.lastOrUndefined(node.parent.statements));
                            ;
                        case 208:
                            var caseBlock = node.parent;
                            var lastClause = ts.lastOrUndefined(caseBlock.clauses);
                            if (lastClause) {
                                return spanInNode(ts.lastOrUndefined(lastClause.statements));
                            }
                            return undefined;
                        default:
                            return spanInNode(node.parent);
                    }
                }
                function spanInOpenParenToken(node) {
                    if (node.parent.kind === 185) {
                        return spanInPreviousNode(node);
                    }
                    return spanInNode(node.parent);
                }
                function spanInCloseParenToken(node) {
                    switch (node.parent.kind) {
                        case 163:
                        case 201:
                        case 164:
                        case 135:
                        case 134:
                        case 137:
                        case 138:
                        case 136:
                        case 186:
                        case 185:
                        case 187:
                            return spanInPreviousNode(node);
                        default:
                            return spanInNode(node.parent);
                    }
                    return spanInNode(node.parent);
                }
                function spanInColonToken(node) {
                    if (ts.isFunctionLike(node.parent) || node.parent.kind === 225) {
                        return spanInPreviousNode(node);
                    }
                    return spanInNode(node.parent);
                }
                function spanInGreaterThanOrLessThanToken(node) {
                    if (node.parent.kind === 161) {
                        return spanInNode(node.parent.expression);
                    }
                    return spanInNode(node.parent);
                }
                function spanInWhileKeyword(node) {
                    if (node.parent.kind === 185) {
                        return textSpan(node, ts.findNextToken(node.parent.expression, node.parent));
                    }
                    return spanInNode(node.parent);
                }
            }
        }
        BreakpointResolver.spanInSourceFileAtLocation = spanInSourceFileAtLocation;
    })(BreakpointResolver = ts.BreakpointResolver || (ts.BreakpointResolver = {}));
})(ts || (ts = {}));
var ts;
(function (ts) {
    var OutliningElementsCollector;
    (function (OutliningElementsCollector) {
        function collectElements(sourceFile) {
            var elements = [];
            var collapseText = "...";
            function addOutliningSpan(hintSpanNode, startElement, endElement, autoCollapse) {
                if (hintSpanNode && startElement && endElement) {
                    var span = {
                        textSpan: ts.createTextSpanFromBounds(startElement.pos, endElement.end),
                        hintSpan: ts.createTextSpanFromBounds(hintSpanNode.getStart(), hintSpanNode.end),
                        bannerText: collapseText,
                        autoCollapse: autoCollapse
                    };
                    elements.push(span);
                }
            }
            function addOutliningSpanComments(commentSpan, autoCollapse) {
                if (commentSpan) {
                    var span = {
                        textSpan: ts.createTextSpanFromBounds(commentSpan.pos, commentSpan.end),
                        hintSpan: ts.createTextSpanFromBounds(commentSpan.pos, commentSpan.end),
                        bannerText: collapseText,
                        autoCollapse: autoCollapse
                    };
                    elements.push(span);
                }
            }
            function addOutliningForLeadingCommentsForNode(n) {
                var comments = ts.getLeadingCommentRangesOfNode(n, sourceFile);
                if (comments) {
                    var firstSingleLineCommentStart = -1;
                    var lastSingleLineCommentEnd = -1;
                    var isFirstSingleLineComment = true;
                    var singleLineCommentCount = 0;
                    for (var _i = 0; _i < comments.length; _i++) {
                        var currentComment = comments[_i];
                        if (currentComment.kind === 2) {
                            if (isFirstSingleLineComment) {
                                firstSingleLineCommentStart = currentComment.pos;
                            }
                            isFirstSingleLineComment = false;
                            lastSingleLineCommentEnd = currentComment.end;
                            singleLineCommentCount++;
                        }
                        else if (currentComment.kind === 3) {
                            combineAndAddMultipleSingleLineComments(singleLineCommentCount, firstSingleLineCommentStart, lastSingleLineCommentEnd);
                            addOutliningSpanComments(currentComment, false);
                            singleLineCommentCount = 0;
                            lastSingleLineCommentEnd = -1;
                            isFirstSingleLineComment = true;
                        }
                    }
                    combineAndAddMultipleSingleLineComments(singleLineCommentCount, firstSingleLineCommentStart, lastSingleLineCommentEnd);
                }
            }
            function combineAndAddMultipleSingleLineComments(count, start, end) {
                if (count > 1) {
                    var multipleSingleLineComments = {
                        pos: start,
                        end: end,
                        kind: 2
                    };
                    addOutliningSpanComments(multipleSingleLineComments, false);
                }
            }
            function autoCollapse(node) {
                return ts.isFunctionBlock(node) && node.parent.kind !== 164;
            }
            var depth = 0;
            var maxDepth = 20;
            function walk(n) {
                if (depth > maxDepth) {
                    return;
                }
                if (ts.isDeclaration(n)) {
                    addOutliningForLeadingCommentsForNode(n);
                }
                switch (n.kind) {
                    case 180:
                        if (!ts.isFunctionBlock(n)) {
                            var parent_6 = n.parent;
                            var openBrace = ts.findChildOfKind(n, 14, sourceFile);
                            var closeBrace = ts.findChildOfKind(n, 15, sourceFile);
                            if (parent_6.kind === 185 ||
                                parent_6.kind === 188 ||
                                parent_6.kind === 189 ||
                                parent_6.kind === 187 ||
                                parent_6.kind === 184 ||
                                parent_6.kind === 186 ||
                                parent_6.kind === 193 ||
                                parent_6.kind === 224) {
                                addOutliningSpan(parent_6, openBrace, closeBrace, autoCollapse(n));
                                break;
                            }
                            if (parent_6.kind === 197) {
                                var tryStatement = parent_6;
                                if (tryStatement.tryBlock === n) {
                                    addOutliningSpan(parent_6, openBrace, closeBrace, autoCollapse(n));
                                    break;
                                }
                                else if (tryStatement.finallyBlock === n) {
                                    var finallyKeyword = ts.findChildOfKind(tryStatement, 81, sourceFile);
                                    if (finallyKeyword) {
                                        addOutliningSpan(finallyKeyword, openBrace, closeBrace, autoCollapse(n));
                                        break;
                                    }
                                }
                            }
                            var span = ts.createTextSpanFromBounds(n.getStart(), n.end);
                            elements.push({
                                textSpan: span,
                                hintSpan: span,
                                bannerText: collapseText,
                                autoCollapse: autoCollapse(n)
                            });
                            break;
                        }
                    case 207: {
                        var openBrace = ts.findChildOfKind(n, 14, sourceFile);
                        var closeBrace = ts.findChildOfKind(n, 15, sourceFile);
                        addOutliningSpan(n.parent, openBrace, closeBrace, autoCollapse(n));
                        break;
                    }
                    case 202:
                    case 203:
                    case 205:
                    case 155:
                    case 208: {
                        var openBrace = ts.findChildOfKind(n, 14, sourceFile);
                        var closeBrace = ts.findChildOfKind(n, 15, sourceFile);
                        addOutliningSpan(n, openBrace, closeBrace, autoCollapse(n));
                        break;
                    }
                    case 154:
                        var openBracket = ts.findChildOfKind(n, 18, sourceFile);
                        var closeBracket = ts.findChildOfKind(n, 19, sourceFile);
                        addOutliningSpan(n, openBracket, closeBracket, autoCollapse(n));
                        break;
                }
                depth++;
                ts.forEachChild(n, walk);
                depth--;
            }
            walk(sourceFile);
            return elements;
        }
        OutliningElementsCollector.collectElements = collectElements;
    })(OutliningElementsCollector = ts.OutliningElementsCollector || (ts.OutliningElementsCollector = {}));
})(ts || (ts = {}));
var ts;
(function (ts) {
    var NavigateTo;
    (function (NavigateTo) {
        function getNavigateToItems(program, cancellationToken, searchValue, maxResultCount) {
            var patternMatcher = ts.createPatternMatcher(searchValue);
            var rawItems = [];
            ts.forEach(program.getSourceFiles(), function (sourceFile) {
                cancellationToken.throwIfCancellationRequested();
                var nameToDeclarations = sourceFile.getNamedDeclarations();
                for (var name_23 in nameToDeclarations) {
                    var declarations = ts.getProperty(nameToDeclarations, name_23);
                    if (declarations) {
                        var matches = patternMatcher.getMatchesForLastSegmentOfPattern(name_23);
                        if (!matches) {
                            continue;
                        }
                        for (var _i = 0; _i < declarations.length; _i++) {
                            var declaration = declarations[_i];
                            if (patternMatcher.patternContainsDots) {
                                var containers = getContainers(declaration);
                                if (!containers) {
                                    return undefined;
                                }
                                matches = patternMatcher.getMatches(containers, name_23);
                                if (!matches) {
                                    continue;
                                }
                            }
                            var fileName = sourceFile.fileName;
                            var matchKind = bestMatchKind(matches);
                            rawItems.push({ name: name_23, fileName: fileName, matchKind: matchKind, isCaseSensitive: allMatchesAreCaseSensitive(matches), declaration: declaration });
                        }
                    }
                }
            });
            rawItems.sort(compareNavigateToItems);
            if (maxResultCount !== undefined) {
                rawItems = rawItems.slice(0, maxResultCount);
            }
            var items = ts.map(rawItems, createNavigateToItem);
            return items;
            function allMatchesAreCaseSensitive(matches) {
                ts.Debug.assert(matches.length > 0);
                for (var _i = 0; _i < matches.length; _i++) {
                    var match = matches[_i];
                    if (!match.isCaseSensitive) {
                        return false;
                    }
                }
                return true;
            }
            function getTextOfIdentifierOrLiteral(node) {
                if (node) {
                    if (node.kind === 65 ||
                        node.kind === 8 ||
                        node.kind === 7) {
                        return node.text;
                    }
                }
                return undefined;
            }
            function tryAddSingleDeclarationName(declaration, containers) {
                if (declaration && declaration.name) {
                    var text = getTextOfIdentifierOrLiteral(declaration.name);
                    if (text !== undefined) {
                        containers.unshift(text);
                    }
                    else if (declaration.name.kind === 128) {
                        return tryAddComputedPropertyName(declaration.name.expression, containers, true);
                    }
                    else {
                        return false;
                    }
                }
                return true;
            }
            function tryAddComputedPropertyName(expression, containers, includeLastPortion) {
                var text = getTextOfIdentifierOrLiteral(expression);
                if (text !== undefined) {
                    if (includeLastPortion) {
                        containers.unshift(text);
                    }
                    return true;
                }
                if (expression.kind === 156) {
                    var propertyAccess = expression;
                    if (includeLastPortion) {
                        containers.unshift(propertyAccess.name.text);
                    }
                    return tryAddComputedPropertyName(propertyAccess.expression, containers, true);
                }
                return false;
            }
            function getContainers(declaration) {
                var containers = [];
                if (declaration.name.kind === 128) {
                    if (!tryAddComputedPropertyName(declaration.name.expression, containers, false)) {
                        return undefined;
                    }
                }
                declaration = ts.getContainerNode(declaration);
                while (declaration) {
                    if (!tryAddSingleDeclarationName(declaration, containers)) {
                        return undefined;
                    }
                    declaration = ts.getContainerNode(declaration);
                }
                return containers;
            }
            function bestMatchKind(matches) {
                ts.Debug.assert(matches.length > 0);
                var bestMatchKind = ts.PatternMatchKind.camelCase;
                for (var _i = 0; _i < matches.length; _i++) {
                    var match = matches[_i];
                    var kind = match.kind;
                    if (kind < bestMatchKind) {
                        bestMatchKind = kind;
                    }
                }
                return bestMatchKind;
            }
            var baseSensitivity = { sensitivity: "base" };
            function compareNavigateToItems(i1, i2) {
                return i1.matchKind - i2.matchKind ||
                    i1.name.localeCompare(i2.name, undefined, baseSensitivity) ||
                    i1.name.localeCompare(i2.name);
            }
            function createNavigateToItem(rawItem) {
                var declaration = rawItem.declaration;
                var container = ts.getContainerNode(declaration);
                return {
                    name: rawItem.name,
                    kind: ts.getNodeKind(declaration),
                    kindModifiers: ts.getNodeModifiers(declaration),
                    matchKind: ts.PatternMatchKind[rawItem.matchKind],
                    isCaseSensitive: rawItem.isCaseSensitive,
                    fileName: rawItem.fileName,
                    textSpan: ts.createTextSpanFromBounds(declaration.getStart(), declaration.getEnd()),
                    containerName: container && container.name ? container.name.text : "",
                    containerKind: container && container.name ? ts.getNodeKind(container) : ""
                };
            }
        }
        NavigateTo.getNavigateToItems = getNavigateToItems;
    })(NavigateTo = ts.NavigateTo || (ts.NavigateTo = {}));
})(ts || (ts = {}));
/// <reference path='services.ts' />
var ts;
(function (ts) {
    var NavigationBar;
    (function (NavigationBar) {
        function getNavigationBarItems(sourceFile) {
            var hasGlobalNode = false;
            return getItemsWorker(getTopLevelNodes(sourceFile), createTopLevelItem);
            function getIndent(node) {
                var indent = hasGlobalNode ? 1 : 0;
                var current = node.parent;
                while (current) {
                    switch (current.kind) {
                        case 206:
                            do {
                                current = current.parent;
                            } while (current.kind === 206);
                        case 202:
                        case 205:
                        case 203:
                        case 201:
                            indent++;
                    }
                    current = current.parent;
                }
                return indent;
            }
            function getChildNodes(nodes) {
                var childNodes = [];
                function visit(node) {
                    switch (node.kind) {
                        case 181:
                            ts.forEach(node.declarationList.declarations, visit);
                            break;
                        case 151:
                        case 152:
                            ts.forEach(node.elements, visit);
                            break;
                        case 216:
                            if (node.exportClause) {
                                ts.forEach(node.exportClause.elements, visit);
                            }
                            break;
                        case 210:
                            var importClause = node.importClause;
                            if (importClause) {
                                if (importClause.name) {
                                    childNodes.push(importClause);
                                }
                                if (importClause.namedBindings) {
                                    if (importClause.namedBindings.kind === 212) {
                                        childNodes.push(importClause.namedBindings);
                                    }
                                    else {
                                        ts.forEach(importClause.namedBindings.elements, visit);
                                    }
                                }
                            }
                            break;
                        case 153:
                        case 199:
                            if (ts.isBindingPattern(node.name)) {
                                visit(node.name);
                                break;
                            }
                        case 202:
                        case 205:
                        case 203:
                        case 206:
                        case 201:
                        case 209:
                        case 214:
                        case 218:
                            childNodes.push(node);
                            break;
                    }
                }
                ts.forEach(nodes, visit);
                return sortNodes(childNodes);
            }
            function getTopLevelNodes(node) {
                var topLevelNodes = [];
                topLevelNodes.push(node);
                addTopLevelNodes(node.statements, topLevelNodes);
                return topLevelNodes;
            }
            function sortNodes(nodes) {
                return nodes.slice(0).sort(function (n1, n2) {
                    if (n1.name && n2.name) {
                        return ts.getPropertyNameForPropertyNameNode(n1.name).localeCompare(ts.getPropertyNameForPropertyNameNode(n2.name));
                    }
                    else if (n1.name) {
                        return 1;
                    }
                    else if (n2.name) {
                        return -1;
                    }
                    else {
                        return n1.kind - n2.kind;
                    }
                });
            }
            function addTopLevelNodes(nodes, topLevelNodes) {
                nodes = sortNodes(nodes);
                for (var _i = 0; _i < nodes.length; _i++) {
                    var node = nodes[_i];
                    switch (node.kind) {
                        case 202:
                        case 205:
                        case 203:
                            topLevelNodes.push(node);
                            break;
                        case 206:
                            var moduleDeclaration = node;
                            topLevelNodes.push(node);
                            addTopLevelNodes(getInnermostModule(moduleDeclaration).body.statements, topLevelNodes);
                            break;
                        case 201:
                            var functionDeclaration = node;
                            if (isTopLevelFunctionDeclaration(functionDeclaration)) {
                                topLevelNodes.push(node);
                                addTopLevelNodes(functionDeclaration.body.statements, topLevelNodes);
                            }
                            break;
                    }
                }
            }
            function isTopLevelFunctionDeclaration(functionDeclaration) {
                if (functionDeclaration.kind === 201) {
                    if (functionDeclaration.body && functionDeclaration.body.kind === 180) {
                        if (ts.forEach(functionDeclaration.body.statements, function (s) { return s.kind === 201 && !isEmpty(s.name.text); })) {
                            return true;
                        }
                        if (!ts.isFunctionBlock(functionDeclaration.parent)) {
                            return true;
                        }
                    }
                }
                return false;
            }
            function getItemsWorker(nodes, createItem) {
                var items = [];
                var keyToItem = {};
                for (var _i = 0; _i < nodes.length; _i++) {
                    var child = nodes[_i];
                    var item = createItem(child);
                    if (item !== undefined) {
                        if (item.text.length > 0) {
                            var key = item.text + "-" + item.kind + "-" + item.indent;
                            var itemWithSameName = keyToItem[key];
                            if (itemWithSameName) {
                                merge(itemWithSameName, item);
                            }
                            else {
                                keyToItem[key] = item;
                                items.push(item);
                            }
                        }
                    }
                }
                return items;
            }
            function merge(target, source) {
                target.spans.push.apply(target.spans, source.spans);
                if (source.childItems) {
                    if (!target.childItems) {
                        target.childItems = [];
                    }
                    outer: for (var _i = 0, _a = source.childItems; _i < _a.length; _i++) {
                        var sourceChild = _a[_i];
                        for (var _b = 0, _c = target.childItems; _b < _c.length; _b++) {
                            var targetChild = _c[_b];
                            if (targetChild.text === sourceChild.text && targetChild.kind === sourceChild.kind) {
                                merge(targetChild, sourceChild);
                                continue outer;
                            }
                        }
                        target.childItems.push(sourceChild);
                    }
                }
            }
            function createChildItem(node) {
                switch (node.kind) {
                    case 130:
                        if (ts.isBindingPattern(node.name)) {
                            break;
                        }
                        if ((node.flags & 499) === 0) {
                            return undefined;
                        }
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberVariableElement);
                    case 135:
                    case 134:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberFunctionElement);
                    case 137:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberGetAccessorElement);
                    case 138:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberSetAccessorElement);
                    case 141:
                        return createItem(node, "[]", ts.ScriptElementKind.indexSignatureElement);
                    case 227:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberVariableElement);
                    case 139:
                        return createItem(node, "()", ts.ScriptElementKind.callSignatureElement);
                    case 140:
                        return createItem(node, "new()", ts.ScriptElementKind.constructSignatureElement);
                    case 133:
                    case 132:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.memberVariableElement);
                    case 201:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.functionElement);
                    case 199:
                    case 153:
                        var variableDeclarationNode;
                        var name_24;
                        if (node.kind === 153) {
                            name_24 = node.name;
                            variableDeclarationNode = node;
                            while (variableDeclarationNode && variableDeclarationNode.kind !== 199) {
                                variableDeclarationNode = variableDeclarationNode.parent;
                            }
                            ts.Debug.assert(variableDeclarationNode !== undefined);
                        }
                        else {
                            ts.Debug.assert(!ts.isBindingPattern(node.name));
                            variableDeclarationNode = node;
                            name_24 = node.name;
                        }
                        if (ts.isConst(variableDeclarationNode)) {
                            return createItem(node, getTextOfNode(name_24), ts.ScriptElementKind.constElement);
                        }
                        else if (ts.isLet(variableDeclarationNode)) {
                            return createItem(node, getTextOfNode(name_24), ts.ScriptElementKind.letElement);
                        }
                        else {
                            return createItem(node, getTextOfNode(name_24), ts.ScriptElementKind.variableElement);
                        }
                    case 136:
                        return createItem(node, "constructor", ts.ScriptElementKind.constructorImplementationElement);
                    case 218:
                    case 214:
                    case 209:
                    case 211:
                    case 212:
                        return createItem(node, getTextOfNode(node.name), ts.ScriptElementKind.alias);
                }
                return undefined;
                function createItem(node, name, scriptElementKind) {
                    return getNavigationBarItem(name, scriptElementKind, ts.getNodeModifiers(node), [getNodeSpan(node)]);
                }
            }
            function isEmpty(text) {
                return !text || text.trim() === "";
            }
            function getNavigationBarItem(text, kind, kindModifiers, spans, childItems, indent) {
                if (childItems === void 0) { childItems = []; }
                if (indent === void 0) { indent = 0; }
                if (isEmpty(text)) {
                    return undefined;
                }
                return {
                    text: text,
                    kind: kind,
                    kindModifiers: kindModifiers,
                    spans: spans,
                    childItems: childItems,
                    indent: indent,
                    bolded: false,
                    grayed: false
                };
            }
            function createTopLevelItem(node) {
                switch (node.kind) {
                    case 228:
                        return createSourceFileItem(node);
                    case 202:
                        return createClassItem(node);
                    case 205:
                        return createEnumItem(node);
                    case 203:
                        return createIterfaceItem(node);
                    case 206:
                        return createModuleItem(node);
                    case 201:
                        return createFunctionItem(node);
                }
                return undefined;
                function getModuleName(moduleDeclaration) {
                    if (moduleDeclaration.name.kind === 8) {
                        return getTextOfNode(moduleDeclaration.name);
                    }
                    var result = [];
                    result.push(moduleDeclaration.name.text);
                    while (moduleDeclaration.body && moduleDeclaration.body.kind === 206) {
                        moduleDeclaration = moduleDeclaration.body;
                        result.push(moduleDeclaration.name.text);
                    }
                    return result.join(".");
                }
                function createModuleItem(node) {
                    var moduleName = getModuleName(node);
                    var childItems = getItemsWorker(getChildNodes(getInnermostModule(node).body.statements), createChildItem);
                    return getNavigationBarItem(moduleName, ts.ScriptElementKind.moduleElement, ts.getNodeModifiers(node), [getNodeSpan(node)], childItems, getIndent(node));
                }
                function createFunctionItem(node) {
                    if (node.body && node.body.kind === 180) {
                        var childItems = getItemsWorker(sortNodes(node.body.statements), createChildItem);
                        return getNavigationBarItem(!node.name ? "default" : node.name.text, ts.ScriptElementKind.functionElement, ts.getNodeModifiers(node), [getNodeSpan(node)], childItems, getIndent(node));
                    }
                    return undefined;
                }
                function createSourceFileItem(node) {
                    var childItems = getItemsWorker(getChildNodes(node.statements), createChildItem);
                    if (childItems === undefined || childItems.length === 0) {
                        return undefined;
                    }
                    hasGlobalNode = true;
                    var rootName = ts.isExternalModule(node)
                        ? "\"" + ts.escapeString(ts.getBaseFileName(ts.removeFileExtension(ts.normalizePath(node.fileName)))) + "\""
                        : "<global>";
                    return getNavigationBarItem(rootName, ts.ScriptElementKind.moduleElement, ts.ScriptElementKindModifier.none, [getNodeSpan(node)], childItems);
                }
                function createClassItem(node) {
                    var childItems;
                    if (node.members) {
                        var constructor = ts.forEach(node.members, function (member) {
                            return member.kind === 136 && member;
                        });
                        var nodes = removeDynamicallyNamedProperties(node);
                        if (constructor) {
                            nodes.push.apply(nodes, ts.filter(constructor.parameters, function (p) { return !ts.isBindingPattern(p.name); }));
                        }
                        childItems = getItemsWorker(sortNodes(nodes), createChildItem);
                    }
                    var nodeName = !node.name ? "default" : node.name.text;
                    return getNavigationBarItem(nodeName, ts.ScriptElementKind.classElement, ts.getNodeModifiers(node), [getNodeSpan(node)], childItems, getIndent(node));
                }
                function createEnumItem(node) {
                    var childItems = getItemsWorker(sortNodes(removeComputedProperties(node)), createChildItem);
                    return getNavigationBarItem(node.name.text, ts.ScriptElementKind.enumElement, ts.getNodeModifiers(node), [getNodeSpan(node)], childItems, getIndent(node));
                }
                function createIterfaceItem(node) {
                    var childItems = getItemsWorker(sortNodes(removeDynamicallyNamedProperties(node)), createChildItem);
                    return getNavigationBarItem(node.name.text, ts.ScriptElementKind.interfaceElement, ts.getNodeModifiers(node), [getNodeSpan(node)], childItems, getIndent(node));
                }
            }
            function removeComputedProperties(node) {
                return ts.filter(node.members, function (member) { return member.name === undefined || member.name.kind !== 128; });
            }
            function removeDynamicallyNamedProperties(node) {
                return ts.filter(node.members, function (member) { return !ts.hasDynamicName(member); });
            }
            function getInnermostModule(node) {
                while (node.body.kind === 206) {
                    node = node.body;
                }
                return node;
            }
            function getNodeSpan(node) {
                return node.kind === 228
                    ? ts.createTextSpanFromBounds(node.getFullStart(), node.getEnd())
                    : ts.createTextSpanFromBounds(node.getStart(), node.getEnd());
            }
            function getTextOfNode(node) {
                return ts.getTextOfNodeFromSourceText(sourceFile.text, node);
            }
        }
        NavigationBar.getNavigationBarItems = getNavigationBarItems;
    })(NavigationBar = ts.NavigationBar || (ts.NavigationBar = {}));
})(ts || (ts = {}));
var ts;
(function (ts) {
    (function (PatternMatchKind) {
        PatternMatchKind[PatternMatchKind["exact"] = 0] = "exact";
        PatternMatchKind[PatternMatchKind["prefix"] = 1] = "prefix";
        PatternMatchKind[PatternMatchKind["substring"] = 2] = "substring";
        PatternMatchKind[PatternMatchKind["camelCase"] = 3] = "camelCase";
    })(ts.PatternMatchKind || (ts.PatternMatchKind = {}));
    var PatternMatchKind = ts.PatternMatchKind;
    function createPatternMatch(kind, punctuationStripped, isCaseSensitive, camelCaseWeight) {
        return {
            kind: kind,
            punctuationStripped: punctuationStripped,
            isCaseSensitive: isCaseSensitive,
            camelCaseWeight: camelCaseWeight
        };
    }
    function createPatternMatcher(pattern) {
        var stringToWordSpans = {};
        pattern = pattern.trim();
        var fullPatternSegment = createSegment(pattern);
        var dotSeparatedSegments = pattern.split(".").map(function (p) { return createSegment(p.trim()); });
        var invalidPattern = dotSeparatedSegments.length === 0 || ts.forEach(dotSeparatedSegments, segmentIsInvalid);
        return {
            getMatches: getMatches,
            getMatchesForLastSegmentOfPattern: getMatchesForLastSegmentOfPattern,
            patternContainsDots: dotSeparatedSegments.length > 1
        };
        function skipMatch(candidate) {
            return invalidPattern || !candidate;
        }
        function getMatchesForLastSegmentOfPattern(candidate) {
            if (skipMatch(candidate)) {
                return undefined;
            }
            return matchSegment(candidate, ts.lastOrUndefined(dotSeparatedSegments));
        }
        function getMatches(candidateContainers, candidate) {
            if (skipMatch(candidate)) {
                return undefined;
            }
            var candidateMatch = matchSegment(candidate, ts.lastOrUndefined(dotSeparatedSegments));
            if (!candidateMatch) {
                return undefined;
            }
            candidateContainers = candidateContainers || [];
            if (dotSeparatedSegments.length - 1 > candidateContainers.length) {
                return undefined;
            }
            var totalMatch = candidateMatch;
            for (var i = dotSeparatedSegments.length - 2, j = candidateContainers.length - 1; i >= 0; i--, j--) {
                var segment = dotSeparatedSegments[i];
                var containerName = candidateContainers[j];
                var containerMatch = matchSegment(containerName, segment);
                if (!containerMatch) {
                    return undefined;
                }
                ts.addRange(totalMatch, containerMatch);
            }
            return totalMatch;
        }
        function getWordSpans(word) {
            if (!ts.hasProperty(stringToWordSpans, word)) {
                stringToWordSpans[word] = breakIntoWordSpans(word);
            }
            return stringToWordSpans[word];
        }
        function matchTextChunk(candidate, chunk, punctuationStripped) {
            var index = indexOfIgnoringCase(candidate, chunk.textLowerCase);
            if (index === 0) {
                if (chunk.text.length === candidate.length) {
                    return createPatternMatch(PatternMatchKind.exact, punctuationStripped, candidate === chunk.text);
                }
                else {
                    return createPatternMatch(PatternMatchKind.prefix, punctuationStripped, startsWith(candidate, chunk.text));
                }
            }
            var isLowercase = chunk.isLowerCase;
            if (isLowercase) {
                if (index > 0) {
                    var wordSpans = getWordSpans(candidate);
                    for (var _i = 0; _i < wordSpans.length; _i++) {
                        var span = wordSpans[_i];
                        if (partStartsWith(candidate, span, chunk.text, true)) {
                            return createPatternMatch(PatternMatchKind.substring, punctuationStripped, partStartsWith(candidate, span, chunk.text, false));
                        }
                    }
                }
            }
            else {
                if (candidate.indexOf(chunk.text) > 0) {
                    return createPatternMatch(PatternMatchKind.substring, punctuationStripped, true);
                }
            }
            if (!isLowercase) {
                if (chunk.characterSpans.length > 0) {
                    var candidateParts = getWordSpans(candidate);
                    var camelCaseWeight = tryCamelCaseMatch(candidate, candidateParts, chunk, false);
                    if (camelCaseWeight !== undefined) {
                        return createPatternMatch(PatternMatchKind.camelCase, punctuationStripped, true, camelCaseWeight);
                    }
                    camelCaseWeight = tryCamelCaseMatch(candidate, candidateParts, chunk, true);
                    if (camelCaseWeight !== undefined) {
                        return createPatternMatch(PatternMatchKind.camelCase, punctuationStripped, false, camelCaseWeight);
                    }
                }
            }
            if (isLowercase) {
                if (chunk.text.length < candidate.length) {
                    if (index > 0 && isUpperCaseLetter(candidate.charCodeAt(index))) {
                        return createPatternMatch(PatternMatchKind.substring, punctuationStripped, false);
                    }
                }
            }
            return undefined;
        }
        function containsSpaceOrAsterisk(text) {
            for (var i = 0; i < text.length; i++) {
                var ch = text.charCodeAt(i);
                if (ch === 32 || ch === 42) {
                    return true;
                }
            }
            return false;
        }
        function matchSegment(candidate, segment) {
            if (!containsSpaceOrAsterisk(segment.totalTextChunk.text)) {
                var match = matchTextChunk(candidate, segment.totalTextChunk, false);
                if (match) {
                    return [match];
                }
            }
            var subWordTextChunks = segment.subWordTextChunks;
            var matches = undefined;
            for (var _i = 0; _i < subWordTextChunks.length; _i++) {
                var subWordTextChunk = subWordTextChunks[_i];
                var result = matchTextChunk(candidate, subWordTextChunk, true);
                if (!result) {
                    return undefined;
                }
                matches = matches || [];
                matches.push(result);
            }
            return matches;
        }
        function partStartsWith(candidate, candidateSpan, pattern, ignoreCase, patternSpan) {
            var patternPartStart = patternSpan ? patternSpan.start : 0;
            var patternPartLength = patternSpan ? patternSpan.length : pattern.length;
            if (patternPartLength > candidateSpan.length) {
                return false;
            }
            if (ignoreCase) {
                for (var i = 0; i < patternPartLength; i++) {
                    var ch1 = pattern.charCodeAt(patternPartStart + i);
                    var ch2 = candidate.charCodeAt(candidateSpan.start + i);
                    if (toLowerCase(ch1) !== toLowerCase(ch2)) {
                        return false;
                    }
                }
            }
            else {
                for (var i = 0; i < patternPartLength; i++) {
                    var ch1 = pattern.charCodeAt(patternPartStart + i);
                    var ch2 = candidate.charCodeAt(candidateSpan.start + i);
                    if (ch1 !== ch2) {
                        return false;
                    }
                }
            }
            return true;
        }
        function tryCamelCaseMatch(candidate, candidateParts, chunk, ignoreCase) {
            var chunkCharacterSpans = chunk.characterSpans;
            var currentCandidate = 0;
            var currentChunkSpan = 0;
            var firstMatch = undefined;
            var contiguous = undefined;
            while (true) {
                if (currentChunkSpan === chunkCharacterSpans.length) {
                    var weight = 0;
                    if (contiguous) {
                        weight += 1;
                    }
                    if (firstMatch === 0) {
                        weight += 2;
                    }
                    return weight;
                }
                else if (currentCandidate === candidateParts.length) {
                    return undefined;
                }
                var candidatePart = candidateParts[currentCandidate];
                var gotOneMatchThisCandidate = false;
                for (; currentChunkSpan < chunkCharacterSpans.length; currentChunkSpan++) {
                    var chunkCharacterSpan = chunkCharacterSpans[currentChunkSpan];
                    if (gotOneMatchThisCandidate) {
                        if (!isUpperCaseLetter(chunk.text.charCodeAt(chunkCharacterSpans[currentChunkSpan - 1].start)) ||
                            !isUpperCaseLetter(chunk.text.charCodeAt(chunkCharacterSpans[currentChunkSpan].start))) {
                            break;
                        }
                    }
                    if (!partStartsWith(candidate, candidatePart, chunk.text, ignoreCase, chunkCharacterSpan)) {
                        break;
                    }
                    gotOneMatchThisCandidate = true;
                    firstMatch = firstMatch === undefined ? currentCandidate : firstMatch;
                    contiguous = contiguous === undefined ? true : contiguous;
                    candidatePart = ts.createTextSpan(candidatePart.start + chunkCharacterSpan.length, candidatePart.length - chunkCharacterSpan.length);
                }
                if (!gotOneMatchThisCandidate && contiguous !== undefined) {
                    contiguous = false;
                }
                currentCandidate++;
            }
        }
    }
    ts.createPatternMatcher = createPatternMatcher;
    function patternMatchCompareTo(match1, match2) {
        return compareType(match1, match2) ||
            compareCamelCase(match1, match2) ||
            compareCase(match1, match2) ||
            comparePunctuation(match1, match2);
    }
    function comparePunctuation(result1, result2) {
        if (result1.punctuationStripped !== result2.punctuationStripped) {
            return result1.punctuationStripped ? 1 : -1;
        }
        return 0;
    }
    function compareCase(result1, result2) {
        if (result1.isCaseSensitive !== result2.isCaseSensitive) {
            return result1.isCaseSensitive ? -1 : 1;
        }
        return 0;
    }
    function compareType(result1, result2) {
        return result1.kind - result2.kind;
    }
    function compareCamelCase(result1, result2) {
        if (result1.kind === PatternMatchKind.camelCase && result2.kind === PatternMatchKind.camelCase) {
            return result2.camelCaseWeight - result1.camelCaseWeight;
        }
        return 0;
    }
    function createSegment(text) {
        return {
            totalTextChunk: createTextChunk(text),
            subWordTextChunks: breakPatternIntoTextChunks(text)
        };
    }
    function segmentIsInvalid(segment) {
        return segment.subWordTextChunks.length === 0;
    }
    function isUpperCaseLetter(ch) {
        if (ch >= 65 && ch <= 90) {
            return true;
        }
        if (ch < 127 || !ts.isUnicodeIdentifierStart(ch, 2)) {
            return false;
        }
        var str = String.fromCharCode(ch);
        return str === str.toUpperCase();
    }
    function isLowerCaseLetter(ch) {
        if (ch >= 97 && ch <= 122) {
            return true;
        }
        if (ch < 127 || !ts.isUnicodeIdentifierStart(ch, 2)) {
            return false;
        }
        var str = String.fromCharCode(ch);
        return str === str.toLowerCase();
    }
    function containsUpperCaseLetter(string) {
        for (var i = 0, n = string.length; i < n; i++) {
            if (isUpperCaseLetter(string.charCodeAt(i))) {
                return true;
            }
        }
        return false;
    }
    function startsWith(string, search) {
        for (var i = 0, n = search.length; i < n; i++) {
            if (string.charCodeAt(i) !== search.charCodeAt(i)) {
                return false;
            }
        }
        return true;
    }
    function indexOfIgnoringCase(string, value) {
        for (var i = 0, n = string.length - value.length; i <= n; i++) {
            if (startsWithIgnoringCase(string, value, i)) {
                return i;
            }
        }
        return -1;
    }
    function startsWithIgnoringCase(string, value, start) {
        for (var i = 0, n = value.length; i < n; i++) {
            var ch1 = toLowerCase(string.charCodeAt(i + start));
            var ch2 = value.charCodeAt(i);
            if (ch1 !== ch2) {
                return false;
            }
        }
        return true;
    }
    function toLowerCase(ch) {
        if (ch >= 65 && ch <= 90) {
            return 97 + (ch - 65);
        }
        if (ch < 127) {
            return ch;
        }
        return String.fromCharCode(ch).toLowerCase().charCodeAt(0);
    }
    function isDigit(ch) {
        return ch >= 48 && ch <= 57;
    }
    function isWordChar(ch) {
        return isUpperCaseLetter(ch) || isLowerCaseLetter(ch) || isDigit(ch) || ch === 95 || ch === 36;
    }
    function breakPatternIntoTextChunks(pattern) {
        var result = [];
        var wordStart = 0;
        var wordLength = 0;
        for (var i = 0; i < pattern.length; i++) {
            var ch = pattern.charCodeAt(i);
            if (isWordChar(ch)) {
                if (wordLength++ === 0) {
                    wordStart = i;
                }
            }
            else {
                if (wordLength > 0) {
                    result.push(createTextChunk(pattern.substr(wordStart, wordLength)));
                    wordLength = 0;
                }
            }
        }
        if (wordLength > 0) {
            result.push(createTextChunk(pattern.substr(wordStart, wordLength)));
        }
        return result;
    }
    function createTextChunk(text) {
        var textLowerCase = text.toLowerCase();
        return {
            text: text,
            textLowerCase: textLowerCase,
            isLowerCase: text === textLowerCase,
            characterSpans: breakIntoCharacterSpans(text)
        };
    }
    function breakIntoCharacterSpans(identifier) {
        return breakIntoSpans(identifier, false);
    }
    ts.breakIntoCharacterSpans = breakIntoCharacterSpans;
    function breakIntoWordSpans(identifier) {
        return breakIntoSpans(identifier, true);
    }
    ts.breakIntoWordSpans = breakIntoWordSpans;
    function breakIntoSpans(identifier, word) {
        var result = [];
        var wordStart = 0;
        for (var i = 1, n = identifier.length; i < n; i++) {
            var lastIsDigit = isDigit(identifier.charCodeAt(i - 1));
            var currentIsDigit = isDigit(identifier.charCodeAt(i));
            var hasTransitionFromLowerToUpper = transitionFromLowerToUpper(identifier, word, i);
            var hasTransitionFromUpperToLower = transitionFromUpperToLower(identifier, word, i, wordStart);
            if (charIsPunctuation(identifier.charCodeAt(i - 1)) ||
                charIsPunctuation(identifier.charCodeAt(i)) ||
                lastIsDigit != currentIsDigit ||
                hasTransitionFromLowerToUpper ||
                hasTransitionFromUpperToLower) {
                if (!isAllPunctuation(identifier, wordStart, i)) {
                    result.push(ts.createTextSpan(wordStart, i - wordStart));
                }
                wordStart = i;
            }
        }
        if (!isAllPunctuation(identifier, wordStart, identifier.length)) {
            result.push(ts.createTextSpan(wordStart, identifier.length - wordStart));
        }
        return result;
    }
    function charIsPunctuation(ch) {
        switch (ch) {
            case 33:
            case 34:
            case 35:
            case 37:
            case 38:
            case 39:
            case 40:
            case 41:
            case 42:
            case 44:
            case 45:
            case 46:
            case 47:
            case 58:
            case 59:
            case 63:
            case 64:
            case 91:
            case 92:
            case 93:
            case 95:
            case 123:
            case 125:
                return true;
        }
        return false;
    }
    function isAllPunctuation(identifier, start, end) {
        for (var i = start; i < end; i++) {
            var ch = identifier.charCodeAt(i);
            if (!charIsPunctuation(ch) || ch === 95 || ch === 36) {
                return false;
            }
        }
        return true;
    }
    function transitionFromUpperToLower(identifier, word, index, wordStart) {
        if (word) {
            if (index != wordStart &&
                index + 1 < identifier.length) {
                var currentIsUpper = isUpperCaseLetter(identifier.charCodeAt(index));
                var nextIsLower = isLowerCaseLetter(identifier.charCodeAt(index + 1));
                if (currentIsUpper && nextIsLower) {
                    for (var i = wordStart; i < index; i++) {
                        if (!isUpperCaseLetter(identifier.charCodeAt(i))) {
                            return false;
                        }
                    }
                    return true;
                }
            }
        }
        return false;
    }
    function transitionFromLowerToUpper(identifier, word, index) {
        var lastIsUpper = isUpperCaseLetter(identifier.charCodeAt(index - 1));
        var currentIsUpper = isUpperCaseLetter(identifier.charCodeAt(index));
        var transition = word
            ? (currentIsUpper && !lastIsUpper)
            : currentIsUpper;
        return transition;
    }
})(ts || (ts = {}));
///<reference path='services.ts' />
var ts;
(function (ts) {
    var SignatureHelp;
    (function (SignatureHelp) {
        var emptyArray = [];
        function getSignatureHelpItems(program, sourceFile, position, cancellationToken) {
            var typeChecker = program.getTypeChecker();
            var startingToken = ts.findTokenOnLeftOfPosition(sourceFile, position);
            if (!startingToken) {
                return undefined;
            }
            var argumentInfo = getContainingArgumentInfo(startingToken);
            cancellationToken.throwIfCancellationRequested();
            if (!argumentInfo) {
                return undefined;
            }
            var call = argumentInfo.invocation;
            var candidates = [];
            var resolvedSignature = typeChecker.getResolvedSignature(call, candidates);
            cancellationToken.throwIfCancellationRequested();
            if (!candidates.length) {
                if (ts.isJavaScript(sourceFile.fileName)) {
                    return createJavaScriptSignatureHelpItems(argumentInfo);
                }
                return undefined;
            }
            return createSignatureHelpItems(candidates, resolvedSignature, argumentInfo);
            function createJavaScriptSignatureHelpItems(argumentInfo) {
                if (argumentInfo.invocation.kind !== 158) {
                    return undefined;
                }
                var callExpression = argumentInfo.invocation;
                var expression = callExpression.expression;
                var name = expression.kind === 65
                    ? expression
                    : expression.kind === 156
                        ? expression.name
                        : undefined;
                if (!name || !name.text) {
                    return undefined;
                }
                var typeChecker = program.getTypeChecker();
                for (var _i = 0, _a = program.getSourceFiles(); _i < _a.length; _i++) {
                    var sourceFile_1 = _a[_i];
                    var nameToDeclarations = sourceFile_1.getNamedDeclarations();
                    var declarations = ts.getProperty(nameToDeclarations, name.text);
                    if (declarations) {
                        for (var _b = 0; _b < declarations.length; _b++) {
                            var declaration = declarations[_b];
                            var symbol = declaration.symbol;
                            if (symbol) {
                                var type = typeChecker.getTypeOfSymbolAtLocation(symbol, declaration);
                                if (type) {
                                    var callSignatures = type.getCallSignatures();
                                    if (callSignatures && callSignatures.length) {
                                        return createSignatureHelpItems(callSignatures, callSignatures[0], argumentInfo);
                                    }
                                }
                            }
                        }
                    }
                }
            }
            function getImmediatelyContainingArgumentInfo(node) {
                if (node.parent.kind === 158 || node.parent.kind === 159) {
                    var callExpression = node.parent;
                    if (node.kind === 24 ||
                        node.kind === 16) {
                        var list = getChildListThatStartsWithOpenerToken(callExpression, node, sourceFile);
                        var isTypeArgList = callExpression.typeArguments && callExpression.typeArguments.pos === list.pos;
                        ts.Debug.assert(list !== undefined);
                        return {
                            kind: isTypeArgList ? 0 : 1,
                            invocation: callExpression,
                            argumentsSpan: getApplicableSpanForArguments(list),
                            argumentIndex: 0,
                            argumentCount: getArgumentCount(list)
                        };
                    }
                    var listItemInfo = ts.findListItemInfo(node);
                    if (listItemInfo) {
                        var list = listItemInfo.list;
                        var isTypeArgList = callExpression.typeArguments && callExpression.typeArguments.pos === list.pos;
                        var argumentIndex = getArgumentIndex(list, node);
                        var argumentCount = getArgumentCount(list);
                        ts.Debug.assert(argumentIndex === 0 || argumentIndex < argumentCount, "argumentCount < argumentIndex, " + argumentCount + " < " + argumentIndex);
                        return {
                            kind: isTypeArgList ? 0 : 1,
                            invocation: callExpression,
                            argumentsSpan: getApplicableSpanForArguments(list),
                            argumentIndex: argumentIndex,
                            argumentCount: argumentCount
                        };
                    }
                }
                else if (node.kind === 10 && node.parent.kind === 160) {
                    if (ts.isInsideTemplateLiteral(node, position)) {
                        return getArgumentListInfoForTemplate(node.parent, 0);
                    }
                }
                else if (node.kind === 11 && node.parent.parent.kind === 160) {
                    var templateExpression = node.parent;
                    var tagExpression = templateExpression.parent;
                    ts.Debug.assert(templateExpression.kind === 172);
                    var argumentIndex = ts.isInsideTemplateLiteral(node, position) ? 0 : 1;
                    return getArgumentListInfoForTemplate(tagExpression, argumentIndex);
                }
                else if (node.parent.kind === 178 && node.parent.parent.parent.kind === 160) {
                    var templateSpan = node.parent;
                    var templateExpression = templateSpan.parent;
                    var tagExpression = templateExpression.parent;
                    ts.Debug.assert(templateExpression.kind === 172);
                    if (node.kind === 13 && !ts.isInsideTemplateLiteral(node, position)) {
                        return undefined;
                    }
                    var spanIndex = templateExpression.templateSpans.indexOf(templateSpan);
                    var argumentIndex = getArgumentIndexForTemplatePiece(spanIndex, node);
                    return getArgumentListInfoForTemplate(tagExpression, argumentIndex);
                }
                return undefined;
            }
            function getArgumentIndex(argumentsList, node) {
                var argumentIndex = 0;
                var listChildren = argumentsList.getChildren();
                for (var _i = 0; _i < listChildren.length; _i++) {
                    var child = listChildren[_i];
                    if (child === node) {
                        break;
                    }
                    if (child.kind !== 23) {
                        argumentIndex++;
                    }
                }
                return argumentIndex;
            }
            function getArgumentCount(argumentsList) {
                var listChildren = argumentsList.getChildren();
                var argumentCount = ts.countWhere(listChildren, function (arg) { return arg.kind !== 23; });
                if (listChildren.length > 0 && ts.lastOrUndefined(listChildren).kind === 23) {
                    argumentCount++;
                }
                return argumentCount;
            }
            function getArgumentIndexForTemplatePiece(spanIndex, node) {
                ts.Debug.assert(position >= node.getStart(), "Assumed 'position' could not occur before node.");
                if (ts.isTemplateLiteralKind(node.kind)) {
                    if (ts.isInsideTemplateLiteral(node, position)) {
                        return 0;
                    }
                    return spanIndex + 2;
                }
                return spanIndex + 1;
            }
            function getArgumentListInfoForTemplate(tagExpression, argumentIndex) {
                var argumentCount = tagExpression.template.kind === 10
                    ? 1
                    : tagExpression.template.templateSpans.length + 1;
                ts.Debug.assert(argumentIndex === 0 || argumentIndex < argumentCount, "argumentCount < argumentIndex, " + argumentCount + " < " + argumentIndex);
                return {
                    kind: 2,
                    invocation: tagExpression,
                    argumentsSpan: getApplicableSpanForTaggedTemplate(tagExpression),
                    argumentIndex: argumentIndex,
                    argumentCount: argumentCount
                };
            }
            function getApplicableSpanForArguments(argumentsList) {
                var applicableSpanStart = argumentsList.getFullStart();
                var applicableSpanEnd = ts.skipTrivia(sourceFile.text, argumentsList.getEnd(), false);
                return ts.createTextSpan(applicableSpanStart, applicableSpanEnd - applicableSpanStart);
            }
            function getApplicableSpanForTaggedTemplate(taggedTemplate) {
                var template = taggedTemplate.template;
                var applicableSpanStart = template.getStart();
                var applicableSpanEnd = template.getEnd();
                if (template.kind === 172) {
                    var lastSpan = ts.lastOrUndefined(template.templateSpans);
                    if (lastSpan.literal.getFullWidth() === 0) {
                        applicableSpanEnd = ts.skipTrivia(sourceFile.text, applicableSpanEnd, false);
                    }
                }
                return ts.createTextSpan(applicableSpanStart, applicableSpanEnd - applicableSpanStart);
            }
            function getContainingArgumentInfo(node) {
                for (var n = node; n.kind !== 228; n = n.parent) {
                    if (ts.isFunctionBlock(n)) {
                        return undefined;
                    }
                    if (n.pos < n.parent.pos || n.end > n.parent.end) {
                        ts.Debug.fail("Node of kind " + n.kind + " is not a subspan of its parent of kind " + n.parent.kind);
                    }
                    var argumentInfo_1 = getImmediatelyContainingArgumentInfo(n);
                    if (argumentInfo_1) {
                        return argumentInfo_1;
                    }
                }
                return undefined;
            }
            function getChildListThatStartsWithOpenerToken(parent, openerToken, sourceFile) {
                var children = parent.getChildren(sourceFile);
                var indexOfOpenerToken = children.indexOf(openerToken);
                ts.Debug.assert(indexOfOpenerToken >= 0 && children.length > indexOfOpenerToken + 1);
                return children[indexOfOpenerToken + 1];
            }
            function selectBestInvalidOverloadIndex(candidates, argumentCount) {
                var maxParamsSignatureIndex = -1;
                var maxParams = -1;
                for (var i = 0; i < candidates.length; i++) {
                    var candidate = candidates[i];
                    if (candidate.hasRestParameter || candidate.parameters.length >= argumentCount) {
                        return i;
                    }
                    if (candidate.parameters.length > maxParams) {
                        maxParams = candidate.parameters.length;
                        maxParamsSignatureIndex = i;
                    }
                }
                return maxParamsSignatureIndex;
            }
            function createSignatureHelpItems(candidates, bestSignature, argumentListInfo) {
                var applicableSpan = argumentListInfo.argumentsSpan;
                var isTypeParameterList = argumentListInfo.kind === 0;
                var invocation = argumentListInfo.invocation;
                var callTarget = ts.getInvokedExpression(invocation);
                var callTargetSymbol = typeChecker.getSymbolAtLocation(callTarget);
                var callTargetDisplayParts = callTargetSymbol && ts.symbolToDisplayParts(typeChecker, callTargetSymbol, undefined, undefined);
                var items = ts.map(candidates, function (candidateSignature) {
                    var signatureHelpParameters;
                    var prefixDisplayParts = [];
                    var suffixDisplayParts = [];
                    if (callTargetDisplayParts) {
                        prefixDisplayParts.push.apply(prefixDisplayParts, callTargetDisplayParts);
                    }
                    if (isTypeParameterList) {
                        prefixDisplayParts.push(ts.punctuationPart(24));
                        var typeParameters = candidateSignature.typeParameters;
                        signatureHelpParameters = typeParameters && typeParameters.length > 0 ? ts.map(typeParameters, createSignatureHelpParameterForTypeParameter) : emptyArray;
                        suffixDisplayParts.push(ts.punctuationPart(25));
                        var parameterParts = ts.mapToDisplayParts(function (writer) {
                            return typeChecker.getSymbolDisplayBuilder().buildDisplayForParametersAndDelimiters(candidateSignature.parameters, writer, invocation);
                        });
                        suffixDisplayParts.push.apply(suffixDisplayParts, parameterParts);
                    }
                    else {
                        var typeParameterParts = ts.mapToDisplayParts(function (writer) {
                            return typeChecker.getSymbolDisplayBuilder().buildDisplayForTypeParametersAndDelimiters(candidateSignature.typeParameters, writer, invocation);
                        });
                        prefixDisplayParts.push.apply(prefixDisplayParts, typeParameterParts);
                        prefixDisplayParts.push(ts.punctuationPart(16));
                        var parameters = candidateSignature.parameters;
                        signatureHelpParameters = parameters.length > 0 ? ts.map(parameters, createSignatureHelpParameterForParameter) : emptyArray;
                        suffixDisplayParts.push(ts.punctuationPart(17));
                    }
                    var returnTypeParts = ts.mapToDisplayParts(function (writer) {
                        return typeChecker.getSymbolDisplayBuilder().buildReturnTypeDisplay(candidateSignature, writer, invocation);
                    });
                    suffixDisplayParts.push.apply(suffixDisplayParts, returnTypeParts);
                    return {
                        isVariadic: candidateSignature.hasRestParameter,
                        prefixDisplayParts: prefixDisplayParts,
                        suffixDisplayParts: suffixDisplayParts,
                        separatorDisplayParts: [ts.punctuationPart(23), ts.spacePart()],
                        parameters: signatureHelpParameters,
                        documentation: candidateSignature.getDocumentationComment()
                    };
                });
                var argumentIndex = argumentListInfo.argumentIndex;
                var argumentCount = argumentListInfo.argumentCount;
                var selectedItemIndex = candidates.indexOf(bestSignature);
                if (selectedItemIndex < 0) {
                    selectedItemIndex = selectBestInvalidOverloadIndex(candidates, argumentCount);
                }
                ts.Debug.assert(argumentIndex === 0 || argumentIndex < argumentCount, "argumentCount < argumentIndex, " + argumentCount + " < " + argumentIndex);
                return {
                    items: items,
                    applicableSpan: applicableSpan,
                    selectedItemIndex: selectedItemIndex,
                    argumentIndex: argumentIndex,
                    argumentCount: argumentCount
                };
                function createSignatureHelpParameterForParameter(parameter) {
                    var displayParts = ts.mapToDisplayParts(function (writer) {
                        return typeChecker.getSymbolDisplayBuilder().buildParameterDisplay(parameter, writer, invocation);
                    });
                    var isOptional = ts.hasQuestionToken(parameter.valueDeclaration);
                    return {
                        name: parameter.name,
                        documentation: parameter.getDocumentationComment(),
                        displayParts: displayParts,
                        isOptional: isOptional
                    };
                }
                function createSignatureHelpParameterForTypeParameter(typeParameter) {
                    var displayParts = ts.mapToDisplayParts(function (writer) {
                        return typeChecker.getSymbolDisplayBuilder().buildTypeParameterDisplay(typeParameter, writer, invocation);
                    });
                    return {
                        name: typeParameter.symbol.name,
                        documentation: emptyArray,
                        displayParts: displayParts,
                        isOptional: false
                    };
                }
            }
        }
        SignatureHelp.getSignatureHelpItems = getSignatureHelpItems;
    })(SignatureHelp = ts.SignatureHelp || (ts.SignatureHelp = {}));
})(ts || (ts = {}));
var ts;
(function (ts) {
    function getEndLinePosition(line, sourceFile) {
        ts.Debug.assert(line >= 0);
        var lineStarts = sourceFile.getLineStarts();
        var lineIndex = line;
        if (lineIndex + 1 === lineStarts.length) {
            return sourceFile.text.length - 1;
        }
        else {
            var start = lineStarts[lineIndex];
            var pos = lineStarts[lineIndex + 1] - 1;
            ts.Debug.assert(ts.isLineBreak(sourceFile.text.charCodeAt(pos)));
            while (start <= pos && ts.isLineBreak(sourceFile.text.charCodeAt(pos))) {
                pos--;
            }
            return pos;
        }
    }
    ts.getEndLinePosition = getEndLinePosition;
    function getLineStartPositionForPosition(position, sourceFile) {
        var lineStarts = sourceFile.getLineStarts();
        var line = sourceFile.getLineAndCharacterOfPosition(position).line;
        return lineStarts[line];
    }
    ts.getLineStartPositionForPosition = getLineStartPositionForPosition;
    function rangeContainsRange(r1, r2) {
        return startEndContainsRange(r1.pos, r1.end, r2);
    }
    ts.rangeContainsRange = rangeContainsRange;
    function startEndContainsRange(start, end, range) {
        return start <= range.pos && end >= range.end;
    }
    ts.startEndContainsRange = startEndContainsRange;
    function rangeContainsStartEnd(range, start, end) {
        return range.pos <= start && range.end >= end;
    }
    ts.rangeContainsStartEnd = rangeContainsStartEnd;
    function rangeOverlapsWithStartEnd(r1, start, end) {
        return startEndOverlapsWithStartEnd(r1.pos, r1.end, start, end);
    }
    ts.rangeOverlapsWithStartEnd = rangeOverlapsWithStartEnd;
    function startEndOverlapsWithStartEnd(start1, end1, start2, end2) {
        var start = Math.max(start1, start2);
        var end = Math.min(end1, end2);
        return start < end;
    }
    ts.startEndOverlapsWithStartEnd = startEndOverlapsWithStartEnd;
    function positionBelongsToNode(candidate, position, sourceFile) {
        return candidate.end > position || !isCompletedNode(candidate, sourceFile);
    }
    ts.positionBelongsToNode = positionBelongsToNode;
    function isCompletedNode(n, sourceFile) {
        if (ts.nodeIsMissing(n)) {
            return false;
        }
        switch (n.kind) {
            case 202:
            case 203:
            case 205:
            case 155:
            case 151:
            case 146:
            case 180:
            case 207:
            case 208:
                return nodeEndsWith(n, 15, sourceFile);
            case 224:
                return isCompletedNode(n.block, sourceFile);
            case 159:
                if (!n.arguments) {
                    return true;
                }
            case 158:
            case 162:
            case 150:
                return nodeEndsWith(n, 17, sourceFile);
            case 143:
            case 144:
                return isCompletedNode(n.type, sourceFile);
            case 136:
            case 137:
            case 138:
            case 201:
            case 163:
            case 135:
            case 134:
            case 140:
            case 139:
            case 164:
                if (n.body) {
                    return isCompletedNode(n.body, sourceFile);
                }
                if (n.type) {
                    return isCompletedNode(n.type, sourceFile);
                }
                return hasChildOfKind(n, 17, sourceFile);
            case 206:
                return n.body && isCompletedNode(n.body, sourceFile);
            case 184:
                if (n.elseStatement) {
                    return isCompletedNode(n.elseStatement, sourceFile);
                }
                return isCompletedNode(n.thenStatement, sourceFile);
            case 183:
                return isCompletedNode(n.expression, sourceFile);
            case 154:
            case 152:
            case 157:
            case 128:
            case 148:
                return nodeEndsWith(n, 19, sourceFile);
            case 141:
                if (n.type) {
                    return isCompletedNode(n.type, sourceFile);
                }
                return hasChildOfKind(n, 19, sourceFile);
            case 221:
            case 222:
                return false;
            case 187:
            case 188:
            case 189:
            case 186:
                return isCompletedNode(n.statement, sourceFile);
            case 185:
                var hasWhileKeyword = findChildOfKind(n, 100, sourceFile);
                if (hasWhileKeyword) {
                    return nodeEndsWith(n, 17, sourceFile);
                }
                return isCompletedNode(n.statement, sourceFile);
            case 145:
                return isCompletedNode(n.exprName, sourceFile);
            case 166:
            case 165:
            case 167:
            case 173:
            case 174:
                var unaryWordExpression = n;
                return isCompletedNode(unaryWordExpression.expression, sourceFile);
            case 160:
                return isCompletedNode(n.template, sourceFile);
            case 172:
                var lastSpan = ts.lastOrUndefined(n.templateSpans);
                return isCompletedNode(lastSpan, sourceFile);
            case 178:
                return ts.nodeIsPresent(n.literal);
            case 168:
                return isCompletedNode(n.operand, sourceFile);
            case 170:
                return isCompletedNode(n.right, sourceFile);
            case 171:
                return isCompletedNode(n.whenFalse, sourceFile);
            default:
                return true;
        }
    }
    ts.isCompletedNode = isCompletedNode;
    function nodeEndsWith(n, expectedLastToken, sourceFile) {
        var children = n.getChildren(sourceFile);
        if (children.length) {
            var last = ts.lastOrUndefined(children);
            if (last.kind === expectedLastToken) {
                return true;
            }
            else if (last.kind === 22 && children.length !== 1) {
                return children[children.length - 2].kind === expectedLastToken;
            }
        }
        return false;
    }
    function findListItemInfo(node) {
        var list = findContainingList(node);
        if (!list) {
            return undefined;
        }
        var children = list.getChildren();
        var listItemIndex = ts.indexOf(children, node);
        return {
            listItemIndex: listItemIndex,
            list: list
        };
    }
    ts.findListItemInfo = findListItemInfo;
    function hasChildOfKind(n, kind, sourceFile) {
        return !!findChildOfKind(n, kind, sourceFile);
    }
    ts.hasChildOfKind = hasChildOfKind;
    function findChildOfKind(n, kind, sourceFile) {
        return ts.forEach(n.getChildren(sourceFile), function (c) { return c.kind === kind && c; });
    }
    ts.findChildOfKind = findChildOfKind;
    function findContainingList(node) {
        var syntaxList = ts.forEach(node.parent.getChildren(), function (c) {
            if (c.kind === 229 && c.pos <= node.pos && c.end >= node.end) {
                return c;
            }
        });
        ts.Debug.assert(!syntaxList || ts.contains(syntaxList.getChildren(), node));
        return syntaxList;
    }
    ts.findContainingList = findContainingList;
    function getTouchingWord(sourceFile, position) {
        return getTouchingToken(sourceFile, position, function (n) { return isWord(n.kind); });
    }
    ts.getTouchingWord = getTouchingWord;
    function getTouchingPropertyName(sourceFile, position) {
        return getTouchingToken(sourceFile, position, function (n) { return isPropertyName(n.kind); });
    }
    ts.getTouchingPropertyName = getTouchingPropertyName;
    function getTouchingToken(sourceFile, position, includeItemAtEndPosition) {
        return getTokenAtPositionWorker(sourceFile, position, false, includeItemAtEndPosition);
    }
    ts.getTouchingToken = getTouchingToken;
    function getTokenAtPosition(sourceFile, position) {
        return getTokenAtPositionWorker(sourceFile, position, true, undefined);
    }
    ts.getTokenAtPosition = getTokenAtPosition;
    function getTokenAtPositionWorker(sourceFile, position, allowPositionInLeadingTrivia, includeItemAtEndPosition) {
        var current = sourceFile;
        outer: while (true) {
            if (isToken(current)) {
                return current;
            }
            for (var i = 0, n = current.getChildCount(sourceFile); i < n; i++) {
                var child = current.getChildAt(i);
                var start = allowPositionInLeadingTrivia ? child.getFullStart() : child.getStart(sourceFile);
                if (start <= position) {
                    var end = child.getEnd();
                    if (position < end || (position === end && child.kind === 1)) {
                        current = child;
                        continue outer;
                    }
                    else if (includeItemAtEndPosition && end === position) {
                        var previousToken = findPrecedingToken(position, sourceFile, child);
                        if (previousToken && includeItemAtEndPosition(previousToken)) {
                            return previousToken;
                        }
                    }
                }
            }
            return current;
        }
    }
    function findTokenOnLeftOfPosition(file, position) {
        var tokenAtPosition = getTokenAtPosition(file, position);
        if (isToken(tokenAtPosition) && position > tokenAtPosition.getStart(file) && position < tokenAtPosition.getEnd()) {
            return tokenAtPosition;
        }
        return findPrecedingToken(position, file);
    }
    ts.findTokenOnLeftOfPosition = findTokenOnLeftOfPosition;
    function findNextToken(previousToken, parent) {
        return find(parent);
        function find(n) {
            if (isToken(n) && n.pos === previousToken.end) {
                return n;
            }
            var children = n.getChildren();
            for (var _i = 0; _i < children.length; _i++) {
                var child = children[_i];
                var shouldDiveInChildNode = (child.pos <= previousToken.pos && child.end > previousToken.end) ||
                    (child.pos === previousToken.end);
                if (shouldDiveInChildNode && nodeHasTokens(child)) {
                    return find(child);
                }
            }
            return undefined;
        }
    }
    ts.findNextToken = findNextToken;
    function findPrecedingToken(position, sourceFile, startNode) {
        return find(startNode || sourceFile);
        function findRightmostToken(n) {
            if (isToken(n)) {
                return n;
            }
            var children = n.getChildren();
            var candidate = findRightmostChildNodeWithTokens(children, children.length);
            return candidate && findRightmostToken(candidate);
        }
        function find(n) {
            if (isToken(n)) {
                return n;
            }
            var children = n.getChildren();
            for (var i = 0, len = children.length; i < len; i++) {
                var child = children[i];
                if (nodeHasTokens(child)) {
                    if (position <= child.end) {
                        if (child.getStart(sourceFile) >= position) {
                            var candidate = findRightmostChildNodeWithTokens(children, i);
                            return candidate && findRightmostToken(candidate);
                        }
                        else {
                            return find(child);
                        }
                    }
                }
            }
            ts.Debug.assert(startNode !== undefined || n.kind === 228);
            if (children.length) {
                var candidate = findRightmostChildNodeWithTokens(children, children.length);
                return candidate && findRightmostToken(candidate);
            }
        }
        function findRightmostChildNodeWithTokens(children, exclusiveStartPosition) {
            for (var i = exclusiveStartPosition - 1; i >= 0; --i) {
                if (nodeHasTokens(children[i])) {
                    return children[i];
                }
            }
        }
    }
    ts.findPrecedingToken = findPrecedingToken;
    function nodeHasTokens(n) {
        return n.getWidth() !== 0;
    }
    function getNodeModifiers(node) {
        var flags = ts.getCombinedNodeFlags(node);
        var result = [];
        if (flags & 32)
            result.push(ts.ScriptElementKindModifier.privateMemberModifier);
        if (flags & 64)
            result.push(ts.ScriptElementKindModifier.protectedMemberModifier);
        if (flags & 16)
            result.push(ts.ScriptElementKindModifier.publicMemberModifier);
        if (flags & 128)
            result.push(ts.ScriptElementKindModifier.staticModifier);
        if (flags & 1)
            result.push(ts.ScriptElementKindModifier.exportedModifier);
        if (ts.isInAmbientContext(node))
            result.push(ts.ScriptElementKindModifier.ambientModifier);
        return result.length > 0 ? result.join(',') : ts.ScriptElementKindModifier.none;
    }
    ts.getNodeModifiers = getNodeModifiers;
    function getTypeArgumentOrTypeParameterList(node) {
        if (node.kind === 142 || node.kind === 158) {
            return node.typeArguments;
        }
        if (ts.isFunctionLike(node) || node.kind === 202 || node.kind === 203) {
            return node.typeParameters;
        }
        return undefined;
    }
    ts.getTypeArgumentOrTypeParameterList = getTypeArgumentOrTypeParameterList;
    function isToken(n) {
        return n.kind >= 0 && n.kind <= 126;
    }
    ts.isToken = isToken;
    function isWord(kind) {
        return kind === 65 || ts.isKeyword(kind);
    }
    ts.isWord = isWord;
    function isPropertyName(kind) {
        return kind === 8 || kind === 7 || isWord(kind);
    }
    function isComment(kind) {
        return kind === 2 || kind === 3;
    }
    ts.isComment = isComment;
    function isPunctuation(kind) {
        return 14 <= kind && kind <= 64;
    }
    ts.isPunctuation = isPunctuation;
    function isInsideTemplateLiteral(node, position) {
        return ts.isTemplateLiteralKind(node.kind)
            && (node.getStart() < position && position < node.getEnd()) || (!!node.isUnterminated && position === node.getEnd());
    }
    ts.isInsideTemplateLiteral = isInsideTemplateLiteral;
    function isAccessibilityModifier(kind) {
        switch (kind) {
            case 108:
            case 106:
            case 107:
                return true;
        }
        return false;
    }
    ts.isAccessibilityModifier = isAccessibilityModifier;
    function compareDataObjects(dst, src) {
        for (var e in dst) {
            if (typeof dst[e] === "object") {
                if (!compareDataObjects(dst[e], src[e])) {
                    return false;
                }
            }
            else if (typeof dst[e] !== "function") {
                if (dst[e] !== src[e]) {
                    return false;
                }
            }
        }
        return true;
    }
    ts.compareDataObjects = compareDataObjects;
})(ts || (ts = {}));
var ts;
(function (ts) {
    function isFirstDeclarationOfSymbolParameter(symbol) {
        return symbol.declarations && symbol.declarations.length > 0 && symbol.declarations[0].kind === 130;
    }
    ts.isFirstDeclarationOfSymbolParameter = isFirstDeclarationOfSymbolParameter;
    var displayPartWriter = getDisplayPartWriter();
    function getDisplayPartWriter() {
        var displayParts;
        var lineStart;
        var indent;
        resetWriter();
        return {
            displayParts: function () { return displayParts; },
            writeKeyword: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.keyword); },
            writeOperator: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.operator); },
            writePunctuation: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.punctuation); },
            writeSpace: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.space); },
            writeStringLiteral: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.stringLiteral); },
            writeParameter: function (text) { return writeKind(text, ts.SymbolDisplayPartKind.parameterName); },
            writeSymbol: writeSymbol,
            writeLine: writeLine,
            increaseIndent: function () { indent++; },
            decreaseIndent: function () { indent--; },
            clear: resetWriter,
            trackSymbol: function () { }
        };
        function writeIndent() {
            if (lineStart) {
                var indentString = ts.getIndentString(indent);
                if (indentString) {
                    displayParts.push(displayPart(indentString, ts.SymbolDisplayPartKind.space));
                }
                lineStart = false;
            }
        }
        function writeKind(text, kind) {
            writeIndent();
            displayParts.push(displayPart(text, kind));
        }
        function writeSymbol(text, symbol) {
            writeIndent();
            displayParts.push(symbolPart(text, symbol));
        }
        function writeLine() {
            displayParts.push(lineBreakPart());
            lineStart = true;
        }
        function resetWriter() {
            displayParts = [];
            lineStart = true;
            indent = 0;
        }
    }
    function symbolPart(text, symbol) {
        return displayPart(text, displayPartKind(symbol), symbol);
        function displayPartKind(symbol) {
            var flags = symbol.flags;
            if (flags & 3) {
                return isFirstDeclarationOfSymbolParameter(symbol) ? ts.SymbolDisplayPartKind.parameterName : ts.SymbolDisplayPartKind.localName;
            }
            else if (flags & 4) {
                return ts.SymbolDisplayPartKind.propertyName;
            }
            else if (flags & 32768) {
                return ts.SymbolDisplayPartKind.propertyName;
            }
            else if (flags & 65536) {
                return ts.SymbolDisplayPartKind.propertyName;
            }
            else if (flags & 8) {
                return ts.SymbolDisplayPartKind.enumMemberName;
            }
            else if (flags & 16) {
                return ts.SymbolDisplayPartKind.functionName;
            }
            else if (flags & 32) {
                return ts.SymbolDisplayPartKind.className;
            }
            else if (flags & 64) {
                return ts.SymbolDisplayPartKind.interfaceName;
            }
            else if (flags & 384) {
                return ts.SymbolDisplayPartKind.enumName;
            }
            else if (flags & 1536) {
                return ts.SymbolDisplayPartKind.moduleName;
            }
            else if (flags & 8192) {
                return ts.SymbolDisplayPartKind.methodName;
            }
            else if (flags & 262144) {
                return ts.SymbolDisplayPartKind.typeParameterName;
            }
            else if (flags & 524288) {
                return ts.SymbolDisplayPartKind.aliasName;
            }
            else if (flags & 8388608) {
                return ts.SymbolDisplayPartKind.aliasName;
            }
            return ts.SymbolDisplayPartKind.text;
        }
    }
    ts.symbolPart = symbolPart;
    function displayPart(text, kind, symbol) {
        return {
            text: text,
            kind: ts.SymbolDisplayPartKind[kind]
        };
    }
    ts.displayPart = displayPart;
    function spacePart() {
        return displayPart(" ", ts.SymbolDisplayPartKind.space);
    }
    ts.spacePart = spacePart;
    function keywordPart(kind) {
        return displayPart(ts.tokenToString(kind), ts.SymbolDisplayPartKind.keyword);
    }
    ts.keywordPart = keywordPart;
    function punctuationPart(kind) {
        return displayPart(ts.tokenToString(kind), ts.SymbolDisplayPartKind.punctuation);
    }
    ts.punctuationPart = punctuationPart;
    function operatorPart(kind) {
        return displayPart(ts.tokenToString(kind), ts.SymbolDisplayPartKind.operator);
    }
    ts.operatorPart = operatorPart;
    function textOrKeywordPart(text) {
        var kind = ts.stringToToken(text);
        return kind === undefined
            ? textPart(text)
            : keywordPart(kind);
    }
    ts.textOrKeywordPart = textOrKeywordPart;
    function textPart(text) {
        return displayPart(text, ts.SymbolDisplayPartKind.text);
    }
    ts.textPart = textPart;
    function lineBreakPart() {
        return displayPart("\n", ts.SymbolDisplayPartKind.lineBreak);
    }
    ts.lineBreakPart = lineBreakPart;
    function mapToDisplayParts(writeDisplayParts) {
        writeDisplayParts(displayPartWriter);
        var result = displayPartWriter.displayParts();
        displayPartWriter.clear();
        return result;
    }
    ts.mapToDisplayParts = mapToDisplayParts;
    function typeToDisplayParts(typechecker, type, enclosingDeclaration, flags) {
        return mapToDisplayParts(function (writer) {
            typechecker.getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
        });
    }
    ts.typeToDisplayParts = typeToDisplayParts;
    function symbolToDisplayParts(typeChecker, symbol, enclosingDeclaration, meaning, flags) {
        return mapToDisplayParts(function (writer) {
            typeChecker.getSymbolDisplayBuilder().buildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning, flags);
        });
    }
    ts.symbolToDisplayParts = symbolToDisplayParts;
    function signatureToDisplayParts(typechecker, signature, enclosingDeclaration, flags) {
        return mapToDisplayParts(function (writer) {
            typechecker.getSymbolDisplayBuilder().buildSignatureDisplay(signature, writer, enclosingDeclaration, flags);
        });
    }
    ts.signatureToDisplayParts = signatureToDisplayParts;
    function isJavaScript(fileName) {
        return ts.fileExtensionIs(fileName, ".js");
    }
    ts.isJavaScript = isJavaScript;
})(ts || (ts = {}));
/// <reference path="formatting.ts"/>
/// <reference path="..\..\compiler\scanner.ts"/>
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var scanner = ts.createScanner(2, false);
        function getFormattingScanner(sourceFile, startPos, endPos) {
            scanner.setText(sourceFile.text);
            scanner.setTextPos(startPos);
            var wasNewLine = true;
            var leadingTrivia;
            var trailingTrivia;
            var savedPos;
            var lastScanAction;
            var lastTokenInfo;
            return {
                advance: advance,
                readTokenInfo: readTokenInfo,
                isOnToken: isOnToken,
                lastTrailingTriviaWasNewLine: function () { return wasNewLine; },
                close: function () {
                    lastTokenInfo = undefined;
                    scanner.setText(undefined);
                }
            };
            function advance() {
                lastTokenInfo = undefined;
                var isStarted = scanner.getStartPos() !== startPos;
                if (isStarted) {
                    if (trailingTrivia) {
                        ts.Debug.assert(trailingTrivia.length !== 0);
                        wasNewLine = ts.lastOrUndefined(trailingTrivia).kind === 4;
                    }
                    else {
                        wasNewLine = false;
                    }
                }
                leadingTrivia = undefined;
                trailingTrivia = undefined;
                if (!isStarted) {
                    scanner.scan();
                }
                var t;
                var pos = scanner.getStartPos();
                while (pos < endPos) {
                    var t_2 = scanner.getToken();
                    if (!ts.isTrivia(t_2)) {
                        break;
                    }
                    scanner.scan();
                    var item = {
                        pos: pos,
                        end: scanner.getStartPos(),
                        kind: t_2
                    };
                    pos = scanner.getStartPos();
                    if (!leadingTrivia) {
                        leadingTrivia = [];
                    }
                    leadingTrivia.push(item);
                }
                savedPos = scanner.getStartPos();
            }
            function shouldRescanGreaterThanToken(node) {
                if (node) {
                    switch (node.kind) {
                        case 27:
                        case 60:
                        case 61:
                        case 42:
                        case 41:
                            return true;
                    }
                }
                return false;
            }
            function shouldRescanSlashToken(container) {
                return container.kind === 9;
            }
            function shouldRescanTemplateToken(container) {
                return container.kind === 12 ||
                    container.kind === 13;
            }
            function startsWithSlashToken(t) {
                return t === 36 || t === 57;
            }
            function readTokenInfo(n) {
                if (!isOnToken()) {
                    return {
                        leadingTrivia: leadingTrivia,
                        trailingTrivia: undefined,
                        token: undefined
                    };
                }
                var expectedScanAction = shouldRescanGreaterThanToken(n)
                    ? 1
                    : shouldRescanSlashToken(n)
                        ? 2
                        : shouldRescanTemplateToken(n)
                            ? 3
                            : 0;
                if (lastTokenInfo && expectedScanAction === lastScanAction) {
                    return fixTokenKind(lastTokenInfo, n);
                }
                if (scanner.getStartPos() !== savedPos) {
                    ts.Debug.assert(lastTokenInfo !== undefined);
                    scanner.setTextPos(savedPos);
                    scanner.scan();
                }
                var currentToken = scanner.getToken();
                if (expectedScanAction === 1 && currentToken === 25) {
                    currentToken = scanner.reScanGreaterToken();
                    ts.Debug.assert(n.kind === currentToken);
                    lastScanAction = 1;
                }
                else if (expectedScanAction === 2 && startsWithSlashToken(currentToken)) {
                    currentToken = scanner.reScanSlashToken();
                    ts.Debug.assert(n.kind === currentToken);
                    lastScanAction = 2;
                }
                else if (expectedScanAction === 3 && currentToken === 15) {
                    currentToken = scanner.reScanTemplateToken();
                    lastScanAction = 3;
                }
                else {
                    lastScanAction = 0;
                }
                var token = {
                    pos: scanner.getStartPos(),
                    end: scanner.getTextPos(),
                    kind: currentToken
                };
                if (trailingTrivia) {
                    trailingTrivia = undefined;
                }
                while (scanner.getStartPos() < endPos) {
                    currentToken = scanner.scan();
                    if (!ts.isTrivia(currentToken)) {
                        break;
                    }
                    var trivia = {
                        pos: scanner.getStartPos(),
                        end: scanner.getTextPos(),
                        kind: currentToken
                    };
                    if (!trailingTrivia) {
                        trailingTrivia = [];
                    }
                    trailingTrivia.push(trivia);
                    if (currentToken === 4) {
                        scanner.scan();
                        break;
                    }
                }
                lastTokenInfo = {
                    leadingTrivia: leadingTrivia,
                    trailingTrivia: trailingTrivia,
                    token: token
                };
                return fixTokenKind(lastTokenInfo, n);
            }
            function isOnToken() {
                var current = (lastTokenInfo && lastTokenInfo.token.kind) || scanner.getToken();
                var startPos = (lastTokenInfo && lastTokenInfo.token.pos) || scanner.getStartPos();
                return startPos < endPos && current !== 1 && !ts.isTrivia(current);
            }
            function fixTokenKind(tokenInfo, container) {
                if (ts.isToken(container) && tokenInfo.token.kind !== container.kind) {
                    tokenInfo.token.kind = container.kind;
                }
                return tokenInfo;
            }
        }
        formatting.getFormattingScanner = getFormattingScanner;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
/// <reference path="references.ts"/>
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var FormattingContext = (function () {
            function FormattingContext(sourceFile, formattingRequestKind) {
                this.sourceFile = sourceFile;
                this.formattingRequestKind = formattingRequestKind;
            }
            FormattingContext.prototype.updateContext = function (currentRange, currentTokenParent, nextRange, nextTokenParent, commonParent) {
                ts.Debug.assert(currentRange !== undefined, "currentTokenSpan is null");
                ts.Debug.assert(currentTokenParent !== undefined, "currentTokenParent is null");
                ts.Debug.assert(nextRange !== undefined, "nextTokenSpan is null");
                ts.Debug.assert(nextTokenParent !== undefined, "nextTokenParent is null");
                ts.Debug.assert(commonParent !== undefined, "commonParent is null");
                this.currentTokenSpan = currentRange;
                this.currentTokenParent = currentTokenParent;
                this.nextTokenSpan = nextRange;
                this.nextTokenParent = nextTokenParent;
                this.contextNode = commonParent;
                this.contextNodeAllOnSameLine = undefined;
                this.nextNodeAllOnSameLine = undefined;
                this.tokensAreOnSameLine = undefined;
                this.contextNodeBlockIsOnOneLine = undefined;
                this.nextNodeBlockIsOnOneLine = undefined;
            };
            FormattingContext.prototype.ContextNodeAllOnSameLine = function () {
                if (this.contextNodeAllOnSameLine === undefined) {
                    this.contextNodeAllOnSameLine = this.NodeIsOnOneLine(this.contextNode);
                }
                return this.contextNodeAllOnSameLine;
            };
            FormattingContext.prototype.NextNodeAllOnSameLine = function () {
                if (this.nextNodeAllOnSameLine === undefined) {
                    this.nextNodeAllOnSameLine = this.NodeIsOnOneLine(this.nextTokenParent);
                }
                return this.nextNodeAllOnSameLine;
            };
            FormattingContext.prototype.TokensAreOnSameLine = function () {
                if (this.tokensAreOnSameLine === undefined) {
                    var startLine = this.sourceFile.getLineAndCharacterOfPosition(this.currentTokenSpan.pos).line;
                    var endLine = this.sourceFile.getLineAndCharacterOfPosition(this.nextTokenSpan.pos).line;
                    this.tokensAreOnSameLine = (startLine == endLine);
                }
                return this.tokensAreOnSameLine;
            };
            FormattingContext.prototype.ContextNodeBlockIsOnOneLine = function () {
                if (this.contextNodeBlockIsOnOneLine === undefined) {
                    this.contextNodeBlockIsOnOneLine = this.BlockIsOnOneLine(this.contextNode);
                }
                return this.contextNodeBlockIsOnOneLine;
            };
            FormattingContext.prototype.NextNodeBlockIsOnOneLine = function () {
                if (this.nextNodeBlockIsOnOneLine === undefined) {
                    this.nextNodeBlockIsOnOneLine = this.BlockIsOnOneLine(this.nextTokenParent);
                }
                return this.nextNodeBlockIsOnOneLine;
            };
            FormattingContext.prototype.NodeIsOnOneLine = function (node) {
                var startLine = this.sourceFile.getLineAndCharacterOfPosition(node.getStart(this.sourceFile)).line;
                var endLine = this.sourceFile.getLineAndCharacterOfPosition(node.getEnd()).line;
                return startLine == endLine;
            };
            FormattingContext.prototype.BlockIsOnOneLine = function (node) {
                var openBrace = ts.findChildOfKind(node, 14, this.sourceFile);
                var closeBrace = ts.findChildOfKind(node, 15, this.sourceFile);
                if (openBrace && closeBrace) {
                    var startLine = this.sourceFile.getLineAndCharacterOfPosition(openBrace.getEnd()).line;
                    var endLine = this.sourceFile.getLineAndCharacterOfPosition(closeBrace.getStart(this.sourceFile)).line;
                    return startLine === endLine;
                }
                return false;
            };
            return FormattingContext;
        })();
        formatting.FormattingContext = FormattingContext;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
/// <reference path="references.ts"/>
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var Rule = (function () {
            function Rule(Descriptor, Operation, Flag) {
                if (Flag === void 0) { Flag = 0; }
                this.Descriptor = Descriptor;
                this.Operation = Operation;
                this.Flag = Flag;
            }
            Rule.prototype.toString = function () {
                return "[desc=" + this.Descriptor + "," +
                    "operation=" + this.Operation + "," +
                    "flag=" + this.Flag + "]";
            };
            return Rule;
        })();
        formatting.Rule = Rule;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var RuleDescriptor = (function () {
            function RuleDescriptor(LeftTokenRange, RightTokenRange) {
                this.LeftTokenRange = LeftTokenRange;
                this.RightTokenRange = RightTokenRange;
            }
            RuleDescriptor.prototype.toString = function () {
                return "[leftRange=" + this.LeftTokenRange + "," +
                    "rightRange=" + this.RightTokenRange + "]";
            };
            RuleDescriptor.create1 = function (left, right) {
                return RuleDescriptor.create4(formatting.Shared.TokenRange.FromToken(left), formatting.Shared.TokenRange.FromToken(right));
            };
            RuleDescriptor.create2 = function (left, right) {
                return RuleDescriptor.create4(left, formatting.Shared.TokenRange.FromToken(right));
            };
            RuleDescriptor.create3 = function (left, right) {
                return RuleDescriptor.create4(formatting.Shared.TokenRange.FromToken(left), right);
            };
            RuleDescriptor.create4 = function (left, right) {
                return new RuleDescriptor(left, right);
            };
            return RuleDescriptor;
        })();
        formatting.RuleDescriptor = RuleDescriptor;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var RuleOperation = (function () {
            function RuleOperation() {
                this.Context = null;
                this.Action = null;
            }
            RuleOperation.prototype.toString = function () {
                return "[context=" + this.Context + "," +
                    "action=" + this.Action + "]";
            };
            RuleOperation.create1 = function (action) {
                return RuleOperation.create2(formatting.RuleOperationContext.Any, action);
            };
            RuleOperation.create2 = function (context, action) {
                var result = new RuleOperation();
                result.Context = context;
                result.Action = action;
                return result;
            };
            return RuleOperation;
        })();
        formatting.RuleOperation = RuleOperation;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var RuleOperationContext = (function () {
            function RuleOperationContext() {
                var funcs = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    funcs[_i - 0] = arguments[_i];
                }
                this.customContextChecks = funcs;
            }
            RuleOperationContext.prototype.IsAny = function () {
                return this == RuleOperationContext.Any;
            };
            RuleOperationContext.prototype.InContext = function (context) {
                if (this.IsAny()) {
                    return true;
                }
                for (var _i = 0, _a = this.customContextChecks; _i < _a.length; _i++) {
                    var check = _a[_i];
                    if (!check(context)) {
                        return false;
                    }
                }
                return true;
            };
            RuleOperationContext.Any = new RuleOperationContext();
            return RuleOperationContext;
        })();
        formatting.RuleOperationContext = RuleOperationContext;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var Rules = (function () {
            function Rules() {
                ///
                /// Common Rules
                ///
                this.IgnoreBeforeComment = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.Comments), formatting.RuleOperation.create1(1));
                this.IgnoreAfterLineComment = new formatting.Rule(formatting.RuleDescriptor.create3(2, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create1(1));
                this.NoSpaceBeforeSemicolon = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 22), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeColon = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 51), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotBinaryOpContext), 8));
                this.NoSpaceBeforeQuestionMark = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 50), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotBinaryOpContext), 8));
                this.SpaceAfterColon = new formatting.Rule(formatting.RuleDescriptor.create3(51, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotBinaryOpContext), 2));
                this.SpaceAfterQuestionMarkInConditionalOperator = new formatting.Rule(formatting.RuleDescriptor.create3(50, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsConditionalOperatorContext), 2));
                this.NoSpaceAfterQuestionMark = new formatting.Rule(formatting.RuleDescriptor.create3(50, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterSemicolon = new formatting.Rule(formatting.RuleDescriptor.create3(22, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceAfterCloseBrace = new formatting.Rule(formatting.RuleDescriptor.create3(15, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsAfterCodeBlockContext), 2));
                this.SpaceBetweenCloseBraceAndElse = new formatting.Rule(formatting.RuleDescriptor.create1(15, 76), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceBetweenCloseBraceAndWhile = new formatting.Rule(formatting.RuleDescriptor.create1(15, 100), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.NoSpaceAfterCloseBrace = new formatting.Rule(formatting.RuleDescriptor.create3(15, formatting.Shared.TokenRange.FromTokens([17, 19, 23, 22])), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeDot = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 20), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterDot = new formatting.Rule(formatting.RuleDescriptor.create3(20, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeOpenBracket = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 18), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterOpenBracket = new formatting.Rule(formatting.RuleDescriptor.create3(18, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeCloseBracket = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 19), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterCloseBracket = new formatting.Rule(formatting.RuleDescriptor.create3(19, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.FunctionOpenBraceLeftTokenRange = formatting.Shared.TokenRange.AnyIncludingMultilineComments;
                this.SpaceBeforeOpenBraceInFunction = new formatting.Rule(formatting.RuleDescriptor.create2(this.FunctionOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext, Rules.IsBeforeBlockContext, Rules.IsNotFormatOnEnter, Rules.IsSameLineTokenOrBeforeMultilineBlockContext), 2), 1);
                this.TypeScriptOpenBraceLeftTokenRange = formatting.Shared.TokenRange.FromTokens([65, 3]);
                this.SpaceBeforeOpenBraceInTypeScriptDeclWithBlock = new formatting.Rule(formatting.RuleDescriptor.create2(this.TypeScriptOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsTypeScriptDeclWithBlockContext, Rules.IsNotFormatOnEnter, Rules.IsSameLineTokenOrBeforeMultilineBlockContext), 2), 1);
                this.ControlOpenBraceLeftTokenRange = formatting.Shared.TokenRange.FromTokens([17, 3, 75, 96, 81, 76]);
                this.SpaceBeforeOpenBraceInControl = new formatting.Rule(formatting.RuleDescriptor.create2(this.ControlOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsControlDeclContext, Rules.IsNotFormatOnEnter, Rules.IsSameLineTokenOrBeforeMultilineBlockContext), 2), 1);
                this.SpaceAfterOpenBrace = new formatting.Rule(formatting.RuleDescriptor.create3(14, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSingleLineBlockContext), 2));
                this.SpaceBeforeCloseBrace = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 15), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSingleLineBlockContext), 2));
                this.NoSpaceBetweenEmptyBraceBrackets = new formatting.Rule(formatting.RuleDescriptor.create1(14, 15), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsObjectContext), 8));
                this.NewLineAfterOpenBraceInBlockContext = new formatting.Rule(formatting.RuleDescriptor.create3(14, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsMultilineBlockContext), 4));
                this.NewLineBeforeCloseBraceInBlockContext = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.AnyIncludingMultilineComments, 15), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsMultilineBlockContext), 4));
                this.NoSpaceAfterUnaryPrefixOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.UnaryPrefixOperators, formatting.Shared.TokenRange.UnaryPrefixExpressions), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotBinaryOpContext), 8));
                this.NoSpaceAfterUnaryPreincrementOperator = new formatting.Rule(formatting.RuleDescriptor.create3(38, formatting.Shared.TokenRange.UnaryPreincrementExpressions), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterUnaryPredecrementOperator = new formatting.Rule(formatting.RuleDescriptor.create3(39, formatting.Shared.TokenRange.UnaryPredecrementExpressions), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeUnaryPostincrementOperator = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.UnaryPostincrementExpressions, 38), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeUnaryPostdecrementOperator = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.UnaryPostdecrementExpressions, 39), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterPostincrementWhenFollowedByAdd = new formatting.Rule(formatting.RuleDescriptor.create1(38, 33), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterAddWhenFollowedByUnaryPlus = new formatting.Rule(formatting.RuleDescriptor.create1(33, 33), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterAddWhenFollowedByPreincrement = new formatting.Rule(formatting.RuleDescriptor.create1(33, 38), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterPostdecrementWhenFollowedBySubtract = new formatting.Rule(formatting.RuleDescriptor.create1(39, 34), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterSubtractWhenFollowedByUnaryMinus = new formatting.Rule(formatting.RuleDescriptor.create1(34, 34), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterSubtractWhenFollowedByPredecrement = new formatting.Rule(formatting.RuleDescriptor.create1(34, 39), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.NoSpaceBeforeComma = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 23), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterCertainKeywords = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.FromTokens([98, 94, 88, 74, 90, 97]), formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceAfterLetConstInVariableDeclaration = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.FromTokens([104, 70]), formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsStartOfVariableDeclarationList), 2));
                this.NoSpaceBeforeOpenParenInFuncCall = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsFunctionCallOrNewContext, Rules.IsPreviousTokenNotComma), 8));
                this.SpaceAfterFunctionInFuncDecl = new formatting.Rule(formatting.RuleDescriptor.create3(83, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext), 2));
                this.NoSpaceBeforeOpenParenInFuncDecl = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsFunctionDeclContext), 8));
                this.SpaceAfterVoidOperator = new formatting.Rule(formatting.RuleDescriptor.create3(99, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsVoidOpContext), 2));
                this.NoSpaceBetweenReturnAndSemicolon = new formatting.Rule(formatting.RuleDescriptor.create1(90, 22), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceBetweenStatements = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.FromTokens([17, 75, 76, 67]), formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotForContext), 2));
                this.SpaceAfterTryFinally = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.FromTokens([96, 81]), 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceAfterGetSetInMember = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.FromTokens([116, 121]), 65), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext), 2));
                this.SpaceBeforeBinaryKeywordOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.BinaryKeywordOperators), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterBinaryKeywordOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.BinaryKeywordOperators, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.NoSpaceAfterConstructor = new formatting.Rule(formatting.RuleDescriptor.create1(114, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterModuleImport = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.FromTokens([117, 119]), 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterCertainTypeScriptKeywords = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.FromTokens([69, 115, 77, 78, 79, 116, 102, 85, 103, 117, 118, 106, 108, 121, 109]), formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceBeforeCertainTypeScriptKeywords = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.FromTokens([79, 102])), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceAfterModuleName = new formatting.Rule(formatting.RuleDescriptor.create1(8, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsModuleDeclContext), 2));
                this.SpaceAfterArrow = new formatting.Rule(formatting.RuleDescriptor.create3(32, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.NoSpaceAfterEllipsis = new formatting.Rule(formatting.RuleDescriptor.create1(21, 65), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterOptionalParameters = new formatting.Rule(formatting.RuleDescriptor.create3(50, formatting.Shared.TokenRange.FromTokens([17, 23])), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsNotBinaryOpContext), 8));
                this.NoSpaceBeforeOpenAngularBracket = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.TypeNames, 24), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsTypeArgumentOrParameterContext), 8));
                this.NoSpaceBetweenCloseParenAndAngularBracket = new formatting.Rule(formatting.RuleDescriptor.create1(17, 24), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsTypeArgumentOrParameterContext), 8));
                this.NoSpaceAfterOpenAngularBracket = new formatting.Rule(formatting.RuleDescriptor.create3(24, formatting.Shared.TokenRange.TypeNames), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsTypeArgumentOrParameterContext), 8));
                this.NoSpaceBeforeCloseAngularBracket = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 25), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsTypeArgumentOrParameterContext), 8));
                this.NoSpaceAfterCloseAngularBracket = new formatting.Rule(formatting.RuleDescriptor.create3(25, formatting.Shared.TokenRange.FromTokens([16, 18, 25, 23])), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsTypeArgumentOrParameterContext), 8));
                this.NoSpaceBetweenEmptyInterfaceBraceBrackets = new formatting.Rule(formatting.RuleDescriptor.create1(14, 15), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsObjectTypeContext), 8));
                this.SpaceBeforeAt = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 52), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.NoSpaceAfterAt = new formatting.Rule(formatting.RuleDescriptor.create3(52, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterDecorator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.FromTokens([65, 78, 73, 69, 109, 108, 106, 107, 116, 121, 18, 35])), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsEndOfDecoratorContextOnSameLine), 2));
                this.HighPriorityCommonRules =
                    [
                        this.IgnoreBeforeComment, this.IgnoreAfterLineComment,
                        this.NoSpaceBeforeColon, this.SpaceAfterColon, this.NoSpaceBeforeQuestionMark, this.SpaceAfterQuestionMarkInConditionalOperator,
                        this.NoSpaceAfterQuestionMark,
                        this.NoSpaceBeforeDot, this.NoSpaceAfterDot,
                        this.NoSpaceAfterUnaryPrefixOperator,
                        this.NoSpaceAfterUnaryPreincrementOperator, this.NoSpaceAfterUnaryPredecrementOperator,
                        this.NoSpaceBeforeUnaryPostincrementOperator, this.NoSpaceBeforeUnaryPostdecrementOperator,
                        this.SpaceAfterPostincrementWhenFollowedByAdd,
                        this.SpaceAfterAddWhenFollowedByUnaryPlus, this.SpaceAfterAddWhenFollowedByPreincrement,
                        this.SpaceAfterPostdecrementWhenFollowedBySubtract,
                        this.SpaceAfterSubtractWhenFollowedByUnaryMinus, this.SpaceAfterSubtractWhenFollowedByPredecrement,
                        this.NoSpaceAfterCloseBrace,
                        this.SpaceAfterOpenBrace, this.SpaceBeforeCloseBrace, this.NewLineBeforeCloseBraceInBlockContext,
                        this.SpaceAfterCloseBrace, this.SpaceBetweenCloseBraceAndElse, this.SpaceBetweenCloseBraceAndWhile, this.NoSpaceBetweenEmptyBraceBrackets,
                        this.SpaceAfterFunctionInFuncDecl, this.NewLineAfterOpenBraceInBlockContext, this.SpaceAfterGetSetInMember,
                        this.NoSpaceBetweenReturnAndSemicolon,
                        this.SpaceAfterCertainKeywords,
                        this.SpaceAfterLetConstInVariableDeclaration,
                        this.NoSpaceBeforeOpenParenInFuncCall,
                        this.SpaceBeforeBinaryKeywordOperator, this.SpaceAfterBinaryKeywordOperator,
                        this.SpaceAfterVoidOperator,
                        this.NoSpaceAfterConstructor, this.NoSpaceAfterModuleImport,
                        this.SpaceAfterCertainTypeScriptKeywords, this.SpaceBeforeCertainTypeScriptKeywords,
                        this.SpaceAfterModuleName,
                        this.SpaceAfterArrow,
                        this.NoSpaceAfterEllipsis,
                        this.NoSpaceAfterOptionalParameters,
                        this.NoSpaceBetweenEmptyInterfaceBraceBrackets,
                        this.NoSpaceBeforeOpenAngularBracket,
                        this.NoSpaceBetweenCloseParenAndAngularBracket,
                        this.NoSpaceAfterOpenAngularBracket,
                        this.NoSpaceBeforeCloseAngularBracket,
                        this.NoSpaceAfterCloseAngularBracket,
                        this.SpaceBeforeAt,
                        this.NoSpaceAfterAt,
                        this.SpaceAfterDecorator,
                    ];
                this.LowPriorityCommonRules =
                    [
                        this.NoSpaceBeforeSemicolon,
                        this.SpaceBeforeOpenBraceInControl, this.SpaceBeforeOpenBraceInFunction, this.SpaceBeforeOpenBraceInTypeScriptDeclWithBlock,
                        this.NoSpaceBeforeComma,
                        this.NoSpaceBeforeOpenBracket, this.NoSpaceAfterOpenBracket,
                        this.NoSpaceBeforeCloseBracket, this.NoSpaceAfterCloseBracket,
                        this.SpaceAfterSemicolon,
                        this.NoSpaceBeforeOpenParenInFuncDecl,
                        this.SpaceBetweenStatements, this.SpaceAfterTryFinally
                    ];
                this.SpaceAfterComma = new formatting.Rule(formatting.RuleDescriptor.create3(23, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.NoSpaceAfterComma = new formatting.Rule(formatting.RuleDescriptor.create3(23, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceBeforeBinaryOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.BinaryOperators), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.SpaceAfterBinaryOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.BinaryOperators, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 2));
                this.NoSpaceBeforeBinaryOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.Any, formatting.Shared.TokenRange.BinaryOperators), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 8));
                this.NoSpaceAfterBinaryOperator = new formatting.Rule(formatting.RuleDescriptor.create4(formatting.Shared.TokenRange.BinaryOperators, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsBinaryOpContext), 8));
                this.SpaceAfterKeywordInControl = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Keywords, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsControlDeclContext), 2));
                this.NoSpaceAfterKeywordInControl = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Keywords, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsControlDeclContext), 8));
                this.NewLineBeforeOpenBraceInFunction = new formatting.Rule(formatting.RuleDescriptor.create2(this.FunctionOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext, Rules.IsBeforeMultilineBlockContext), 4), 1);
                this.NewLineBeforeOpenBraceInTypeScriptDeclWithBlock = new formatting.Rule(formatting.RuleDescriptor.create2(this.TypeScriptOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsTypeScriptDeclWithBlockContext, Rules.IsBeforeMultilineBlockContext), 4), 1);
                this.NewLineBeforeOpenBraceInControl = new formatting.Rule(formatting.RuleDescriptor.create2(this.ControlOpenBraceLeftTokenRange, 14), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsControlDeclContext, Rules.IsBeforeMultilineBlockContext), 4), 1);
                this.SpaceAfterSemicolonInFor = new formatting.Rule(formatting.RuleDescriptor.create3(22, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsForContext), 2));
                this.NoSpaceAfterSemicolonInFor = new formatting.Rule(formatting.RuleDescriptor.create3(22, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext, Rules.IsForContext), 8));
                this.SpaceAfterOpenParen = new formatting.Rule(formatting.RuleDescriptor.create3(16, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.SpaceBeforeCloseParen = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 17), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 2));
                this.NoSpaceBetweenParens = new formatting.Rule(formatting.RuleDescriptor.create1(16, 17), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceAfterOpenParen = new formatting.Rule(formatting.RuleDescriptor.create3(16, formatting.Shared.TokenRange.Any), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.NoSpaceBeforeCloseParen = new formatting.Rule(formatting.RuleDescriptor.create2(formatting.Shared.TokenRange.Any, 17), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsSameLineTokenContext), 8));
                this.SpaceAfterAnonymousFunctionKeyword = new formatting.Rule(formatting.RuleDescriptor.create1(83, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext), 2));
                this.NoSpaceAfterAnonymousFunctionKeyword = new formatting.Rule(formatting.RuleDescriptor.create1(83, 16), formatting.RuleOperation.create2(new formatting.RuleOperationContext(Rules.IsFunctionDeclContext), 8));
            }
            Rules.prototype.getRuleName = function (rule) {
                var o = this;
                for (var name_25 in o) {
                    if (o[name_25] === rule) {
                        return name_25;
                    }
                }
                throw new Error("Unknown rule");
            };
            Rules.IsForContext = function (context) {
                return context.contextNode.kind === 187;
            };
            Rules.IsNotForContext = function (context) {
                return !Rules.IsForContext(context);
            };
            Rules.IsBinaryOpContext = function (context) {
                switch (context.contextNode.kind) {
                    case 170:
                    case 171:
                        return true;
                    case 153:
                    case 204:
                    case 209:
                    case 199:
                    case 130:
                    case 227:
                    case 133:
                    case 132:
                        return context.currentTokenSpan.kind === 53 || context.nextTokenSpan.kind === 53;
                    case 188:
                        return context.currentTokenSpan.kind === 86 || context.nextTokenSpan.kind === 86;
                    case 189:
                        return context.currentTokenSpan.kind === 126 || context.nextTokenSpan.kind === 126;
                }
                return false;
            };
            Rules.IsNotBinaryOpContext = function (context) {
                return !Rules.IsBinaryOpContext(context);
            };
            Rules.IsConditionalOperatorContext = function (context) {
                return context.contextNode.kind === 171;
            };
            Rules.IsSameLineTokenOrBeforeMultilineBlockContext = function (context) {
                //// This check is mainly used inside SpaceBeforeOpenBraceInControl and SpaceBeforeOpenBraceInFunction.
                ////
                //// Ex: 
                //// if (1)     { ....
                ////      * ) and { are on the same line so apply the rule. Here we don't care whether it's same or multi block context
                ////
                //// Ex: 
                //// if (1)
                //// { ... }
                ////      * ) and { are on differnet lines. We only need to format if the block is multiline context. So in this case we don't format.
                ////
                //// Ex:
                //// if (1) 
                //// { ...
                //// }
                ////      * ) and { are on differnet lines. We only need to format if the block is multiline context. So in this case we format.
                return context.TokensAreOnSameLine() || Rules.IsBeforeMultilineBlockContext(context);
            };
            Rules.IsBeforeMultilineBlockContext = function (context) {
                return Rules.IsBeforeBlockContext(context) && !(context.NextNodeAllOnSameLine() || context.NextNodeBlockIsOnOneLine());
            };
            Rules.IsMultilineBlockContext = function (context) {
                return Rules.IsBlockContext(context) && !(context.ContextNodeAllOnSameLine() || context.ContextNodeBlockIsOnOneLine());
            };
            Rules.IsSingleLineBlockContext = function (context) {
                return Rules.IsBlockContext(context) && (context.ContextNodeAllOnSameLine() || context.ContextNodeBlockIsOnOneLine());
            };
            Rules.IsBlockContext = function (context) {
                return Rules.NodeIsBlockContext(context.contextNode);
            };
            Rules.IsBeforeBlockContext = function (context) {
                return Rules.NodeIsBlockContext(context.nextTokenParent);
            };
            Rules.NodeIsBlockContext = function (node) {
                if (Rules.NodeIsTypeScriptDeclWithBlockContext(node)) {
                    return true;
                }
                switch (node.kind) {
                    case 180:
                    case 208:
                    case 155:
                    case 207:
                        return true;
                }
                return false;
            };
            Rules.IsFunctionDeclContext = function (context) {
                switch (context.contextNode.kind) {
                    case 201:
                    case 135:
                    case 134:
                    case 137:
                    case 138:
                    case 139:
                    case 163:
                    case 136:
                    case 164:
                    case 203:
                        return true;
                }
                return false;
            };
            Rules.IsTypeScriptDeclWithBlockContext = function (context) {
                return Rules.NodeIsTypeScriptDeclWithBlockContext(context.contextNode);
            };
            Rules.NodeIsTypeScriptDeclWithBlockContext = function (node) {
                switch (node.kind) {
                    case 202:
                    case 203:
                    case 205:
                    case 146:
                    case 206:
                        return true;
                }
                return false;
            };
            Rules.IsAfterCodeBlockContext = function (context) {
                switch (context.currentTokenParent.kind) {
                    case 202:
                    case 206:
                    case 205:
                    case 180:
                    case 224:
                    case 207:
                    case 194:
                        return true;
                }
                return false;
            };
            Rules.IsControlDeclContext = function (context) {
                switch (context.contextNode.kind) {
                    case 184:
                    case 194:
                    case 187:
                    case 188:
                    case 189:
                    case 186:
                    case 197:
                    case 185:
                    case 193:
                    case 224:
                        return true;
                    default:
                        return false;
                }
            };
            Rules.IsObjectContext = function (context) {
                return context.contextNode.kind === 155;
            };
            Rules.IsFunctionCallContext = function (context) {
                return context.contextNode.kind === 158;
            };
            Rules.IsNewContext = function (context) {
                return context.contextNode.kind === 159;
            };
            Rules.IsFunctionCallOrNewContext = function (context) {
                return Rules.IsFunctionCallContext(context) || Rules.IsNewContext(context);
            };
            Rules.IsPreviousTokenNotComma = function (context) {
                return context.currentTokenSpan.kind !== 23;
            };
            Rules.IsSameLineTokenContext = function (context) {
                return context.TokensAreOnSameLine();
            };
            Rules.IsEndOfDecoratorContextOnSameLine = function (context) {
                return context.TokensAreOnSameLine() &&
                    context.contextNode.decorators &&
                    Rules.NodeIsInDecoratorContext(context.currentTokenParent) &&
                    !Rules.NodeIsInDecoratorContext(context.nextTokenParent);
            };
            Rules.NodeIsInDecoratorContext = function (node) {
                while (ts.isExpression(node)) {
                    node = node.parent;
                }
                return node.kind === 131;
            };
            Rules.IsStartOfVariableDeclarationList = function (context) {
                return context.currentTokenParent.kind === 200 &&
                    context.currentTokenParent.getStart(context.sourceFile) === context.currentTokenSpan.pos;
            };
            Rules.IsNotFormatOnEnter = function (context) {
                return context.formattingRequestKind != 2;
            };
            Rules.IsModuleDeclContext = function (context) {
                return context.contextNode.kind === 206;
            };
            Rules.IsObjectTypeContext = function (context) {
                return context.contextNode.kind === 146;
            };
            Rules.IsTypeArgumentOrParameter = function (token, parent) {
                if (token.kind !== 24 && token.kind !== 25) {
                    return false;
                }
                switch (parent.kind) {
                    case 142:
                    case 202:
                    case 203:
                    case 201:
                    case 163:
                    case 164:
                    case 135:
                    case 134:
                    case 139:
                    case 140:
                    case 158:
                    case 159:
                        return true;
                    default:
                        return false;
                }
            };
            Rules.IsTypeArgumentOrParameterContext = function (context) {
                return Rules.IsTypeArgumentOrParameter(context.currentTokenSpan, context.currentTokenParent) ||
                    Rules.IsTypeArgumentOrParameter(context.nextTokenSpan, context.nextTokenParent);
            };
            Rules.IsVoidOpContext = function (context) {
                return context.currentTokenSpan.kind === 99 && context.currentTokenParent.kind === 167;
            };
            return Rules;
        })();
        formatting.Rules = Rules;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var RulesMap = (function () {
            function RulesMap() {
                this.map = [];
                this.mapRowLength = 0;
            }
            RulesMap.create = function (rules) {
                var result = new RulesMap();
                result.Initialize(rules);
                return result;
            };
            RulesMap.prototype.Initialize = function (rules) {
                this.mapRowLength = 126 + 1;
                this.map = new Array(this.mapRowLength * this.mapRowLength);
                var rulesBucketConstructionStateList = new Array(this.map.length);
                this.FillRules(rules, rulesBucketConstructionStateList);
                return this.map;
            };
            RulesMap.prototype.FillRules = function (rules, rulesBucketConstructionStateList) {
                var _this = this;
                rules.forEach(function (rule) {
                    _this.FillRule(rule, rulesBucketConstructionStateList);
                });
            };
            RulesMap.prototype.GetRuleBucketIndex = function (row, column) {
                var rulesBucketIndex = (row * this.mapRowLength) + column;
                return rulesBucketIndex;
            };
            RulesMap.prototype.FillRule = function (rule, rulesBucketConstructionStateList) {
                var _this = this;
                var specificRule = rule.Descriptor.LeftTokenRange != formatting.Shared.TokenRange.Any &&
                    rule.Descriptor.RightTokenRange != formatting.Shared.TokenRange.Any;
                rule.Descriptor.LeftTokenRange.GetTokens().forEach(function (left) {
                    rule.Descriptor.RightTokenRange.GetTokens().forEach(function (right) {
                        var rulesBucketIndex = _this.GetRuleBucketIndex(left, right);
                        var rulesBucket = _this.map[rulesBucketIndex];
                        if (rulesBucket == undefined) {
                            rulesBucket = _this.map[rulesBucketIndex] = new RulesBucket();
                        }
                        rulesBucket.AddRule(rule, specificRule, rulesBucketConstructionStateList, rulesBucketIndex);
                    });
                });
            };
            RulesMap.prototype.GetRule = function (context) {
                var bucketIndex = this.GetRuleBucketIndex(context.currentTokenSpan.kind, context.nextTokenSpan.kind);
                var bucket = this.map[bucketIndex];
                if (bucket != null) {
                    for (var _i = 0, _a = bucket.Rules(); _i < _a.length; _i++) {
                        var rule = _a[_i];
                        if (rule.Operation.Context.InContext(context)) {
                            return rule;
                        }
                    }
                }
                return null;
            };
            return RulesMap;
        })();
        formatting.RulesMap = RulesMap;
        var MaskBitSize = 5;
        var Mask = 0x1f;
        (function (RulesPosition) {
            RulesPosition[RulesPosition["IgnoreRulesSpecific"] = 0] = "IgnoreRulesSpecific";
            RulesPosition[RulesPosition["IgnoreRulesAny"] = MaskBitSize * 1] = "IgnoreRulesAny";
            RulesPosition[RulesPosition["ContextRulesSpecific"] = MaskBitSize * 2] = "ContextRulesSpecific";
            RulesPosition[RulesPosition["ContextRulesAny"] = MaskBitSize * 3] = "ContextRulesAny";
            RulesPosition[RulesPosition["NoContextRulesSpecific"] = MaskBitSize * 4] = "NoContextRulesSpecific";
            RulesPosition[RulesPosition["NoContextRulesAny"] = MaskBitSize * 5] = "NoContextRulesAny";
        })(formatting.RulesPosition || (formatting.RulesPosition = {}));
        var RulesPosition = formatting.RulesPosition;
        var RulesBucketConstructionState = (function () {
            function RulesBucketConstructionState() {
                this.rulesInsertionIndexBitmap = 0;
            }
            RulesBucketConstructionState.prototype.GetInsertionIndex = function (maskPosition) {
                var index = 0;
                var pos = 0;
                var indexBitmap = this.rulesInsertionIndexBitmap;
                while (pos <= maskPosition) {
                    index += (indexBitmap & Mask);
                    indexBitmap >>= MaskBitSize;
                    pos += MaskBitSize;
                }
                return index;
            };
            RulesBucketConstructionState.prototype.IncreaseInsertionIndex = function (maskPosition) {
                var value = (this.rulesInsertionIndexBitmap >> maskPosition) & Mask;
                value++;
                ts.Debug.assert((value & Mask) == value, "Adding more rules into the sub-bucket than allowed. Maximum allowed is 32 rules.");
                var temp = this.rulesInsertionIndexBitmap & ~(Mask << maskPosition);
                temp |= value << maskPosition;
                this.rulesInsertionIndexBitmap = temp;
            };
            return RulesBucketConstructionState;
        })();
        formatting.RulesBucketConstructionState = RulesBucketConstructionState;
        var RulesBucket = (function () {
            function RulesBucket() {
                this.rules = [];
            }
            RulesBucket.prototype.Rules = function () {
                return this.rules;
            };
            RulesBucket.prototype.AddRule = function (rule, specificTokens, constructionState, rulesBucketIndex) {
                var position;
                if (rule.Operation.Action == 1) {
                    position = specificTokens ?
                        RulesPosition.IgnoreRulesSpecific :
                        RulesPosition.IgnoreRulesAny;
                }
                else if (!rule.Operation.Context.IsAny()) {
                    position = specificTokens ?
                        RulesPosition.ContextRulesSpecific :
                        RulesPosition.ContextRulesAny;
                }
                else {
                    position = specificTokens ?
                        RulesPosition.NoContextRulesSpecific :
                        RulesPosition.NoContextRulesAny;
                }
                var state = constructionState[rulesBucketIndex];
                if (state === undefined) {
                    state = constructionState[rulesBucketIndex] = new RulesBucketConstructionState();
                }
                var index = state.GetInsertionIndex(position);
                this.rules.splice(index, 0, rule);
                state.IncreaseInsertionIndex(position);
            };
            return RulesBucket;
        })();
        formatting.RulesBucket = RulesBucket;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var Shared;
        (function (Shared) {
            var TokenRangeAccess = (function () {
                function TokenRangeAccess(from, to, except) {
                    this.tokens = [];
                    for (var token = from; token <= to; token++) {
                        if (except.indexOf(token) < 0) {
                            this.tokens.push(token);
                        }
                    }
                }
                TokenRangeAccess.prototype.GetTokens = function () {
                    return this.tokens;
                };
                TokenRangeAccess.prototype.Contains = function (token) {
                    return this.tokens.indexOf(token) >= 0;
                };
                return TokenRangeAccess;
            })();
            Shared.TokenRangeAccess = TokenRangeAccess;
            var TokenValuesAccess = (function () {
                function TokenValuesAccess(tks) {
                    this.tokens = tks && tks.length ? tks : [];
                }
                TokenValuesAccess.prototype.GetTokens = function () {
                    return this.tokens;
                };
                TokenValuesAccess.prototype.Contains = function (token) {
                    return this.tokens.indexOf(token) >= 0;
                };
                return TokenValuesAccess;
            })();
            Shared.TokenValuesAccess = TokenValuesAccess;
            var TokenSingleValueAccess = (function () {
                function TokenSingleValueAccess(token) {
                    this.token = token;
                }
                TokenSingleValueAccess.prototype.GetTokens = function () {
                    return [this.token];
                };
                TokenSingleValueAccess.prototype.Contains = function (tokenValue) {
                    return tokenValue == this.token;
                };
                return TokenSingleValueAccess;
            })();
            Shared.TokenSingleValueAccess = TokenSingleValueAccess;
            var TokenAllAccess = (function () {
                function TokenAllAccess() {
                }
                TokenAllAccess.prototype.GetTokens = function () {
                    var result = [];
                    for (var token = 0; token <= 126; token++) {
                        result.push(token);
                    }
                    return result;
                };
                TokenAllAccess.prototype.Contains = function (tokenValue) {
                    return true;
                };
                TokenAllAccess.prototype.toString = function () {
                    return "[allTokens]";
                };
                return TokenAllAccess;
            })();
            Shared.TokenAllAccess = TokenAllAccess;
            var TokenRange = (function () {
                function TokenRange(tokenAccess) {
                    this.tokenAccess = tokenAccess;
                }
                TokenRange.FromToken = function (token) {
                    return new TokenRange(new TokenSingleValueAccess(token));
                };
                TokenRange.FromTokens = function (tokens) {
                    return new TokenRange(new TokenValuesAccess(tokens));
                };
                TokenRange.FromRange = function (f, to, except) {
                    if (except === void 0) { except = []; }
                    return new TokenRange(new TokenRangeAccess(f, to, except));
                };
                TokenRange.AllTokens = function () {
                    return new TokenRange(new TokenAllAccess());
                };
                TokenRange.prototype.GetTokens = function () {
                    return this.tokenAccess.GetTokens();
                };
                TokenRange.prototype.Contains = function (token) {
                    return this.tokenAccess.Contains(token);
                };
                TokenRange.prototype.toString = function () {
                    return this.tokenAccess.toString();
                };
                TokenRange.Any = TokenRange.AllTokens();
                TokenRange.AnyIncludingMultilineComments = TokenRange.FromTokens(TokenRange.Any.GetTokens().concat([3]));
                TokenRange.Keywords = TokenRange.FromRange(66, 126);
                TokenRange.BinaryOperators = TokenRange.FromRange(24, 64);
                TokenRange.BinaryKeywordOperators = TokenRange.FromTokens([86, 87, 126]);
                TokenRange.UnaryPrefixOperators = TokenRange.FromTokens([38, 39, 47, 46]);
                TokenRange.UnaryPrefixExpressions = TokenRange.FromTokens([7, 65, 16, 18, 14, 93, 88]);
                TokenRange.UnaryPreincrementExpressions = TokenRange.FromTokens([65, 16, 93, 88]);
                TokenRange.UnaryPostincrementExpressions = TokenRange.FromTokens([65, 17, 19, 88]);
                TokenRange.UnaryPredecrementExpressions = TokenRange.FromTokens([65, 16, 93, 88]);
                TokenRange.UnaryPostdecrementExpressions = TokenRange.FromTokens([65, 17, 19, 88]);
                TokenRange.Comments = TokenRange.FromTokens([2, 3]);
                TokenRange.TypeNames = TokenRange.FromTokens([65, 120, 122, 113, 123, 99, 112]);
                return TokenRange;
            })();
            Shared.TokenRange = TokenRange;
        })(Shared = formatting.Shared || (formatting.Shared = {}));
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='..\services.ts' />
///<reference path='formattingContext.ts' />
///<reference path='formattingRequestKind.ts' />
///<reference path='rule.ts' />
///<reference path='ruleAction.ts' />
///<reference path='ruleDescriptor.ts' />
///<reference path='ruleFlag.ts' />
///<reference path='ruleOperation.ts' />
///<reference path='ruleOperationContext.ts' />
///<reference path='rules.ts' />
///<reference path='rulesMap.ts' />
///<reference path='tokenRange.ts' /> 
/// <reference path="references.ts"/>
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var RulesProvider = (function () {
            function RulesProvider() {
                this.globalRules = new formatting.Rules();
            }
            RulesProvider.prototype.getRuleName = function (rule) {
                return this.globalRules.getRuleName(rule);
            };
            RulesProvider.prototype.getRuleByName = function (name) {
                return this.globalRules[name];
            };
            RulesProvider.prototype.getRulesMap = function () {
                return this.rulesMap;
            };
            RulesProvider.prototype.ensureUpToDate = function (options) {
                if (this.options == null || !ts.compareDataObjects(this.options, options)) {
                    var activeRules = this.createActiveRules(options);
                    var rulesMap = formatting.RulesMap.create(activeRules);
                    this.activeRules = activeRules;
                    this.rulesMap = rulesMap;
                    this.options = ts.clone(options);
                }
            };
            RulesProvider.prototype.createActiveRules = function (options) {
                var rules = this.globalRules.HighPriorityCommonRules.slice(0);
                if (options.InsertSpaceAfterCommaDelimiter) {
                    rules.push(this.globalRules.SpaceAfterComma);
                }
                else {
                    rules.push(this.globalRules.NoSpaceAfterComma);
                }
                if (options.InsertSpaceAfterFunctionKeywordForAnonymousFunctions) {
                    rules.push(this.globalRules.SpaceAfterAnonymousFunctionKeyword);
                }
                else {
                    rules.push(this.globalRules.NoSpaceAfterAnonymousFunctionKeyword);
                }
                if (options.InsertSpaceAfterKeywordsInControlFlowStatements) {
                    rules.push(this.globalRules.SpaceAfterKeywordInControl);
                }
                else {
                    rules.push(this.globalRules.NoSpaceAfterKeywordInControl);
                }
                if (options.InsertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis) {
                    rules.push(this.globalRules.SpaceAfterOpenParen);
                    rules.push(this.globalRules.SpaceBeforeCloseParen);
                    rules.push(this.globalRules.NoSpaceBetweenParens);
                }
                else {
                    rules.push(this.globalRules.NoSpaceAfterOpenParen);
                    rules.push(this.globalRules.NoSpaceBeforeCloseParen);
                    rules.push(this.globalRules.NoSpaceBetweenParens);
                }
                if (options.InsertSpaceAfterSemicolonInForStatements) {
                    rules.push(this.globalRules.SpaceAfterSemicolonInFor);
                }
                else {
                    rules.push(this.globalRules.NoSpaceAfterSemicolonInFor);
                }
                if (options.InsertSpaceBeforeAndAfterBinaryOperators) {
                    rules.push(this.globalRules.SpaceBeforeBinaryOperator);
                    rules.push(this.globalRules.SpaceAfterBinaryOperator);
                }
                else {
                    rules.push(this.globalRules.NoSpaceBeforeBinaryOperator);
                    rules.push(this.globalRules.NoSpaceAfterBinaryOperator);
                }
                if (options.PlaceOpenBraceOnNewLineForControlBlocks) {
                    rules.push(this.globalRules.NewLineBeforeOpenBraceInControl);
                }
                if (options.PlaceOpenBraceOnNewLineForFunctions) {
                    rules.push(this.globalRules.NewLineBeforeOpenBraceInFunction);
                    rules.push(this.globalRules.NewLineBeforeOpenBraceInTypeScriptDeclWithBlock);
                }
                rules = rules.concat(this.globalRules.LowPriorityCommonRules);
                return rules;
            };
            return RulesProvider;
        })();
        formatting.RulesProvider = RulesProvider;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='..\services.ts' />
///<reference path='formattingScanner.ts' />
///<reference path='rulesProvider.ts' />
///<reference path='references.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        function formatOnEnter(position, sourceFile, rulesProvider, options) {
            var line = sourceFile.getLineAndCharacterOfPosition(position).line;
            if (line === 0) {
                return [];
            }
            var span = {
                pos: ts.getStartPositionOfLine(line - 1, sourceFile),
                end: ts.getEndLinePosition(line, sourceFile) + 1
            };
            return formatSpan(span, sourceFile, options, rulesProvider, 2);
        }
        formatting.formatOnEnter = formatOnEnter;
        function formatOnSemicolon(position, sourceFile, rulesProvider, options) {
            return formatOutermostParent(position, 22, sourceFile, options, rulesProvider, 3);
        }
        formatting.formatOnSemicolon = formatOnSemicolon;
        function formatOnClosingCurly(position, sourceFile, rulesProvider, options) {
            return formatOutermostParent(position, 15, sourceFile, options, rulesProvider, 4);
        }
        formatting.formatOnClosingCurly = formatOnClosingCurly;
        function formatDocument(sourceFile, rulesProvider, options) {
            var span = {
                pos: 0,
                end: sourceFile.text.length
            };
            return formatSpan(span, sourceFile, options, rulesProvider, 0);
        }
        formatting.formatDocument = formatDocument;
        function formatSelection(start, end, sourceFile, rulesProvider, options) {
            var span = {
                pos: ts.getLineStartPositionForPosition(start, sourceFile),
                end: end
            };
            return formatSpan(span, sourceFile, options, rulesProvider, 1);
        }
        formatting.formatSelection = formatSelection;
        function formatOutermostParent(position, expectedLastToken, sourceFile, options, rulesProvider, requestKind) {
            var parent = findOutermostParent(position, expectedLastToken, sourceFile);
            if (!parent) {
                return [];
            }
            var span = {
                pos: ts.getLineStartPositionForPosition(parent.getStart(sourceFile), sourceFile),
                end: parent.end
            };
            return formatSpan(span, sourceFile, options, rulesProvider, requestKind);
        }
        function findOutermostParent(position, expectedTokenKind, sourceFile) {
            var precedingToken = ts.findPrecedingToken(position, sourceFile);
            if (!precedingToken ||
                precedingToken.kind !== expectedTokenKind ||
                position !== precedingToken.getEnd()) {
                return undefined;
            }
            var current = precedingToken;
            while (current &&
                current.parent &&
                current.parent.end === precedingToken.end &&
                !isListElement(current.parent, current)) {
                current = current.parent;
            }
            return current;
        }
        function isListElement(parent, node) {
            switch (parent.kind) {
                case 202:
                case 203:
                    return ts.rangeContainsRange(parent.members, node);
                case 206:
                    var body = parent.body;
                    return body && body.kind === 180 && ts.rangeContainsRange(body.statements, node);
                case 228:
                case 180:
                case 207:
                    return ts.rangeContainsRange(parent.statements, node);
                case 224:
                    return ts.rangeContainsRange(parent.block.statements, node);
            }
            return false;
        }
        function findEnclosingNode(range, sourceFile) {
            return find(sourceFile);
            function find(n) {
                var candidate = ts.forEachChild(n, function (c) { return ts.startEndContainsRange(c.getStart(sourceFile), c.end, range) && c; });
                if (candidate) {
                    var result = find(candidate);
                    if (result) {
                        return result;
                    }
                }
                return n;
            }
        }
        function prepareRangeContainsErrorFunction(errors, originalRange) {
            if (!errors.length) {
                return rangeHasNoErrors;
            }
            var sorted = errors
                .filter(function (d) { return ts.rangeOverlapsWithStartEnd(originalRange, d.start, d.start + d.length); })
                .sort(function (e1, e2) { return e1.start - e2.start; });
            if (!sorted.length) {
                return rangeHasNoErrors;
            }
            var index = 0;
            return function (r) {
                while (true) {
                    if (index >= sorted.length) {
                        return false;
                    }
                    var error = sorted[index];
                    if (r.end <= error.start) {
                        return false;
                    }
                    if (ts.startEndOverlapsWithStartEnd(r.pos, r.end, error.start, error.start + error.length)) {
                        return true;
                    }
                    index++;
                }
            };
            function rangeHasNoErrors(r) {
                return false;
            }
        }
        function getScanStartPosition(enclosingNode, originalRange, sourceFile) {
            var start = enclosingNode.getStart(sourceFile);
            if (start === originalRange.pos && enclosingNode.end === originalRange.end) {
                return start;
            }
            var precedingToken = ts.findPrecedingToken(originalRange.pos, sourceFile);
            if (!precedingToken) {
                return enclosingNode.pos;
            }
            if (precedingToken.end >= originalRange.pos) {
                return enclosingNode.pos;
            }
            return precedingToken.end;
        }
        function getOwnOrInheritedDelta(n, options, sourceFile) {
            var previousLine = -1;
            var childKind = 0;
            while (n) {
                var line = sourceFile.getLineAndCharacterOfPosition(n.getStart(sourceFile)).line;
                if (previousLine !== -1 && line !== previousLine) {
                    break;
                }
                if (formatting.SmartIndenter.shouldIndentChildNode(n.kind, childKind)) {
                    return options.IndentSize;
                }
                previousLine = line;
                childKind = n.kind;
                n = n.parent;
            }
            return 0;
        }
        function formatSpan(originalRange, sourceFile, options, rulesProvider, requestKind) {
            var rangeContainsError = prepareRangeContainsErrorFunction(sourceFile.parseDiagnostics, originalRange);
            var formattingContext = new formatting.FormattingContext(sourceFile, requestKind);
            var enclosingNode = findEnclosingNode(originalRange, sourceFile);
            var formattingScanner = formatting.getFormattingScanner(sourceFile, getScanStartPosition(enclosingNode, originalRange, sourceFile), originalRange.end);
            var initialIndentation = formatting.SmartIndenter.getIndentationForNode(enclosingNode, originalRange, sourceFile, options);
            var previousRangeHasError;
            var previousRange;
            var previousParent;
            var previousRangeStartLine;
            var lastIndentedLine;
            var indentationOnLastIndentedLine;
            var edits = [];
            formattingScanner.advance();
            if (formattingScanner.isOnToken()) {
                var startLine = sourceFile.getLineAndCharacterOfPosition(enclosingNode.getStart(sourceFile)).line;
                var undecoratedStartLine = startLine;
                if (enclosingNode.decorators) {
                    undecoratedStartLine = sourceFile.getLineAndCharacterOfPosition(ts.getNonDecoratorTokenPosOfNode(enclosingNode, sourceFile)).line;
                }
                var delta = getOwnOrInheritedDelta(enclosingNode, options, sourceFile);
                processNode(enclosingNode, enclosingNode, startLine, undecoratedStartLine, initialIndentation, delta);
            }
            formattingScanner.close();
            return edits;
            function tryComputeIndentationForListItem(startPos, endPos, parentStartLine, range, inheritedIndentation) {
                if (ts.rangeOverlapsWithStartEnd(range, startPos, endPos)) {
                    if (inheritedIndentation !== -1) {
                        return inheritedIndentation;
                    }
                }
                else {
                    var startLine = sourceFile.getLineAndCharacterOfPosition(startPos).line;
                    var startLinePosition = ts.getLineStartPositionForPosition(startPos, sourceFile);
                    var column = formatting.SmartIndenter.findFirstNonWhitespaceColumn(startLinePosition, startPos, sourceFile, options);
                    if (startLine !== parentStartLine || startPos === column) {
                        return column;
                    }
                }
                return -1;
            }
            function computeIndentation(node, startLine, inheritedIndentation, parent, parentDynamicIndentation, effectiveParentStartLine) {
                var indentation = inheritedIndentation;
                if (indentation === -1) {
                    if (isSomeBlock(node.kind)) {
                        if (isSomeBlock(parent.kind) ||
                            parent.kind === 228 ||
                            parent.kind === 221 ||
                            parent.kind === 222) {
                            indentation = parentDynamicIndentation.getIndentation() + parentDynamicIndentation.getDelta();
                        }
                        else {
                            indentation = parentDynamicIndentation.getIndentation();
                        }
                    }
                    else {
                        if (formatting.SmartIndenter.childStartsOnTheSameLineWithElseInIfStatement(parent, node, startLine, sourceFile)) {
                            indentation = parentDynamicIndentation.getIndentation();
                        }
                        else {
                            indentation = parentDynamicIndentation.getIndentation() + parentDynamicIndentation.getDelta();
                        }
                    }
                }
                var delta = formatting.SmartIndenter.shouldIndentChildNode(node.kind, 0) ? options.IndentSize : 0;
                if (effectiveParentStartLine === startLine) {
                    indentation = startLine === lastIndentedLine
                        ? indentationOnLastIndentedLine
                        : parentDynamicIndentation.getIndentation();
                    delta = Math.min(options.IndentSize, parentDynamicIndentation.getDelta() + delta);
                }
                return {
                    indentation: indentation,
                    delta: delta
                };
            }
            function getFirstNonDecoratorTokenOfNode(node) {
                if (node.modifiers && node.modifiers.length) {
                    return node.modifiers[0].kind;
                }
                switch (node.kind) {
                    case 202: return 69;
                    case 203: return 103;
                    case 201: return 83;
                    case 205: return 205;
                    case 137: return 116;
                    case 138: return 121;
                    case 135:
                        if (node.asteriskToken) {
                            return 35;
                        }
                    case 133:
                    case 130:
                        return node.name.kind;
                }
            }
            function getDynamicIndentation(node, nodeStartLine, indentation, delta) {
                return {
                    getIndentationForComment: function (kind) {
                        switch (kind) {
                            case 15:
                            case 19:
                                return indentation + delta;
                        }
                        return indentation;
                    },
                    getIndentationForToken: function (line, kind) {
                        if (nodeStartLine !== line && node.decorators) {
                            if (kind === getFirstNonDecoratorTokenOfNode(node)) {
                                return indentation;
                            }
                        }
                        switch (kind) {
                            case 14:
                            case 15:
                            case 18:
                            case 19:
                            case 76:
                            case 100:
                            case 52:
                                return indentation;
                            default:
                                return nodeStartLine !== line ? indentation + delta : indentation;
                        }
                    },
                    getIndentation: function () { return indentation; },
                    getDelta: function () { return delta; },
                    recomputeIndentation: function (lineAdded) {
                        if (node.parent && formatting.SmartIndenter.shouldIndentChildNode(node.parent.kind, node.kind)) {
                            if (lineAdded) {
                                indentation += options.IndentSize;
                            }
                            else {
                                indentation -= options.IndentSize;
                            }
                            if (formatting.SmartIndenter.shouldIndentChildNode(node.kind, 0)) {
                                delta = options.IndentSize;
                            }
                            else {
                                delta = 0;
                            }
                        }
                    }
                };
            }
            function processNode(node, contextNode, nodeStartLine, undecoratedNodeStartLine, indentation, delta) {
                if (!ts.rangeOverlapsWithStartEnd(originalRange, node.getStart(sourceFile), node.getEnd())) {
                    return;
                }
                var nodeDynamicIndentation = getDynamicIndentation(node, nodeStartLine, indentation, delta);
                var childContextNode = contextNode;
                ts.forEachChild(node, function (child) {
                    processChildNode(child, -1, node, nodeDynamicIndentation, nodeStartLine, undecoratedNodeStartLine, false);
                }, function (nodes) {
                    processChildNodes(nodes, node, nodeStartLine, nodeDynamicIndentation);
                });
                while (formattingScanner.isOnToken()) {
                    var tokenInfo = formattingScanner.readTokenInfo(node);
                    if (tokenInfo.token.end > node.end) {
                        break;
                    }
                    consumeTokenAndAdvanceScanner(tokenInfo, node, nodeDynamicIndentation);
                }
                function processChildNode(child, inheritedIndentation, parent, parentDynamicIndentation, parentStartLine, undecoratedParentStartLine, isListItem) {
                    var childStartPos = child.getStart(sourceFile);
                    var childStartLine = sourceFile.getLineAndCharacterOfPosition(childStartPos).line;
                    var undecoratedChildStartLine = childStartLine;
                    if (child.decorators) {
                        undecoratedChildStartLine = sourceFile.getLineAndCharacterOfPosition(ts.getNonDecoratorTokenPosOfNode(child, sourceFile)).line;
                    }
                    var childIndentationAmount = -1;
                    if (isListItem) {
                        childIndentationAmount = tryComputeIndentationForListItem(childStartPos, child.end, parentStartLine, originalRange, inheritedIndentation);
                        if (childIndentationAmount !== -1) {
                            inheritedIndentation = childIndentationAmount;
                        }
                    }
                    if (!ts.rangeOverlapsWithStartEnd(originalRange, child.pos, child.end)) {
                        return inheritedIndentation;
                    }
                    if (child.getFullWidth() === 0) {
                        return inheritedIndentation;
                    }
                    while (formattingScanner.isOnToken()) {
                        var tokenInfo = formattingScanner.readTokenInfo(node);
                        if (tokenInfo.token.end > childStartPos) {
                            break;
                        }
                        consumeTokenAndAdvanceScanner(tokenInfo, node, parentDynamicIndentation);
                    }
                    if (!formattingScanner.isOnToken()) {
                        return inheritedIndentation;
                    }
                    if (ts.isToken(child)) {
                        var tokenInfo = formattingScanner.readTokenInfo(child);
                        ts.Debug.assert(tokenInfo.token.end === child.end);
                        consumeTokenAndAdvanceScanner(tokenInfo, node, parentDynamicIndentation);
                        return inheritedIndentation;
                    }
                    var effectiveParentStartLine = child.kind === 131 ? childStartLine : undecoratedParentStartLine;
                    var childIndentation = computeIndentation(child, childStartLine, childIndentationAmount, node, parentDynamicIndentation, effectiveParentStartLine);
                    processNode(child, childContextNode, childStartLine, undecoratedChildStartLine, childIndentation.indentation, childIndentation.delta);
                    childContextNode = node;
                    return inheritedIndentation;
                }
                function processChildNodes(nodes, parent, parentStartLine, parentDynamicIndentation) {
                    var listStartToken = getOpenTokenForList(parent, nodes);
                    var listEndToken = getCloseTokenForOpenToken(listStartToken);
                    var listDynamicIndentation = parentDynamicIndentation;
                    var startLine = parentStartLine;
                    if (listStartToken !== 0) {
                        while (formattingScanner.isOnToken()) {
                            var tokenInfo = formattingScanner.readTokenInfo(parent);
                            if (tokenInfo.token.end > nodes.pos) {
                                break;
                            }
                            else if (tokenInfo.token.kind === listStartToken) {
                                startLine = sourceFile.getLineAndCharacterOfPosition(tokenInfo.token.pos).line;
                                var indentation_1 = computeIndentation(tokenInfo.token, startLine, -1, parent, parentDynamicIndentation, startLine);
                                listDynamicIndentation = getDynamicIndentation(parent, parentStartLine, indentation_1.indentation, indentation_1.delta);
                                consumeTokenAndAdvanceScanner(tokenInfo, parent, listDynamicIndentation);
                            }
                            else {
                                consumeTokenAndAdvanceScanner(tokenInfo, parent, parentDynamicIndentation);
                            }
                        }
                    }
                    var inheritedIndentation = -1;
                    for (var _i = 0; _i < nodes.length; _i++) {
                        var child = nodes[_i];
                        inheritedIndentation = processChildNode(child, inheritedIndentation, node, listDynamicIndentation, startLine, startLine, true);
                    }
                    if (listEndToken !== 0) {
                        if (formattingScanner.isOnToken()) {
                            var tokenInfo = formattingScanner.readTokenInfo(parent);
                            if (tokenInfo.token.kind === listEndToken && ts.rangeContainsRange(parent, tokenInfo.token)) {
                                consumeTokenAndAdvanceScanner(tokenInfo, parent, listDynamicIndentation);
                            }
                        }
                    }
                }
                function consumeTokenAndAdvanceScanner(currentTokenInfo, parent, dynamicIndentation) {
                    ts.Debug.assert(ts.rangeContainsRange(parent, currentTokenInfo.token));
                    var lastTriviaWasNewLine = formattingScanner.lastTrailingTriviaWasNewLine();
                    var indentToken = false;
                    if (currentTokenInfo.leadingTrivia) {
                        processTrivia(currentTokenInfo.leadingTrivia, parent, childContextNode, dynamicIndentation);
                    }
                    var lineAdded;
                    var isTokenInRange = ts.rangeContainsRange(originalRange, currentTokenInfo.token);
                    var tokenStart = sourceFile.getLineAndCharacterOfPosition(currentTokenInfo.token.pos);
                    if (isTokenInRange) {
                        var rangeHasError = rangeContainsError(currentTokenInfo.token);
                        var prevStartLine = previousRangeStartLine;
                        lineAdded = processRange(currentTokenInfo.token, tokenStart, parent, childContextNode, dynamicIndentation);
                        if (rangeHasError) {
                            indentToken = false;
                        }
                        else {
                            if (lineAdded !== undefined) {
                                indentToken = lineAdded;
                            }
                            else {
                                indentToken = lastTriviaWasNewLine && tokenStart.line !== prevStartLine;
                            }
                        }
                    }
                    if (currentTokenInfo.trailingTrivia) {
                        processTrivia(currentTokenInfo.trailingTrivia, parent, childContextNode, dynamicIndentation);
                    }
                    if (indentToken) {
                        var indentNextTokenOrTrivia = true;
                        if (currentTokenInfo.leadingTrivia) {
                            for (var _i = 0, _a = currentTokenInfo.leadingTrivia; _i < _a.length; _i++) {
                                var triviaItem = _a[_i];
                                if (!ts.rangeContainsRange(originalRange, triviaItem)) {
                                    continue;
                                }
                                switch (triviaItem.kind) {
                                    case 3:
                                        var commentIndentation = dynamicIndentation.getIndentationForComment(currentTokenInfo.token.kind);
                                        indentMultilineComment(triviaItem, commentIndentation, !indentNextTokenOrTrivia);
                                        indentNextTokenOrTrivia = false;
                                        break;
                                    case 2:
                                        if (indentNextTokenOrTrivia) {
                                            var commentIndentation_1 = dynamicIndentation.getIndentationForComment(currentTokenInfo.token.kind);
                                            insertIndentation(triviaItem.pos, commentIndentation_1, false);
                                            indentNextTokenOrTrivia = false;
                                        }
                                        break;
                                    case 4:
                                        indentNextTokenOrTrivia = true;
                                        break;
                                }
                            }
                        }
                        if (isTokenInRange && !rangeContainsError(currentTokenInfo.token)) {
                            var tokenIndentation = dynamicIndentation.getIndentationForToken(tokenStart.line, currentTokenInfo.token.kind);
                            insertIndentation(currentTokenInfo.token.pos, tokenIndentation, lineAdded);
                            lastIndentedLine = tokenStart.line;
                            indentationOnLastIndentedLine = tokenIndentation;
                        }
                    }
                    formattingScanner.advance();
                    childContextNode = parent;
                }
            }
            function processTrivia(trivia, parent, contextNode, dynamicIndentation) {
                for (var _i = 0; _i < trivia.length; _i++) {
                    var triviaItem = trivia[_i];
                    if (ts.isComment(triviaItem.kind) && ts.rangeContainsRange(originalRange, triviaItem)) {
                        var triviaItemStart = sourceFile.getLineAndCharacterOfPosition(triviaItem.pos);
                        processRange(triviaItem, triviaItemStart, parent, contextNode, dynamicIndentation);
                    }
                }
            }
            function processRange(range, rangeStart, parent, contextNode, dynamicIndentation) {
                var rangeHasError = rangeContainsError(range);
                var lineAdded;
                if (!rangeHasError && !previousRangeHasError) {
                    if (!previousRange) {
                        var originalStart = sourceFile.getLineAndCharacterOfPosition(originalRange.pos);
                        trimTrailingWhitespacesForLines(originalStart.line, rangeStart.line);
                    }
                    else {
                        lineAdded =
                            processPair(range, rangeStart.line, parent, previousRange, previousRangeStartLine, previousParent, contextNode, dynamicIndentation);
                    }
                }
                previousRange = range;
                previousParent = parent;
                previousRangeStartLine = rangeStart.line;
                previousRangeHasError = rangeHasError;
                return lineAdded;
            }
            function processPair(currentItem, currentStartLine, currentParent, previousItem, previousStartLine, previousParent, contextNode, dynamicIndentation) {
                formattingContext.updateContext(previousItem, previousParent, currentItem, currentParent, contextNode);
                var rule = rulesProvider.getRulesMap().GetRule(formattingContext);
                var trimTrailingWhitespaces;
                var lineAdded;
                if (rule) {
                    applyRuleEdits(rule, previousItem, previousStartLine, currentItem, currentStartLine);
                    if (rule.Operation.Action & (2 | 8) && currentStartLine !== previousStartLine) {
                        lineAdded = false;
                        if (currentParent.getStart(sourceFile) === currentItem.pos) {
                            dynamicIndentation.recomputeIndentation(false);
                        }
                    }
                    else if (rule.Operation.Action & 4 && currentStartLine === previousStartLine) {
                        lineAdded = true;
                        if (currentParent.getStart(sourceFile) === currentItem.pos) {
                            dynamicIndentation.recomputeIndentation(true);
                        }
                    }
                    trimTrailingWhitespaces =
                        (rule.Operation.Action & (4 | 2)) &&
                            rule.Flag !== 1;
                }
                else {
                    trimTrailingWhitespaces = true;
                }
                if (currentStartLine !== previousStartLine && trimTrailingWhitespaces) {
                    trimTrailingWhitespacesForLines(previousStartLine, currentStartLine, previousItem);
                }
                return lineAdded;
            }
            function insertIndentation(pos, indentation, lineAdded) {
                var indentationString = getIndentationString(indentation, options);
                if (lineAdded) {
                    recordReplace(pos, 0, indentationString);
                }
                else {
                    var tokenStart = sourceFile.getLineAndCharacterOfPosition(pos);
                    if (indentation !== tokenStart.character) {
                        var startLinePosition = ts.getStartPositionOfLine(tokenStart.line, sourceFile);
                        recordReplace(startLinePosition, tokenStart.character, indentationString);
                    }
                }
            }
            function indentMultilineComment(commentRange, indentation, firstLineIsIndented) {
                var startLine = sourceFile.getLineAndCharacterOfPosition(commentRange.pos).line;
                var endLine = sourceFile.getLineAndCharacterOfPosition(commentRange.end).line;
                var parts;
                if (startLine === endLine) {
                    if (!firstLineIsIndented) {
                        insertIndentation(commentRange.pos, indentation, false);
                    }
                    return;
                }
                else {
                    parts = [];
                    var startPos = commentRange.pos;
                    for (var line = startLine; line < endLine; ++line) {
                        var endOfLine = ts.getEndLinePosition(line, sourceFile);
                        parts.push({ pos: startPos, end: endOfLine });
                        startPos = ts.getStartPositionOfLine(line + 1, sourceFile);
                    }
                    parts.push({ pos: startPos, end: commentRange.end });
                }
                var startLinePos = ts.getStartPositionOfLine(startLine, sourceFile);
                var nonWhitespaceColumnInFirstPart = formatting.SmartIndenter.findFirstNonWhitespaceCharacterAndColumn(startLinePos, parts[0].pos, sourceFile, options);
                if (indentation === nonWhitespaceColumnInFirstPart.column) {
                    return;
                }
                var startIndex = 0;
                if (firstLineIsIndented) {
                    startIndex = 1;
                    startLine++;
                }
                var delta = indentation - nonWhitespaceColumnInFirstPart.column;
                for (var i = startIndex, len = parts.length; i < len; ++i, ++startLine) {
                    var startLinePos_1 = ts.getStartPositionOfLine(startLine, sourceFile);
                    var nonWhitespaceCharacterAndColumn = i === 0
                        ? nonWhitespaceColumnInFirstPart
                        : formatting.SmartIndenter.findFirstNonWhitespaceCharacterAndColumn(parts[i].pos, parts[i].end, sourceFile, options);
                    var newIndentation = nonWhitespaceCharacterAndColumn.column + delta;
                    if (newIndentation > 0) {
                        var indentationString = getIndentationString(newIndentation, options);
                        recordReplace(startLinePos_1, nonWhitespaceCharacterAndColumn.character, indentationString);
                    }
                    else {
                        recordDelete(startLinePos_1, nonWhitespaceCharacterAndColumn.character);
                    }
                }
            }
            function trimTrailingWhitespacesForLines(line1, line2, range) {
                for (var line = line1; line < line2; ++line) {
                    var lineStartPosition = ts.getStartPositionOfLine(line, sourceFile);
                    var lineEndPosition = ts.getEndLinePosition(line, sourceFile);
                    if (range && ts.isComment(range.kind) && range.pos <= lineEndPosition && range.end > lineEndPosition) {
                        continue;
                    }
                    var pos = lineEndPosition;
                    while (pos >= lineStartPosition && ts.isWhiteSpace(sourceFile.text.charCodeAt(pos))) {
                        pos--;
                    }
                    if (pos !== lineEndPosition) {
                        ts.Debug.assert(pos === lineStartPosition || !ts.isWhiteSpace(sourceFile.text.charCodeAt(pos)));
                        recordDelete(pos + 1, lineEndPosition - pos);
                    }
                }
            }
            function newTextChange(start, len, newText) {
                return { span: ts.createTextSpan(start, len), newText: newText };
            }
            function recordDelete(start, len) {
                if (len) {
                    edits.push(newTextChange(start, len, ""));
                }
            }
            function recordReplace(start, len, newText) {
                if (len || newText) {
                    edits.push(newTextChange(start, len, newText));
                }
            }
            function applyRuleEdits(rule, previousRange, previousStartLine, currentRange, currentStartLine) {
                var between;
                switch (rule.Operation.Action) {
                    case 1:
                        return;
                    case 8:
                        if (previousRange.end !== currentRange.pos) {
                            recordDelete(previousRange.end, currentRange.pos - previousRange.end);
                        }
                        break;
                    case 4:
                        if (rule.Flag !== 1 && previousStartLine !== currentStartLine) {
                            return;
                        }
                        var lineDelta = currentStartLine - previousStartLine;
                        if (lineDelta !== 1) {
                            recordReplace(previousRange.end, currentRange.pos - previousRange.end, options.NewLineCharacter);
                        }
                        break;
                    case 2:
                        if (rule.Flag !== 1 && previousStartLine !== currentStartLine) {
                            return;
                        }
                        var posDelta = currentRange.pos - previousRange.end;
                        if (posDelta !== 1 || sourceFile.text.charCodeAt(previousRange.end) !== 32) {
                            recordReplace(previousRange.end, currentRange.pos - previousRange.end, " ");
                        }
                        break;
                }
            }
        }
        function isSomeBlock(kind) {
            switch (kind) {
                case 180:
                case 207:
                    return true;
            }
            return false;
        }
        function getOpenTokenForList(node, list) {
            switch (node.kind) {
                case 136:
                case 201:
                case 163:
                case 135:
                case 134:
                case 164:
                    if (node.typeParameters === list) {
                        return 24;
                    }
                    else if (node.parameters === list) {
                        return 16;
                    }
                    break;
                case 158:
                case 159:
                    if (node.typeArguments === list) {
                        return 24;
                    }
                    else if (node.arguments === list) {
                        return 16;
                    }
                    break;
                case 142:
                    if (node.typeArguments === list) {
                        return 24;
                    }
            }
            return 0;
        }
        function getCloseTokenForOpenToken(kind) {
            switch (kind) {
                case 16:
                    return 17;
                case 24:
                    return 25;
            }
            return 0;
        }
        var internedSizes;
        var internedTabsIndentation;
        var internedSpacesIndentation;
        function getIndentationString(indentation, options) {
            var resetInternedStrings = !internedSizes || (internedSizes.tabSize !== options.TabSize || internedSizes.indentSize !== options.IndentSize);
            if (resetInternedStrings) {
                internedSizes = { tabSize: options.TabSize, indentSize: options.IndentSize };
                internedTabsIndentation = internedSpacesIndentation = undefined;
            }
            if (!options.ConvertTabsToSpaces) {
                var tabs = Math.floor(indentation / options.TabSize);
                var spaces = indentation - tabs * options.TabSize;
                var tabString;
                if (!internedTabsIndentation) {
                    internedTabsIndentation = [];
                }
                if (internedTabsIndentation[tabs] === undefined) {
                    internedTabsIndentation[tabs] = tabString = repeat('\t', tabs);
                }
                else {
                    tabString = internedTabsIndentation[tabs];
                }
                return spaces ? tabString + repeat(" ", spaces) : tabString;
            }
            else {
                var spacesString;
                var quotient = Math.floor(indentation / options.IndentSize);
                var remainder = indentation % options.IndentSize;
                if (!internedSpacesIndentation) {
                    internedSpacesIndentation = [];
                }
                if (internedSpacesIndentation[quotient] === undefined) {
                    spacesString = repeat(" ", options.IndentSize * quotient);
                    internedSpacesIndentation[quotient] = spacesString;
                }
                else {
                    spacesString = internedSpacesIndentation[quotient];
                }
                return remainder ? spacesString + repeat(" ", remainder) : spacesString;
            }
            function repeat(value, count) {
                var s = "";
                for (var i = 0; i < count; ++i) {
                    s += value;
                }
                return s;
            }
        }
        formatting.getIndentationString = getIndentationString;
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
///<reference path='..\services.ts' />
var ts;
(function (ts) {
    var formatting;
    (function (formatting) {
        var SmartIndenter;
        (function (SmartIndenter) {
            function getIndentation(position, sourceFile, options) {
                if (position > sourceFile.text.length) {
                    return 0;
                }
                var precedingToken = ts.findPrecedingToken(position, sourceFile);
                if (!precedingToken) {
                    return 0;
                }
                var precedingTokenIsLiteral = precedingToken.kind === 8 ||
                    precedingToken.kind === 9 ||
                    precedingToken.kind === 10 ||
                    precedingToken.kind === 11 ||
                    precedingToken.kind === 12 ||
                    precedingToken.kind === 13;
                if (precedingTokenIsLiteral && precedingToken.getStart(sourceFile) <= position && precedingToken.end > position) {
                    return 0;
                }
                var lineAtPosition = sourceFile.getLineAndCharacterOfPosition(position).line;
                if (precedingToken.kind === 23 && precedingToken.parent.kind !== 170) {
                    var actualIndentation = getActualIndentationForListItemBeforeComma(precedingToken, sourceFile, options);
                    if (actualIndentation !== -1) {
                        return actualIndentation;
                    }
                }
                var previous;
                var current = precedingToken;
                var currentStart;
                var indentationDelta;
                while (current) {
                    if (ts.positionBelongsToNode(current, position, sourceFile) && shouldIndentChildNode(current.kind, previous ? previous.kind : 0)) {
                        currentStart = getStartLineAndCharacterForNode(current, sourceFile);
                        if (nextTokenIsCurlyBraceOnSameLineAsCursor(precedingToken, current, lineAtPosition, sourceFile)) {
                            indentationDelta = 0;
                        }
                        else {
                            indentationDelta = lineAtPosition !== currentStart.line ? options.IndentSize : 0;
                        }
                        break;
                    }
                    var actualIndentation = getActualIndentationForListItem(current, sourceFile, options);
                    if (actualIndentation !== -1) {
                        return actualIndentation;
                    }
                    previous = current;
                    current = current.parent;
                }
                if (!current) {
                    return 0;
                }
                return getIndentationForNodeWorker(current, currentStart, undefined, indentationDelta, sourceFile, options);
            }
            SmartIndenter.getIndentation = getIndentation;
            function getIndentationForNode(n, ignoreActualIndentationRange, sourceFile, options) {
                var start = sourceFile.getLineAndCharacterOfPosition(n.getStart(sourceFile));
                return getIndentationForNodeWorker(n, start, ignoreActualIndentationRange, 0, sourceFile, options);
            }
            SmartIndenter.getIndentationForNode = getIndentationForNode;
            function getIndentationForNodeWorker(current, currentStart, ignoreActualIndentationRange, indentationDelta, sourceFile, options) {
                var parent = current.parent;
                var parentStart;
                while (parent) {
                    var useActualIndentation = true;
                    if (ignoreActualIndentationRange) {
                        var start = current.getStart(sourceFile);
                        useActualIndentation = start < ignoreActualIndentationRange.pos || start > ignoreActualIndentationRange.end;
                    }
                    if (useActualIndentation) {
                        var actualIndentation = getActualIndentationForListItem(current, sourceFile, options);
                        if (actualIndentation !== -1) {
                            return actualIndentation + indentationDelta;
                        }
                    }
                    parentStart = getParentStart(parent, current, sourceFile);
                    var parentAndChildShareLine = parentStart.line === currentStart.line ||
                        childStartsOnTheSameLineWithElseInIfStatement(parent, current, currentStart.line, sourceFile);
                    if (useActualIndentation) {
                        var actualIndentation = getActualIndentationForNode(current, parent, currentStart, parentAndChildShareLine, sourceFile, options);
                        if (actualIndentation !== -1) {
                            return actualIndentation + indentationDelta;
                        }
                    }
                    if (shouldIndentChildNode(parent.kind, current.kind) && !parentAndChildShareLine) {
                        indentationDelta += options.IndentSize;
                    }
                    current = parent;
                    currentStart = parentStart;
                    parent = current.parent;
                }
                return indentationDelta;
            }
            function getParentStart(parent, child, sourceFile) {
                var containingList = getContainingList(child, sourceFile);
                if (containingList) {
                    return sourceFile.getLineAndCharacterOfPosition(containingList.pos);
                }
                return sourceFile.getLineAndCharacterOfPosition(parent.getStart(sourceFile));
            }
            function getActualIndentationForListItemBeforeComma(commaToken, sourceFile, options) {
                var commaItemInfo = ts.findListItemInfo(commaToken);
                if (commaItemInfo && commaItemInfo.listItemIndex > 0) {
                    return deriveActualIndentationFromList(commaItemInfo.list.getChildren(), commaItemInfo.listItemIndex - 1, sourceFile, options);
                }
                else {
                    return -1;
                }
            }
            function getActualIndentationForNode(current, parent, currentLineAndChar, parentAndChildShareLine, sourceFile, options) {
                var useActualIndentation = (ts.isDeclaration(current) || ts.isStatement(current)) &&
                    (parent.kind === 228 || !parentAndChildShareLine);
                if (!useActualIndentation) {
                    return -1;
                }
                return findColumnForFirstNonWhitespaceCharacterInLine(currentLineAndChar, sourceFile, options);
            }
            function nextTokenIsCurlyBraceOnSameLineAsCursor(precedingToken, current, lineAtPosition, sourceFile) {
                var nextToken = ts.findNextToken(precedingToken, current);
                if (!nextToken) {
                    return false;
                }
                if (nextToken.kind === 14) {
                    return true;
                }
                else if (nextToken.kind === 15) {
                    var nextTokenStartLine = getStartLineAndCharacterForNode(nextToken, sourceFile).line;
                    return lineAtPosition === nextTokenStartLine;
                }
                return false;
            }
            function getStartLineAndCharacterForNode(n, sourceFile) {
                return sourceFile.getLineAndCharacterOfPosition(n.getStart(sourceFile));
            }
            function childStartsOnTheSameLineWithElseInIfStatement(parent, child, childStartLine, sourceFile) {
                if (parent.kind === 184 && parent.elseStatement === child) {
                    var elseKeyword = ts.findChildOfKind(parent, 76, sourceFile);
                    ts.Debug.assert(elseKeyword !== undefined);
                    var elseKeywordStartLine = getStartLineAndCharacterForNode(elseKeyword, sourceFile).line;
                    return elseKeywordStartLine === childStartLine;
                }
                return false;
            }
            SmartIndenter.childStartsOnTheSameLineWithElseInIfStatement = childStartsOnTheSameLineWithElseInIfStatement;
            function getContainingList(node, sourceFile) {
                if (node.parent) {
                    switch (node.parent.kind) {
                        case 142:
                            if (node.parent.typeArguments &&
                                ts.rangeContainsStartEnd(node.parent.typeArguments, node.getStart(sourceFile), node.getEnd())) {
                                return node.parent.typeArguments;
                            }
                            break;
                        case 155:
                            return node.parent.properties;
                        case 154:
                            return node.parent.elements;
                        case 201:
                        case 163:
                        case 164:
                        case 135:
                        case 134:
                        case 139:
                        case 140: {
                            var start = node.getStart(sourceFile);
                            if (node.parent.typeParameters &&
                                ts.rangeContainsStartEnd(node.parent.typeParameters, start, node.getEnd())) {
                                return node.parent.typeParameters;
                            }
                            if (ts.rangeContainsStartEnd(node.parent.parameters, start, node.getEnd())) {
                                return node.parent.parameters;
                            }
                            break;
                        }
                        case 159:
                        case 158: {
                            var start = node.getStart(sourceFile);
                            if (node.parent.typeArguments &&
                                ts.rangeContainsStartEnd(node.parent.typeArguments, start, node.getEnd())) {
                                return node.parent.typeArguments;
                            }
                            if (node.parent.arguments &&
                                ts.rangeContainsStartEnd(node.parent.arguments, start, node.getEnd())) {
                                return node.parent.arguments;
                            }
                            break;
                        }
                    }
                }
                return undefined;
            }
            function getActualIndentationForListItem(node, sourceFile, options) {
                var containingList = getContainingList(node, sourceFile);
                return containingList ? getActualIndentationFromList(containingList) : -1;
                function getActualIndentationFromList(list) {
                    var index = ts.indexOf(list, node);
                    return index !== -1 ? deriveActualIndentationFromList(list, index, sourceFile, options) : -1;
                }
            }
            function deriveActualIndentationFromList(list, index, sourceFile, options) {
                ts.Debug.assert(index >= 0 && index < list.length);
                var node = list[index];
                var lineAndCharacter = getStartLineAndCharacterForNode(node, sourceFile);
                for (var i = index - 1; i >= 0; --i) {
                    if (list[i].kind === 23) {
                        continue;
                    }
                    var prevEndLine = sourceFile.getLineAndCharacterOfPosition(list[i].end).line;
                    if (prevEndLine !== lineAndCharacter.line) {
                        return findColumnForFirstNonWhitespaceCharacterInLine(lineAndCharacter, sourceFile, options);
                    }
                    lineAndCharacter = getStartLineAndCharacterForNode(list[i], sourceFile);
                }
                return -1;
            }
            function findColumnForFirstNonWhitespaceCharacterInLine(lineAndCharacter, sourceFile, options) {
                var lineStart = sourceFile.getPositionOfLineAndCharacter(lineAndCharacter.line, 0);
                return findFirstNonWhitespaceColumn(lineStart, lineStart + lineAndCharacter.character, sourceFile, options);
            }
            function findFirstNonWhitespaceCharacterAndColumn(startPos, endPos, sourceFile, options) {
                var character = 0;
                var column = 0;
                for (var pos = startPos; pos < endPos; ++pos) {
                    var ch = sourceFile.text.charCodeAt(pos);
                    if (!ts.isWhiteSpace(ch)) {
                        break;
                    }
                    if (ch === 9) {
                        column += options.TabSize + (column % options.TabSize);
                    }
                    else {
                        column++;
                    }
                    character++;
                }
                return { column: column, character: character };
            }
            SmartIndenter.findFirstNonWhitespaceCharacterAndColumn = findFirstNonWhitespaceCharacterAndColumn;
            function findFirstNonWhitespaceColumn(startPos, endPos, sourceFile, options) {
                return findFirstNonWhitespaceCharacterAndColumn(startPos, endPos, sourceFile, options).column;
            }
            SmartIndenter.findFirstNonWhitespaceColumn = findFirstNonWhitespaceColumn;
            function nodeContentIsAlwaysIndented(kind) {
                switch (kind) {
                    case 202:
                    case 203:
                    case 205:
                    case 154:
                    case 180:
                    case 207:
                    case 155:
                    case 146:
                    case 148:
                    case 208:
                    case 222:
                    case 221:
                    case 162:
                    case 158:
                    case 159:
                    case 181:
                    case 199:
                    case 215:
                    case 192:
                    case 171:
                    case 152:
                    case 151:
                        return true;
                }
                return false;
            }
            function shouldIndentChildNode(parent, child) {
                if (nodeContentIsAlwaysIndented(parent)) {
                    return true;
                }
                switch (parent) {
                    case 185:
                    case 186:
                    case 188:
                    case 189:
                    case 187:
                    case 184:
                    case 201:
                    case 163:
                    case 135:
                    case 134:
                    case 139:
                    case 164:
                    case 136:
                    case 137:
                    case 138:
                        return child !== 180;
                    default:
                        return false;
                }
            }
            SmartIndenter.shouldIndentChildNode = shouldIndentChildNode;
        })(SmartIndenter = formatting.SmartIndenter || (formatting.SmartIndenter = {}));
    })(formatting = ts.formatting || (ts.formatting = {}));
})(ts || (ts = {}));
/// <reference path="..\compiler\program.ts"/>
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
/// <reference path='breakpoints.ts' />
/// <reference path='outliningElementsCollector.ts' />
/// <reference path='navigateTo.ts' />
/// <reference path='navigationBar.ts' />
/// <reference path='patternMatcher.ts' />
/// <reference path='signatureHelp.ts' />
/// <reference path='utilities.ts' />
/// <reference path='formatting\formatting.ts' />
/// <reference path='formatting\smartIndenter.ts' />
var ts;
(function (ts) {
    ts.servicesVersion = "0.4";
    var ScriptSnapshot;
    (function (ScriptSnapshot) {
        var StringScriptSnapshot = (function () {
            function StringScriptSnapshot(text) {
                this.text = text;
                this._lineStartPositions = undefined;
            }
            StringScriptSnapshot.prototype.getText = function (start, end) {
                return this.text.substring(start, end);
            };
            StringScriptSnapshot.prototype.getLength = function () {
                return this.text.length;
            };
            StringScriptSnapshot.prototype.getChangeRange = function (oldSnapshot) {
                return undefined;
            };
            return StringScriptSnapshot;
        })();
        function fromString(text) {
            return new StringScriptSnapshot(text);
        }
        ScriptSnapshot.fromString = fromString;
    })(ScriptSnapshot = ts.ScriptSnapshot || (ts.ScriptSnapshot = {}));
    var scanner = ts.createScanner(2, true);
    var emptyArray = [];
    function createNode(kind, pos, end, flags, parent) {
        var node = new (ts.getNodeConstructor(kind))();
        node.pos = pos;
        node.end = end;
        node.flags = flags;
        node.parent = parent;
        return node;
    }
    var NodeObject = (function () {
        function NodeObject() {
        }
        NodeObject.prototype.getSourceFile = function () {
            return ts.getSourceFileOfNode(this);
        };
        NodeObject.prototype.getStart = function (sourceFile) {
            return ts.getTokenPosOfNode(this, sourceFile);
        };
        NodeObject.prototype.getFullStart = function () {
            return this.pos;
        };
        NodeObject.prototype.getEnd = function () {
            return this.end;
        };
        NodeObject.prototype.getWidth = function (sourceFile) {
            return this.getEnd() - this.getStart(sourceFile);
        };
        NodeObject.prototype.getFullWidth = function () {
            return this.end - this.getFullStart();
        };
        NodeObject.prototype.getLeadingTriviaWidth = function (sourceFile) {
            return this.getStart(sourceFile) - this.pos;
        };
        NodeObject.prototype.getFullText = function (sourceFile) {
            return (sourceFile || this.getSourceFile()).text.substring(this.pos, this.end);
        };
        NodeObject.prototype.getText = function (sourceFile) {
            return (sourceFile || this.getSourceFile()).text.substring(this.getStart(), this.getEnd());
        };
        NodeObject.prototype.addSyntheticNodes = function (nodes, pos, end) {
            scanner.setTextPos(pos);
            while (pos < end) {
                var token = scanner.scan();
                var textPos = scanner.getTextPos();
                nodes.push(createNode(token, pos, textPos, 1024, this));
                pos = textPos;
            }
            return pos;
        };
        NodeObject.prototype.createSyntaxList = function (nodes) {
            var list = createNode(229, nodes.pos, nodes.end, 1024, this);
            list._children = [];
            var pos = nodes.pos;
            for (var _i = 0; _i < nodes.length; _i++) {
                var node = nodes[_i];
                if (pos < node.pos) {
                    pos = this.addSyntheticNodes(list._children, pos, node.pos);
                }
                list._children.push(node);
                pos = node.end;
            }
            if (pos < nodes.end) {
                this.addSyntheticNodes(list._children, pos, nodes.end);
            }
            return list;
        };
        NodeObject.prototype.createChildren = function (sourceFile) {
            var _this = this;
            var children;
            if (this.kind >= 127) {
                scanner.setText((sourceFile || this.getSourceFile()).text);
                children = [];
                var pos = this.pos;
                var processNode = function (node) {
                    if (pos < node.pos) {
                        pos = _this.addSyntheticNodes(children, pos, node.pos);
                    }
                    children.push(node);
                    pos = node.end;
                };
                var processNodes = function (nodes) {
                    if (pos < nodes.pos) {
                        pos = _this.addSyntheticNodes(children, pos, nodes.pos);
                    }
                    children.push(_this.createSyntaxList(nodes));
                    pos = nodes.end;
                };
                ts.forEachChild(this, processNode, processNodes);
                if (pos < this.end) {
                    this.addSyntheticNodes(children, pos, this.end);
                }
                scanner.setText(undefined);
            }
            this._children = children || emptyArray;
        };
        NodeObject.prototype.getChildCount = function (sourceFile) {
            if (!this._children)
                this.createChildren(sourceFile);
            return this._children.length;
        };
        NodeObject.prototype.getChildAt = function (index, sourceFile) {
            if (!this._children)
                this.createChildren(sourceFile);
            return this._children[index];
        };
        NodeObject.prototype.getChildren = function (sourceFile) {
            if (!this._children)
                this.createChildren(sourceFile);
            return this._children;
        };
        NodeObject.prototype.getFirstToken = function (sourceFile) {
            var children = this.getChildren();
            for (var _i = 0; _i < children.length; _i++) {
                var child = children[_i];
                if (child.kind < 127) {
                    return child;
                }
                return child.getFirstToken(sourceFile);
            }
        };
        NodeObject.prototype.getLastToken = function (sourceFile) {
            var children = this.getChildren(sourceFile);
            for (var i = children.length - 1; i >= 0; i--) {
                var child = children[i];
                if (child.kind < 127) {
                    return child;
                }
                return child.getLastToken(sourceFile);
            }
        };
        return NodeObject;
    })();
    var SymbolObject = (function () {
        function SymbolObject(flags, name) {
            this.flags = flags;
            this.name = name;
        }
        SymbolObject.prototype.getFlags = function () {
            return this.flags;
        };
        SymbolObject.prototype.getName = function () {
            return this.name;
        };
        SymbolObject.prototype.getDeclarations = function () {
            return this.declarations;
        };
        SymbolObject.prototype.getDocumentationComment = function () {
            if (this.documentationComment === undefined) {
                this.documentationComment = getJsDocCommentsFromDeclarations(this.declarations, this.name, !(this.flags & 4));
            }
            return this.documentationComment;
        };
        return SymbolObject;
    })();
    function getJsDocCommentsFromDeclarations(declarations, name, canUseParsedParamTagComments) {
        var documentationComment = [];
        var docComments = getJsDocCommentsSeparatedByNewLines();
        ts.forEach(docComments, function (docComment) {
            if (documentationComment.length) {
                documentationComment.push(ts.lineBreakPart());
            }
            documentationComment.push(docComment);
        });
        return documentationComment;
        function getJsDocCommentsSeparatedByNewLines() {
            var paramTag = "@param";
            var jsDocCommentParts = [];
            ts.forEach(declarations, function (declaration, indexOfDeclaration) {
                if (ts.indexOf(declarations, declaration) === indexOfDeclaration) {
                    var sourceFileOfDeclaration = ts.getSourceFileOfNode(declaration);
                    if (canUseParsedParamTagComments && declaration.kind === 130) {
                        ts.forEach(getJsDocCommentTextRange(declaration.parent, sourceFileOfDeclaration), function (jsDocCommentTextRange) {
                            var cleanedParamJsDocComment = getCleanedParamJsDocComment(jsDocCommentTextRange.pos, jsDocCommentTextRange.end, sourceFileOfDeclaration);
                            if (cleanedParamJsDocComment) {
                                jsDocCommentParts.push.apply(jsDocCommentParts, cleanedParamJsDocComment);
                            }
                        });
                    }
                    if (declaration.kind === 206 && declaration.body.kind === 206) {
                        return;
                    }
                    while (declaration.kind === 206 && declaration.parent.kind === 206) {
                        declaration = declaration.parent;
                    }
                    ts.forEach(getJsDocCommentTextRange(declaration.kind === 199 ? declaration.parent.parent : declaration, sourceFileOfDeclaration), function (jsDocCommentTextRange) {
                        var cleanedJsDocComment = getCleanedJsDocComment(jsDocCommentTextRange.pos, jsDocCommentTextRange.end, sourceFileOfDeclaration);
                        if (cleanedJsDocComment) {
                            jsDocCommentParts.push.apply(jsDocCommentParts, cleanedJsDocComment);
                        }
                    });
                }
            });
            return jsDocCommentParts;
            function getJsDocCommentTextRange(node, sourceFile) {
                return ts.map(ts.getJsDocComments(node, sourceFile), function (jsDocComment) {
                    return {
                        pos: jsDocComment.pos + "/*".length,
                        end: jsDocComment.end - "*/".length
                    };
                });
            }
            function consumeWhiteSpacesOnTheLine(pos, end, sourceFile, maxSpacesToRemove) {
                if (maxSpacesToRemove !== undefined) {
                    end = Math.min(end, pos + maxSpacesToRemove);
                }
                for (; pos < end; pos++) {
                    var ch = sourceFile.text.charCodeAt(pos);
                    if (!ts.isWhiteSpace(ch) || ts.isLineBreak(ch)) {
                        return pos;
                    }
                }
                return end;
            }
            function consumeLineBreaks(pos, end, sourceFile) {
                while (pos < end && ts.isLineBreak(sourceFile.text.charCodeAt(pos))) {
                    pos++;
                }
                return pos;
            }
            function isName(pos, end, sourceFile, name) {
                return pos + name.length < end &&
                    sourceFile.text.substr(pos, name.length) === name &&
                    (ts.isWhiteSpace(sourceFile.text.charCodeAt(pos + name.length)) ||
                        ts.isLineBreak(sourceFile.text.charCodeAt(pos + name.length)));
            }
            function isParamTag(pos, end, sourceFile) {
                return isName(pos, end, sourceFile, paramTag);
            }
            function pushDocCommentLineText(docComments, text, blankLineCount) {
                while (blankLineCount--) {
                    docComments.push(ts.textPart(""));
                }
                docComments.push(ts.textPart(text));
            }
            function getCleanedJsDocComment(pos, end, sourceFile) {
                var spacesToRemoveAfterAsterisk;
                var docComments = [];
                var blankLineCount = 0;
                var isInParamTag = false;
                while (pos < end) {
                    var docCommentTextOfLine = "";
                    pos = consumeWhiteSpacesOnTheLine(pos, end, sourceFile);
                    if (pos < end && sourceFile.text.charCodeAt(pos) === 42) {
                        var lineStartPos = pos + 1;
                        pos = consumeWhiteSpacesOnTheLine(pos + 1, end, sourceFile, spacesToRemoveAfterAsterisk);
                        if (spacesToRemoveAfterAsterisk === undefined && pos < end && !ts.isLineBreak(sourceFile.text.charCodeAt(pos))) {
                            spacesToRemoveAfterAsterisk = pos - lineStartPos;
                        }
                    }
                    else if (spacesToRemoveAfterAsterisk === undefined) {
                        spacesToRemoveAfterAsterisk = 0;
                    }
                    while (pos < end && !ts.isLineBreak(sourceFile.text.charCodeAt(pos))) {
                        var ch = sourceFile.text.charAt(pos);
                        if (ch === "@") {
                            if (isParamTag(pos, end, sourceFile)) {
                                isInParamTag = true;
                                pos += paramTag.length;
                                continue;
                            }
                            else {
                                isInParamTag = false;
                            }
                        }
                        if (!isInParamTag) {
                            docCommentTextOfLine += ch;
                        }
                        pos++;
                    }
                    pos = consumeLineBreaks(pos, end, sourceFile);
                    if (docCommentTextOfLine) {
                        pushDocCommentLineText(docComments, docCommentTextOfLine, blankLineCount);
                        blankLineCount = 0;
                    }
                    else if (!isInParamTag && docComments.length) {
                        blankLineCount++;
                    }
                }
                return docComments;
            }
            function getCleanedParamJsDocComment(pos, end, sourceFile) {
                var paramHelpStringMargin;
                var paramDocComments = [];
                while (pos < end) {
                    if (isParamTag(pos, end, sourceFile)) {
                        var blankLineCount = 0;
                        var recordedParamTag = false;
                        pos = consumeWhiteSpaces(pos + paramTag.length);
                        if (pos >= end) {
                            break;
                        }
                        if (sourceFile.text.charCodeAt(pos) === 123) {
                            pos++;
                            for (var curlies = 1; pos < end; pos++) {
                                var charCode = sourceFile.text.charCodeAt(pos);
                                if (charCode === 123) {
                                    curlies++;
                                    continue;
                                }
                                if (charCode === 125) {
                                    curlies--;
                                    if (curlies === 0) {
                                        pos++;
                                        break;
                                    }
                                    else {
                                        continue;
                                    }
                                }
                                if (charCode === 64) {
                                    break;
                                }
                            }
                            pos = consumeWhiteSpaces(pos);
                            if (pos >= end) {
                                break;
                            }
                        }
                        if (isName(pos, end, sourceFile, name)) {
                            pos = consumeWhiteSpaces(pos + name.length);
                            if (pos >= end) {
                                break;
                            }
                            var paramHelpString = "";
                            var firstLineParamHelpStringPos = pos;
                            while (pos < end) {
                                var ch = sourceFile.text.charCodeAt(pos);
                                if (ts.isLineBreak(ch)) {
                                    if (paramHelpString) {
                                        pushDocCommentLineText(paramDocComments, paramHelpString, blankLineCount);
                                        paramHelpString = "";
                                        blankLineCount = 0;
                                        recordedParamTag = true;
                                    }
                                    else if (recordedParamTag) {
                                        blankLineCount++;
                                    }
                                    setPosForParamHelpStringOnNextLine(firstLineParamHelpStringPos);
                                    continue;
                                }
                                if (ch === 64) {
                                    break;
                                }
                                paramHelpString += sourceFile.text.charAt(pos);
                                pos++;
                            }
                            if (paramHelpString) {
                                pushDocCommentLineText(paramDocComments, paramHelpString, blankLineCount);
                            }
                            paramHelpStringMargin = undefined;
                        }
                        if (sourceFile.text.charCodeAt(pos) === 64) {
                            continue;
                        }
                    }
                    pos++;
                }
                return paramDocComments;
                function consumeWhiteSpaces(pos) {
                    while (pos < end && ts.isWhiteSpace(sourceFile.text.charCodeAt(pos))) {
                        pos++;
                    }
                    return pos;
                }
                function setPosForParamHelpStringOnNextLine(firstLineParamHelpStringPos) {
                    pos = consumeLineBreaks(pos, end, sourceFile);
                    if (pos >= end) {
                        return;
                    }
                    if (paramHelpStringMargin === undefined) {
                        paramHelpStringMargin = sourceFile.getLineAndCharacterOfPosition(firstLineParamHelpStringPos).character;
                    }
                    var startOfLinePos = pos;
                    pos = consumeWhiteSpacesOnTheLine(pos, end, sourceFile, paramHelpStringMargin);
                    if (pos >= end) {
                        return;
                    }
                    var consumedSpaces = pos - startOfLinePos;
                    if (consumedSpaces < paramHelpStringMargin) {
                        var ch = sourceFile.text.charCodeAt(pos);
                        if (ch === 42) {
                            pos = consumeWhiteSpacesOnTheLine(pos + 1, end, sourceFile, paramHelpStringMargin - consumedSpaces - 1);
                        }
                    }
                }
            }
        }
    }
    var TypeObject = (function () {
        function TypeObject(checker, flags) {
            this.checker = checker;
            this.flags = flags;
        }
        TypeObject.prototype.getFlags = function () {
            return this.flags;
        };
        TypeObject.prototype.getSymbol = function () {
            return this.symbol;
        };
        TypeObject.prototype.getProperties = function () {
            return this.checker.getPropertiesOfType(this);
        };
        TypeObject.prototype.getProperty = function (propertyName) {
            return this.checker.getPropertyOfType(this, propertyName);
        };
        TypeObject.prototype.getApparentProperties = function () {
            return this.checker.getAugmentedPropertiesOfType(this);
        };
        TypeObject.prototype.getCallSignatures = function () {
            return this.checker.getSignaturesOfType(this, 0);
        };
        TypeObject.prototype.getConstructSignatures = function () {
            return this.checker.getSignaturesOfType(this, 1);
        };
        TypeObject.prototype.getStringIndexType = function () {
            return this.checker.getIndexTypeOfType(this, 0);
        };
        TypeObject.prototype.getNumberIndexType = function () {
            return this.checker.getIndexTypeOfType(this, 1);
        };
        return TypeObject;
    })();
    var SignatureObject = (function () {
        function SignatureObject(checker) {
            this.checker = checker;
        }
        SignatureObject.prototype.getDeclaration = function () {
            return this.declaration;
        };
        SignatureObject.prototype.getTypeParameters = function () {
            return this.typeParameters;
        };
        SignatureObject.prototype.getParameters = function () {
            return this.parameters;
        };
        SignatureObject.prototype.getReturnType = function () {
            return this.checker.getReturnTypeOfSignature(this);
        };
        SignatureObject.prototype.getDocumentationComment = function () {
            if (this.documentationComment === undefined) {
                this.documentationComment = this.declaration ? getJsDocCommentsFromDeclarations([this.declaration], undefined, false) : [];
            }
            return this.documentationComment;
        };
        return SignatureObject;
    })();
    var SourceFileObject = (function (_super) {
        __extends(SourceFileObject, _super);
        function SourceFileObject() {
            _super.apply(this, arguments);
        }
        SourceFileObject.prototype.update = function (newText, textChangeRange) {
            return ts.updateSourceFile(this, newText, textChangeRange);
        };
        SourceFileObject.prototype.getLineAndCharacterOfPosition = function (position) {
            return ts.getLineAndCharacterOfPosition(this, position);
        };
        SourceFileObject.prototype.getLineStarts = function () {
            return ts.getLineStarts(this);
        };
        SourceFileObject.prototype.getPositionOfLineAndCharacter = function (line, character) {
            return ts.getPositionOfLineAndCharacter(this, line, character);
        };
        SourceFileObject.prototype.getNamedDeclarations = function () {
            if (!this.namedDeclarations) {
                this.namedDeclarations = this.computeNamedDeclarations();
            }
            return this.namedDeclarations;
        };
        SourceFileObject.prototype.computeNamedDeclarations = function () {
            var result = {};
            ts.forEachChild(this, visit);
            return result;
            function addDeclaration(declaration) {
                var name = getDeclarationName(declaration);
                if (name) {
                    var declarations = getDeclarations(name);
                    declarations.push(declaration);
                }
            }
            function getDeclarations(name) {
                return ts.getProperty(result, name) || (result[name] = []);
            }
            function getDeclarationName(declaration) {
                if (declaration.name) {
                    var result_2 = getTextOfIdentifierOrLiteral(declaration.name);
                    if (result_2 !== undefined) {
                        return result_2;
                    }
                    if (declaration.name.kind === 128) {
                        var expr = declaration.name.expression;
                        if (expr.kind === 156) {
                            return expr.name.text;
                        }
                        return getTextOfIdentifierOrLiteral(expr);
                    }
                }
                return undefined;
            }
            function getTextOfIdentifierOrLiteral(node) {
                if (node) {
                    if (node.kind === 65 ||
                        node.kind === 8 ||
                        node.kind === 7) {
                        return node.text;
                    }
                }
                return undefined;
            }
            function visit(node) {
                switch (node.kind) {
                    case 201:
                    case 135:
                    case 134:
                        var functionDeclaration = node;
                        var declarationName = getDeclarationName(functionDeclaration);
                        if (declarationName) {
                            var declarations = getDeclarations(declarationName);
                            var lastDeclaration = ts.lastOrUndefined(declarations);
                            if (lastDeclaration && functionDeclaration.parent === lastDeclaration.parent && functionDeclaration.symbol === lastDeclaration.symbol) {
                                if (functionDeclaration.body && !lastDeclaration.body) {
                                    declarations[declarations.length - 1] = functionDeclaration;
                                }
                            }
                            else {
                                declarations.push(functionDeclaration);
                            }
                            ts.forEachChild(node, visit);
                        }
                        break;
                    case 202:
                    case 203:
                    case 204:
                    case 205:
                    case 206:
                    case 209:
                    case 218:
                    case 214:
                    case 209:
                    case 211:
                    case 212:
                    case 137:
                    case 138:
                    case 146:
                        addDeclaration(node);
                    case 136:
                    case 181:
                    case 200:
                    case 151:
                    case 152:
                    case 207:
                        ts.forEachChild(node, visit);
                        break;
                    case 180:
                        if (ts.isFunctionBlock(node)) {
                            ts.forEachChild(node, visit);
                        }
                        break;
                    case 130:
                        if (!(node.flags & 112)) {
                            break;
                        }
                    case 199:
                    case 153:
                        if (ts.isBindingPattern(node.name)) {
                            ts.forEachChild(node.name, visit);
                            break;
                        }
                    case 227:
                    case 133:
                    case 132:
                        addDeclaration(node);
                        break;
                    case 216:
                        if (node.exportClause) {
                            ts.forEach(node.exportClause.elements, visit);
                        }
                        break;
                    case 210:
                        var importClause = node.importClause;
                        if (importClause) {
                            if (importClause.name) {
                                addDeclaration(importClause);
                            }
                            if (importClause.namedBindings) {
                                if (importClause.namedBindings.kind === 212) {
                                    addDeclaration(importClause.namedBindings);
                                }
                                else {
                                    ts.forEach(importClause.namedBindings.elements, visit);
                                }
                            }
                        }
                        break;
                }
            }
        };
        return SourceFileObject;
    })(NodeObject);
    var TextChange = (function () {
        function TextChange() {
        }
        return TextChange;
    })();
    ts.TextChange = TextChange;
    var HighlightSpanKind;
    (function (HighlightSpanKind) {
        HighlightSpanKind.none = "none";
        HighlightSpanKind.definition = "definition";
        HighlightSpanKind.reference = "reference";
        HighlightSpanKind.writtenReference = "writtenReference";
    })(HighlightSpanKind = ts.HighlightSpanKind || (ts.HighlightSpanKind = {}));
    (function (SymbolDisplayPartKind) {
        SymbolDisplayPartKind[SymbolDisplayPartKind["aliasName"] = 0] = "aliasName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["className"] = 1] = "className";
        SymbolDisplayPartKind[SymbolDisplayPartKind["enumName"] = 2] = "enumName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["fieldName"] = 3] = "fieldName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["interfaceName"] = 4] = "interfaceName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["keyword"] = 5] = "keyword";
        SymbolDisplayPartKind[SymbolDisplayPartKind["lineBreak"] = 6] = "lineBreak";
        SymbolDisplayPartKind[SymbolDisplayPartKind["numericLiteral"] = 7] = "numericLiteral";
        SymbolDisplayPartKind[SymbolDisplayPartKind["stringLiteral"] = 8] = "stringLiteral";
        SymbolDisplayPartKind[SymbolDisplayPartKind["localName"] = 9] = "localName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["methodName"] = 10] = "methodName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["moduleName"] = 11] = "moduleName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["operator"] = 12] = "operator";
        SymbolDisplayPartKind[SymbolDisplayPartKind["parameterName"] = 13] = "parameterName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["propertyName"] = 14] = "propertyName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["punctuation"] = 15] = "punctuation";
        SymbolDisplayPartKind[SymbolDisplayPartKind["space"] = 16] = "space";
        SymbolDisplayPartKind[SymbolDisplayPartKind["text"] = 17] = "text";
        SymbolDisplayPartKind[SymbolDisplayPartKind["typeParameterName"] = 18] = "typeParameterName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["enumMemberName"] = 19] = "enumMemberName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["functionName"] = 20] = "functionName";
        SymbolDisplayPartKind[SymbolDisplayPartKind["regularExpressionLiteral"] = 21] = "regularExpressionLiteral";
    })(ts.SymbolDisplayPartKind || (ts.SymbolDisplayPartKind = {}));
    var SymbolDisplayPartKind = ts.SymbolDisplayPartKind;
    (function (TokenClass) {
        TokenClass[TokenClass["Punctuation"] = 0] = "Punctuation";
        TokenClass[TokenClass["Keyword"] = 1] = "Keyword";
        TokenClass[TokenClass["Operator"] = 2] = "Operator";
        TokenClass[TokenClass["Comment"] = 3] = "Comment";
        TokenClass[TokenClass["Whitespace"] = 4] = "Whitespace";
        TokenClass[TokenClass["Identifier"] = 5] = "Identifier";
        TokenClass[TokenClass["NumberLiteral"] = 6] = "NumberLiteral";
        TokenClass[TokenClass["StringLiteral"] = 7] = "StringLiteral";
        TokenClass[TokenClass["RegExpLiteral"] = 8] = "RegExpLiteral";
    })(ts.TokenClass || (ts.TokenClass = {}));
    var TokenClass = ts.TokenClass;
    var ScriptElementKind;
    (function (ScriptElementKind) {
        ScriptElementKind.unknown = "";
        ScriptElementKind.warning = "warning";
        ScriptElementKind.keyword = "keyword";
        ScriptElementKind.scriptElement = "script";
        ScriptElementKind.moduleElement = "module";
        ScriptElementKind.classElement = "class";
        ScriptElementKind.interfaceElement = "interface";
        ScriptElementKind.typeElement = "type";
        ScriptElementKind.enumElement = "enum";
        ScriptElementKind.variableElement = "var";
        ScriptElementKind.localVariableElement = "local var";
        ScriptElementKind.functionElement = "function";
        ScriptElementKind.localFunctionElement = "local function";
        ScriptElementKind.memberFunctionElement = "method";
        ScriptElementKind.memberGetAccessorElement = "getter";
        ScriptElementKind.memberSetAccessorElement = "setter";
        ScriptElementKind.memberVariableElement = "property";
        ScriptElementKind.constructorImplementationElement = "constructor";
        ScriptElementKind.callSignatureElement = "call";
        ScriptElementKind.indexSignatureElement = "index";
        ScriptElementKind.constructSignatureElement = "construct";
        ScriptElementKind.parameterElement = "parameter";
        ScriptElementKind.typeParameterElement = "type parameter";
        ScriptElementKind.primitiveType = "primitive type";
        ScriptElementKind.label = "label";
        ScriptElementKind.alias = "alias";
        ScriptElementKind.constElement = "const";
        ScriptElementKind.letElement = "let";
    })(ScriptElementKind = ts.ScriptElementKind || (ts.ScriptElementKind = {}));
    var ScriptElementKindModifier;
    (function (ScriptElementKindModifier) {
        ScriptElementKindModifier.none = "";
        ScriptElementKindModifier.publicMemberModifier = "public";
        ScriptElementKindModifier.privateMemberModifier = "private";
        ScriptElementKindModifier.protectedMemberModifier = "protected";
        ScriptElementKindModifier.exportedModifier = "export";
        ScriptElementKindModifier.ambientModifier = "declare";
        ScriptElementKindModifier.staticModifier = "static";
    })(ScriptElementKindModifier = ts.ScriptElementKindModifier || (ts.ScriptElementKindModifier = {}));
    var ClassificationTypeNames = (function () {
        function ClassificationTypeNames() {
        }
        ClassificationTypeNames.comment = "comment";
        ClassificationTypeNames.identifier = "identifier";
        ClassificationTypeNames.keyword = "keyword";
        ClassificationTypeNames.numericLiteral = "number";
        ClassificationTypeNames.operator = "operator";
        ClassificationTypeNames.stringLiteral = "string";
        ClassificationTypeNames.whiteSpace = "whitespace";
        ClassificationTypeNames.text = "text";
        ClassificationTypeNames.punctuation = "punctuation";
        ClassificationTypeNames.className = "class name";
        ClassificationTypeNames.enumName = "enum name";
        ClassificationTypeNames.interfaceName = "interface name";
        ClassificationTypeNames.moduleName = "module name";
        ClassificationTypeNames.typeParameterName = "type parameter name";
        ClassificationTypeNames.typeAliasName = "type alias name";
        ClassificationTypeNames.parameterName = "parameter name";
        return ClassificationTypeNames;
    })();
    ts.ClassificationTypeNames = ClassificationTypeNames;
    function displayPartsToString(displayParts) {
        if (displayParts) {
            return ts.map(displayParts, function (displayPart) { return displayPart.text; }).join("");
        }
        return "";
    }
    ts.displayPartsToString = displayPartsToString;
    function isLocalVariableOrFunction(symbol) {
        if (symbol.parent) {
            return false;
        }
        return ts.forEach(symbol.declarations, function (declaration) {
            if (declaration.kind === 163) {
                return true;
            }
            if (declaration.kind !== 199 && declaration.kind !== 201) {
                return false;
            }
            for (var parent_7 = declaration.parent; !ts.isFunctionBlock(parent_7); parent_7 = parent_7.parent) {
                if (parent_7.kind === 228 || parent_7.kind === 207) {
                    return false;
                }
            }
            return true;
        });
    }
    function getDefaultCompilerOptions() {
        return {
            target: 1,
            module: 0
        };
    }
    ts.getDefaultCompilerOptions = getDefaultCompilerOptions;
    var OperationCanceledException = (function () {
        function OperationCanceledException() {
        }
        return OperationCanceledException;
    })();
    ts.OperationCanceledException = OperationCanceledException;
    var CancellationTokenObject = (function () {
        function CancellationTokenObject(cancellationToken) {
            this.cancellationToken = cancellationToken;
        }
        CancellationTokenObject.prototype.isCancellationRequested = function () {
            return this.cancellationToken && this.cancellationToken.isCancellationRequested();
        };
        CancellationTokenObject.prototype.throwIfCancellationRequested = function () {
            if (this.isCancellationRequested()) {
                throw new OperationCanceledException();
            }
        };
        CancellationTokenObject.None = new CancellationTokenObject(null);
        return CancellationTokenObject;
    })();
    ts.CancellationTokenObject = CancellationTokenObject;
    var HostCache = (function () {
        function HostCache(host, getCanonicalFileName) {
            this.host = host;
            this.getCanonicalFileName = getCanonicalFileName;
            this.fileNameToEntry = {};
            var rootFileNames = host.getScriptFileNames();
            for (var _i = 0; _i < rootFileNames.length; _i++) {
                var fileName = rootFileNames[_i];
                this.createEntry(fileName);
            }
            this._compilationSettings = host.getCompilationSettings() || getDefaultCompilerOptions();
        }
        HostCache.prototype.compilationSettings = function () {
            return this._compilationSettings;
        };
        HostCache.prototype.normalizeFileName = function (fileName) {
            return this.getCanonicalFileName(ts.normalizeSlashes(fileName));
        };
        HostCache.prototype.createEntry = function (fileName) {
            var entry;
            var scriptSnapshot = this.host.getScriptSnapshot(fileName);
            if (scriptSnapshot) {
                entry = {
                    hostFileName: fileName,
                    version: this.host.getScriptVersion(fileName),
                    scriptSnapshot: scriptSnapshot
                };
            }
            return this.fileNameToEntry[this.normalizeFileName(fileName)] = entry;
        };
        HostCache.prototype.getEntry = function (fileName) {
            return ts.lookUp(this.fileNameToEntry, this.normalizeFileName(fileName));
        };
        HostCache.prototype.contains = function (fileName) {
            return ts.hasProperty(this.fileNameToEntry, this.normalizeFileName(fileName));
        };
        HostCache.prototype.getOrCreateEntry = function (fileName) {
            if (this.contains(fileName)) {
                return this.getEntry(fileName);
            }
            return this.createEntry(fileName);
        };
        HostCache.prototype.getRootFileNames = function () {
            var _this = this;
            var fileNames = [];
            ts.forEachKey(this.fileNameToEntry, function (key) {
                var entry = _this.getEntry(key);
                if (entry) {
                    fileNames.push(entry.hostFileName);
                }
            });
            return fileNames;
        };
        HostCache.prototype.getVersion = function (fileName) {
            var file = this.getEntry(fileName);
            return file && file.version;
        };
        HostCache.prototype.getScriptSnapshot = function (fileName) {
            var file = this.getEntry(fileName);
            return file && file.scriptSnapshot;
        };
        return HostCache;
    })();
    var SyntaxTreeCache = (function () {
        function SyntaxTreeCache(host) {
            this.host = host;
        }
        SyntaxTreeCache.prototype.getCurrentSourceFile = function (fileName) {
            var scriptSnapshot = this.host.getScriptSnapshot(fileName);
            if (!scriptSnapshot) {
                throw new Error("Could not find file: '" + fileName + "'.");
            }
            var version = this.host.getScriptVersion(fileName);
            var sourceFile;
            if (this.currentFileName !== fileName) {
                sourceFile = createLanguageServiceSourceFile(fileName, scriptSnapshot, 2, version, true);
            }
            else if (this.currentFileVersion !== version) {
                var editRange = scriptSnapshot.getChangeRange(this.currentFileScriptSnapshot);
                sourceFile = updateLanguageServiceSourceFile(this.currentSourceFile, scriptSnapshot, version, editRange);
            }
            if (sourceFile) {
                this.currentFileVersion = version;
                this.currentFileName = fileName;
                this.currentFileScriptSnapshot = scriptSnapshot;
                this.currentSourceFile = sourceFile;
            }
            return this.currentSourceFile;
        };
        return SyntaxTreeCache;
    })();
    function setSourceFileFields(sourceFile, scriptSnapshot, version) {
        sourceFile.version = version;
        sourceFile.scriptSnapshot = scriptSnapshot;
    }
    function transpile(input, compilerOptions, fileName, diagnostics) {
        var options = compilerOptions ? ts.clone(compilerOptions) : getDefaultCompilerOptions();
        options.separateCompilation = true;
        options.allowNonTsExtensions = true;
        var inputFileName = fileName || "module.ts";
        var sourceFile = ts.createSourceFile(inputFileName, input, options.target);
        if (diagnostics && sourceFile.parseDiagnostics) {
            diagnostics.push.apply(diagnostics, sourceFile.parseDiagnostics);
        }
        var outputText;
        var compilerHost = {
            getSourceFile: function (fileName, target) { return fileName === inputFileName ? sourceFile : undefined; },
            writeFile: function (name, text, writeByteOrderMark) {
                ts.Debug.assert(outputText === undefined, "Unexpected multiple outputs for the file: " + name);
                outputText = text;
            },
            getDefaultLibFileName: function () { return "lib.d.ts"; },
            useCaseSensitiveFileNames: function () { return false; },
            getCanonicalFileName: function (fileName) { return fileName; },
            getCurrentDirectory: function () { return ""; },
            getNewLine: function () { return (ts.sys && ts.sys.newLine) || "\r\n"; }
        };
        var program = ts.createProgram([inputFileName], options, compilerHost);
        if (diagnostics) {
            diagnostics.push.apply(diagnostics, program.getGlobalDiagnostics());
        }
        program.emit();
        ts.Debug.assert(outputText !== undefined, "Output generation failed");
        return outputText;
    }
    ts.transpile = transpile;
    function createLanguageServiceSourceFile(fileName, scriptSnapshot, scriptTarget, version, setNodeParents) {
        var sourceFile = ts.createSourceFile(fileName, scriptSnapshot.getText(0, scriptSnapshot.getLength()), scriptTarget, setNodeParents);
        setSourceFileFields(sourceFile, scriptSnapshot, version);
        sourceFile.nameTable = sourceFile.identifiers;
        return sourceFile;
    }
    ts.createLanguageServiceSourceFile = createLanguageServiceSourceFile;
    ts.disableIncrementalParsing = false;
    function updateLanguageServiceSourceFile(sourceFile, scriptSnapshot, version, textChangeRange, aggressiveChecks) {
        if (textChangeRange) {
            if (version !== sourceFile.version) {
                if (!ts.disableIncrementalParsing) {
                    var newSourceFile = ts.updateSourceFile(sourceFile, scriptSnapshot.getText(0, scriptSnapshot.getLength()), textChangeRange, aggressiveChecks);
                    setSourceFileFields(newSourceFile, scriptSnapshot, version);
                    newSourceFile.nameTable = undefined;
                    return newSourceFile;
                }
            }
        }
        return createLanguageServiceSourceFile(sourceFile.fileName, scriptSnapshot, sourceFile.languageVersion, version, true);
    }
    ts.updateLanguageServiceSourceFile = updateLanguageServiceSourceFile;
    function createDocumentRegistry() {
        var buckets = {};
        function getKeyFromCompilationSettings(settings) {
            return "_" + settings.target;
        }
        function getBucketForCompilationSettings(settings, createIfMissing) {
            var key = getKeyFromCompilationSettings(settings);
            var bucket = ts.lookUp(buckets, key);
            if (!bucket && createIfMissing) {
                buckets[key] = bucket = {};
            }
            return bucket;
        }
        function reportStats() {
            var bucketInfoArray = Object.keys(buckets).filter(function (name) { return name && name.charAt(0) === '_'; }).map(function (name) {
                var entries = ts.lookUp(buckets, name);
                var sourceFiles = [];
                for (var i in entries) {
                    var entry = entries[i];
                    sourceFiles.push({
                        name: i,
                        refCount: entry.languageServiceRefCount,
                        references: entry.owners.slice(0)
                    });
                }
                sourceFiles.sort(function (x, y) { return y.refCount - x.refCount; });
                return {
                    bucket: name,
                    sourceFiles: sourceFiles
                };
            });
            return JSON.stringify(bucketInfoArray, null, 2);
        }
        function acquireDocument(fileName, compilationSettings, scriptSnapshot, version) {
            return acquireOrUpdateDocument(fileName, compilationSettings, scriptSnapshot, version, true);
        }
        function updateDocument(fileName, compilationSettings, scriptSnapshot, version) {
            return acquireOrUpdateDocument(fileName, compilationSettings, scriptSnapshot, version, false);
        }
        function acquireOrUpdateDocument(fileName, compilationSettings, scriptSnapshot, version, acquiring) {
            var bucket = getBucketForCompilationSettings(compilationSettings, true);
            var entry = ts.lookUp(bucket, fileName);
            if (!entry) {
                ts.Debug.assert(acquiring, "How could we be trying to update a document that the registry doesn't have?");
                var sourceFile = createLanguageServiceSourceFile(fileName, scriptSnapshot, compilationSettings.target, version, false);
                bucket[fileName] = entry = {
                    sourceFile: sourceFile,
                    languageServiceRefCount: 0,
                    owners: []
                };
            }
            else {
                if (entry.sourceFile.version !== version) {
                    entry.sourceFile = updateLanguageServiceSourceFile(entry.sourceFile, scriptSnapshot, version, scriptSnapshot.getChangeRange(entry.sourceFile.scriptSnapshot));
                }
            }
            if (acquiring) {
                entry.languageServiceRefCount++;
            }
            return entry.sourceFile;
        }
        function releaseDocument(fileName, compilationSettings) {
            var bucket = getBucketForCompilationSettings(compilationSettings, false);
            ts.Debug.assert(bucket !== undefined);
            var entry = ts.lookUp(bucket, fileName);
            entry.languageServiceRefCount--;
            ts.Debug.assert(entry.languageServiceRefCount >= 0);
            if (entry.languageServiceRefCount === 0) {
                delete bucket[fileName];
            }
        }
        return {
            acquireDocument: acquireDocument,
            updateDocument: updateDocument,
            releaseDocument: releaseDocument,
            reportStats: reportStats
        };
    }
    ts.createDocumentRegistry = createDocumentRegistry;
    function preProcessFile(sourceText, readImportFiles) {
        if (readImportFiles === void 0) { readImportFiles = true; }
        var referencedFiles = [];
        var importedFiles = [];
        var isNoDefaultLib = false;
        function processTripleSlashDirectives() {
            var commentRanges = ts.getLeadingCommentRanges(sourceText, 0);
            ts.forEach(commentRanges, function (commentRange) {
                var comment = sourceText.substring(commentRange.pos, commentRange.end);
                var referencePathMatchResult = ts.getFileReferenceFromReferencePath(comment, commentRange);
                if (referencePathMatchResult) {
                    isNoDefaultLib = referencePathMatchResult.isNoDefaultLib;
                    var fileReference = referencePathMatchResult.fileReference;
                    if (fileReference) {
                        referencedFiles.push(fileReference);
                    }
                }
            });
        }
        function recordModuleName() {
            var importPath = scanner.getTokenValue();
            var pos = scanner.getTokenPos();
            importedFiles.push({
                fileName: importPath,
                pos: pos,
                end: pos + importPath.length
            });
        }
        function processImport() {
            scanner.setText(sourceText);
            var token = scanner.scan();
            while (token !== 1) {
                if (token === 85) {
                    token = scanner.scan();
                    if (token === 8) {
                        recordModuleName();
                        continue;
                    }
                    else {
                        if (token === 65) {
                            token = scanner.scan();
                            if (token === 125) {
                                token = scanner.scan();
                                if (token === 8) {
                                    recordModuleName();
                                    continue;
                                }
                            }
                            else if (token === 53) {
                                token = scanner.scan();
                                if (token === 119) {
                                    token = scanner.scan();
                                    if (token === 16) {
                                        token = scanner.scan();
                                        if (token === 8) {
                                            recordModuleName();
                                            continue;
                                        }
                                    }
                                }
                            }
                            else if (token === 23) {
                                token = scanner.scan();
                            }
                            else {
                                continue;
                            }
                        }
                        if (token === 14) {
                            token = scanner.scan();
                            while (token !== 15) {
                                token = scanner.scan();
                            }
                            if (token === 15) {
                                token = scanner.scan();
                                if (token === 125) {
                                    token = scanner.scan();
                                    if (token === 8) {
                                        recordModuleName();
                                    }
                                }
                            }
                        }
                        else if (token === 35) {
                            token = scanner.scan();
                            if (token === 111) {
                                token = scanner.scan();
                                if (token === 65) {
                                    token = scanner.scan();
                                    if (token === 125) {
                                        token = scanner.scan();
                                        if (token === 8) {
                                            recordModuleName();
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
                else if (token === 78) {
                    token = scanner.scan();
                    if (token === 14) {
                        token = scanner.scan();
                        while (token !== 15) {
                            token = scanner.scan();
                        }
                        if (token === 15) {
                            token = scanner.scan();
                            if (token === 125) {
                                token = scanner.scan();
                                if (token === 8) {
                                    recordModuleName();
                                }
                            }
                        }
                    }
                    else if (token === 35) {
                        token = scanner.scan();
                        if (token === 125) {
                            token = scanner.scan();
                            if (token === 8) {
                                recordModuleName();
                            }
                        }
                    }
                }
                token = scanner.scan();
            }
            scanner.setText(undefined);
        }
        if (readImportFiles) {
            processImport();
        }
        processTripleSlashDirectives();
        return { referencedFiles: referencedFiles, importedFiles: importedFiles, isLibFile: isNoDefaultLib };
    }
    ts.preProcessFile = preProcessFile;
    function getTargetLabel(referenceNode, labelName) {
        while (referenceNode) {
            if (referenceNode.kind === 195 && referenceNode.label.text === labelName) {
                return referenceNode.label;
            }
            referenceNode = referenceNode.parent;
        }
        return undefined;
    }
    function isJumpStatementTarget(node) {
        return node.kind === 65 &&
            (node.parent.kind === 191 || node.parent.kind === 190) &&
            node.parent.label === node;
    }
    function isLabelOfLabeledStatement(node) {
        return node.kind === 65 &&
            node.parent.kind === 195 &&
            node.parent.label === node;
    }
    function isLabeledBy(node, labelName) {
        for (var owner = node.parent; owner.kind === 195; owner = owner.parent) {
            if (owner.label.text === labelName) {
                return true;
            }
        }
        return false;
    }
    function isLabelName(node) {
        return isLabelOfLabeledStatement(node) || isJumpStatementTarget(node);
    }
    function isRightSideOfQualifiedName(node) {
        return node.parent.kind === 127 && node.parent.right === node;
    }
    function isRightSideOfPropertyAccess(node) {
        return node && node.parent && node.parent.kind === 156 && node.parent.name === node;
    }
    function isCallExpressionTarget(node) {
        if (isRightSideOfPropertyAccess(node)) {
            node = node.parent;
        }
        return node && node.parent && node.parent.kind === 158 && node.parent.expression === node;
    }
    function isNewExpressionTarget(node) {
        if (isRightSideOfPropertyAccess(node)) {
            node = node.parent;
        }
        return node && node.parent && node.parent.kind === 159 && node.parent.expression === node;
    }
    function isNameOfModuleDeclaration(node) {
        return node.parent.kind === 206 && node.parent.name === node;
    }
    function isNameOfFunctionDeclaration(node) {
        return node.kind === 65 &&
            ts.isFunctionLike(node.parent) && node.parent.name === node;
    }
    function isNameOfPropertyAssignment(node) {
        return (node.kind === 65 || node.kind === 8 || node.kind === 7) &&
            (node.parent.kind === 225 || node.parent.kind === 226) && node.parent.name === node;
    }
    function isLiteralNameOfPropertyDeclarationOrIndexAccess(node) {
        if (node.kind === 8 || node.kind === 7) {
            switch (node.parent.kind) {
                case 133:
                case 132:
                case 225:
                case 227:
                case 135:
                case 134:
                case 137:
                case 138:
                case 206:
                    return node.parent.name === node;
                case 157:
                    return node.parent.argumentExpression === node;
            }
        }
        return false;
    }
    function isNameOfExternalModuleImportOrDeclaration(node) {
        if (node.kind === 8) {
            return isNameOfModuleDeclaration(node) ||
                (ts.isExternalModuleImportEqualsDeclaration(node.parent.parent) && ts.getExternalModuleImportEqualsDeclarationExpression(node.parent.parent) === node);
        }
        return false;
    }
    function isInsideComment(sourceFile, token, position) {
        return position <= token.getStart(sourceFile) &&
            (isInsideCommentRange(ts.getTrailingCommentRanges(sourceFile.text, token.getFullStart())) ||
                isInsideCommentRange(ts.getLeadingCommentRanges(sourceFile.text, token.getFullStart())));
        function isInsideCommentRange(comments) {
            return ts.forEach(comments, function (comment) {
                if (comment.pos < position && position < comment.end) {
                    return true;
                }
                else if (position === comment.end) {
                    var text = sourceFile.text;
                    var width = comment.end - comment.pos;
                    if (width <= 2 || text.charCodeAt(comment.pos + 1) === 47) {
                        return true;
                    }
                    else {
                        return !(text.charCodeAt(comment.end - 1) === 47 &&
                            text.charCodeAt(comment.end - 2) === 42);
                    }
                }
                return false;
            });
        }
    }
    var keywordCompletions = [];
    for (var i = 66; i <= 126; i++) {
        keywordCompletions.push({
            name: ts.tokenToString(i),
            kind: ScriptElementKind.keyword,
            kindModifiers: ScriptElementKindModifier.none,
            sortText: "0"
        });
    }
    function getContainerNode(node) {
        while (true) {
            node = node.parent;
            if (!node) {
                return undefined;
            }
            switch (node.kind) {
                case 228:
                case 135:
                case 134:
                case 201:
                case 163:
                case 137:
                case 138:
                case 202:
                case 203:
                case 205:
                case 206:
                    return node;
            }
        }
    }
    ts.getContainerNode = getContainerNode;
    function getNodeKind(node) {
        switch (node.kind) {
            case 206: return ScriptElementKind.moduleElement;
            case 202: return ScriptElementKind.classElement;
            case 203: return ScriptElementKind.interfaceElement;
            case 204: return ScriptElementKind.typeElement;
            case 205: return ScriptElementKind.enumElement;
            case 199:
                return ts.isConst(node)
                    ? ScriptElementKind.constElement
                    : ts.isLet(node)
                        ? ScriptElementKind.letElement
                        : ScriptElementKind.variableElement;
            case 201: return ScriptElementKind.functionElement;
            case 137: return ScriptElementKind.memberGetAccessorElement;
            case 138: return ScriptElementKind.memberSetAccessorElement;
            case 135:
            case 134:
                return ScriptElementKind.memberFunctionElement;
            case 133:
            case 132:
                return ScriptElementKind.memberVariableElement;
            case 141: return ScriptElementKind.indexSignatureElement;
            case 140: return ScriptElementKind.constructSignatureElement;
            case 139: return ScriptElementKind.callSignatureElement;
            case 136: return ScriptElementKind.constructorImplementationElement;
            case 129: return ScriptElementKind.typeParameterElement;
            case 227: return ScriptElementKind.variableElement;
            case 130: return (node.flags & 112) ? ScriptElementKind.memberVariableElement : ScriptElementKind.parameterElement;
            case 209:
            case 214:
            case 211:
            case 218:
            case 212:
                return ScriptElementKind.alias;
        }
        return ScriptElementKind.unknown;
    }
    ts.getNodeKind = getNodeKind;
    function createLanguageService(host, documentRegistry) {
        if (documentRegistry === void 0) { documentRegistry = createDocumentRegistry(); }
        var syntaxTreeCache = new SyntaxTreeCache(host);
        var ruleProvider;
        var program;
        var lastProjectVersion;
        var useCaseSensitivefileNames = false;
        var cancellationToken = new CancellationTokenObject(host.getCancellationToken && host.getCancellationToken());
        if (!ts.localizedDiagnosticMessages && host.getLocalizedDiagnosticMessages) {
            ts.localizedDiagnosticMessages = host.getLocalizedDiagnosticMessages();
        }
        function log(message) {
            if (host.log) {
                host.log(message);
            }
        }
        function getCanonicalFileName(fileName) {
            return useCaseSensitivefileNames ? fileName : fileName.toLowerCase();
        }
        function getValidSourceFile(fileName) {
            fileName = ts.normalizeSlashes(fileName);
            var sourceFile = program.getSourceFile(getCanonicalFileName(fileName));
            if (!sourceFile) {
                throw new Error("Could not find file: '" + fileName + "'.");
            }
            return sourceFile;
        }
        function getRuleProvider(options) {
            if (!ruleProvider) {
                ruleProvider = new ts.formatting.RulesProvider();
            }
            ruleProvider.ensureUpToDate(options);
            return ruleProvider;
        }
        function synchronizeHostData() {
            if (host.getProjectVersion) {
                var hostProjectVersion = host.getProjectVersion();
                if (hostProjectVersion) {
                    if (lastProjectVersion === hostProjectVersion) {
                        return;
                    }
                    lastProjectVersion = hostProjectVersion;
                }
            }
            var hostCache = new HostCache(host, getCanonicalFileName);
            if (programUpToDate()) {
                return;
            }
            var oldSettings = program && program.getCompilerOptions();
            var newSettings = hostCache.compilationSettings();
            var changesInCompilationSettingsAffectSyntax = oldSettings && oldSettings.target !== newSettings.target;
            var newProgram = ts.createProgram(hostCache.getRootFileNames(), newSettings, {
                getSourceFile: getOrCreateSourceFile,
                getCancellationToken: function () { return cancellationToken; },
                getCanonicalFileName: getCanonicalFileName,
                useCaseSensitiveFileNames: function () { return useCaseSensitivefileNames; },
                getNewLine: function () { return host.getNewLine ? host.getNewLine() : "\r\n"; },
                getDefaultLibFileName: function (options) { return host.getDefaultLibFileName(options); },
                writeFile: function (fileName, data, writeByteOrderMark) { },
                getCurrentDirectory: function () { return host.getCurrentDirectory(); }
            });
            if (program) {
                var oldSourceFiles = program.getSourceFiles();
                for (var _i = 0; _i < oldSourceFiles.length; _i++) {
                    var oldSourceFile = oldSourceFiles[_i];
                    var fileName = oldSourceFile.fileName;
                    if (!newProgram.getSourceFile(fileName) || changesInCompilationSettingsAffectSyntax) {
                        documentRegistry.releaseDocument(fileName, oldSettings);
                    }
                }
            }
            program = newProgram;
            program.getTypeChecker();
            return;
            function getOrCreateSourceFile(fileName) {
                var hostFileInformation = hostCache.getOrCreateEntry(fileName);
                if (!hostFileInformation) {
                    return undefined;
                }
                if (!changesInCompilationSettingsAffectSyntax) {
                    var oldSourceFile = program && program.getSourceFile(fileName);
                    if (oldSourceFile) {
                        return documentRegistry.updateDocument(fileName, newSettings, hostFileInformation.scriptSnapshot, hostFileInformation.version);
                    }
                }
                return documentRegistry.acquireDocument(fileName, newSettings, hostFileInformation.scriptSnapshot, hostFileInformation.version);
            }
            function sourceFileUpToDate(sourceFile) {
                return sourceFile && sourceFile.version === hostCache.getVersion(sourceFile.fileName);
            }
            function programUpToDate() {
                if (!program) {
                    return false;
                }
                var rootFileNames = hostCache.getRootFileNames();
                if (program.getSourceFiles().length !== rootFileNames.length) {
                    return false;
                }
                for (var _i = 0; _i < rootFileNames.length; _i++) {
                    var fileName = rootFileNames[_i];
                    if (!sourceFileUpToDate(program.getSourceFile(fileName))) {
                        return false;
                    }
                }
                return ts.compareDataObjects(program.getCompilerOptions(), hostCache.compilationSettings());
            }
        }
        function getProgram() {
            synchronizeHostData();
            return program;
        }
        function cleanupSemanticCache() {
        }
        function dispose() {
            if (program) {
                ts.forEach(program.getSourceFiles(), function (f) {
                    return documentRegistry.releaseDocument(f.fileName, program.getCompilerOptions());
                });
            }
        }
        function getSyntacticDiagnostics(fileName) {
            synchronizeHostData();
            return program.getSyntacticDiagnostics(getValidSourceFile(fileName));
        }
        function getSemanticDiagnostics(fileName) {
            synchronizeHostData();
            var targetSourceFile = getValidSourceFile(fileName);
            if (ts.isJavaScript(fileName)) {
                return getJavaScriptSemanticDiagnostics(targetSourceFile);
            }
            var semanticDiagnostics = program.getSemanticDiagnostics(targetSourceFile);
            if (!program.getCompilerOptions().declaration) {
                return semanticDiagnostics;
            }
            var declarationDiagnostics = program.getDeclarationDiagnostics(targetSourceFile);
            return ts.concatenate(semanticDiagnostics, declarationDiagnostics);
        }
        function getJavaScriptSemanticDiagnostics(sourceFile) {
            var diagnostics = [];
            walk(sourceFile);
            return diagnostics;
            function walk(node) {
                if (!node) {
                    return false;
                }
                switch (node.kind) {
                    case 209:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.import_can_only_be_used_in_a_ts_file));
                        return true;
                    case 215:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.export_can_only_be_used_in_a_ts_file));
                        return true;
                    case 202:
                        var classDeclaration = node;
                        if (checkModifiers(classDeclaration.modifiers) ||
                            checkTypeParameters(classDeclaration.typeParameters)) {
                            return true;
                        }
                        break;
                    case 223:
                        var heritageClause = node;
                        if (heritageClause.token === 102) {
                            diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.implements_clauses_can_only_be_used_in_a_ts_file));
                            return true;
                        }
                        break;
                    case 203:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.interface_declarations_can_only_be_used_in_a_ts_file));
                        return true;
                    case 206:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.module_declarations_can_only_be_used_in_a_ts_file));
                        return true;
                    case 204:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.type_aliases_can_only_be_used_in_a_ts_file));
                        return true;
                    case 135:
                    case 134:
                    case 136:
                    case 137:
                    case 138:
                    case 163:
                    case 201:
                    case 164:
                    case 201:
                        var functionDeclaration = node;
                        if (checkModifiers(functionDeclaration.modifiers) ||
                            checkTypeParameters(functionDeclaration.typeParameters) ||
                            checkTypeAnnotation(functionDeclaration.type)) {
                            return true;
                        }
                        break;
                    case 181:
                        var variableStatement = node;
                        if (checkModifiers(variableStatement.modifiers)) {
                            return true;
                        }
                        break;
                    case 199:
                        var variableDeclaration = node;
                        if (checkTypeAnnotation(variableDeclaration.type)) {
                            return true;
                        }
                        break;
                    case 158:
                    case 159:
                        var expression = node;
                        if (expression.typeArguments && expression.typeArguments.length > 0) {
                            var start = expression.typeArguments.pos;
                            diagnostics.push(ts.createFileDiagnostic(sourceFile, start, expression.typeArguments.end - start, ts.Diagnostics.type_arguments_can_only_be_used_in_a_ts_file));
                            return true;
                        }
                        break;
                    case 130:
                        var parameter = node;
                        if (parameter.modifiers) {
                            var start = parameter.modifiers.pos;
                            diagnostics.push(ts.createFileDiagnostic(sourceFile, start, parameter.modifiers.end - start, ts.Diagnostics.parameter_modifiers_can_only_be_used_in_a_ts_file));
                            return true;
                        }
                        if (parameter.questionToken) {
                            diagnostics.push(ts.createDiagnosticForNode(parameter.questionToken, ts.Diagnostics.can_only_be_used_in_a_ts_file));
                            return true;
                        }
                        if (parameter.type) {
                            diagnostics.push(ts.createDiagnosticForNode(parameter.type, ts.Diagnostics.types_can_only_be_used_in_a_ts_file));
                            return true;
                        }
                        break;
                    case 133:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.property_declarations_can_only_be_used_in_a_ts_file));
                        return true;
                    case 205:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.enum_declarations_can_only_be_used_in_a_ts_file));
                        return true;
                    case 161:
                        var typeAssertionExpression = node;
                        diagnostics.push(ts.createDiagnosticForNode(typeAssertionExpression.type, ts.Diagnostics.type_assertion_expressions_can_only_be_used_in_a_ts_file));
                        return true;
                    case 131:
                        diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.decorators_can_only_be_used_in_a_ts_file));
                        return true;
                }
                return ts.forEachChild(node, walk);
            }
            function checkTypeParameters(typeParameters) {
                if (typeParameters) {
                    var start = typeParameters.pos;
                    diagnostics.push(ts.createFileDiagnostic(sourceFile, start, typeParameters.end - start, ts.Diagnostics.type_parameter_declarations_can_only_be_used_in_a_ts_file));
                    return true;
                }
                return false;
            }
            function checkTypeAnnotation(type) {
                if (type) {
                    diagnostics.push(ts.createDiagnosticForNode(type, ts.Diagnostics.types_can_only_be_used_in_a_ts_file));
                    return true;
                }
                return false;
            }
            function checkModifiers(modifiers) {
                if (modifiers) {
                    for (var _i = 0; _i < modifiers.length; _i++) {
                        var modifier = modifiers[_i];
                        switch (modifier.kind) {
                            case 108:
                            case 106:
                            case 107:
                            case 115:
                                diagnostics.push(ts.createDiagnosticForNode(modifier, ts.Diagnostics._0_can_only_be_used_in_a_ts_file, ts.tokenToString(modifier.kind)));
                                return true;
                            case 109:
                            case 78:
                            case 70:
                            case 73:
                        }
                    }
                }
                return false;
            }
        }
        function getCompilerOptionsDiagnostics() {
            synchronizeHostData();
            return program.getGlobalDiagnostics();
        }
        function getCompletionEntryDisplayNameForSymbol(symbol, target, performCharacterChecks) {
            var displayName = symbol.getName();
            if (displayName) {
                if (displayName === "default") {
                    var localSymbol = ts.getLocalSymbolForExportDefault(symbol);
                    if (localSymbol && localSymbol.name) {
                        displayName = symbol.valueDeclaration.localSymbol.name;
                    }
                }
                var firstCharCode = displayName.charCodeAt(0);
                if ((symbol.flags & 1536) && (firstCharCode === 39 || firstCharCode === 34)) {
                    return undefined;
                }
            }
            return getCompletionEntryDisplayName(displayName, target, performCharacterChecks);
        }
        function getCompletionEntryDisplayName(displayName, target, performCharacterChecks) {
            if (!displayName) {
                return undefined;
            }
            var firstCharCode = displayName.charCodeAt(0);
            if (displayName.length >= 2 &&
                firstCharCode === displayName.charCodeAt(displayName.length - 1) &&
                (firstCharCode === 39 || firstCharCode === 34)) {
                displayName = displayName.substring(1, displayName.length - 1);
            }
            if (!displayName) {
                return undefined;
            }
            if (performCharacterChecks) {
                if (!ts.isIdentifierStart(displayName.charCodeAt(0), target)) {
                    return undefined;
                }
                for (var i = 1, n = displayName.length; i < n; i++) {
                    if (!ts.isIdentifierPart(displayName.charCodeAt(i), target)) {
                        return undefined;
                    }
                }
            }
            return ts.unescapeIdentifier(displayName);
        }
        function getCompletionData(fileName, position) {
            var typeChecker = program.getTypeChecker();
            var syntacticStart = new Date().getTime();
            var sourceFile = getValidSourceFile(fileName);
            var start = new Date().getTime();
            var currentToken = ts.getTokenAtPosition(sourceFile, position);
            log("getCompletionData: Get current token: " + (new Date().getTime() - start));
            start = new Date().getTime();
            var insideComment = isInsideComment(sourceFile, currentToken, position);
            log("getCompletionData: Is inside comment: " + (new Date().getTime() - start));
            if (insideComment) {
                log("Returning an empty list because completion was inside a comment.");
                return undefined;
            }
            start = new Date().getTime();
            var previousToken = ts.findPrecedingToken(position, sourceFile);
            log("getCompletionData: Get previous token 1: " + (new Date().getTime() - start));
            var contextToken = previousToken;
            if (contextToken && position <= contextToken.end && ts.isWord(contextToken.kind)) {
                var start_2 = new Date().getTime();
                contextToken = ts.findPrecedingToken(contextToken.getFullStart(), sourceFile);
                log("getCompletionData: Get previous token 2: " + (new Date().getTime() - start_2));
            }
            if (contextToken && isCompletionListBlocker(contextToken)) {
                log("Returning an empty list because completion was requested in an invalid position.");
                return undefined;
            }
            var node = currentToken;
            var isRightOfDot = false;
            if (contextToken && contextToken.kind === 20 && contextToken.parent.kind === 156) {
                node = contextToken.parent.expression;
                isRightOfDot = true;
            }
            else if (contextToken && contextToken.kind === 20 && contextToken.parent.kind === 127) {
                node = contextToken.parent.left;
                isRightOfDot = true;
            }
            var location = ts.getTouchingPropertyName(sourceFile, position);
            var target = program.getCompilerOptions().target;
            var semanticStart = new Date().getTime();
            var isMemberCompletion;
            var isNewIdentifierLocation;
            var symbols = [];
            if (isRightOfDot) {
                getTypeScriptMemberSymbols();
            }
            else {
                if (!tryGetGlobalSymbols()) {
                    return undefined;
                }
            }
            log("getCompletionData: Semantic work: " + (new Date().getTime() - semanticStart));
            return { symbols: symbols, isMemberCompletion: isMemberCompletion, isNewIdentifierLocation: isNewIdentifierLocation, location: location, isRightOfDot: isRightOfDot };
            function getTypeScriptMemberSymbols() {
                isMemberCompletion = true;
                isNewIdentifierLocation = false;
                if (node.kind === 65 || node.kind === 127 || node.kind === 156) {
                    var symbol = typeChecker.getSymbolAtLocation(node);
                    if (symbol && symbol.flags & 8388608) {
                        symbol = typeChecker.getAliasedSymbol(symbol);
                    }
                    if (symbol && symbol.flags & 1952) {
                        var exportedSymbols = typeChecker.getExportsOfModule(symbol);
                        ts.forEach(exportedSymbols, function (symbol) {
                            if (typeChecker.isValidPropertyAccess((node.parent), symbol.name)) {
                                symbols.push(symbol);
                            }
                        });
                    }
                }
                var type = typeChecker.getTypeAtLocation(node);
                if (type) {
                    ts.forEach(type.getApparentProperties(), function (symbol) {
                        if (typeChecker.isValidPropertyAccess((node.parent), symbol.name)) {
                            symbols.push(symbol);
                        }
                    });
                }
            }
            function tryGetGlobalSymbols() {
                var containingObjectLiteral = getContainingObjectLiteralApplicableForCompletion(contextToken);
                if (containingObjectLiteral) {
                    isMemberCompletion = true;
                    isNewIdentifierLocation = true;
                    var contextualType = typeChecker.getContextualType(containingObjectLiteral);
                    if (!contextualType) {
                        return false;
                    }
                    var contextualTypeMembers = typeChecker.getPropertiesOfType(contextualType);
                    if (contextualTypeMembers && contextualTypeMembers.length > 0) {
                        symbols = filterContextualMembersList(contextualTypeMembers, containingObjectLiteral.properties);
                    }
                }
                else if (ts.getAncestor(contextToken, 211)) {
                    isMemberCompletion = true;
                    isNewIdentifierLocation = true;
                    if (showCompletionsInImportsClause(contextToken)) {
                        var importDeclaration = ts.getAncestor(contextToken, 210);
                        ts.Debug.assert(importDeclaration !== undefined);
                        var exports_2;
                        if (importDeclaration.moduleSpecifier) {
                            var moduleSpecifierSymbol = typeChecker.getSymbolAtLocation(importDeclaration.moduleSpecifier);
                            if (moduleSpecifierSymbol) {
                                exports_2 = typeChecker.getExportsOfModule(moduleSpecifierSymbol);
                            }
                        }
                        symbols = exports_2 ? filterModuleExports(exports_2, importDeclaration) : emptyArray;
                    }
                }
                else {
                    isMemberCompletion = false;
                    isNewIdentifierLocation = isNewIdentifierDefinitionLocation(contextToken);
                    if (previousToken !== contextToken) {
                        ts.Debug.assert(!!previousToken, "Expected 'contextToken' to be defined when different from 'previousToken'.");
                    }
                    var adjustedPosition = previousToken !== contextToken ?
                        previousToken.getStart() :
                        position;
                    var scopeNode = getScopeNode(contextToken, adjustedPosition, sourceFile) || sourceFile;
                    var symbolMeanings = 793056 | 107455 | 1536 | 8388608;
                    symbols = typeChecker.getSymbolsInScope(scopeNode, symbolMeanings);
                }
                return true;
            }
            function getScopeNode(initialToken, position, sourceFile) {
                var scope = initialToken;
                while (scope && !ts.positionBelongsToNode(scope, position, sourceFile)) {
                    scope = scope.parent;
                }
                return scope;
            }
            function isCompletionListBlocker(previousToken) {
                var start = new Date().getTime();
                var result = isInStringOrRegularExpressionOrTemplateLiteral(previousToken) ||
                    isIdentifierDefinitionLocation(previousToken) ||
                    isRightOfIllegalDot(previousToken);
                log("getCompletionsAtPosition: isCompletionListBlocker: " + (new Date().getTime() - start));
                return result;
            }
            function showCompletionsInImportsClause(node) {
                if (node) {
                    if (node.kind === 14 || node.kind === 23) {
                        return node.parent.kind === 213;
                    }
                }
                return false;
            }
            function isNewIdentifierDefinitionLocation(previousToken) {
                if (previousToken) {
                    var containingNodeKind = previousToken.parent.kind;
                    switch (previousToken.kind) {
                        case 23:
                            return containingNodeKind === 158
                                || containingNodeKind === 136
                                || containingNodeKind === 159
                                || containingNodeKind === 154
                                || containingNodeKind === 170
                                || containingNodeKind === 143;
                        case 16:
                            return containingNodeKind === 158
                                || containingNodeKind === 136
                                || containingNodeKind === 159
                                || containingNodeKind === 162
                                || containingNodeKind === 150;
                        case 18:
                            return containingNodeKind === 154;
                        case 117:
                        case 118:
                            return true;
                        case 20:
                            return containingNodeKind === 206;
                        case 14:
                            return containingNodeKind === 202;
                        case 53:
                            return containingNodeKind === 199
                                || containingNodeKind === 170;
                        case 11:
                            return containingNodeKind === 172;
                        case 12:
                            return containingNodeKind === 178;
                        case 108:
                        case 106:
                        case 107:
                            return containingNodeKind === 133;
                    }
                    switch (previousToken.getText()) {
                        case "public":
                        case "protected":
                        case "private":
                            return true;
                    }
                }
                return false;
            }
            function isInStringOrRegularExpressionOrTemplateLiteral(previousToken) {
                if (previousToken.kind === 8
                    || previousToken.kind === 9
                    || ts.isTemplateLiteralKind(previousToken.kind)) {
                    var start_3 = previousToken.getStart();
                    var end = previousToken.getEnd();
                    if (start_3 < position && position < end) {
                        return true;
                    }
                    else if (position === end) {
                        return !!previousToken.isUnterminated;
                    }
                }
                return false;
            }
            function getContainingObjectLiteralApplicableForCompletion(previousToken) {
                // The locations in an object literal expression that are applicable for completion are property name definition locations.
                if (previousToken) {
                    var parent_8 = previousToken.parent;
                    switch (previousToken.kind) {
                        case 14:
                        case 23:
                            if (parent_8 && parent_8.kind === 155) {
                                return parent_8;
                            }
                            break;
                    }
                }
                return undefined;
            }
            function isFunction(kind) {
                switch (kind) {
                    case 163:
                    case 164:
                    case 201:
                    case 135:
                    case 134:
                    case 137:
                    case 138:
                    case 139:
                    case 140:
                    case 141:
                        return true;
                }
                return false;
            }
            function isIdentifierDefinitionLocation(previousToken) {
                if (previousToken) {
                    var containingNodeKind = previousToken.parent.kind;
                    switch (previousToken.kind) {
                        case 23:
                            return containingNodeKind === 199 ||
                                containingNodeKind === 200 ||
                                containingNodeKind === 181 ||
                                containingNodeKind === 205 ||
                                isFunction(containingNodeKind) ||
                                containingNodeKind === 202 ||
                                containingNodeKind === 201 ||
                                containingNodeKind === 203 ||
                                containingNodeKind === 152 ||
                                containingNodeKind === 151;
                        case 20:
                            return containingNodeKind === 152;
                        case 51:
                            return containingNodeKind === 153;
                        case 18:
                            return containingNodeKind === 152;
                        case 16:
                            return containingNodeKind === 224 ||
                                isFunction(containingNodeKind);
                        case 14:
                            return containingNodeKind === 205 ||
                                containingNodeKind === 203 ||
                                containingNodeKind === 146 ||
                                containingNodeKind === 151;
                        case 22:
                            return containingNodeKind === 132 &&
                                previousToken.parent && previousToken.parent.parent &&
                                (previousToken.parent.parent.kind === 203 ||
                                    previousToken.parent.parent.kind === 146);
                        case 24:
                            return containingNodeKind === 202 ||
                                containingNodeKind === 201 ||
                                containingNodeKind === 203 ||
                                isFunction(containingNodeKind);
                        case 109:
                            return containingNodeKind === 133;
                        case 21:
                            return containingNodeKind === 130 ||
                                containingNodeKind === 136 ||
                                (previousToken.parent && previousToken.parent.parent &&
                                    previousToken.parent.parent.kind === 152);
                        case 108:
                        case 106:
                        case 107:
                            return containingNodeKind === 130;
                        case 69:
                        case 77:
                        case 103:
                        case 83:
                        case 98:
                        case 116:
                        case 121:
                        case 85:
                        case 104:
                        case 70:
                        case 110:
                        case 124:
                            return true;
                    }
                    switch (previousToken.getText()) {
                        case "class":
                        case "interface":
                        case "enum":
                        case "function":
                        case "var":
                        case "static":
                        case "let":
                        case "const":
                        case "yield":
                            return true;
                    }
                }
                return false;
            }
            function isRightOfIllegalDot(previousToken) {
                if (previousToken && previousToken.kind === 7) {
                    var text = previousToken.getFullText();
                    return text.charAt(text.length - 1) === ".";
                }
                return false;
            }
            function filterModuleExports(exports, importDeclaration) {
                var exisingImports = {};
                if (!importDeclaration.importClause) {
                    return exports;
                }
                if (importDeclaration.importClause.namedBindings &&
                    importDeclaration.importClause.namedBindings.kind === 213) {
                    ts.forEach(importDeclaration.importClause.namedBindings.elements, function (el) {
                        var name = el.propertyName || el.name;
                        exisingImports[name.text] = true;
                    });
                }
                if (ts.isEmpty(exisingImports)) {
                    return exports;
                }
                return ts.filter(exports, function (e) { return !ts.lookUp(exisingImports, e.name); });
            }
            function filterContextualMembersList(contextualMemberSymbols, existingMembers) {
                if (!existingMembers || existingMembers.length === 0) {
                    return contextualMemberSymbols;
                }
                var existingMemberNames = {};
                ts.forEach(existingMembers, function (m) {
                    if (m.kind !== 225 && m.kind !== 226) {
                        return;
                    }
                    if (m.getStart() <= position && position <= m.getEnd()) {
                        return;
                    }
                    existingMemberNames[m.name.text] = true;
                });
                var filteredMembers = [];
                ts.forEach(contextualMemberSymbols, function (s) {
                    if (!existingMemberNames[s.name]) {
                        filteredMembers.push(s);
                    }
                });
                return filteredMembers;
            }
        }
        function getCompletionsAtPosition(fileName, position) {
            synchronizeHostData();
            var completionData = getCompletionData(fileName, position);
            if (!completionData) {
                return undefined;
            }
            var symbols = completionData.symbols, isMemberCompletion = completionData.isMemberCompletion, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, isRightOfDot = completionData.isRightOfDot;
            var entries;
            if (isRightOfDot && ts.isJavaScript(fileName)) {
                entries = getCompletionEntriesFromSymbols(symbols);
                ts.addRange(entries, getJavaScriptCompletionEntries());
            }
            else {
                if (!symbols || symbols.length === 0) {
                    return undefined;
                }
                entries = getCompletionEntriesFromSymbols(symbols);
            }
            if (!isMemberCompletion) {
                ts.addRange(entries, keywordCompletions);
            }
            return { isMemberCompletion: isMemberCompletion, isNewIdentifierLocation: isNewIdentifierLocation, entries: entries };
            function getJavaScriptCompletionEntries() {
                var entries = [];
                var allNames = {};
                var target = program.getCompilerOptions().target;
                for (var _i = 0, _a = program.getSourceFiles(); _i < _a.length; _i++) {
                    var sourceFile = _a[_i];
                    var nameTable = getNameTable(sourceFile);
                    for (var name_26 in nameTable) {
                        if (!allNames[name_26]) {
                            allNames[name_26] = name_26;
                            var displayName = getCompletionEntryDisplayName(name_26, target, true);
                            if (displayName) {
                                var entry = {
                                    name: displayName,
                                    kind: ScriptElementKind.warning,
                                    kindModifiers: "",
                                    sortText: "1"
                                };
                                entries.push(entry);
                            }
                        }
                    }
                }
                return entries;
            }
            function createCompletionEntry(symbol, location) {
                var displayName = getCompletionEntryDisplayNameForSymbol(symbol, program.getCompilerOptions().target, true);
                if (!displayName) {
                    return undefined;
                }
                return {
                    name: displayName,
                    kind: getSymbolKind(symbol, location),
                    kindModifiers: getSymbolModifiers(symbol),
                    sortText: "0"
                };
            }
            function getCompletionEntriesFromSymbols(symbols) {
                var start = new Date().getTime();
                var entries = [];
                if (symbols) {
                    var nameToSymbol = {};
                    for (var _i = 0; _i < symbols.length; _i++) {
                        var symbol = symbols[_i];
                        var entry = createCompletionEntry(symbol, location);
                        if (entry) {
                            var id = ts.escapeIdentifier(entry.name);
                            if (!ts.lookUp(nameToSymbol, id)) {
                                entries.push(entry);
                                nameToSymbol[id] = symbol;
                            }
                        }
                    }
                }
                log("getCompletionsAtPosition: getCompletionEntriesFromSymbols: " + (new Date().getTime() - start));
                return entries;
            }
        }
        function getCompletionEntryDetails(fileName, position, entryName) {
            synchronizeHostData();
            var completionData = getCompletionData(fileName, position);
            if (completionData) {
                var symbols = completionData.symbols, location_2 = completionData.location;
                var target = program.getCompilerOptions().target;
                var symbol = ts.forEach(symbols, function (s) { return getCompletionEntryDisplayNameForSymbol(s, target, false) === entryName ? s : undefined; });
                if (symbol) {
                    var displayPartsDocumentationsAndSymbolKind = getSymbolDisplayPartsDocumentationAndSymbolKind(symbol, getValidSourceFile(fileName), location_2, location_2, 7);
                    return {
                        name: entryName,
                        kind: displayPartsDocumentationsAndSymbolKind.symbolKind,
                        kindModifiers: getSymbolModifiers(symbol),
                        displayParts: displayPartsDocumentationsAndSymbolKind.displayParts,
                        documentation: displayPartsDocumentationsAndSymbolKind.documentation
                    };
                }
            }
            var keywordCompletion = ts.forEach(keywordCompletions, function (c) { return c.name === entryName; });
            if (keywordCompletion) {
                return {
                    name: entryName,
                    kind: ScriptElementKind.keyword,
                    kindModifiers: ScriptElementKindModifier.none,
                    displayParts: [ts.displayPart(entryName, SymbolDisplayPartKind.keyword)],
                    documentation: undefined
                };
            }
            return undefined;
        }
        function getSymbolKind(symbol, location) {
            var flags = symbol.getFlags();
            if (flags & 32)
                return ScriptElementKind.classElement;
            if (flags & 384)
                return ScriptElementKind.enumElement;
            if (flags & 524288)
                return ScriptElementKind.typeElement;
            if (flags & 64)
                return ScriptElementKind.interfaceElement;
            if (flags & 262144)
                return ScriptElementKind.typeParameterElement;
            var result = getSymbolKindOfConstructorPropertyMethodAccessorFunctionOrVar(symbol, flags, location);
            if (result === ScriptElementKind.unknown) {
                if (flags & 262144)
                    return ScriptElementKind.typeParameterElement;
                if (flags & 8)
                    return ScriptElementKind.variableElement;
                if (flags & 8388608)
                    return ScriptElementKind.alias;
                if (flags & 1536)
                    return ScriptElementKind.moduleElement;
            }
            return result;
        }
        function getSymbolKindOfConstructorPropertyMethodAccessorFunctionOrVar(symbol, flags, location) {
            var typeChecker = program.getTypeChecker();
            if (typeChecker.isUndefinedSymbol(symbol)) {
                return ScriptElementKind.variableElement;
            }
            if (typeChecker.isArgumentsSymbol(symbol)) {
                return ScriptElementKind.localVariableElement;
            }
            if (flags & 3) {
                if (ts.isFirstDeclarationOfSymbolParameter(symbol)) {
                    return ScriptElementKind.parameterElement;
                }
                else if (symbol.valueDeclaration && ts.isConst(symbol.valueDeclaration)) {
                    return ScriptElementKind.constElement;
                }
                else if (ts.forEach(symbol.declarations, ts.isLet)) {
                    return ScriptElementKind.letElement;
                }
                return isLocalVariableOrFunction(symbol) ? ScriptElementKind.localVariableElement : ScriptElementKind.variableElement;
            }
            if (flags & 16)
                return isLocalVariableOrFunction(symbol) ? ScriptElementKind.localFunctionElement : ScriptElementKind.functionElement;
            if (flags & 32768)
                return ScriptElementKind.memberGetAccessorElement;
            if (flags & 65536)
                return ScriptElementKind.memberSetAccessorElement;
            if (flags & 8192)
                return ScriptElementKind.memberFunctionElement;
            if (flags & 16384)
                return ScriptElementKind.constructorImplementationElement;
            if (flags & 4) {
                if (flags & 268435456) {
                    var unionPropertyKind = ts.forEach(typeChecker.getRootSymbols(symbol), function (rootSymbol) {
                        var rootSymbolFlags = rootSymbol.getFlags();
                        if (rootSymbolFlags & (98308 | 3)) {
                            return ScriptElementKind.memberVariableElement;
                        }
                        ts.Debug.assert(!!(rootSymbolFlags & 8192));
                    });
                    if (!unionPropertyKind) {
                        var typeOfUnionProperty = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                        if (typeOfUnionProperty.getCallSignatures().length) {
                            return ScriptElementKind.memberFunctionElement;
                        }
                        return ScriptElementKind.memberVariableElement;
                    }
                    return unionPropertyKind;
                }
                return ScriptElementKind.memberVariableElement;
            }
            return ScriptElementKind.unknown;
        }
        function getSymbolModifiers(symbol) {
            return symbol && symbol.declarations && symbol.declarations.length > 0
                ? ts.getNodeModifiers(symbol.declarations[0])
                : ScriptElementKindModifier.none;
        }
        function getSymbolDisplayPartsDocumentationAndSymbolKind(symbol, sourceFile, enclosingDeclaration, location, semanticMeaning) {
            if (semanticMeaning === void 0) { semanticMeaning = getMeaningFromLocation(location); }
            var typeChecker = program.getTypeChecker();
            var displayParts = [];
            var documentation;
            var symbolFlags = symbol.flags;
            var symbolKind = getSymbolKindOfConstructorPropertyMethodAccessorFunctionOrVar(symbol, symbolFlags, location);
            var hasAddedSymbolInfo;
            var type;
            if (symbolKind !== ScriptElementKind.unknown || symbolFlags & 32 || symbolFlags & 8388608) {
                if (symbolKind === ScriptElementKind.memberGetAccessorElement || symbolKind === ScriptElementKind.memberSetAccessorElement) {
                    symbolKind = ScriptElementKind.memberVariableElement;
                }
                var signature;
                type = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                if (type) {
                    if (location.parent && location.parent.kind === 156) {
                        var right = location.parent.name;
                        if (right === location || (right && right.getFullWidth() === 0)) {
                            location = location.parent;
                        }
                    }
                    var callExpression;
                    if (location.kind === 158 || location.kind === 159) {
                        callExpression = location;
                    }
                    else if (isCallExpressionTarget(location) || isNewExpressionTarget(location)) {
                        callExpression = location.parent;
                    }
                    if (callExpression) {
                        var candidateSignatures = [];
                        signature = typeChecker.getResolvedSignature(callExpression, candidateSignatures);
                        if (!signature && candidateSignatures.length) {
                            signature = candidateSignatures[0];
                        }
                        var useConstructSignatures = callExpression.kind === 159 || callExpression.expression.kind === 91;
                        var allSignatures = useConstructSignatures ? type.getConstructSignatures() : type.getCallSignatures();
                        if (!ts.contains(allSignatures, signature.target || signature)) {
                            signature = allSignatures.length ? allSignatures[0] : undefined;
                        }
                        if (signature) {
                            if (useConstructSignatures && (symbolFlags & 32)) {
                                symbolKind = ScriptElementKind.constructorImplementationElement;
                                addPrefixForAnyFunctionOrVar(type.symbol, symbolKind);
                            }
                            else if (symbolFlags & 8388608) {
                                symbolKind = ScriptElementKind.alias;
                                pushTypePart(symbolKind);
                                displayParts.push(ts.spacePart());
                                if (useConstructSignatures) {
                                    displayParts.push(ts.keywordPart(88));
                                    displayParts.push(ts.spacePart());
                                }
                                addFullSymbolName(symbol);
                            }
                            else {
                                addPrefixForAnyFunctionOrVar(symbol, symbolKind);
                            }
                            switch (symbolKind) {
                                case ScriptElementKind.memberVariableElement:
                                case ScriptElementKind.variableElement:
                                case ScriptElementKind.constElement:
                                case ScriptElementKind.letElement:
                                case ScriptElementKind.parameterElement:
                                case ScriptElementKind.localVariableElement:
                                    displayParts.push(ts.punctuationPart(51));
                                    displayParts.push(ts.spacePart());
                                    if (useConstructSignatures) {
                                        displayParts.push(ts.keywordPart(88));
                                        displayParts.push(ts.spacePart());
                                    }
                                    if (!(type.flags & 32768)) {
                                        displayParts.push.apply(displayParts, ts.symbolToDisplayParts(typeChecker, type.symbol, enclosingDeclaration, undefined, 1));
                                    }
                                    addSignatureDisplayParts(signature, allSignatures, 8);
                                    break;
                                default:
                                    addSignatureDisplayParts(signature, allSignatures);
                            }
                            hasAddedSymbolInfo = true;
                        }
                    }
                    else if ((isNameOfFunctionDeclaration(location) && !(symbol.flags & 98304)) ||
                        (location.kind === 114 && location.parent.kind === 136)) {
                        var functionDeclaration = location.parent;
                        var allSignatures = functionDeclaration.kind === 136 ? type.getConstructSignatures() : type.getCallSignatures();
                        if (!typeChecker.isImplementationOfOverload(functionDeclaration)) {
                            signature = typeChecker.getSignatureFromDeclaration(functionDeclaration);
                        }
                        else {
                            signature = allSignatures[0];
                        }
                        if (functionDeclaration.kind === 136) {
                            symbolKind = ScriptElementKind.constructorImplementationElement;
                            addPrefixForAnyFunctionOrVar(type.symbol, symbolKind);
                        }
                        else {
                            addPrefixForAnyFunctionOrVar(functionDeclaration.kind === 139 &&
                                !(type.symbol.flags & 2048 || type.symbol.flags & 4096) ? type.symbol : symbol, symbolKind);
                        }
                        addSignatureDisplayParts(signature, allSignatures);
                        hasAddedSymbolInfo = true;
                    }
                }
            }
            if (symbolFlags & 32 && !hasAddedSymbolInfo) {
                displayParts.push(ts.keywordPart(69));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
                writeTypeParametersOfSymbol(symbol, sourceFile);
            }
            if ((symbolFlags & 64) && (semanticMeaning & 2)) {
                addNewLineIfDisplayPartsExist();
                displayParts.push(ts.keywordPart(103));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
                writeTypeParametersOfSymbol(symbol, sourceFile);
            }
            if (symbolFlags & 524288) {
                addNewLineIfDisplayPartsExist();
                displayParts.push(ts.keywordPart(124));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
                displayParts.push(ts.spacePart());
                displayParts.push(ts.operatorPart(53));
                displayParts.push(ts.spacePart());
                displayParts.push.apply(displayParts, ts.typeToDisplayParts(typeChecker, typeChecker.getDeclaredTypeOfSymbol(symbol), enclosingDeclaration));
            }
            if (symbolFlags & 384) {
                addNewLineIfDisplayPartsExist();
                if (ts.forEach(symbol.declarations, ts.isConstEnumDeclaration)) {
                    displayParts.push(ts.keywordPart(70));
                    displayParts.push(ts.spacePart());
                }
                displayParts.push(ts.keywordPart(77));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
            }
            if (symbolFlags & 1536) {
                addNewLineIfDisplayPartsExist();
                var declaration = ts.getDeclarationOfKind(symbol, 206);
                var isNamespace = declaration && declaration.name && declaration.name.kind === 65;
                displayParts.push(ts.keywordPart(isNamespace ? 118 : 117));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
            }
            if ((symbolFlags & 262144) && (semanticMeaning & 2)) {
                addNewLineIfDisplayPartsExist();
                displayParts.push(ts.punctuationPart(16));
                displayParts.push(ts.textPart("type parameter"));
                displayParts.push(ts.punctuationPart(17));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
                displayParts.push(ts.spacePart());
                displayParts.push(ts.keywordPart(86));
                displayParts.push(ts.spacePart());
                if (symbol.parent) {
                    addFullSymbolName(symbol.parent, enclosingDeclaration);
                    writeTypeParametersOfSymbol(symbol.parent, enclosingDeclaration);
                }
                else {
                    var signatureDeclaration = ts.getDeclarationOfKind(symbol, 129).parent;
                    var signature = typeChecker.getSignatureFromDeclaration(signatureDeclaration);
                    if (signatureDeclaration.kind === 140) {
                        displayParts.push(ts.keywordPart(88));
                        displayParts.push(ts.spacePart());
                    }
                    else if (signatureDeclaration.kind !== 139 && signatureDeclaration.name) {
                        addFullSymbolName(signatureDeclaration.symbol);
                    }
                    displayParts.push.apply(displayParts, ts.signatureToDisplayParts(typeChecker, signature, sourceFile, 32));
                }
            }
            if (symbolFlags & 8) {
                addPrefixForAnyFunctionOrVar(symbol, "enum member");
                var declaration = symbol.declarations[0];
                if (declaration.kind === 227) {
                    var constantValue = typeChecker.getConstantValue(declaration);
                    if (constantValue !== undefined) {
                        displayParts.push(ts.spacePart());
                        displayParts.push(ts.operatorPart(53));
                        displayParts.push(ts.spacePart());
                        displayParts.push(ts.displayPart(constantValue.toString(), SymbolDisplayPartKind.numericLiteral));
                    }
                }
            }
            if (symbolFlags & 8388608) {
                addNewLineIfDisplayPartsExist();
                displayParts.push(ts.keywordPart(85));
                displayParts.push(ts.spacePart());
                addFullSymbolName(symbol);
                ts.forEach(symbol.declarations, function (declaration) {
                    if (declaration.kind === 209) {
                        var importEqualsDeclaration = declaration;
                        if (ts.isExternalModuleImportEqualsDeclaration(importEqualsDeclaration)) {
                            displayParts.push(ts.spacePart());
                            displayParts.push(ts.operatorPart(53));
                            displayParts.push(ts.spacePart());
                            displayParts.push(ts.keywordPart(119));
                            displayParts.push(ts.punctuationPart(16));
                            displayParts.push(ts.displayPart(ts.getTextOfNode(ts.getExternalModuleImportEqualsDeclarationExpression(importEqualsDeclaration)), SymbolDisplayPartKind.stringLiteral));
                            displayParts.push(ts.punctuationPart(17));
                        }
                        else {
                            var internalAliasSymbol = typeChecker.getSymbolAtLocation(importEqualsDeclaration.moduleReference);
                            if (internalAliasSymbol) {
                                displayParts.push(ts.spacePart());
                                displayParts.push(ts.operatorPart(53));
                                displayParts.push(ts.spacePart());
                                addFullSymbolName(internalAliasSymbol, enclosingDeclaration);
                            }
                        }
                        return true;
                    }
                });
            }
            if (!hasAddedSymbolInfo) {
                if (symbolKind !== ScriptElementKind.unknown) {
                    if (type) {
                        addPrefixForAnyFunctionOrVar(symbol, symbolKind);
                        if (symbolKind === ScriptElementKind.memberVariableElement ||
                            symbolFlags & 3 ||
                            symbolKind === ScriptElementKind.localVariableElement) {
                            displayParts.push(ts.punctuationPart(51));
                            displayParts.push(ts.spacePart());
                            if (type.symbol && type.symbol.flags & 262144) {
                                var typeParameterParts = ts.mapToDisplayParts(function (writer) {
                                    typeChecker.getSymbolDisplayBuilder().buildTypeParameterDisplay(type, writer, enclosingDeclaration);
                                });
                                displayParts.push.apply(displayParts, typeParameterParts);
                            }
                            else {
                                displayParts.push.apply(displayParts, ts.typeToDisplayParts(typeChecker, type, enclosingDeclaration));
                            }
                        }
                        else if (symbolFlags & 16 ||
                            symbolFlags & 8192 ||
                            symbolFlags & 16384 ||
                            symbolFlags & 131072 ||
                            symbolFlags & 98304 ||
                            symbolKind === ScriptElementKind.memberFunctionElement) {
                            var allSignatures = type.getCallSignatures();
                            addSignatureDisplayParts(allSignatures[0], allSignatures);
                        }
                    }
                }
                else {
                    symbolKind = getSymbolKind(symbol, location);
                }
            }
            if (!documentation) {
                documentation = symbol.getDocumentationComment();
            }
            return { displayParts: displayParts, documentation: documentation, symbolKind: symbolKind };
            function addNewLineIfDisplayPartsExist() {
                if (displayParts.length) {
                    displayParts.push(ts.lineBreakPart());
                }
            }
            function addFullSymbolName(symbol, enclosingDeclaration) {
                var fullSymbolDisplayParts = ts.symbolToDisplayParts(typeChecker, symbol, enclosingDeclaration || sourceFile, undefined, 1 | 2);
                displayParts.push.apply(displayParts, fullSymbolDisplayParts);
            }
            function addPrefixForAnyFunctionOrVar(symbol, symbolKind) {
                addNewLineIfDisplayPartsExist();
                if (symbolKind) {
                    pushTypePart(symbolKind);
                    displayParts.push(ts.spacePart());
                    addFullSymbolName(symbol);
                }
            }
            function pushTypePart(symbolKind) {
                switch (symbolKind) {
                    case ScriptElementKind.variableElement:
                    case ScriptElementKind.functionElement:
                    case ScriptElementKind.letElement:
                    case ScriptElementKind.constElement:
                    case ScriptElementKind.constructorImplementationElement:
                        displayParts.push(ts.textOrKeywordPart(symbolKind));
                        return;
                    default:
                        displayParts.push(ts.punctuationPart(16));
                        displayParts.push(ts.textOrKeywordPart(symbolKind));
                        displayParts.push(ts.punctuationPart(17));
                        return;
                }
            }
            function addSignatureDisplayParts(signature, allSignatures, flags) {
                displayParts.push.apply(displayParts, ts.signatureToDisplayParts(typeChecker, signature, enclosingDeclaration, flags | 32));
                if (allSignatures.length > 1) {
                    displayParts.push(ts.spacePart());
                    displayParts.push(ts.punctuationPart(16));
                    displayParts.push(ts.operatorPart(33));
                    displayParts.push(ts.displayPart((allSignatures.length - 1).toString(), SymbolDisplayPartKind.numericLiteral));
                    displayParts.push(ts.spacePart());
                    displayParts.push(ts.textPart(allSignatures.length === 2 ? "overload" : "overloads"));
                    displayParts.push(ts.punctuationPart(17));
                }
                documentation = signature.getDocumentationComment();
            }
            function writeTypeParametersOfSymbol(symbol, enclosingDeclaration) {
                var typeParameterParts = ts.mapToDisplayParts(function (writer) {
                    typeChecker.getSymbolDisplayBuilder().buildTypeParameterDisplayFromSymbol(symbol, writer, enclosingDeclaration);
                });
                displayParts.push.apply(displayParts, typeParameterParts);
            }
        }
        function getQuickInfoAtPosition(fileName, position) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var node = ts.getTouchingPropertyName(sourceFile, position);
            if (!node) {
                return undefined;
            }
            if (isLabelName(node)) {
                return undefined;
            }
            var typeChecker = program.getTypeChecker();
            var symbol = typeChecker.getSymbolAtLocation(node);
            if (!symbol) {
                switch (node.kind) {
                    case 65:
                    case 156:
                    case 127:
                    case 93:
                    case 91:
                        var type = typeChecker.getTypeAtLocation(node);
                        if (type) {
                            return {
                                kind: ScriptElementKind.unknown,
                                kindModifiers: ScriptElementKindModifier.none,
                                textSpan: ts.createTextSpan(node.getStart(), node.getWidth()),
                                displayParts: ts.typeToDisplayParts(typeChecker, type, getContainerNode(node)),
                                documentation: type.symbol ? type.symbol.getDocumentationComment() : undefined
                            };
                        }
                }
                return undefined;
            }
            var displayPartsDocumentationsAndKind = getSymbolDisplayPartsDocumentationAndSymbolKind(symbol, sourceFile, getContainerNode(node), node);
            return {
                kind: displayPartsDocumentationsAndKind.symbolKind,
                kindModifiers: getSymbolModifiers(symbol),
                textSpan: ts.createTextSpan(node.getStart(), node.getWidth()),
                displayParts: displayPartsDocumentationsAndKind.displayParts,
                documentation: displayPartsDocumentationsAndKind.documentation
            };
        }
        function createDefinitionInfo(node, symbolKind, symbolName, containerName) {
            return {
                fileName: node.getSourceFile().fileName,
                textSpan: ts.createTextSpanFromBounds(node.getStart(), node.getEnd()),
                kind: symbolKind,
                name: symbolName,
                containerKind: undefined,
                containerName: containerName
            };
        }
        function getDefinitionFromSymbol(symbol, node) {
            var typeChecker = program.getTypeChecker();
            var result = [];
            var declarations = symbol.getDeclarations();
            var symbolName = typeChecker.symbolToString(symbol);
            var symbolKind = getSymbolKind(symbol, node);
            var containerSymbol = symbol.parent;
            var containerName = containerSymbol ? typeChecker.symbolToString(containerSymbol, node) : "";
            if (!tryAddConstructSignature(symbol, node, symbolKind, symbolName, containerName, result) &&
                !tryAddCallSignature(symbol, node, symbolKind, symbolName, containerName, result)) {
                ts.forEach(declarations, function (declaration) {
                    result.push(createDefinitionInfo(declaration, symbolKind, symbolName, containerName));
                });
            }
            return result;
            function tryAddConstructSignature(symbol, location, symbolKind, symbolName, containerName, result) {
                if (isNewExpressionTarget(location) || location.kind === 114) {
                    if (symbol.flags & 32) {
                        var classDeclaration = symbol.getDeclarations()[0];
                        ts.Debug.assert(classDeclaration && classDeclaration.kind === 202);
                        return tryAddSignature(classDeclaration.members, true, symbolKind, symbolName, containerName, result);
                    }
                }
                return false;
            }
            function tryAddCallSignature(symbol, location, symbolKind, symbolName, containerName, result) {
                if (isCallExpressionTarget(location) || isNewExpressionTarget(location) || isNameOfFunctionDeclaration(location)) {
                    return tryAddSignature(symbol.declarations, false, symbolKind, symbolName, containerName, result);
                }
                return false;
            }
            function tryAddSignature(signatureDeclarations, selectConstructors, symbolKind, symbolName, containerName, result) {
                var declarations = [];
                var definition;
                ts.forEach(signatureDeclarations, function (d) {
                    if ((selectConstructors && d.kind === 136) ||
                        (!selectConstructors && (d.kind === 201 || d.kind === 135 || d.kind === 134))) {
                        declarations.push(d);
                        if (d.body)
                            definition = d;
                    }
                });
                if (definition) {
                    result.push(createDefinitionInfo(definition, symbolKind, symbolName, containerName));
                    return true;
                }
                else if (declarations.length) {
                    result.push(createDefinitionInfo(ts.lastOrUndefined(declarations), symbolKind, symbolName, containerName));
                    return true;
                }
                return false;
            }
        }
        function getDefinitionAtPosition(fileName, position) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var node = ts.getTouchingPropertyName(sourceFile, position);
            if (!node) {
                return undefined;
            }
            if (isJumpStatementTarget(node)) {
                var labelName = node.text;
                var label = getTargetLabel(node.parent, node.text);
                return label ? [createDefinitionInfo(label, ScriptElementKind.label, labelName, undefined)] : undefined;
            }
            var comment = ts.forEach(sourceFile.referencedFiles, function (r) { return (r.pos <= position && position < r.end) ? r : undefined; });
            if (comment) {
                var referenceFile = ts.tryResolveScriptReference(program, sourceFile, comment);
                if (referenceFile) {
                    return [{
                            fileName: referenceFile.fileName,
                            textSpan: ts.createTextSpanFromBounds(0, 0),
                            kind: ScriptElementKind.scriptElement,
                            name: comment.fileName,
                            containerName: undefined,
                            containerKind: undefined
                        }];
                }
                return undefined;
            }
            var typeChecker = program.getTypeChecker();
            var symbol = typeChecker.getSymbolAtLocation(node);
            if (!symbol) {
                return undefined;
            }
            if (symbol.flags & 8388608) {
                var declaration = symbol.declarations[0];
                if (node.kind === 65 && node.parent === declaration) {
                    symbol = typeChecker.getAliasedSymbol(symbol);
                }
            }
            if (node.parent.kind === 226) {
                var shorthandSymbol = typeChecker.getShorthandAssignmentValueSymbol(symbol.valueDeclaration);
                if (!shorthandSymbol) {
                    return [];
                }
                var shorthandDeclarations = shorthandSymbol.getDeclarations();
                var shorthandSymbolKind = getSymbolKind(shorthandSymbol, node);
                var shorthandSymbolName = typeChecker.symbolToString(shorthandSymbol);
                var shorthandContainerName = typeChecker.symbolToString(symbol.parent, node);
                return ts.map(shorthandDeclarations, function (declaration) { return createDefinitionInfo(declaration, shorthandSymbolKind, shorthandSymbolName, shorthandContainerName); });
            }
            return getDefinitionFromSymbol(symbol, node);
        }
        function getTypeDefinitionAtPosition(fileName, position) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var node = ts.getTouchingPropertyName(sourceFile, position);
            if (!node) {
                return undefined;
            }
            var typeChecker = program.getTypeChecker();
            var symbol = typeChecker.getSymbolAtLocation(node);
            if (!symbol) {
                return undefined;
            }
            var type = typeChecker.getTypeOfSymbolAtLocation(symbol, node);
            if (!type) {
                return undefined;
            }
            if (type.flags & 16384) {
                var result = [];
                ts.forEach(type.types, function (t) {
                    if (t.symbol) {
                        result.push.apply(result, getDefinitionFromSymbol(t.symbol, node));
                    }
                });
                return result;
            }
            if (!type.symbol) {
                return undefined;
            }
            return getDefinitionFromSymbol(type.symbol, node);
        }
        function getOccurrencesAtPosition(fileName, position) {
            var results = getOccurrencesAtPositionCore(fileName, position);
            if (results) {
                var sourceFile = getCanonicalFileName(ts.normalizeSlashes(fileName));
                results = ts.filter(results, function (r) { return getCanonicalFileName(ts.normalizeSlashes(r.fileName)) === sourceFile; });
            }
            return results;
        }
        function getDocumentHighlights(fileName, position, filesToSearch) {
            synchronizeHostData();
            filesToSearch = ts.map(filesToSearch, ts.normalizeSlashes);
            var sourceFilesToSearch = ts.filter(program.getSourceFiles(), function (f) { return ts.contains(filesToSearch, f.fileName); });
            var sourceFile = getValidSourceFile(fileName);
            var node = ts.getTouchingWord(sourceFile, position);
            if (!node) {
                return undefined;
            }
            return getSemanticDocumentHighlights(node) || getSyntacticDocumentHighlights(node);
            function getHighlightSpanForNode(node) {
                var start = node.getStart();
                var end = node.getEnd();
                return {
                    fileName: sourceFile.fileName,
                    textSpan: ts.createTextSpanFromBounds(start, end),
                    kind: HighlightSpanKind.none
                };
            }
            function getSemanticDocumentHighlights(node) {
                if (node.kind === 65 ||
                    node.kind === 93 ||
                    node.kind === 91 ||
                    isLiteralNameOfPropertyDeclarationOrIndexAccess(node) ||
                    isNameOfExternalModuleImportOrDeclaration(node)) {
                    var referencedSymbols = getReferencedSymbolsForNodes(node, sourceFilesToSearch, false, false);
                    return convertReferencedSymbols(referencedSymbols);
                }
                return undefined;
                function convertReferencedSymbols(referencedSymbols) {
                    if (!referencedSymbols) {
                        return undefined;
                    }
                    var fileNameToDocumentHighlights = {};
                    var result = [];
                    for (var _i = 0; _i < referencedSymbols.length; _i++) {
                        var referencedSymbol = referencedSymbols[_i];
                        for (var _a = 0, _b = referencedSymbol.references; _a < _b.length; _a++) {
                            var referenceEntry = _b[_a];
                            var fileName_1 = referenceEntry.fileName;
                            var documentHighlights = ts.getProperty(fileNameToDocumentHighlights, fileName_1);
                            if (!documentHighlights) {
                                documentHighlights = { fileName: fileName_1, highlightSpans: [] };
                                fileNameToDocumentHighlights[fileName_1] = documentHighlights;
                                result.push(documentHighlights);
                            }
                            documentHighlights.highlightSpans.push({
                                textSpan: referenceEntry.textSpan,
                                kind: referenceEntry.isWriteAccess ? HighlightSpanKind.writtenReference : HighlightSpanKind.reference
                            });
                        }
                    }
                    return result;
                }
            }
            function getSyntacticDocumentHighlights(node) {
                var fileName = sourceFile.fileName;
                var highlightSpans = getHighlightSpans(node);
                if (!highlightSpans || highlightSpans.length === 0) {
                    return undefined;
                }
                return [{ fileName: fileName, highlightSpans: highlightSpans }];
                function hasKind(node, kind) {
                    return node !== undefined && node.kind === kind;
                }
                function parent(node) {
                    return node && node.parent;
                }
                function getHighlightSpans(node) {
                    if (node) {
                        switch (node.kind) {
                            case 84:
                            case 76:
                                if (hasKind(node.parent, 184)) {
                                    return getIfElseOccurrences(node.parent);
                                }
                                break;
                            case 90:
                                if (hasKind(node.parent, 192)) {
                                    return getReturnOccurrences(node.parent);
                                }
                                break;
                            case 94:
                                if (hasKind(node.parent, 196)) {
                                    return getThrowOccurrences(node.parent);
                                }
                                break;
                            case 68:
                                if (hasKind(parent(parent(node)), 197)) {
                                    return getTryCatchFinallyOccurrences(node.parent.parent);
                                }
                                break;
                            case 96:
                            case 81:
                                if (hasKind(parent(node), 197)) {
                                    return getTryCatchFinallyOccurrences(node.parent);
                                }
                                break;
                            case 92:
                                if (hasKind(node.parent, 194)) {
                                    return getSwitchCaseDefaultOccurrences(node.parent);
                                }
                                break;
                            case 67:
                            case 73:
                                if (hasKind(parent(parent(parent(node))), 194)) {
                                    return getSwitchCaseDefaultOccurrences(node.parent.parent.parent);
                                }
                                break;
                            case 66:
                            case 71:
                                if (hasKind(node.parent, 191) || hasKind(node.parent, 190)) {
                                    return getBreakOrContinueStatementOccurences(node.parent);
                                }
                                break;
                            case 82:
                                if (hasKind(node.parent, 187) ||
                                    hasKind(node.parent, 188) ||
                                    hasKind(node.parent, 189)) {
                                    return getLoopBreakContinueOccurrences(node.parent);
                                }
                                break;
                            case 100:
                            case 75:
                                if (hasKind(node.parent, 186) || hasKind(node.parent, 185)) {
                                    return getLoopBreakContinueOccurrences(node.parent);
                                }
                                break;
                            case 114:
                                if (hasKind(node.parent, 136)) {
                                    return getConstructorOccurrences(node.parent);
                                }
                                break;
                            case 116:
                            case 121:
                                if (hasKind(node.parent, 137) || hasKind(node.parent, 138)) {
                                    return getGetAndSetOccurrences(node.parent);
                                }
                            default:
                                if (ts.isModifier(node.kind) && node.parent &&
                                    (ts.isDeclaration(node.parent) || node.parent.kind === 181)) {
                                    return getModifierOccurrences(node.kind, node.parent);
                                }
                        }
                    }
                    return undefined;
                }
                function aggregateOwnedThrowStatements(node) {
                    var statementAccumulator = [];
                    aggregate(node);
                    return statementAccumulator;
                    function aggregate(node) {
                        if (node.kind === 196) {
                            statementAccumulator.push(node);
                        }
                        else if (node.kind === 197) {
                            var tryStatement = node;
                            if (tryStatement.catchClause) {
                                aggregate(tryStatement.catchClause);
                            }
                            else {
                                aggregate(tryStatement.tryBlock);
                            }
                            if (tryStatement.finallyBlock) {
                                aggregate(tryStatement.finallyBlock);
                            }
                        }
                        else if (!ts.isFunctionLike(node)) {
                            ts.forEachChild(node, aggregate);
                        }
                    }
                    ;
                }
                function getThrowStatementOwner(throwStatement) {
                    var child = throwStatement;
                    while (child.parent) {
                        var parent_9 = child.parent;
                        if (ts.isFunctionBlock(parent_9) || parent_9.kind === 228) {
                            return parent_9;
                        }
                        if (parent_9.kind === 197) {
                            var tryStatement = parent_9;
                            if (tryStatement.tryBlock === child && tryStatement.catchClause) {
                                return child;
                            }
                        }
                        child = parent_9;
                    }
                    return undefined;
                }
                function aggregateAllBreakAndContinueStatements(node) {
                    var statementAccumulator = [];
                    aggregate(node);
                    return statementAccumulator;
                    function aggregate(node) {
                        if (node.kind === 191 || node.kind === 190) {
                            statementAccumulator.push(node);
                        }
                        else if (!ts.isFunctionLike(node)) {
                            ts.forEachChild(node, aggregate);
                        }
                    }
                    ;
                }
                function ownsBreakOrContinueStatement(owner, statement) {
                    var actualOwner = getBreakOrContinueOwner(statement);
                    return actualOwner && actualOwner === owner;
                }
                function getBreakOrContinueOwner(statement) {
                    for (var node_1 = statement.parent; node_1; node_1 = node_1.parent) {
                        switch (node_1.kind) {
                            case 194:
                                if (statement.kind === 190) {
                                    continue;
                                }
                            case 187:
                            case 188:
                            case 189:
                            case 186:
                            case 185:
                                if (!statement.label || isLabeledBy(node_1, statement.label.text)) {
                                    return node_1;
                                }
                                break;
                            default:
                                if (ts.isFunctionLike(node_1)) {
                                    return undefined;
                                }
                                break;
                        }
                    }
                    return undefined;
                }
                function getModifierOccurrences(modifier, declaration) {
                    var container = declaration.parent;
                    if (ts.isAccessibilityModifier(modifier)) {
                        if (!(container.kind === 202 ||
                            (declaration.kind === 130 && hasKind(container, 136)))) {
                            return undefined;
                        }
                    }
                    else if (modifier === 109) {
                        if (container.kind !== 202) {
                            return undefined;
                        }
                    }
                    else if (modifier === 78 || modifier === 115) {
                        if (!(container.kind === 207 || container.kind === 228)) {
                            return undefined;
                        }
                    }
                    else {
                        return undefined;
                    }
                    var keywords = [];
                    var modifierFlag = getFlagFromModifier(modifier);
                    var nodes;
                    switch (container.kind) {
                        case 207:
                        case 228:
                            nodes = container.statements;
                            break;
                        case 136:
                            nodes = container.parameters.concat(container.parent.members);
                            break;
                        case 202:
                            nodes = container.members;
                            if (modifierFlag & 112) {
                                var constructor = ts.forEach(container.members, function (member) {
                                    return member.kind === 136 && member;
                                });
                                if (constructor) {
                                    nodes = nodes.concat(constructor.parameters);
                                }
                            }
                            break;
                        default:
                            ts.Debug.fail("Invalid container kind.");
                    }
                    ts.forEach(nodes, function (node) {
                        if (node.modifiers && node.flags & modifierFlag) {
                            ts.forEach(node.modifiers, function (child) { return pushKeywordIf(keywords, child, modifier); });
                        }
                    });
                    return ts.map(keywords, getHighlightSpanForNode);
                    function getFlagFromModifier(modifier) {
                        switch (modifier) {
                            case 108:
                                return 16;
                            case 106:
                                return 32;
                            case 107:
                                return 64;
                            case 109:
                                return 128;
                            case 78:
                                return 1;
                            case 115:
                                return 2;
                            default:
                                ts.Debug.fail();
                        }
                    }
                }
                function pushKeywordIf(keywordList, token) {
                    var expected = [];
                    for (var _i = 2; _i < arguments.length; _i++) {
                        expected[_i - 2] = arguments[_i];
                    }
                    if (token && ts.contains(expected, token.kind)) {
                        keywordList.push(token);
                        return true;
                    }
                    return false;
                }
                function getGetAndSetOccurrences(accessorDeclaration) {
                    var keywords = [];
                    tryPushAccessorKeyword(accessorDeclaration.symbol, 137);
                    tryPushAccessorKeyword(accessorDeclaration.symbol, 138);
                    return ts.map(keywords, getHighlightSpanForNode);
                    function tryPushAccessorKeyword(accessorSymbol, accessorKind) {
                        var accessor = ts.getDeclarationOfKind(accessorSymbol, accessorKind);
                        if (accessor) {
                            ts.forEach(accessor.getChildren(), function (child) { return pushKeywordIf(keywords, child, 116, 121); });
                        }
                    }
                }
                function getConstructorOccurrences(constructorDeclaration) {
                    var declarations = constructorDeclaration.symbol.getDeclarations();
                    var keywords = [];
                    ts.forEach(declarations, function (declaration) {
                        ts.forEach(declaration.getChildren(), function (token) {
                            return pushKeywordIf(keywords, token, 114);
                        });
                    });
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getLoopBreakContinueOccurrences(loopNode) {
                    var keywords = [];
                    if (pushKeywordIf(keywords, loopNode.getFirstToken(), 82, 100, 75)) {
                        if (loopNode.kind === 185) {
                            var loopTokens = loopNode.getChildren();
                            for (var i = loopTokens.length - 1; i >= 0; i--) {
                                if (pushKeywordIf(keywords, loopTokens[i], 100)) {
                                    break;
                                }
                            }
                        }
                    }
                    var breaksAndContinues = aggregateAllBreakAndContinueStatements(loopNode.statement);
                    ts.forEach(breaksAndContinues, function (statement) {
                        if (ownsBreakOrContinueStatement(loopNode, statement)) {
                            pushKeywordIf(keywords, statement.getFirstToken(), 66, 71);
                        }
                    });
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getBreakOrContinueStatementOccurences(breakOrContinueStatement) {
                    var owner = getBreakOrContinueOwner(breakOrContinueStatement);
                    if (owner) {
                        switch (owner.kind) {
                            case 187:
                            case 188:
                            case 189:
                            case 185:
                            case 186:
                                return getLoopBreakContinueOccurrences(owner);
                            case 194:
                                return getSwitchCaseDefaultOccurrences(owner);
                        }
                    }
                    return undefined;
                }
                function getSwitchCaseDefaultOccurrences(switchStatement) {
                    var keywords = [];
                    pushKeywordIf(keywords, switchStatement.getFirstToken(), 92);
                    ts.forEach(switchStatement.caseBlock.clauses, function (clause) {
                        pushKeywordIf(keywords, clause.getFirstToken(), 67, 73);
                        var breaksAndContinues = aggregateAllBreakAndContinueStatements(clause);
                        ts.forEach(breaksAndContinues, function (statement) {
                            if (ownsBreakOrContinueStatement(switchStatement, statement)) {
                                pushKeywordIf(keywords, statement.getFirstToken(), 66);
                            }
                        });
                    });
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getTryCatchFinallyOccurrences(tryStatement) {
                    var keywords = [];
                    pushKeywordIf(keywords, tryStatement.getFirstToken(), 96);
                    if (tryStatement.catchClause) {
                        pushKeywordIf(keywords, tryStatement.catchClause.getFirstToken(), 68);
                    }
                    if (tryStatement.finallyBlock) {
                        var finallyKeyword = ts.findChildOfKind(tryStatement, 81, sourceFile);
                        pushKeywordIf(keywords, finallyKeyword, 81);
                    }
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getThrowOccurrences(throwStatement) {
                    var owner = getThrowStatementOwner(throwStatement);
                    if (!owner) {
                        return undefined;
                    }
                    var keywords = [];
                    ts.forEach(aggregateOwnedThrowStatements(owner), function (throwStatement) {
                        pushKeywordIf(keywords, throwStatement.getFirstToken(), 94);
                    });
                    if (ts.isFunctionBlock(owner)) {
                        ts.forEachReturnStatement(owner, function (returnStatement) {
                            pushKeywordIf(keywords, returnStatement.getFirstToken(), 90);
                        });
                    }
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getReturnOccurrences(returnStatement) {
                    var func = ts.getContainingFunction(returnStatement);
                    if (!(func && hasKind(func.body, 180))) {
                        return undefined;
                    }
                    var keywords = [];
                    ts.forEachReturnStatement(func.body, function (returnStatement) {
                        pushKeywordIf(keywords, returnStatement.getFirstToken(), 90);
                    });
                    ts.forEach(aggregateOwnedThrowStatements(func.body), function (throwStatement) {
                        pushKeywordIf(keywords, throwStatement.getFirstToken(), 94);
                    });
                    return ts.map(keywords, getHighlightSpanForNode);
                }
                function getIfElseOccurrences(ifStatement) {
                    var keywords = [];
                    while (hasKind(ifStatement.parent, 184) && ifStatement.parent.elseStatement === ifStatement) {
                        ifStatement = ifStatement.parent;
                    }
                    while (ifStatement) {
                        var children = ifStatement.getChildren();
                        pushKeywordIf(keywords, children[0], 84);
                        for (var i = children.length - 1; i >= 0; i--) {
                            if (pushKeywordIf(keywords, children[i], 76)) {
                                break;
                            }
                        }
                        if (!hasKind(ifStatement.elseStatement, 184)) {
                            break;
                        }
                        ifStatement = ifStatement.elseStatement;
                    }
                    var result = [];
                    for (var i = 0; i < keywords.length; i++) {
                        if (keywords[i].kind === 76 && i < keywords.length - 1) {
                            var elseKeyword = keywords[i];
                            var ifKeyword = keywords[i + 1];
                            var shouldCombindElseAndIf = true;
                            for (var j = ifKeyword.getStart() - 1; j >= elseKeyword.end; j--) {
                                if (!ts.isWhiteSpace(sourceFile.text.charCodeAt(j))) {
                                    shouldCombindElseAndIf = false;
                                    break;
                                }
                            }
                            if (shouldCombindElseAndIf) {
                                result.push({
                                    fileName: fileName,
                                    textSpan: ts.createTextSpanFromBounds(elseKeyword.getStart(), ifKeyword.end),
                                    kind: HighlightSpanKind.reference
                                });
                                i++;
                                continue;
                            }
                        }
                        result.push(getHighlightSpanForNode(keywords[i]));
                    }
                    return result;
                }
            }
        }
        function getOccurrencesAtPositionCore(fileName, position) {
            synchronizeHostData();
            return convertDocumentHighlights(getDocumentHighlights(fileName, position, [fileName]));
            function convertDocumentHighlights(documentHighlights) {
                if (!documentHighlights) {
                    return undefined;
                }
                var result = [];
                for (var _i = 0; _i < documentHighlights.length; _i++) {
                    var entry = documentHighlights[_i];
                    for (var _a = 0, _b = entry.highlightSpans; _a < _b.length; _a++) {
                        var highlightSpan = _b[_a];
                        result.push({
                            fileName: entry.fileName,
                            textSpan: highlightSpan.textSpan,
                            isWriteAccess: highlightSpan.kind === HighlightSpanKind.writtenReference
                        });
                    }
                }
                return result;
            }
        }
        function convertReferences(referenceSymbols) {
            if (!referenceSymbols) {
                return undefined;
            }
            var referenceEntries = [];
            for (var _i = 0; _i < referenceSymbols.length; _i++) {
                var referenceSymbol = referenceSymbols[_i];
                ts.addRange(referenceEntries, referenceSymbol.references);
            }
            return referenceEntries;
        }
        function findRenameLocations(fileName, position, findInStrings, findInComments) {
            var referencedSymbols = findReferencedSymbols(fileName, position, findInStrings, findInComments);
            return convertReferences(referencedSymbols);
        }
        function getReferencesAtPosition(fileName, position) {
            var referencedSymbols = findReferencedSymbols(fileName, position, false, false);
            return convertReferences(referencedSymbols);
        }
        function findReferences(fileName, position) {
            var referencedSymbols = findReferencedSymbols(fileName, position, false, false);
            return ts.filter(referencedSymbols, function (rs) { return !!rs.definition; });
        }
        function findReferencedSymbols(fileName, position, findInStrings, findInComments) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var node = ts.getTouchingPropertyName(sourceFile, position);
            if (!node) {
                return undefined;
            }
            if (node.kind !== 65 &&
                !isLiteralNameOfPropertyDeclarationOrIndexAccess(node) &&
                !isNameOfExternalModuleImportOrDeclaration(node)) {
                return undefined;
            }
            ts.Debug.assert(node.kind === 65 || node.kind === 7 || node.kind === 8);
            return getReferencedSymbolsForNodes(node, program.getSourceFiles(), findInStrings, findInComments);
        }
        function getReferencedSymbolsForNodes(node, sourceFiles, findInStrings, findInComments) {
            var typeChecker = program.getTypeChecker();
            if (isLabelName(node)) {
                if (isJumpStatementTarget(node)) {
                    var labelDefinition = getTargetLabel(node.parent, node.text);
                    return labelDefinition ? getLabelReferencesInNode(labelDefinition.parent, labelDefinition) : undefined;
                }
                else {
                    return getLabelReferencesInNode(node.parent, node);
                }
            }
            if (node.kind === 93) {
                return getReferencesForThisKeyword(node, sourceFiles);
            }
            if (node.kind === 91) {
                return getReferencesForSuperKeyword(node);
            }
            var symbol = typeChecker.getSymbolAtLocation(node);
            if (!symbol) {
                return undefined;
            }
            var declarations = symbol.declarations;
            if (!declarations || !declarations.length) {
                return undefined;
            }
            var result;
            var searchMeaning = getIntersectingMeaningFromDeclarations(getMeaningFromLocation(node), declarations);
            var declaredName = getDeclaredName(symbol, node);
            var scope = getSymbolScope(symbol);
            var symbolToIndex = [];
            if (scope) {
                result = [];
                getReferencesInNode(scope, symbol, declaredName, node, searchMeaning, findInStrings, findInComments, result, symbolToIndex);
            }
            else {
                var internedName = getInternedName(symbol, node, declarations);
                for (var _i = 0; _i < sourceFiles.length; _i++) {
                    var sourceFile = sourceFiles[_i];
                    cancellationToken.throwIfCancellationRequested();
                    var nameTable = getNameTable(sourceFile);
                    if (ts.lookUp(nameTable, internedName)) {
                        result = result || [];
                        getReferencesInNode(sourceFile, symbol, declaredName, node, searchMeaning, findInStrings, findInComments, result, symbolToIndex);
                    }
                }
            }
            return result;
            function getDefinition(symbol) {
                var info = getSymbolDisplayPartsDocumentationAndSymbolKind(symbol, node.getSourceFile(), getContainerNode(node), node);
                var name = ts.map(info.displayParts, function (p) { return p.text; }).join("");
                var declarations = symbol.declarations;
                if (!declarations || declarations.length === 0) {
                    return undefined;
                }
                return {
                    containerKind: "",
                    containerName: "",
                    name: name,
                    kind: info.symbolKind,
                    fileName: declarations[0].getSourceFile().fileName,
                    textSpan: ts.createTextSpan(declarations[0].getStart(), 0)
                };
            }
            function isImportOrExportSpecifierName(location) {
                return location.parent &&
                    (location.parent.kind === 214 || location.parent.kind === 218) &&
                    location.parent.propertyName === location;
            }
            function isImportOrExportSpecifierImportSymbol(symbol) {
                return (symbol.flags & 8388608) && ts.forEach(symbol.declarations, function (declaration) {
                    return declaration.kind === 214 || declaration.kind === 218;
                });
            }
            function getDeclaredName(symbol, location) {
                var functionExpression = ts.forEach(symbol.declarations, function (d) { return d.kind === 163 ? d : undefined; });
                var name;
                if (functionExpression && functionExpression.name) {
                    name = functionExpression.name.text;
                }
                if (isImportOrExportSpecifierName(location)) {
                    return location.getText();
                }
                name = typeChecker.symbolToString(symbol);
                return stripQuotes(name);
            }
            function getInternedName(symbol, location, declarations) {
                if (isImportOrExportSpecifierName(location)) {
                    return location.getText();
                }
                var functionExpression = ts.forEach(declarations, function (d) { return d.kind === 163 ? d : undefined; });
                var name = functionExpression && functionExpression.name
                    ? functionExpression.name.text
                    : symbol.name;
                return stripQuotes(name);
            }
            function stripQuotes(name) {
                var length = name.length;
                if (length >= 2 && name.charCodeAt(0) === 34 && name.charCodeAt(length - 1) === 34) {
                    return name.substring(1, length - 1);
                }
                ;
                return name;
            }
            function getSymbolScope(symbol) {
                if (symbol.flags & (4 | 8192)) {
                    var privateDeclaration = ts.forEach(symbol.getDeclarations(), function (d) { return (d.flags & 32) ? d : undefined; });
                    if (privateDeclaration) {
                        return ts.getAncestor(privateDeclaration, 202);
                    }
                }
                if (symbol.flags & 8388608) {
                    return undefined;
                }
                if (symbol.parent || (symbol.flags & 268435456)) {
                    return undefined;
                }
                var scope = undefined;
                var declarations = symbol.getDeclarations();
                if (declarations) {
                    for (var _i = 0; _i < declarations.length; _i++) {
                        var declaration = declarations[_i];
                        var container = getContainerNode(declaration);
                        if (!container) {
                            return undefined;
                        }
                        if (scope && scope !== container) {
                            return undefined;
                        }
                        if (container.kind === 228 && !ts.isExternalModule(container)) {
                            return undefined;
                        }
                        scope = container;
                    }
                }
                return scope;
            }
            function getPossibleSymbolReferencePositions(sourceFile, symbolName, start, end) {
                var positions = [];
                if (!symbolName || !symbolName.length) {
                    return positions;
                }
                var text = sourceFile.text;
                var sourceLength = text.length;
                var symbolNameLength = symbolName.length;
                var position = text.indexOf(symbolName, start);
                while (position >= 0) {
                    cancellationToken.throwIfCancellationRequested();
                    if (position > end)
                        break;
                    var endPosition = position + symbolNameLength;
                    if ((position === 0 || !ts.isIdentifierPart(text.charCodeAt(position - 1), 2)) &&
                        (endPosition === sourceLength || !ts.isIdentifierPart(text.charCodeAt(endPosition), 2))) {
                        positions.push(position);
                    }
                    position = text.indexOf(symbolName, position + symbolNameLength + 1);
                }
                return positions;
            }
            function getLabelReferencesInNode(container, targetLabel) {
                var references = [];
                var sourceFile = container.getSourceFile();
                var labelName = targetLabel.text;
                var possiblePositions = getPossibleSymbolReferencePositions(sourceFile, labelName, container.getStart(), container.getEnd());
                ts.forEach(possiblePositions, function (position) {
                    cancellationToken.throwIfCancellationRequested();
                    var node = ts.getTouchingWord(sourceFile, position);
                    if (!node || node.getWidth() !== labelName.length) {
                        return;
                    }
                    if (node === targetLabel ||
                        (isJumpStatementTarget(node) && getTargetLabel(node, labelName) === targetLabel)) {
                        references.push(getReferenceEntryFromNode(node));
                    }
                });
                var definition = {
                    containerKind: "",
                    containerName: "",
                    fileName: targetLabel.getSourceFile().fileName,
                    kind: ScriptElementKind.label,
                    name: labelName,
                    textSpan: ts.createTextSpanFromBounds(targetLabel.getStart(), targetLabel.getEnd())
                };
                return [{ definition: definition, references: references }];
            }
            function isValidReferencePosition(node, searchSymbolName) {
                if (node) {
                    switch (node.kind) {
                        case 65:
                            return node.getWidth() === searchSymbolName.length;
                        case 8:
                            if (isLiteralNameOfPropertyDeclarationOrIndexAccess(node) ||
                                isNameOfExternalModuleImportOrDeclaration(node)) {
                                return node.getWidth() === searchSymbolName.length + 2;
                            }
                            break;
                        case 7:
                            if (isLiteralNameOfPropertyDeclarationOrIndexAccess(node)) {
                                return node.getWidth() === searchSymbolName.length;
                            }
                            break;
                    }
                }
                return false;
            }
            function getReferencesInNode(container, searchSymbol, searchText, searchLocation, searchMeaning, findInStrings, findInComments, result, symbolToIndex) {
                var sourceFile = container.getSourceFile();
                var tripleSlashDirectivePrefixRegex = /^\/\/\/\s*</;
                var possiblePositions = getPossibleSymbolReferencePositions(sourceFile, searchText, container.getStart(), container.getEnd());
                if (possiblePositions.length) {
                    var searchSymbols = populateSearchSymbolSet(searchSymbol, searchLocation);
                    ts.forEach(possiblePositions, function (position) {
                        cancellationToken.throwIfCancellationRequested();
                        var referenceLocation = ts.getTouchingPropertyName(sourceFile, position);
                        if (!isValidReferencePosition(referenceLocation, searchText)) {
                            if ((findInStrings && isInString(position)) ||
                                (findInComments && isInComment(position))) {
                                result.push({
                                    definition: undefined,
                                    references: [{
                                            fileName: sourceFile.fileName,
                                            textSpan: ts.createTextSpan(position, searchText.length),
                                            isWriteAccess: false
                                        }]
                                });
                            }
                            return;
                        }
                        if (!(getMeaningFromLocation(referenceLocation) & searchMeaning)) {
                            return;
                        }
                        var referenceSymbol = typeChecker.getSymbolAtLocation(referenceLocation);
                        if (referenceSymbol) {
                            var referenceSymbolDeclaration = referenceSymbol.valueDeclaration;
                            var shorthandValueSymbol = typeChecker.getShorthandAssignmentValueSymbol(referenceSymbolDeclaration);
                            var relatedSymbol = getRelatedSymbol(searchSymbols, referenceSymbol, referenceLocation);
                            if (relatedSymbol) {
                                var referencedSymbol = getReferencedSymbol(relatedSymbol);
                                referencedSymbol.references.push(getReferenceEntryFromNode(referenceLocation));
                            }
                            else if (!(referenceSymbol.flags & 67108864) && searchSymbols.indexOf(shorthandValueSymbol) >= 0) {
                                var referencedSymbol = getReferencedSymbol(shorthandValueSymbol);
                                referencedSymbol.references.push(getReferenceEntryFromNode(referenceSymbolDeclaration.name));
                            }
                        }
                    });
                }
                return;
                function getReferencedSymbol(symbol) {
                    var symbolId = ts.getSymbolId(symbol);
                    var index = symbolToIndex[symbolId];
                    if (index === undefined) {
                        index = result.length;
                        symbolToIndex[symbolId] = index;
                        result.push({
                            definition: getDefinition(symbol),
                            references: []
                        });
                    }
                    return result[index];
                }
                function isInString(position) {
                    var token = ts.getTokenAtPosition(sourceFile, position);
                    return token && token.kind === 8 && position > token.getStart();
                }
                function isInComment(position) {
                    var token = ts.getTokenAtPosition(sourceFile, position);
                    if (token && position < token.getStart()) {
                        var commentRanges = ts.getLeadingCommentRanges(sourceFile.text, token.pos);
                        return ts.forEach(commentRanges, function (c) {
                            if (c.pos < position && position < c.end) {
                                var commentText = sourceFile.text.substring(c.pos, c.end);
                                if (!tripleSlashDirectivePrefixRegex.test(commentText)) {
                                    return true;
                                }
                            }
                        });
                    }
                    return false;
                }
            }
            function getReferencesForSuperKeyword(superKeyword) {
                var searchSpaceNode = ts.getSuperContainer(superKeyword, false);
                if (!searchSpaceNode) {
                    return undefined;
                }
                var staticFlag = 128;
                switch (searchSpaceNode.kind) {
                    case 133:
                    case 132:
                    case 135:
                    case 134:
                    case 136:
                    case 137:
                    case 138:
                        staticFlag &= searchSpaceNode.flags;
                        searchSpaceNode = searchSpaceNode.parent;
                        break;
                    default:
                        return undefined;
                }
                var references = [];
                var sourceFile = searchSpaceNode.getSourceFile();
                var possiblePositions = getPossibleSymbolReferencePositions(sourceFile, "super", searchSpaceNode.getStart(), searchSpaceNode.getEnd());
                ts.forEach(possiblePositions, function (position) {
                    cancellationToken.throwIfCancellationRequested();
                    var node = ts.getTouchingWord(sourceFile, position);
                    if (!node || node.kind !== 91) {
                        return;
                    }
                    var container = ts.getSuperContainer(node, false);
                    if (container && (128 & container.flags) === staticFlag && container.parent.symbol === searchSpaceNode.symbol) {
                        references.push(getReferenceEntryFromNode(node));
                    }
                });
                var definition = getDefinition(searchSpaceNode.symbol);
                return [{ definition: definition, references: references }];
            }
            function getReferencesForThisKeyword(thisOrSuperKeyword, sourceFiles) {
                var searchSpaceNode = ts.getThisContainer(thisOrSuperKeyword, false);
                var staticFlag = 128;
                switch (searchSpaceNode.kind) {
                    case 135:
                    case 134:
                        if (ts.isObjectLiteralMethod(searchSpaceNode)) {
                            break;
                        }
                    case 133:
                    case 132:
                    case 136:
                    case 137:
                    case 138:
                        staticFlag &= searchSpaceNode.flags;
                        searchSpaceNode = searchSpaceNode.parent;
                        break;
                    case 228:
                        if (ts.isExternalModule(searchSpaceNode)) {
                            return undefined;
                        }
                    case 201:
                    case 163:
                        break;
                    default:
                        return undefined;
                }
                var references = [];
                var possiblePositions;
                if (searchSpaceNode.kind === 228) {
                    ts.forEach(sourceFiles, function (sourceFile) {
                        possiblePositions = getPossibleSymbolReferencePositions(sourceFile, "this", sourceFile.getStart(), sourceFile.getEnd());
                        getThisReferencesInFile(sourceFile, sourceFile, possiblePositions, references);
                    });
                }
                else {
                    var sourceFile = searchSpaceNode.getSourceFile();
                    possiblePositions = getPossibleSymbolReferencePositions(sourceFile, "this", searchSpaceNode.getStart(), searchSpaceNode.getEnd());
                    getThisReferencesInFile(sourceFile, searchSpaceNode, possiblePositions, references);
                }
                return [{
                        definition: {
                            containerKind: "",
                            containerName: "",
                            fileName: node.getSourceFile().fileName,
                            kind: ScriptElementKind.variableElement,
                            name: "this",
                            textSpan: ts.createTextSpanFromBounds(node.getStart(), node.getEnd())
                        },
                        references: references
                    }];
                function getThisReferencesInFile(sourceFile, searchSpaceNode, possiblePositions, result) {
                    ts.forEach(possiblePositions, function (position) {
                        cancellationToken.throwIfCancellationRequested();
                        var node = ts.getTouchingWord(sourceFile, position);
                        if (!node || node.kind !== 93) {
                            return;
                        }
                        var container = ts.getThisContainer(node, false);
                        switch (searchSpaceNode.kind) {
                            case 163:
                            case 201:
                                if (searchSpaceNode.symbol === container.symbol) {
                                    result.push(getReferenceEntryFromNode(node));
                                }
                                break;
                            case 135:
                            case 134:
                                if (ts.isObjectLiteralMethod(searchSpaceNode) && searchSpaceNode.symbol === container.symbol) {
                                    result.push(getReferenceEntryFromNode(node));
                                }
                                break;
                            case 202:
                                if (container.parent && searchSpaceNode.symbol === container.parent.symbol && (container.flags & 128) === staticFlag) {
                                    result.push(getReferenceEntryFromNode(node));
                                }
                                break;
                            case 228:
                                if (container.kind === 228 && !ts.isExternalModule(container)) {
                                    result.push(getReferenceEntryFromNode(node));
                                }
                                break;
                        }
                    });
                }
            }
            function populateSearchSymbolSet(symbol, location) {
                var result = [symbol];
                if (isImportOrExportSpecifierImportSymbol(symbol)) {
                    result.push(typeChecker.getAliasedSymbol(symbol));
                }
                if (isNameOfPropertyAssignment(location)) {
                    ts.forEach(getPropertySymbolsFromContextualType(location), function (contextualSymbol) {
                        result.push.apply(result, typeChecker.getRootSymbols(contextualSymbol));
                    });
                    var shorthandValueSymbol = typeChecker.getShorthandAssignmentValueSymbol(location.parent);
                    if (shorthandValueSymbol) {
                        result.push(shorthandValueSymbol);
                    }
                }
                ts.forEach(typeChecker.getRootSymbols(symbol), function (rootSymbol) {
                    if (rootSymbol !== symbol) {
                        result.push(rootSymbol);
                    }
                    if (rootSymbol.parent && rootSymbol.parent.flags & (32 | 64)) {
                        getPropertySymbolsFromBaseTypes(rootSymbol.parent, rootSymbol.getName(), result);
                    }
                });
                return result;
            }
            function getPropertySymbolsFromBaseTypes(symbol, propertyName, result) {
                if (symbol && symbol.flags & (32 | 64)) {
                    ts.forEach(symbol.getDeclarations(), function (declaration) {
                        if (declaration.kind === 202) {
                            getPropertySymbolFromTypeReference(ts.getClassExtendsHeritageClauseElement(declaration));
                            ts.forEach(ts.getClassImplementsHeritageClauseElements(declaration), getPropertySymbolFromTypeReference);
                        }
                        else if (declaration.kind === 203) {
                            ts.forEach(ts.getInterfaceBaseTypeNodes(declaration), getPropertySymbolFromTypeReference);
                        }
                    });
                }
                return;
                function getPropertySymbolFromTypeReference(typeReference) {
                    if (typeReference) {
                        var type = typeChecker.getTypeAtLocation(typeReference);
                        if (type) {
                            var propertySymbol = typeChecker.getPropertyOfType(type, propertyName);
                            if (propertySymbol) {
                                result.push(propertySymbol);
                            }
                            getPropertySymbolsFromBaseTypes(type.symbol, propertyName, result);
                        }
                    }
                }
            }
            function getRelatedSymbol(searchSymbols, referenceSymbol, referenceLocation) {
                if (searchSymbols.indexOf(referenceSymbol) >= 0) {
                    return referenceSymbol;
                }
                if (isImportOrExportSpecifierImportSymbol(referenceSymbol)) {
                    var aliasedSymbol = typeChecker.getAliasedSymbol(referenceSymbol);
                    if (searchSymbols.indexOf(aliasedSymbol) >= 0) {
                        return aliasedSymbol;
                    }
                }
                if (isNameOfPropertyAssignment(referenceLocation)) {
                    return ts.forEach(getPropertySymbolsFromContextualType(referenceLocation), function (contextualSymbol) {
                        return ts.forEach(typeChecker.getRootSymbols(contextualSymbol), function (s) { return searchSymbols.indexOf(s) >= 0 ? s : undefined; });
                    });
                }
                return ts.forEach(typeChecker.getRootSymbols(referenceSymbol), function (rootSymbol) {
                    if (searchSymbols.indexOf(rootSymbol) >= 0) {
                        return rootSymbol;
                    }
                    if (rootSymbol.parent && rootSymbol.parent.flags & (32 | 64)) {
                        var result_3 = [];
                        getPropertySymbolsFromBaseTypes(rootSymbol.parent, rootSymbol.getName(), result_3);
                        return ts.forEach(result_3, function (s) { return searchSymbols.indexOf(s) >= 0 ? s : undefined; });
                    }
                    return undefined;
                });
            }
            function getPropertySymbolsFromContextualType(node) {
                if (isNameOfPropertyAssignment(node)) {
                    var objectLiteral = node.parent.parent;
                    var contextualType = typeChecker.getContextualType(objectLiteral);
                    var name_27 = node.text;
                    if (contextualType) {
                        if (contextualType.flags & 16384) {
                            var unionProperty = contextualType.getProperty(name_27);
                            if (unionProperty) {
                                return [unionProperty];
                            }
                            else {
                                var result_4 = [];
                                ts.forEach(contextualType.types, function (t) {
                                    var symbol = t.getProperty(name_27);
                                    if (symbol) {
                                        result_4.push(symbol);
                                    }
                                });
                                return result_4;
                            }
                        }
                        else {
                            var symbol_1 = contextualType.getProperty(name_27);
                            if (symbol_1) {
                                return [symbol_1];
                            }
                        }
                    }
                }
                return undefined;
            }
            function getIntersectingMeaningFromDeclarations(meaning, declarations) {
                if (declarations) {
                    var lastIterationMeaning;
                    do {
                        lastIterationMeaning = meaning;
                        for (var _i = 0; _i < declarations.length; _i++) {
                            var declaration = declarations[_i];
                            var declarationMeaning = getMeaningFromDeclaration(declaration);
                            if (declarationMeaning & meaning) {
                                meaning |= declarationMeaning;
                            }
                        }
                    } while (meaning !== lastIterationMeaning);
                }
                return meaning;
            }
        }
        function getReferenceEntryFromNode(node) {
            var start = node.getStart();
            var end = node.getEnd();
            if (node.kind === 8) {
                start += 1;
                end -= 1;
            }
            return {
                fileName: node.getSourceFile().fileName,
                textSpan: ts.createTextSpanFromBounds(start, end),
                isWriteAccess: isWriteAccess(node)
            };
        }
        function isWriteAccess(node) {
            if (node.kind === 65 && ts.isDeclarationName(node)) {
                return true;
            }
            var parent = node.parent;
            if (parent) {
                if (parent.kind === 169 || parent.kind === 168) {
                    return true;
                }
                else if (parent.kind === 170 && parent.left === node) {
                    var operator = parent.operatorToken.kind;
                    return 53 <= operator && operator <= 64;
                }
            }
            return false;
        }
        function getNavigateToItems(searchValue, maxResultCount) {
            synchronizeHostData();
            return ts.NavigateTo.getNavigateToItems(program, cancellationToken, searchValue, maxResultCount);
        }
        function containErrors(diagnostics) {
            return ts.forEach(diagnostics, function (diagnostic) { return diagnostic.category === ts.DiagnosticCategory.Error; });
        }
        function getEmitOutput(fileName) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var outputFiles = [];
            function writeFile(fileName, data, writeByteOrderMark) {
                outputFiles.push({
                    name: fileName,
                    writeByteOrderMark: writeByteOrderMark,
                    text: data
                });
            }
            var emitOutput = program.emit(sourceFile, writeFile);
            return {
                outputFiles: outputFiles,
                emitSkipped: emitOutput.emitSkipped
            };
        }
        function getMeaningFromDeclaration(node) {
            switch (node.kind) {
                case 130:
                case 199:
                case 153:
                case 133:
                case 132:
                case 225:
                case 226:
                case 227:
                case 135:
                case 134:
                case 136:
                case 137:
                case 138:
                case 201:
                case 163:
                case 164:
                case 224:
                    return 1;
                case 129:
                case 203:
                case 204:
                case 146:
                    return 2;
                case 202:
                case 205:
                    return 1 | 2;
                case 206:
                    if (node.name.kind === 8) {
                        return 4 | 1;
                    }
                    else if (ts.getModuleInstanceState(node) === 1) {
                        return 4 | 1;
                    }
                    else {
                        return 4;
                    }
                case 213:
                case 214:
                case 209:
                case 210:
                case 215:
                case 216:
                    return 1 | 2 | 4;
                case 228:
                    return 4 | 1;
            }
            return 1 | 2 | 4;
            ts.Debug.fail("Unknown declaration type");
        }
        function isTypeReference(node) {
            if (ts.isRightSideOfQualifiedNameOrPropertyAccess(node)) {
                node = node.parent;
            }
            return node.parent.kind === 142 || node.parent.kind === 177;
        }
        function isNamespaceReference(node) {
            return isQualifiedNameNamespaceReference(node) || isPropertyAccessNamespaceReference(node);
        }
        function isPropertyAccessNamespaceReference(node) {
            var root = node;
            var isLastClause = true;
            if (root.parent.kind === 156) {
                while (root.parent && root.parent.kind === 156) {
                    root = root.parent;
                }
                isLastClause = root.name === node;
            }
            if (!isLastClause && root.parent.kind === 177 && root.parent.parent.kind === 223) {
                var decl = root.parent.parent.parent;
                return (decl.kind === 202 && root.parent.parent.token === 102) ||
                    (decl.kind === 203 && root.parent.parent.token === 79);
            }
            return false;
        }
        function isQualifiedNameNamespaceReference(node) {
            var root = node;
            var isLastClause = true;
            if (root.parent.kind === 127) {
                while (root.parent && root.parent.kind === 127) {
                    root = root.parent;
                }
                isLastClause = root.right === node;
            }
            return root.parent.kind === 142 && !isLastClause;
        }
        function isInRightSideOfImport(node) {
            while (node.parent.kind === 127) {
                node = node.parent;
            }
            return ts.isInternalModuleImportEqualsDeclaration(node.parent) && node.parent.moduleReference === node;
        }
        function getMeaningFromRightHandSideOfImportEquals(node) {
            ts.Debug.assert(node.kind === 65);
            if (node.parent.kind === 127 &&
                node.parent.right === node &&
                node.parent.parent.kind === 209) {
                return 1 | 2 | 4;
            }
            return 4;
        }
        function getMeaningFromLocation(node) {
            if (node.parent.kind === 215) {
                return 1 | 2 | 4;
            }
            else if (isInRightSideOfImport(node)) {
                return getMeaningFromRightHandSideOfImportEquals(node);
            }
            else if (ts.isDeclarationName(node)) {
                return getMeaningFromDeclaration(node.parent);
            }
            else if (isTypeReference(node)) {
                return 2;
            }
            else if (isNamespaceReference(node)) {
                return 4;
            }
            else {
                return 1;
            }
        }
        function getSignatureHelpItems(fileName, position) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            return ts.SignatureHelp.getSignatureHelpItems(program, sourceFile, position, cancellationToken);
        }
        function getSourceFile(fileName) {
            return syntaxTreeCache.getCurrentSourceFile(fileName);
        }
        function getNameOrDottedNameSpan(fileName, startPos, endPos) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            var node = ts.getTouchingPropertyName(sourceFile, startPos);
            if (!node) {
                return;
            }
            switch (node.kind) {
                case 156:
                case 127:
                case 8:
                case 80:
                case 95:
                case 89:
                case 91:
                case 93:
                case 65:
                    break;
                default:
                    return;
            }
            var nodeForStartPos = node;
            while (true) {
                if (isRightSideOfPropertyAccess(nodeForStartPos) || isRightSideOfQualifiedName(nodeForStartPos)) {
                    nodeForStartPos = nodeForStartPos.parent;
                }
                else if (isNameOfModuleDeclaration(nodeForStartPos)) {
                    if (nodeForStartPos.parent.parent.kind === 206 &&
                        nodeForStartPos.parent.parent.body === nodeForStartPos.parent) {
                        nodeForStartPos = nodeForStartPos.parent.parent.name;
                    }
                    else {
                        break;
                    }
                }
                else {
                    break;
                }
            }
            return ts.createTextSpanFromBounds(nodeForStartPos.getStart(), node.getEnd());
        }
        function getBreakpointStatementAtPosition(fileName, position) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            return ts.BreakpointResolver.spanInSourceFileAtLocation(sourceFile, position);
        }
        function getNavigationBarItems(fileName) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            return ts.NavigationBar.getNavigationBarItems(sourceFile);
        }
        function getSemanticClassifications(fileName, span) {
            return convertClassifications(getEncodedSemanticClassifications(fileName, span));
        }
        function getEncodedSemanticClassifications(fileName, span) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var typeChecker = program.getTypeChecker();
            var result = [];
            processNode(sourceFile);
            return { spans: result, endOfLineState: 0 };
            function pushClassification(start, length, type) {
                result.push(start);
                result.push(length);
                result.push(type);
            }
            function classifySymbol(symbol, meaningAtPosition) {
                var flags = symbol.getFlags();
                if (flags & 32) {
                    return 11;
                }
                else if (flags & 384) {
                    return 12;
                }
                else if (flags & 524288) {
                    return 16;
                }
                else if (meaningAtPosition & 2) {
                    if (flags & 64) {
                        return 13;
                    }
                    else if (flags & 262144) {
                        return 15;
                    }
                }
                else if (flags & 1536) {
                    if (meaningAtPosition & 4 ||
                        (meaningAtPosition & 1 && hasValueSideModule(symbol))) {
                        return 14;
                    }
                }
                return undefined;
                function hasValueSideModule(symbol) {
                    return ts.forEach(symbol.declarations, function (declaration) {
                        return declaration.kind === 206 && ts.getModuleInstanceState(declaration) == 1;
                    });
                }
            }
            function processNode(node) {
                if (node && ts.textSpanIntersectsWith(span, node.getStart(), node.getWidth())) {
                    if (node.kind === 65 && node.getWidth() > 0) {
                        var symbol = typeChecker.getSymbolAtLocation(node);
                        if (symbol) {
                            var type = classifySymbol(symbol, getMeaningFromLocation(node));
                            if (type) {
                                pushClassification(node.getStart(), node.getWidth(), type);
                            }
                        }
                    }
                    ts.forEachChild(node, processNode);
                }
            }
        }
        function getClassificationTypeName(type) {
            switch (type) {
                case 1: return ClassificationTypeNames.comment;
                case 2: return ClassificationTypeNames.identifier;
                case 3: return ClassificationTypeNames.keyword;
                case 4: return ClassificationTypeNames.numericLiteral;
                case 5: return ClassificationTypeNames.operator;
                case 6: return ClassificationTypeNames.stringLiteral;
                case 8: return ClassificationTypeNames.whiteSpace;
                case 9: return ClassificationTypeNames.text;
                case 10: return ClassificationTypeNames.punctuation;
                case 11: return ClassificationTypeNames.className;
                case 12: return ClassificationTypeNames.enumName;
                case 13: return ClassificationTypeNames.interfaceName;
                case 14: return ClassificationTypeNames.moduleName;
                case 15: return ClassificationTypeNames.typeParameterName;
                case 16: return ClassificationTypeNames.typeAliasName;
                case 17: return ClassificationTypeNames.parameterName;
            }
        }
        function convertClassifications(classifications) {
            ts.Debug.assert(classifications.spans.length % 3 === 0);
            var dense = classifications.spans;
            var result = [];
            for (var i = 0, n = dense.length; i < n; i += 3) {
                result.push({
                    textSpan: ts.createTextSpan(dense[i], dense[i + 1]),
                    classificationType: getClassificationTypeName(dense[i + 2])
                });
            }
            return result;
        }
        function getSyntacticClassifications(fileName, span) {
            return convertClassifications(getEncodedSyntacticClassifications(fileName, span));
        }
        function getEncodedSyntacticClassifications(fileName, span) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            var triviaScanner = ts.createScanner(2, false, sourceFile.text);
            var mergeConflictScanner = ts.createScanner(2, false, sourceFile.text);
            var result = [];
            processElement(sourceFile);
            return { spans: result, endOfLineState: 0 };
            function pushClassification(start, length, type) {
                result.push(start);
                result.push(length);
                result.push(type);
            }
            function classifyLeadingTrivia(token) {
                var tokenStart = ts.skipTrivia(sourceFile.text, token.pos, false);
                if (tokenStart === token.pos) {
                    return;
                }
                triviaScanner.setTextPos(token.pos);
                while (true) {
                    var start = triviaScanner.getTextPos();
                    var kind = triviaScanner.scan();
                    var end = triviaScanner.getTextPos();
                    var width = end - start;
                    if (!ts.isTrivia(kind)) {
                        return;
                    }
                    if (ts.textSpanIntersectsWith(span, start, width)) {
                        if (ts.isComment(kind)) {
                            pushClassification(start, width, 1);
                            continue;
                        }
                        if (kind === 6) {
                            var text = sourceFile.text;
                            var ch = text.charCodeAt(start);
                            if (ch === 60 || ch === 62) {
                                pushClassification(start, width, 1);
                                continue;
                            }
                            ts.Debug.assert(ch === 61);
                            classifyDisabledMergeCode(text, start, end);
                        }
                    }
                }
            }
            function classifyDisabledMergeCode(text, start, end) {
                for (var i = start; i < end; i++) {
                    if (ts.isLineBreak(text.charCodeAt(i))) {
                        break;
                    }
                }
                pushClassification(start, i - start, 1);
                mergeConflictScanner.setTextPos(i);
                while (mergeConflictScanner.getTextPos() < end) {
                    classifyDisabledCodeToken();
                }
            }
            function classifyDisabledCodeToken() {
                var start = mergeConflictScanner.getTextPos();
                var tokenKind = mergeConflictScanner.scan();
                var end = mergeConflictScanner.getTextPos();
                var type = classifyTokenType(tokenKind);
                if (type) {
                    pushClassification(start, end - start, type);
                }
            }
            function classifyToken(token) {
                classifyLeadingTrivia(token);
                if (token.getWidth() > 0) {
                    var type = classifyTokenType(token.kind, token);
                    if (type) {
                        pushClassification(token.getStart(), token.getWidth(), type);
                    }
                }
            }
            function classifyTokenType(tokenKind, token) {
                if (ts.isKeyword(tokenKind)) {
                    return 3;
                }
                if (tokenKind === 24 || tokenKind === 25) {
                    if (token && ts.getTypeArgumentOrTypeParameterList(token.parent)) {
                        return 10;
                    }
                }
                if (ts.isPunctuation(tokenKind)) {
                    if (token) {
                        if (tokenKind === 53) {
                            if (token.parent.kind === 199 ||
                                token.parent.kind === 133 ||
                                token.parent.kind === 130) {
                                return 5;
                            }
                        }
                        if (token.parent.kind === 170 ||
                            token.parent.kind === 168 ||
                            token.parent.kind === 169 ||
                            token.parent.kind === 171) {
                            return 5;
                        }
                    }
                    return 10;
                }
                else if (tokenKind === 7) {
                    return 4;
                }
                else if (tokenKind === 8) {
                    return 6;
                }
                else if (tokenKind === 9) {
                    return 6;
                }
                else if (ts.isTemplateLiteralKind(tokenKind)) {
                    return 6;
                }
                else if (tokenKind === 65) {
                    if (token) {
                        switch (token.parent.kind) {
                            case 202:
                                if (token.parent.name === token) {
                                    return 11;
                                }
                                return;
                            case 129:
                                if (token.parent.name === token) {
                                    return 15;
                                }
                                return;
                            case 203:
                                if (token.parent.name === token) {
                                    return 13;
                                }
                                return;
                            case 205:
                                if (token.parent.name === token) {
                                    return 12;
                                }
                                return;
                            case 206:
                                if (token.parent.name === token) {
                                    return 14;
                                }
                                return;
                            case 130:
                                if (token.parent.name === token) {
                                    return 17;
                                }
                                return;
                        }
                    }
                    return 9;
                }
            }
            function processElement(element) {
                if (ts.textSpanIntersectsWith(span, element.getFullStart(), element.getFullWidth())) {
                    var children = element.getChildren();
                    for (var _i = 0; _i < children.length; _i++) {
                        var child = children[_i];
                        if (ts.isToken(child)) {
                            classifyToken(child);
                        }
                        else {
                            processElement(child);
                        }
                    }
                }
            }
        }
        function getOutliningSpans(fileName) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            return ts.OutliningElementsCollector.collectElements(sourceFile);
        }
        function getBraceMatchingAtPosition(fileName, position) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            var result = [];
            var token = ts.getTouchingToken(sourceFile, position);
            if (token.getStart(sourceFile) === position) {
                var matchKind = getMatchingTokenKind(token);
                if (matchKind) {
                    var parentElement = token.parent;
                    var childNodes = parentElement.getChildren(sourceFile);
                    for (var _i = 0; _i < childNodes.length; _i++) {
                        var current = childNodes[_i];
                        if (current.kind === matchKind) {
                            var range1 = ts.createTextSpan(token.getStart(sourceFile), token.getWidth(sourceFile));
                            var range2 = ts.createTextSpan(current.getStart(sourceFile), current.getWidth(sourceFile));
                            if (range1.start < range2.start) {
                                result.push(range1, range2);
                            }
                            else {
                                result.push(range2, range1);
                            }
                            break;
                        }
                    }
                }
            }
            return result;
            function getMatchingTokenKind(token) {
                switch (token.kind) {
                    case 14: return 15;
                    case 16: return 17;
                    case 18: return 19;
                    case 24: return 25;
                    case 15: return 14;
                    case 17: return 16;
                    case 19: return 18;
                    case 25: return 24;
                }
                return undefined;
            }
        }
        function getIndentationAtPosition(fileName, position, editorOptions) {
            var start = new Date().getTime();
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            log("getIndentationAtPosition: getCurrentSourceFile: " + (new Date().getTime() - start));
            start = new Date().getTime();
            var result = ts.formatting.SmartIndenter.getIndentation(position, sourceFile, editorOptions);
            log("getIndentationAtPosition: computeIndentation  : " + (new Date().getTime() - start));
            return result;
        }
        function getFormattingEditsForRange(fileName, start, end, options) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            return ts.formatting.formatSelection(start, end, sourceFile, getRuleProvider(options), options);
        }
        function getFormattingEditsForDocument(fileName, options) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            return ts.formatting.formatDocument(sourceFile, getRuleProvider(options), options);
        }
        function getFormattingEditsAfterKeystroke(fileName, position, key, options) {
            var sourceFile = syntaxTreeCache.getCurrentSourceFile(fileName);
            if (key === "}") {
                return ts.formatting.formatOnClosingCurly(position, sourceFile, getRuleProvider(options), options);
            }
            else if (key === ";") {
                return ts.formatting.formatOnSemicolon(position, sourceFile, getRuleProvider(options), options);
            }
            else if (key === "\n") {
                return ts.formatting.formatOnEnter(position, sourceFile, getRuleProvider(options), options);
            }
            return [];
        }
        function getTodoComments(fileName, descriptors) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            cancellationToken.throwIfCancellationRequested();
            var fileContents = sourceFile.text;
            var result = [];
            if (descriptors.length > 0) {
                var regExp = getTodoCommentsRegExp();
                var matchArray;
                while (matchArray = regExp.exec(fileContents)) {
                    cancellationToken.throwIfCancellationRequested();
                    var firstDescriptorCaptureIndex = 3;
                    ts.Debug.assert(matchArray.length === descriptors.length + firstDescriptorCaptureIndex);
                    var preamble = matchArray[1];
                    var matchPosition = matchArray.index + preamble.length;
                    var token = ts.getTokenAtPosition(sourceFile, matchPosition);
                    if (!isInsideComment(sourceFile, token, matchPosition)) {
                        continue;
                    }
                    var descriptor = undefined;
                    for (var i = 0, n = descriptors.length; i < n; i++) {
                        if (matchArray[i + firstDescriptorCaptureIndex]) {
                            descriptor = descriptors[i];
                        }
                    }
                    ts.Debug.assert(descriptor !== undefined);
                    if (isLetterOrDigit(fileContents.charCodeAt(matchPosition + descriptor.text.length))) {
                        continue;
                    }
                    var message = matchArray[2];
                    result.push({
                        descriptor: descriptor,
                        message: message,
                        position: matchPosition
                    });
                }
            }
            return result;
            function escapeRegExp(str) {
                return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
            }
            function getTodoCommentsRegExp() {
                // NOTE: ?:  means 'non-capture group'.  It allows us to have groups without having to
                // filter them out later in the final result array.
                var singleLineCommentStart = /(?:\/\/+\s*)/.source;
                var multiLineCommentStart = /(?:\/\*+\s*)/.source;
                var anyNumberOfSpacesAndAsterixesAtStartOfLine = /(?:^(?:\s|\*)*)/.source;
                var preamble = "(" + anyNumberOfSpacesAndAsterixesAtStartOfLine + "|" + singleLineCommentStart + "|" + multiLineCommentStart + ")";
                var literals = "(?:" + ts.map(descriptors, function (d) { return "(" + escapeRegExp(d.text) + ")"; }).join("|") + ")";
                var endOfLineOrEndOfComment = /(?:$|\*\/)/.source;
                var messageRemainder = /(?:.*?)/.source;
                var messagePortion = "(" + literals + messageRemainder + ")";
                var regExpString = preamble + messagePortion + endOfLineOrEndOfComment;
                return new RegExp(regExpString, "gim");
            }
            function isLetterOrDigit(char) {
                return (char >= 97 && char <= 122) ||
                    (char >= 65 && char <= 90) ||
                    (char >= 48 && char <= 57);
            }
        }
        function getRenameInfo(fileName, position) {
            synchronizeHostData();
            var sourceFile = getValidSourceFile(fileName);
            var typeChecker = program.getTypeChecker();
            var node = ts.getTouchingWord(sourceFile, position);
            if (node && node.kind === 65) {
                var symbol = typeChecker.getSymbolAtLocation(node);
                if (symbol) {
                    var declarations = symbol.getDeclarations();
                    if (declarations && declarations.length > 0) {
                        var defaultLibFileName = host.getDefaultLibFileName(host.getCompilationSettings());
                        if (defaultLibFileName) {
                            for (var _i = 0; _i < declarations.length; _i++) {
                                var current = declarations[_i];
                                var sourceFile_2 = current.getSourceFile();
                                if (sourceFile_2 && getCanonicalFileName(ts.normalizePath(sourceFile_2.fileName)) === getCanonicalFileName(ts.normalizePath(defaultLibFileName))) {
                                    return getRenameInfoError(ts.getLocaleSpecificMessage(ts.Diagnostics.You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library.key));
                                }
                            }
                        }
                        var kind = getSymbolKind(symbol, node);
                        if (kind) {
                            return {
                                canRename: true,
                                localizedErrorMessage: undefined,
                                displayName: symbol.name,
                                fullDisplayName: typeChecker.getFullyQualifiedName(symbol),
                                kind: kind,
                                kindModifiers: getSymbolModifiers(symbol),
                                triggerSpan: ts.createTextSpan(node.getStart(), node.getWidth())
                            };
                        }
                    }
                }
            }
            return getRenameInfoError(ts.getLocaleSpecificMessage(ts.Diagnostics.You_cannot_rename_this_element.key));
            function getRenameInfoError(localizedErrorMessage) {
                return {
                    canRename: false,
                    localizedErrorMessage: localizedErrorMessage,
                    displayName: undefined,
                    fullDisplayName: undefined,
                    kind: undefined,
                    kindModifiers: undefined,
                    triggerSpan: undefined
                };
            }
        }
        return {
            dispose: dispose,
            cleanupSemanticCache: cleanupSemanticCache,
            getSyntacticDiagnostics: getSyntacticDiagnostics,
            getSemanticDiagnostics: getSemanticDiagnostics,
            getCompilerOptionsDiagnostics: getCompilerOptionsDiagnostics,
            getSyntacticClassifications: getSyntacticClassifications,
            getSemanticClassifications: getSemanticClassifications,
            getEncodedSyntacticClassifications: getEncodedSyntacticClassifications,
            getEncodedSemanticClassifications: getEncodedSemanticClassifications,
            getCompletionsAtPosition: getCompletionsAtPosition,
            getCompletionEntryDetails: getCompletionEntryDetails,
            getSignatureHelpItems: getSignatureHelpItems,
            getQuickInfoAtPosition: getQuickInfoAtPosition,
            getDefinitionAtPosition: getDefinitionAtPosition,
            getTypeDefinitionAtPosition: getTypeDefinitionAtPosition,
            getReferencesAtPosition: getReferencesAtPosition,
            findReferences: findReferences,
            getOccurrencesAtPosition: getOccurrencesAtPosition,
            getDocumentHighlights: getDocumentHighlights,
            getNameOrDottedNameSpan: getNameOrDottedNameSpan,
            getBreakpointStatementAtPosition: getBreakpointStatementAtPosition,
            getNavigateToItems: getNavigateToItems,
            getRenameInfo: getRenameInfo,
            findRenameLocations: findRenameLocations,
            getNavigationBarItems: getNavigationBarItems,
            getOutliningSpans: getOutliningSpans,
            getTodoComments: getTodoComments,
            getBraceMatchingAtPosition: getBraceMatchingAtPosition,
            getIndentationAtPosition: getIndentationAtPosition,
            getFormattingEditsForRange: getFormattingEditsForRange,
            getFormattingEditsForDocument: getFormattingEditsForDocument,
            getFormattingEditsAfterKeystroke: getFormattingEditsAfterKeystroke,
            getEmitOutput: getEmitOutput,
            getSourceFile: getSourceFile,
            getProgram: getProgram
        };
    }
    ts.createLanguageService = createLanguageService;
    function getNameTable(sourceFile) {
        if (!sourceFile.nameTable) {
            initializeNameTable(sourceFile);
        }
        return sourceFile.nameTable;
    }
    ts.getNameTable = getNameTable;
    function initializeNameTable(sourceFile) {
        var nameTable = {};
        walk(sourceFile);
        sourceFile.nameTable = nameTable;
        function walk(node) {
            switch (node.kind) {
                case 65:
                    nameTable[node.text] = node.text;
                    break;
                case 8:
                case 7:
                    if (ts.isDeclarationName(node) ||
                        node.parent.kind === 220 ||
                        isArgumentOfElementAccessExpression(node)) {
                        nameTable[node.text] = node.text;
                    }
                    break;
                default:
                    ts.forEachChild(node, walk);
            }
        }
    }
    function isArgumentOfElementAccessExpression(node) {
        return node &&
            node.parent &&
            node.parent.kind === 157 &&
            node.parent.argumentExpression === node;
    }
    function createClassifier() {
        var scanner = ts.createScanner(2, false);
        var noRegexTable = [];
        noRegexTable[65] = true;
        noRegexTable[8] = true;
        noRegexTable[7] = true;
        noRegexTable[9] = true;
        noRegexTable[93] = true;
        noRegexTable[38] = true;
        noRegexTable[39] = true;
        noRegexTable[17] = true;
        noRegexTable[19] = true;
        noRegexTable[15] = true;
        noRegexTable[95] = true;
        noRegexTable[80] = true;
        var templateStack = [];
        function canFollow(keyword1, keyword2) {
            if (ts.isAccessibilityModifier(keyword1)) {
                if (keyword2 === 116 ||
                    keyword2 === 121 ||
                    keyword2 === 114 ||
                    keyword2 === 109) {
                    return true;
                }
                return false;
            }
            return true;
        }
        function convertClassifications(classifications, text) {
            var entries = [];
            var dense = classifications.spans;
            var lastEnd = 0;
            for (var i = 0, n = dense.length; i < n; i += 3) {
                var start = dense[i];
                var length_1 = dense[i + 1];
                var type = dense[i + 2];
                if (lastEnd >= 0) {
                    var whitespaceLength_1 = start - lastEnd;
                    if (whitespaceLength_1 > 0) {
                        entries.push({ length: whitespaceLength_1, classification: TokenClass.Whitespace });
                    }
                }
                entries.push({ length: length_1, classification: convertClassification(type) });
                lastEnd = start + length_1;
            }
            var whitespaceLength = text.length - lastEnd;
            if (whitespaceLength > 0) {
                entries.push({ length: whitespaceLength, classification: TokenClass.Whitespace });
            }
            return { entries: entries, finalLexState: classifications.endOfLineState };
        }
        function convertClassification(type) {
            switch (type) {
                case 1: return TokenClass.Comment;
                case 3: return TokenClass.Keyword;
                case 4: return TokenClass.NumberLiteral;
                case 5: return TokenClass.Operator;
                case 6: return TokenClass.StringLiteral;
                case 8: return TokenClass.Whitespace;
                case 10: return TokenClass.Punctuation;
                case 2:
                case 11:
                case 12:
                case 13:
                case 14:
                case 15:
                case 16:
                case 9:
                case 17:
                default:
                    return TokenClass.Identifier;
            }
        }
        function getClassificationsForLine(text, lexState, syntacticClassifierAbsent) {
            return convertClassifications(getEncodedLexicalClassifications(text, lexState, syntacticClassifierAbsent), text);
        }
        function getEncodedLexicalClassifications(text, lexState, syntacticClassifierAbsent) {
            var offset = 0;
            var token = 0;
            var lastNonTriviaToken = 0;
            while (templateStack.length > 0) {
                templateStack.pop();
            }
            switch (lexState) {
                case 3:
                    text = '"\\\n' + text;
                    offset = 3;
                    break;
                case 2:
                    text = "'\\\n" + text;
                    offset = 3;
                    break;
                case 1:
                    text = "/*\n" + text;
                    offset = 3;
                    break;
                case 4:
                    text = "`\n" + text;
                    offset = 2;
                    break;
                case 5:
                    text = "}\n" + text;
                    offset = 2;
                case 6:
                    templateStack.push(11);
                    break;
            }
            scanner.setText(text);
            var result = {
                endOfLineState: 0,
                spans: []
            };
            var angleBracketStack = 0;
            do {
                token = scanner.scan();
                if (!ts.isTrivia(token)) {
                    if ((token === 36 || token === 57) && !noRegexTable[lastNonTriviaToken]) {
                        if (scanner.reScanSlashToken() === 9) {
                            token = 9;
                        }
                    }
                    else if (lastNonTriviaToken === 20 && isKeyword(token)) {
                        token = 65;
                    }
                    else if (isKeyword(lastNonTriviaToken) && isKeyword(token) && !canFollow(lastNonTriviaToken, token)) {
                        token = 65;
                    }
                    else if (lastNonTriviaToken === 65 &&
                        token === 24) {
                        angleBracketStack++;
                    }
                    else if (token === 25 && angleBracketStack > 0) {
                        angleBracketStack--;
                    }
                    else if (token === 112 ||
                        token === 122 ||
                        token === 120 ||
                        token === 113 ||
                        token === 123) {
                        if (angleBracketStack > 0 && !syntacticClassifierAbsent) {
                            token = 65;
                        }
                    }
                    else if (token === 11) {
                        templateStack.push(token);
                    }
                    else if (token === 14) {
                        if (templateStack.length > 0) {
                            templateStack.push(token);
                        }
                    }
                    else if (token === 15) {
                        if (templateStack.length > 0) {
                            var lastTemplateStackToken = ts.lastOrUndefined(templateStack);
                            if (lastTemplateStackToken === 11) {
                                token = scanner.reScanTemplateToken();
                                if (token === 13) {
                                    templateStack.pop();
                                }
                                else {
                                    ts.Debug.assert(token === 12, "Should have been a template middle. Was " + token);
                                }
                            }
                            else {
                                ts.Debug.assert(lastTemplateStackToken === 14, "Should have been an open brace. Was: " + token);
                                templateStack.pop();
                            }
                        }
                    }
                    lastNonTriviaToken = token;
                }
                processToken();
            } while (token !== 1);
            return result;
            function processToken() {
                var start = scanner.getTokenPos();
                var end = scanner.getTextPos();
                addResult(start, end, classFromKind(token));
                if (end >= text.length) {
                    if (token === 8) {
                        var tokenText = scanner.getTokenText();
                        if (scanner.isUnterminated()) {
                            var lastCharIndex = tokenText.length - 1;
                            var numBackslashes = 0;
                            while (tokenText.charCodeAt(lastCharIndex - numBackslashes) === 92) {
                                numBackslashes++;
                            }
                            if (numBackslashes & 1) {
                                var quoteChar = tokenText.charCodeAt(0);
                                result.endOfLineState = quoteChar === 34
                                    ? 3
                                    : 2;
                            }
                        }
                    }
                    else if (token === 3) {
                        if (scanner.isUnterminated()) {
                            result.endOfLineState = 1;
                        }
                    }
                    else if (ts.isTemplateLiteralKind(token)) {
                        if (scanner.isUnterminated()) {
                            if (token === 13) {
                                result.endOfLineState = 5;
                            }
                            else if (token === 10) {
                                result.endOfLineState = 4;
                            }
                            else {
                                ts.Debug.fail("Only 'NoSubstitutionTemplateLiteral's and 'TemplateTail's can be unterminated; got SyntaxKind #" + token);
                            }
                        }
                    }
                    else if (templateStack.length > 0 && ts.lastOrUndefined(templateStack) === 11) {
                        result.endOfLineState = 6;
                    }
                }
            }
            function addResult(start, end, classification) {
                if (classification === 8) {
                    return;
                }
                if (start === 0 && offset > 0) {
                    start += offset;
                }
                start -= offset;
                end -= offset;
                var length = end - start;
                if (length > 0) {
                    result.spans.push(start);
                    result.spans.push(length);
                    result.spans.push(classification);
                }
            }
        }
        function isBinaryExpressionOperatorToken(token) {
            switch (token) {
                case 35:
                case 36:
                case 37:
                case 33:
                case 34:
                case 40:
                case 41:
                case 42:
                case 24:
                case 25:
                case 26:
                case 27:
                case 87:
                case 86:
                case 28:
                case 29:
                case 30:
                case 31:
                case 43:
                case 45:
                case 44:
                case 48:
                case 49:
                case 63:
                case 62:
                case 64:
                case 59:
                case 60:
                case 61:
                case 54:
                case 55:
                case 56:
                case 57:
                case 58:
                case 53:
                case 23:
                    return true;
                default:
                    return false;
            }
        }
        function isPrefixUnaryExpressionOperatorToken(token) {
            switch (token) {
                case 33:
                case 34:
                case 47:
                case 46:
                case 38:
                case 39:
                    return true;
                default:
                    return false;
            }
        }
        function isKeyword(token) {
            return token >= 66 && token <= 126;
        }
        function classFromKind(token) {
            if (isKeyword(token)) {
                return 3;
            }
            else if (isBinaryExpressionOperatorToken(token) || isPrefixUnaryExpressionOperatorToken(token)) {
                return 5;
            }
            else if (token >= 14 && token <= 64) {
                return 10;
            }
            switch (token) {
                case 7:
                    return 4;
                case 8:
                    return 6;
                case 9:
                    return 7;
                case 6:
                case 3:
                case 2:
                    return 1;
                case 5:
                case 4:
                    return 8;
                case 65:
                default:
                    if (ts.isTemplateLiteralKind(token)) {
                        return 6;
                    }
                    return 2;
            }
        }
        return {
            getClassificationsForLine: getClassificationsForLine,
            getEncodedLexicalClassifications: getEncodedLexicalClassifications
        };
    }
    ts.createClassifier = createClassifier;
    function getDefaultLibFilePath(options) {
        if (typeof __dirname !== "undefined") {
            return __dirname + ts.directorySeparator + ts.getDefaultLibFileName(options);
        }
        throw new Error("getDefaultLibFilePath is only supported when consumed as a node module. ");
    }
    ts.getDefaultLibFilePath = getDefaultLibFilePath;
    function initializeServices() {
        ts.objectAllocator = {
            getNodeConstructor: function (kind) {
                function Node() {
                }
                var proto = kind === 228 ? new SourceFileObject() : new NodeObject();
                proto.kind = kind;
                proto.pos = 0;
                proto.end = 0;
                proto.flags = 0;
                proto.parent = undefined;
                Node.prototype = proto;
                return Node;
            },
            getSymbolConstructor: function () { return SymbolObject; },
            getTypeConstructor: function () { return TypeObject; },
            getSignatureConstructor: function () { return SignatureObject; }
        };
    }
    initializeServices();
})(ts || (ts = {}));
/// <reference path="..\compiler\commandLineParser.ts" />
/// <reference path="..\services\services.ts" />
/// <reference path="node.d.ts" />
/// <reference path="protocol.d.ts" />
/// <reference path="editorServices.ts" />
var ts;
(function (ts) {
    var server;
    (function (server) {
        var spaceCache = [];
        function generateSpaces(n) {
            if (!spaceCache[n]) {
                var strBuilder = "";
                for (var i = 0; i < n; i++) {
                    strBuilder += " ";
                }
                spaceCache[n] = strBuilder;
            }
            return spaceCache[n];
        }
        server.generateSpaces = generateSpaces;
        function compareNumber(a, b) {
            if (a < b) {
                return -1;
            }
            else if (a == b) {
                return 0;
            }
            else
                return 1;
        }
        function compareFileStart(a, b) {
            if (a.file < b.file) {
                return -1;
            }
            else if (a.file == b.file) {
                var n = compareNumber(a.start.line, b.start.line);
                if (n == 0) {
                    return compareNumber(a.start.offset, b.start.offset);
                }
                else
                    return n;
            }
            else {
                return 1;
            }
        }
        function formatDiag(fileName, project, diag) {
            return {
                start: project.compilerService.host.positionToLineOffset(fileName, diag.start),
                end: project.compilerService.host.positionToLineOffset(fileName, diag.start + diag.length),
                text: ts.flattenDiagnosticMessageText(diag.messageText, "\n")
            };
        }
        function allEditsBeforePos(edits, pos) {
            for (var i = 0, len = edits.length; i < len; i++) {
                if (ts.textSpanEnd(edits[i].span) >= pos) {
                    return false;
                }
            }
            return true;
        }
        var CommandNames;
        (function (CommandNames) {
            CommandNames.Brace = "brace";
            CommandNames.Change = "change";
            CommandNames.Close = "close";
            CommandNames.Completions = "completions";
            CommandNames.CompletionDetails = "completionEntryDetails";
            CommandNames.Configure = "configure";
            CommandNames.Definition = "definition";
            CommandNames.Exit = "exit";
            CommandNames.Format = "format";
            CommandNames.Formatonkey = "formatonkey";
            CommandNames.Geterr = "geterr";
            CommandNames.NavBar = "navbar";
            CommandNames.Navto = "navto";
            CommandNames.Occurrences = "occurrences";
            CommandNames.Open = "open";
            CommandNames.Quickinfo = "quickinfo";
            CommandNames.References = "references";
            CommandNames.Reload = "reload";
            CommandNames.Rename = "rename";
            CommandNames.Saveto = "saveto";
            CommandNames.SignatureHelp = "signatureHelp";
            CommandNames.TypeDefinition = "typeDefinition";
            CommandNames.Unknown = "unknown";
        })(CommandNames = server.CommandNames || (server.CommandNames = {}));
        var Errors;
        (function (Errors) {
            Errors.NoProject = new Error("No Project.");
        })(Errors || (Errors = {}));
        var Session = (function () {
            function Session(host, logger) {
                var _this = this;
                this.host = host;
                this.logger = logger;
                this.pendingOperation = false;
                this.fileHash = {};
                this.nextFileId = 1;
                this.changeSeq = 0;
                this.projectService =
                    new server.ProjectService(host, logger, function (eventName, project, fileName) {
                        _this.handleEvent(eventName, project, fileName);
                    });
            }
            Session.prototype.handleEvent = function (eventName, project, fileName) {
                var _this = this;
                if (eventName == "context") {
                    this.projectService.log("got context event, updating diagnostics for" + fileName, "Info");
                    this.updateErrorCheck([{ fileName: fileName, project: project }], this.changeSeq, function (n) { return n == _this.changeSeq; }, 100);
                }
            };
            Session.prototype.logError = function (err, cmd) {
                var typedErr = err;
                var msg = "Exception on executing command " + cmd;
                if (typedErr.message) {
                    msg += ":\n" + typedErr.message;
                    if (typedErr.stack) {
                        msg += "\n" + typedErr.stack;
                    }
                }
                this.projectService.log(msg);
            };
            Session.prototype.sendLineToClient = function (line) {
                this.host.write(line + this.host.newLine);
            };
            Session.prototype.send = function (msg) {
                var json = JSON.stringify(msg);
                if (this.logger.isVerbose()) {
                    this.logger.info(msg.type + ": " + json);
                }
                this.sendLineToClient('Content-Length: ' + (1 + Buffer.byteLength(json, 'utf8')) +
                    '\r\n\r\n' + json);
            };
            Session.prototype.event = function (info, eventName) {
                var ev = {
                    seq: 0,
                    type: "event",
                    event: eventName,
                    body: info
                };
                this.send(ev);
            };
            Session.prototype.response = function (info, cmdName, reqSeq, errorMsg) {
                if (reqSeq === void 0) { reqSeq = 0; }
                var res = {
                    seq: 0,
                    type: "response",
                    command: cmdName,
                    request_seq: reqSeq,
                    success: !errorMsg
                };
                if (!errorMsg) {
                    res.body = info;
                }
                else {
                    res.message = errorMsg;
                }
                this.send(res);
            };
            Session.prototype.output = function (body, commandName, requestSequence, errorMessage) {
                if (requestSequence === void 0) { requestSequence = 0; }
                this.response(body, commandName, requestSequence, errorMessage);
            };
            Session.prototype.semanticCheck = function (file, project) {
                try {
                    var diags = project.compilerService.languageService.getSemanticDiagnostics(file);
                    if (diags) {
                        var bakedDiags = diags.map(function (diag) { return formatDiag(file, project, diag); });
                        this.event({ file: file, diagnostics: bakedDiags }, "semanticDiag");
                    }
                }
                catch (err) {
                    this.logError(err, "semantic check");
                }
            };
            Session.prototype.syntacticCheck = function (file, project) {
                try {
                    var diags = project.compilerService.languageService.getSyntacticDiagnostics(file);
                    if (diags) {
                        var bakedDiags = diags.map(function (diag) { return formatDiag(file, project, diag); });
                        this.event({ file: file, diagnostics: bakedDiags }, "syntaxDiag");
                    }
                }
                catch (err) {
                    this.logError(err, "syntactic check");
                }
            };
            Session.prototype.errorCheck = function (file, project) {
                this.syntacticCheck(file, project);
                this.semanticCheck(file, project);
            };
            Session.prototype.updateProjectStructure = function (seq, matchSeq, ms) {
                var _this = this;
                if (ms === void 0) { ms = 1500; }
                setTimeout(function () {
                    if (matchSeq(seq)) {
                        _this.projectService.updateProjectStructure();
                    }
                }, ms);
            };
            Session.prototype.updateErrorCheck = function (checkList, seq, matchSeq, ms, followMs) {
                var _this = this;
                if (ms === void 0) { ms = 1500; }
                if (followMs === void 0) { followMs = 200; }
                if (followMs > ms) {
                    followMs = ms;
                }
                if (this.errorTimer) {
                    clearTimeout(this.errorTimer);
                }
                if (this.immediateId) {
                    clearImmediate(this.immediateId);
                    this.immediateId = undefined;
                }
                var index = 0;
                var checkOne = function () {
                    if (matchSeq(seq)) {
                        var checkSpec = checkList[index++];
                        if (checkSpec.project.getSourceFileFromName(checkSpec.fileName, true)) {
                            _this.syntacticCheck(checkSpec.fileName, checkSpec.project);
                            _this.immediateId = setImmediate(function () {
                                _this.semanticCheck(checkSpec.fileName, checkSpec.project);
                                _this.immediateId = undefined;
                                if (checkList.length > index) {
                                    _this.errorTimer = setTimeout(checkOne, followMs);
                                }
                                else {
                                    _this.errorTimer = undefined;
                                }
                            });
                        }
                    }
                };
                if ((checkList.length > index) && (matchSeq(seq))) {
                    this.errorTimer = setTimeout(checkOne, ms);
                }
            };
            Session.prototype.getDefinition = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var definitions = compilerService.languageService.getDefinitionAtPosition(file, position);
                if (!definitions) {
                    return undefined;
                }
                return definitions.map(function (def) { return ({
                    file: def.fileName,
                    start: compilerService.host.positionToLineOffset(def.fileName, def.textSpan.start),
                    end: compilerService.host.positionToLineOffset(def.fileName, ts.textSpanEnd(def.textSpan))
                }); });
            };
            Session.prototype.getTypeDefinition = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var definitions = compilerService.languageService.getTypeDefinitionAtPosition(file, position);
                if (!definitions) {
                    return undefined;
                }
                return definitions.map(function (def) { return ({
                    file: def.fileName,
                    start: compilerService.host.positionToLineOffset(def.fileName, def.textSpan.start),
                    end: compilerService.host.positionToLineOffset(def.fileName, ts.textSpanEnd(def.textSpan))
                }); });
            };
            Session.prototype.getOccurrences = function (line, offset, fileName) {
                fileName = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(fileName);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(fileName, line, offset);
                var occurrences = compilerService.languageService.getOccurrencesAtPosition(fileName, position);
                if (!occurrences) {
                    return undefined;
                }
                return occurrences.map(function (occurrence) {
                    var fileName = occurrence.fileName, isWriteAccess = occurrence.isWriteAccess, textSpan = occurrence.textSpan;
                    var start = compilerService.host.positionToLineOffset(fileName, textSpan.start);
                    var end = compilerService.host.positionToLineOffset(fileName, ts.textSpanEnd(textSpan));
                    return {
                        start: start,
                        end: end,
                        file: fileName,
                        isWriteAccess: isWriteAccess
                    };
                });
            };
            Session.prototype.getRenameLocations = function (line, offset, fileName, findInComments, findInStrings) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var renameInfo = compilerService.languageService.getRenameInfo(file, position);
                if (!renameInfo) {
                    return undefined;
                }
                if (!renameInfo.canRename) {
                    return {
                        info: renameInfo,
                        locs: []
                    };
                }
                var renameLocations = compilerService.languageService.findRenameLocations(file, position, findInStrings, findInComments);
                if (!renameLocations) {
                    return undefined;
                }
                var bakedRenameLocs = renameLocations.map(function (location) { return ({
                    file: location.fileName,
                    start: compilerService.host.positionToLineOffset(location.fileName, location.textSpan.start),
                    end: compilerService.host.positionToLineOffset(location.fileName, ts.textSpanEnd(location.textSpan))
                }); }).sort(function (a, b) {
                    if (a.file < b.file) {
                        return -1;
                    }
                    else if (a.file > b.file) {
                        return 1;
                    }
                    else {
                        if (a.start.line < b.start.line) {
                            return 1;
                        }
                        else if (a.start.line > b.start.line) {
                            return -1;
                        }
                        else {
                            return b.start.offset - a.start.offset;
                        }
                    }
                }).reduce(function (accum, cur) {
                    var curFileAccum;
                    if (accum.length > 0) {
                        curFileAccum = accum[accum.length - 1];
                        if (curFileAccum.file != cur.file) {
                            curFileAccum = undefined;
                        }
                    }
                    if (!curFileAccum) {
                        curFileAccum = { file: cur.file, locs: [] };
                        accum.push(curFileAccum);
                    }
                    curFileAccum.locs.push({ start: cur.start, end: cur.end });
                    return accum;
                }, []);
                return { info: renameInfo, locs: bakedRenameLocs };
            };
            Session.prototype.getReferences = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var references = compilerService.languageService.getReferencesAtPosition(file, position);
                if (!references) {
                    return undefined;
                }
                var nameInfo = compilerService.languageService.getQuickInfoAtPosition(file, position);
                if (!nameInfo) {
                    return undefined;
                }
                var displayString = ts.displayPartsToString(nameInfo.displayParts);
                var nameSpan = nameInfo.textSpan;
                var nameColStart = compilerService.host.positionToLineOffset(file, nameSpan.start).offset;
                var nameText = compilerService.host.getScriptSnapshot(file).getText(nameSpan.start, ts.textSpanEnd(nameSpan));
                var bakedRefs = references.map(function (ref) {
                    var start = compilerService.host.positionToLineOffset(ref.fileName, ref.textSpan.start);
                    var refLineSpan = compilerService.host.lineToTextSpan(ref.fileName, start.line - 1);
                    var snap = compilerService.host.getScriptSnapshot(ref.fileName);
                    var lineText = snap.getText(refLineSpan.start, ts.textSpanEnd(refLineSpan)).replace(/\r|\n/g, "");
                    return {
                        file: ref.fileName,
                        start: start,
                        lineText: lineText,
                        end: compilerService.host.positionToLineOffset(ref.fileName, ts.textSpanEnd(ref.textSpan)),
                        isWriteAccess: ref.isWriteAccess
                    };
                }).sort(compareFileStart);
                return {
                    refs: bakedRefs,
                    symbolName: nameText,
                    symbolStartOffset: nameColStart,
                    symbolDisplayString: displayString
                };
            };
            Session.prototype.openClientFile = function (fileName) {
                var file = ts.normalizePath(fileName);
                this.projectService.openClientFile(file);
            };
            Session.prototype.getQuickInfo = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var quickInfo = compilerService.languageService.getQuickInfoAtPosition(file, position);
                if (!quickInfo) {
                    return undefined;
                }
                var displayString = ts.displayPartsToString(quickInfo.displayParts);
                var docString = ts.displayPartsToString(quickInfo.documentation);
                return {
                    kind: quickInfo.kind,
                    kindModifiers: quickInfo.kindModifiers,
                    start: compilerService.host.positionToLineOffset(file, quickInfo.textSpan.start),
                    end: compilerService.host.positionToLineOffset(file, ts.textSpanEnd(quickInfo.textSpan)),
                    displayString: displayString,
                    documentation: docString
                };
            };
            Session.prototype.getFormattingEditsForRange = function (line, offset, endLine, endOffset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var startPosition = compilerService.host.lineOffsetToPosition(file, line, offset);
                var endPosition = compilerService.host.lineOffsetToPosition(file, endLine, endOffset);
                var edits = compilerService.languageService.getFormattingEditsForRange(file, startPosition, endPosition, this.projectService.getFormatCodeOptions(file));
                if (!edits) {
                    return undefined;
                }
                return edits.map(function (edit) {
                    return {
                        start: compilerService.host.positionToLineOffset(file, edit.span.start),
                        end: compilerService.host.positionToLineOffset(file, ts.textSpanEnd(edit.span)),
                        newText: edit.newText ? edit.newText : ""
                    };
                });
            };
            Session.prototype.getFormattingEditsAfterKeystroke = function (line, offset, key, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var formatOptions = this.projectService.getFormatCodeOptions(file);
                var edits = compilerService.languageService.getFormattingEditsAfterKeystroke(file, position, key, formatOptions);
                if ((key == "\n") && ((!edits) || (edits.length == 0) || allEditsBeforePos(edits, position))) {
                    var scriptInfo = compilerService.host.getScriptInfo(file);
                    if (scriptInfo) {
                        var lineInfo = scriptInfo.getLineInfo(line);
                        if (lineInfo && (lineInfo.leaf) && (lineInfo.leaf.text)) {
                            var lineText = lineInfo.leaf.text;
                            if (lineText.search("\\S") < 0) {
                                var editorOptions = {
                                    IndentSize: formatOptions.IndentSize,
                                    TabSize: formatOptions.TabSize,
                                    NewLineCharacter: "\n",
                                    ConvertTabsToSpaces: formatOptions.ConvertTabsToSpaces
                                };
                                var indentPosition = compilerService.languageService.getIndentationAtPosition(file, position, editorOptions);
                                for (var i = 0, len = lineText.length; i < len; i++) {
                                    if (lineText.charAt(i) == " ") {
                                        indentPosition--;
                                    }
                                    else if (lineText.charAt(i) == "\t") {
                                        indentPosition -= editorOptions.IndentSize;
                                    }
                                    else {
                                        break;
                                    }
                                }
                                if (indentPosition > 0) {
                                    var spaces = generateSpaces(indentPosition);
                                    edits.push({ span: ts.createTextSpanFromBounds(position, position), newText: spaces });
                                }
                                else if (indentPosition < 0) {
                                    edits.push({
                                        span: ts.createTextSpanFromBounds(position, position - indentPosition),
                                        newText: ""
                                    });
                                }
                            }
                        }
                    }
                }
                if (!edits) {
                    return undefined;
                }
                return edits.map(function (edit) {
                    return {
                        start: compilerService.host.positionToLineOffset(file, edit.span.start),
                        end: compilerService.host.positionToLineOffset(file, ts.textSpanEnd(edit.span)),
                        newText: edit.newText ? edit.newText : ""
                    };
                });
            };
            Session.prototype.getCompletions = function (line, offset, prefix, fileName) {
                if (!prefix) {
                    prefix = "";
                }
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var completions = compilerService.languageService.getCompletionsAtPosition(file, position);
                if (!completions) {
                    return undefined;
                }
                return completions.entries.reduce(function (result, entry) {
                    if (completions.isMemberCompletion || (entry.name.toLowerCase().indexOf(prefix.toLowerCase()) == 0)) {
                        result.push(entry);
                    }
                    return result;
                }, []).sort(function (a, b) { return a.name.localeCompare(b.name); });
            };
            Session.prototype.getCompletionEntryDetails = function (line, offset, entryNames, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                return entryNames.reduce(function (accum, entryName) {
                    var details = compilerService.languageService.getCompletionEntryDetails(file, position, entryName);
                    if (details) {
                        accum.push(details);
                    }
                    return accum;
                }, []);
            };
            Session.prototype.getSignatureHelpItems = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var helpItems = compilerService.languageService.getSignatureHelpItems(file, position);
                if (!helpItems) {
                    return undefined;
                }
                var span = helpItems.applicableSpan;
                var result = {
                    items: helpItems.items,
                    applicableSpan: {
                        start: compilerService.host.positionToLineOffset(file, span.start),
                        end: compilerService.host.positionToLineOffset(file, span.start + span.length)
                    },
                    selectedItemIndex: helpItems.selectedItemIndex,
                    argumentIndex: helpItems.argumentIndex,
                    argumentCount: helpItems.argumentCount
                };
                return result;
            };
            Session.prototype.getDiagnostics = function (delay, fileNames) {
                var _this = this;
                var checkList = fileNames.reduce(function (accum, fileName) {
                    fileName = ts.normalizePath(fileName);
                    var project = _this.projectService.getProjectForFile(fileName);
                    if (project) {
                        accum.push({ fileName: fileName, project: project });
                    }
                    return accum;
                }, []);
                if (checkList.length > 0) {
                    this.updateErrorCheck(checkList, this.changeSeq, function (n) { return n == _this.changeSeq; }, delay);
                }
            };
            Session.prototype.change = function (line, offset, endLine, endOffset, insertString, fileName) {
                var _this = this;
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (project) {
                    var compilerService = project.compilerService;
                    var start = compilerService.host.lineOffsetToPosition(file, line, offset);
                    var end = compilerService.host.lineOffsetToPosition(file, endLine, endOffset);
                    if (start >= 0) {
                        compilerService.host.editScript(file, start, end, insertString);
                        this.changeSeq++;
                    }
                    this.updateProjectStructure(this.changeSeq, function (n) { return n == _this.changeSeq; });
                }
            };
            Session.prototype.reload = function (fileName, tempFileName, reqSeq) {
                var _this = this;
                if (reqSeq === void 0) { reqSeq = 0; }
                var file = ts.normalizePath(fileName);
                var tmpfile = ts.normalizePath(tempFileName);
                var project = this.projectService.getProjectForFile(file);
                if (project) {
                    this.changeSeq++;
                    project.compilerService.host.reloadScript(file, tmpfile, function () {
                        _this.output(undefined, CommandNames.Reload, reqSeq);
                    });
                }
            };
            Session.prototype.saveToTmp = function (fileName, tempFileName) {
                var file = ts.normalizePath(fileName);
                var tmpfile = ts.normalizePath(tempFileName);
                var project = this.projectService.getProjectForFile(file);
                if (project) {
                    project.compilerService.host.saveTo(file, tmpfile);
                }
            };
            Session.prototype.closeClientFile = function (fileName) {
                var file = ts.normalizePath(fileName);
                this.projectService.closeClientFile(file);
            };
            Session.prototype.decorateNavigationBarItem = function (project, fileName, items) {
                var _this = this;
                if (!items) {
                    return undefined;
                }
                var compilerService = project.compilerService;
                return items.map(function (item) { return ({
                    text: item.text,
                    kind: item.kind,
                    kindModifiers: item.kindModifiers,
                    spans: item.spans.map(function (span) { return ({
                        start: compilerService.host.positionToLineOffset(fileName, span.start),
                        end: compilerService.host.positionToLineOffset(fileName, ts.textSpanEnd(span))
                    }); }),
                    childItems: _this.decorateNavigationBarItem(project, fileName, item.childItems)
                }); });
            };
            Session.prototype.getNavigationBarItems = function (fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var items = compilerService.languageService.getNavigationBarItems(file);
                if (!items) {
                    return undefined;
                }
                return this.decorateNavigationBarItem(project, fileName, items);
            };
            Session.prototype.getNavigateToItems = function (searchValue, fileName, maxResultCount) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var navItems = compilerService.languageService.getNavigateToItems(searchValue, maxResultCount);
                if (!navItems) {
                    return undefined;
                }
                return navItems.map(function (navItem) {
                    var start = compilerService.host.positionToLineOffset(navItem.fileName, navItem.textSpan.start);
                    var end = compilerService.host.positionToLineOffset(navItem.fileName, ts.textSpanEnd(navItem.textSpan));
                    var bakedItem = {
                        name: navItem.name,
                        kind: navItem.kind,
                        file: navItem.fileName,
                        start: start,
                        end: end
                    };
                    if (navItem.kindModifiers && (navItem.kindModifiers != "")) {
                        bakedItem.kindModifiers = navItem.kindModifiers;
                    }
                    if (navItem.matchKind != 'none') {
                        bakedItem.matchKind = navItem.matchKind;
                    }
                    if (navItem.containerName && (navItem.containerName.length > 0)) {
                        bakedItem.containerName = navItem.containerName;
                    }
                    if (navItem.containerKind && (navItem.containerKind.length > 0)) {
                        bakedItem.containerKind = navItem.containerKind;
                    }
                    return bakedItem;
                });
            };
            Session.prototype.getBraceMatching = function (line, offset, fileName) {
                var file = ts.normalizePath(fileName);
                var project = this.projectService.getProjectForFile(file);
                if (!project) {
                    throw Errors.NoProject;
                }
                var compilerService = project.compilerService;
                var position = compilerService.host.lineOffsetToPosition(file, line, offset);
                var spans = compilerService.languageService.getBraceMatchingAtPosition(file, position);
                if (!spans) {
                    return undefined;
                }
                return spans.map(function (span) { return ({
                    start: compilerService.host.positionToLineOffset(file, span.start),
                    end: compilerService.host.positionToLineOffset(file, span.start + span.length)
                }); });
            };
            Session.prototype.exit = function () {
            };
            Session.prototype.onMessage = function (message) {
                if (this.logger.isVerbose()) {
                    this.logger.info("request: " + message);
                    var start = process.hrtime();
                }
                try {
                    var request = JSON.parse(message);
                    var response;
                    var errorMessage;
                    var responseRequired = true;
                    switch (request.command) {
                        case CommandNames.Exit: {
                            this.exit();
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Definition: {
                            var defArgs = request.arguments;
                            response = this.getDefinition(defArgs.line, defArgs.offset, defArgs.file);
                            break;
                        }
                        case CommandNames.TypeDefinition: {
                            var defArgs = request.arguments;
                            response = this.getTypeDefinition(defArgs.line, defArgs.offset, defArgs.file);
                            break;
                        }
                        case CommandNames.References: {
                            var refArgs = request.arguments;
                            response = this.getReferences(refArgs.line, refArgs.offset, refArgs.file);
                            break;
                        }
                        case CommandNames.Rename: {
                            var renameArgs = request.arguments;
                            response = this.getRenameLocations(renameArgs.line, renameArgs.offset, renameArgs.file, renameArgs.findInComments, renameArgs.findInStrings);
                            break;
                        }
                        case CommandNames.Open: {
                            var openArgs = request.arguments;
                            this.openClientFile(openArgs.file);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Quickinfo: {
                            var quickinfoArgs = request.arguments;
                            response = this.getQuickInfo(quickinfoArgs.line, quickinfoArgs.offset, quickinfoArgs.file);
                            break;
                        }
                        case CommandNames.Format: {
                            var formatArgs = request.arguments;
                            response = this.getFormattingEditsForRange(formatArgs.line, formatArgs.offset, formatArgs.endLine, formatArgs.endOffset, formatArgs.file);
                            break;
                        }
                        case CommandNames.Formatonkey: {
                            var formatOnKeyArgs = request.arguments;
                            response = this.getFormattingEditsAfterKeystroke(formatOnKeyArgs.line, formatOnKeyArgs.offset, formatOnKeyArgs.key, formatOnKeyArgs.file);
                            break;
                        }
                        case CommandNames.Completions: {
                            var completionsArgs = request.arguments;
                            response = this.getCompletions(completionsArgs.line, completionsArgs.offset, completionsArgs.prefix, completionsArgs.file);
                            break;
                        }
                        case CommandNames.CompletionDetails: {
                            var completionDetailsArgs = request.arguments;
                            response =
                                this.getCompletionEntryDetails(completionDetailsArgs.line, completionDetailsArgs.offset, completionDetailsArgs.entryNames, completionDetailsArgs.file);
                            break;
                        }
                        case CommandNames.SignatureHelp: {
                            var signatureHelpArgs = request.arguments;
                            response = this.getSignatureHelpItems(signatureHelpArgs.line, signatureHelpArgs.offset, signatureHelpArgs.file);
                            break;
                        }
                        case CommandNames.Geterr: {
                            var geterrArgs = request.arguments;
                            response = this.getDiagnostics(geterrArgs.delay, geterrArgs.files);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Change: {
                            var changeArgs = request.arguments;
                            this.change(changeArgs.line, changeArgs.offset, changeArgs.endLine, changeArgs.endOffset, changeArgs.insertString, changeArgs.file);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Configure: {
                            var configureArgs = request.arguments;
                            this.projectService.setHostConfiguration(configureArgs);
                            this.output(undefined, CommandNames.Configure, request.seq);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Reload: {
                            var reloadArgs = request.arguments;
                            this.reload(reloadArgs.file, reloadArgs.tmpfile, request.seq);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Saveto: {
                            var savetoArgs = request.arguments;
                            this.saveToTmp(savetoArgs.file, savetoArgs.tmpfile);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Close: {
                            var closeArgs = request.arguments;
                            this.closeClientFile(closeArgs.file);
                            responseRequired = false;
                            break;
                        }
                        case CommandNames.Navto: {
                            var navtoArgs = request.arguments;
                            response = this.getNavigateToItems(navtoArgs.searchValue, navtoArgs.file, navtoArgs.maxResultCount);
                            break;
                        }
                        case CommandNames.Brace: {
                            var braceArguments = request.arguments;
                            response = this.getBraceMatching(braceArguments.line, braceArguments.offset, braceArguments.file);
                            break;
                        }
                        case CommandNames.NavBar: {
                            var navBarArgs = request.arguments;
                            response = this.getNavigationBarItems(navBarArgs.file);
                            break;
                        }
                        case CommandNames.Occurrences: {
                            var _a = request.arguments, line = _a.line, offset = _a.offset, fileName = _a.file;
                            response = this.getOccurrences(line, offset, fileName);
                            break;
                        }
                        default: {
                            this.projectService.log("Unrecognized JSON command: " + message);
                            this.output(undefined, CommandNames.Unknown, request.seq, "Unrecognized JSON command: " + request.command);
                            break;
                        }
                    }
                    if (this.logger.isVerbose()) {
                        var elapsed = process.hrtime(start);
                        var seconds = elapsed[0];
                        var nanoseconds = elapsed[1];
                        var elapsedMs = ((1e9 * seconds) + nanoseconds) / 1000000.0;
                        var leader = "Elapsed time (in milliseconds)";
                        if (!responseRequired) {
                            leader = "Async elapsed time (in milliseconds)";
                        }
                        this.logger.msg(leader + ": " + elapsedMs.toFixed(4).toString(), "Perf");
                    }
                    if (response) {
                        this.output(response, request.command, request.seq);
                    }
                    else if (responseRequired) {
                        this.output(undefined, request.command, request.seq, "No content available.");
                    }
                }
                catch (err) {
                    if (err instanceof ts.OperationCanceledException) {
                    }
                    this.logError(err, message);
                    this.output(undefined, request ? request.command : CommandNames.Unknown, request ? request.seq : 0, "Error processing request. " + err.message);
                }
            };
            return Session;
        })();
        server.Session = Session;
    })(server = ts.server || (ts.server = {}));
})(ts || (ts = {}));
/// <reference path="..\compiler\commandLineParser.ts" />
/// <reference path="..\services\services.ts" />
/// <reference path="protocol.d.ts" />
/// <reference path="session.ts" />
/// <reference path="node.d.ts" />
var ts;
(function (ts) {
    var server;
    (function (server) {
        var lineCollectionCapacity = 4;
        function mergeFormatOptions(formatCodeOptions, formatOptions) {
            var hasOwnProperty = Object.prototype.hasOwnProperty;
            Object.keys(formatOptions).forEach(function (key) {
                var codeKey = key.charAt(0).toUpperCase() + key.substring(1);
                if (hasOwnProperty.call(formatCodeOptions, codeKey)) {
                    formatCodeOptions[codeKey] = formatOptions[key];
                }
            });
        }
        var ScriptInfo = (function () {
            function ScriptInfo(host, fileName, content, isOpen) {
                if (isOpen === void 0) { isOpen = false; }
                this.host = host;
                this.fileName = fileName;
                this.content = content;
                this.isOpen = isOpen;
                this.children = [];
                this.formatCodeOptions = ts.clone(CompilerService.defaultFormatCodeOptions);
                this.svc = ScriptVersionCache.fromString(content);
            }
            ScriptInfo.prototype.setFormatOptions = function (formatOptions) {
                if (formatOptions) {
                    mergeFormatOptions(this.formatCodeOptions, formatOptions);
                }
            };
            ScriptInfo.prototype.close = function () {
                this.isOpen = false;
            };
            ScriptInfo.prototype.addChild = function (childInfo) {
                this.children.push(childInfo);
            };
            ScriptInfo.prototype.snap = function () {
                return this.svc.getSnapshot();
            };
            ScriptInfo.prototype.getText = function () {
                var snap = this.snap();
                return snap.getText(0, snap.getLength());
            };
            ScriptInfo.prototype.getLineInfo = function (line) {
                var snap = this.snap();
                return snap.index.lineNumberToInfo(line);
            };
            ScriptInfo.prototype.editContent = function (start, end, newText) {
                this.svc.edit(start, end - start, newText);
            };
            ScriptInfo.prototype.getTextChangeRangeBetweenVersions = function (startVersion, endVersion) {
                return this.svc.getTextChangesBetweenVersions(startVersion, endVersion);
            };
            ScriptInfo.prototype.getChangeRange = function (oldSnapshot) {
                return this.snap().getChangeRange(oldSnapshot);
            };
            return ScriptInfo;
        })();
        var LSHost = (function () {
            function LSHost(host, project) {
                this.host = host;
                this.project = project;
                this.ls = null;
                this.filenameToScript = {};
                this.roots = [];
            }
            LSHost.prototype.getDefaultLibFileName = function () {
                var nodeModuleBinDir = ts.getDirectoryPath(ts.normalizePath(this.host.getExecutingFilePath()));
                return ts.combinePaths(nodeModuleBinDir, ts.getDefaultLibFileName(this.compilationSettings));
            };
            LSHost.prototype.getScriptSnapshot = function (filename) {
                var scriptInfo = this.getScriptInfo(filename);
                if (scriptInfo) {
                    return scriptInfo.snap();
                }
            };
            LSHost.prototype.setCompilationSettings = function (opt) {
                this.compilationSettings = opt;
            };
            LSHost.prototype.lineAffectsRefs = function (filename, line) {
                var info = this.getScriptInfo(filename);
                var lineInfo = info.getLineInfo(line);
                if (lineInfo && lineInfo.text) {
                    var regex = /reference|import|\/\*|\*\//;
                    return regex.test(lineInfo.text);
                }
            };
            LSHost.prototype.getCompilationSettings = function () {
                return this.compilationSettings;
            };
            LSHost.prototype.getScriptFileNames = function () {
                return this.roots.map(function (root) { return root.fileName; });
            };
            LSHost.prototype.getScriptVersion = function (filename) {
                return this.getScriptInfo(filename).svc.latestVersion().toString();
            };
            LSHost.prototype.getCurrentDirectory = function () {
                return "";
            };
            LSHost.prototype.getScriptIsOpen = function (filename) {
                return this.getScriptInfo(filename).isOpen;
            };
            LSHost.prototype.removeReferencedFile = function (info) {
                if (!info.isOpen) {
                    this.filenameToScript[info.fileName] = undefined;
                }
            };
            LSHost.prototype.getScriptInfo = function (filename) {
                var scriptInfo = ts.lookUp(this.filenameToScript, filename);
                if (!scriptInfo) {
                    scriptInfo = this.project.openReferencedFile(filename);
                    if (scriptInfo) {
                        this.filenameToScript[scriptInfo.fileName] = scriptInfo;
                    }
                }
                else {
                }
                return scriptInfo;
            };
            LSHost.prototype.addRoot = function (info) {
                var scriptInfo = ts.lookUp(this.filenameToScript, info.fileName);
                if (!scriptInfo) {
                    this.filenameToScript[info.fileName] = info;
                    this.roots.push(info);
                }
            };
            LSHost.prototype.saveTo = function (filename, tmpfilename) {
                var script = this.getScriptInfo(filename);
                if (script) {
                    var snap = script.snap();
                    this.host.writeFile(tmpfilename, snap.getText(0, snap.getLength()));
                }
            };
            LSHost.prototype.reloadScript = function (filename, tmpfilename, cb) {
                var script = this.getScriptInfo(filename);
                if (script) {
                    script.svc.reloadFromFile(tmpfilename, cb);
                }
            };
            LSHost.prototype.editScript = function (filename, start, end, newText) {
                var script = this.getScriptInfo(filename);
                if (script) {
                    script.editContent(start, end, newText);
                    return;
                }
                throw new Error("No script with name '" + filename + "'");
            };
            LSHost.prototype.resolvePath = function (path) {
                var start = new Date().getTime();
                var result = this.host.resolvePath(path);
                return result;
            };
            LSHost.prototype.fileExists = function (path) {
                var start = new Date().getTime();
                var result = this.host.fileExists(path);
                return result;
            };
            LSHost.prototype.directoryExists = function (path) {
                return this.host.directoryExists(path);
            };
            LSHost.prototype.lineToTextSpan = function (filename, line) {
                var script = this.filenameToScript[filename];
                var index = script.snap().index;
                var lineInfo = index.lineNumberToInfo(line + 1);
                var len;
                if (lineInfo.leaf) {
                    len = lineInfo.leaf.text.length;
                }
                else {
                    var nextLineInfo = index.lineNumberToInfo(line + 2);
                    len = nextLineInfo.offset - lineInfo.offset;
                }
                return ts.createTextSpan(lineInfo.offset, len);
            };
            LSHost.prototype.lineOffsetToPosition = function (filename, line, offset) {
                var script = this.filenameToScript[filename];
                var index = script.snap().index;
                var lineInfo = index.lineNumberToInfo(line);
                return (lineInfo.offset + offset - 1);
            };
            LSHost.prototype.positionToLineOffset = function (filename, position) {
                var script = this.filenameToScript[filename];
                var index = script.snap().index;
                var lineOffset = index.charOffsetToLineNumberAndPos(position);
                return { line: lineOffset.line, offset: lineOffset.offset + 1 };
            };
            return LSHost;
        })();
        function getAbsolutePath(filename, directory) {
            var rootLength = ts.getRootLength(filename);
            if (rootLength > 0) {
                return filename;
            }
            else {
                var splitFilename = filename.split('/');
                var splitDir = directory.split('/');
                var i = 0;
                var dirTail = 0;
                var sflen = splitFilename.length;
                while ((i < sflen) && (splitFilename[i].charAt(0) == '.')) {
                    var dots = splitFilename[i];
                    if (dots == '..') {
                        dirTail++;
                    }
                    else if (dots != '.') {
                        return undefined;
                    }
                    i++;
                }
                return splitDir.slice(0, splitDir.length - dirTail).concat(splitFilename.slice(i)).join('/');
            }
        }
        var Project = (function () {
            function Project(projectService, projectOptions) {
                this.projectService = projectService;
                this.projectOptions = projectOptions;
                this.filenameToSourceFile = {};
                this.updateGraphSeq = 0;
                this.openRefCount = 0;
                this.compilerService = new CompilerService(this, projectOptions && projectOptions.compilerOptions);
            }
            Project.prototype.addOpenRef = function () {
                this.openRefCount++;
            };
            Project.prototype.deleteOpenRef = function () {
                this.openRefCount--;
                return this.openRefCount;
            };
            Project.prototype.openReferencedFile = function (filename) {
                return this.projectService.openFile(filename, false);
            };
            Project.prototype.getSourceFile = function (info) {
                return this.filenameToSourceFile[info.fileName];
            };
            Project.prototype.getSourceFileFromName = function (filename, requireOpen) {
                var info = this.projectService.getScriptInfo(filename);
                if (info) {
                    if ((!requireOpen) || info.isOpen) {
                        return this.getSourceFile(info);
                    }
                }
            };
            Project.prototype.isRoot = function (info) {
                return this.compilerService.host.roots.some(function (root) { return root === info; });
            };
            Project.prototype.removeReferencedFile = function (info) {
                this.compilerService.host.removeReferencedFile(info);
                this.updateGraph();
            };
            Project.prototype.updateFileMap = function () {
                this.filenameToSourceFile = {};
                var sourceFiles = this.program.getSourceFiles();
                for (var i = 0, len = sourceFiles.length; i < len; i++) {
                    var normFilename = ts.normalizePath(sourceFiles[i].fileName);
                    this.filenameToSourceFile[normFilename] = sourceFiles[i];
                }
            };
            Project.prototype.finishGraph = function () {
                this.updateGraph();
                this.compilerService.languageService.getNavigateToItems(".*");
            };
            Project.prototype.updateGraph = function () {
                this.program = this.compilerService.languageService.getProgram();
                this.updateFileMap();
            };
            Project.prototype.isConfiguredProject = function () {
                return this.projectFilename;
            };
            Project.prototype.addRoot = function (info) {
                info.defaultProject = this;
                this.compilerService.host.addRoot(info);
            };
            Project.prototype.filesToString = function () {
                var strBuilder = "";
                ts.forEachValue(this.filenameToSourceFile, function (sourceFile) { strBuilder += sourceFile.fileName + "\n"; });
                return strBuilder;
            };
            Project.prototype.setProjectOptions = function (projectOptions) {
                this.projectOptions = projectOptions;
                if (projectOptions.compilerOptions) {
                    this.compilerService.setCompilerOptions(projectOptions.compilerOptions);
                }
            };
            return Project;
        })();
        server.Project = Project;
        function copyListRemovingItem(item, list) {
            var copiedList = [];
            for (var i = 0, len = list.length; i < len; i++) {
                if (list[i] != item) {
                    copiedList.push(list[i]);
                }
            }
            return copiedList;
        }
        var ProjectService = (function () {
            function ProjectService(host, psLogger, eventHandler) {
                this.host = host;
                this.psLogger = psLogger;
                this.eventHandler = eventHandler;
                this.filenameToScriptInfo = {};
                this.openFileRoots = [];
                this.inferredProjects = [];
                this.configuredProjects = [];
                this.openFilesReferenced = [];
                this.openFileRootsConfigured = [];
                this.addDefaultHostConfiguration();
            }
            ProjectService.prototype.addDefaultHostConfiguration = function () {
                this.hostConfiguration = {
                    formatCodeOptions: ts.clone(CompilerService.defaultFormatCodeOptions),
                    hostInfo: "Unknown host"
                };
            };
            ProjectService.prototype.getFormatCodeOptions = function (file) {
                if (file) {
                    var info = this.filenameToScriptInfo[file];
                    if (info) {
                        return info.formatCodeOptions;
                    }
                }
                return this.hostConfiguration.formatCodeOptions;
            };
            ProjectService.prototype.watchedFileChanged = function (fileName) {
                var info = this.filenameToScriptInfo[fileName];
                if (!info) {
                    this.psLogger.info("Error: got watch notification for unknown file: " + fileName);
                }
                if (!this.host.fileExists(fileName)) {
                    this.fileDeletedInFilesystem(info);
                }
                else {
                    if (info && (!info.isOpen)) {
                        info.svc.reloadFromFile(info.fileName);
                    }
                }
            };
            ProjectService.prototype.log = function (msg, type) {
                if (type === void 0) { type = "Err"; }
                this.psLogger.msg(msg, type);
            };
            ProjectService.prototype.setHostConfiguration = function (args) {
                if (args.file) {
                    var info = this.filenameToScriptInfo[args.file];
                    if (info) {
                        info.setFormatOptions(args.formatOptions);
                        this.log("Host configuration update for file " + args.file, "Info");
                    }
                }
                else {
                    if (args.hostInfo !== undefined) {
                        this.hostConfiguration.hostInfo = args.hostInfo;
                        this.log("Host information " + args.hostInfo, "Info");
                    }
                    if (args.formatOptions) {
                        mergeFormatOptions(this.hostConfiguration.formatCodeOptions, args.formatOptions);
                        this.log("Format host information updated", "Info");
                    }
                }
            };
            ProjectService.prototype.closeLog = function () {
                this.psLogger.close();
            };
            ProjectService.prototype.createInferredProject = function (root) {
                var iproj = new Project(this);
                iproj.addRoot(root);
                iproj.finishGraph();
                this.inferredProjects.push(iproj);
                return iproj;
            };
            ProjectService.prototype.fileDeletedInFilesystem = function (info) {
                this.psLogger.info(info.fileName + " deleted");
                if (info.fileWatcher) {
                    info.fileWatcher.close();
                    info.fileWatcher = undefined;
                }
                if (!info.isOpen) {
                    this.filenameToScriptInfo[info.fileName] = undefined;
                    var referencingProjects = this.findReferencingProjects(info);
                    for (var i = 0, len = referencingProjects.length; i < len; i++) {
                        referencingProjects[i].removeReferencedFile(info);
                    }
                    for (var j = 0, flen = this.openFileRoots.length; j < flen; j++) {
                        var openFile = this.openFileRoots[j];
                        if (this.eventHandler) {
                            this.eventHandler("context", openFile.defaultProject, openFile.fileName);
                        }
                    }
                    for (var j = 0, flen = this.openFilesReferenced.length; j < flen; j++) {
                        var openFile = this.openFilesReferenced[j];
                        if (this.eventHandler) {
                            this.eventHandler("context", openFile.defaultProject, openFile.fileName);
                        }
                    }
                }
                this.printProjects();
            };
            ProjectService.prototype.updateConfiguredProjectList = function () {
                var configuredProjects = [];
                for (var i = 0, len = this.configuredProjects.length; i < len; i++) {
                    if (this.configuredProjects[i].openRefCount > 0) {
                        configuredProjects.push(this.configuredProjects[i]);
                    }
                }
                this.configuredProjects = configuredProjects;
            };
            ProjectService.prototype.setConfiguredProjectRoot = function (info) {
                for (var i = 0, len = this.configuredProjects.length; i < len; i++) {
                    var configuredProject = this.configuredProjects[i];
                    if (configuredProject.isRoot(info)) {
                        info.defaultProject = configuredProject;
                        configuredProject.addOpenRef();
                        return true;
                    }
                }
                return false;
            };
            ProjectService.prototype.addOpenFile = function (info) {
                if (this.setConfiguredProjectRoot(info)) {
                    this.openFileRootsConfigured.push(info);
                }
                else {
                    this.findReferencingProjects(info);
                    if (info.defaultProject) {
                        this.openFilesReferenced.push(info);
                    }
                    else {
                        info.defaultProject = this.createInferredProject(info);
                        var openFileRoots = [];
                        for (var i = 0, len = this.openFileRoots.length; i < len; i++) {
                            var r = this.openFileRoots[i];
                            if (info.defaultProject.getSourceFile(r)) {
                                this.inferredProjects =
                                    copyListRemovingItem(r.defaultProject, this.inferredProjects);
                                this.openFilesReferenced.push(r);
                                r.defaultProject = info.defaultProject;
                            }
                            else {
                                openFileRoots.push(r);
                            }
                        }
                        this.openFileRoots = openFileRoots;
                        this.openFileRoots.push(info);
                    }
                }
                this.updateConfiguredProjectList();
            };
            ProjectService.prototype.closeOpenFile = function (info) {
                var openFileRoots = [];
                var removedProject;
                for (var i = 0, len = this.openFileRoots.length; i < len; i++) {
                    if (info === this.openFileRoots[i]) {
                        removedProject = info.defaultProject;
                    }
                    else {
                        openFileRoots.push(this.openFileRoots[i]);
                    }
                }
                this.openFileRoots = openFileRoots;
                if (!removedProject) {
                    var openFileRootsConfigured = [];
                    for (var i = 0, len = this.openFileRootsConfigured.length; i < len; i++) {
                        if (info === this.openFileRootsConfigured[i]) {
                            if (info.defaultProject.deleteOpenRef() === 0) {
                                removedProject = info.defaultProject;
                            }
                        }
                        else {
                            openFileRootsConfigured.push(this.openFileRootsConfigured[i]);
                        }
                    }
                    this.openFileRootsConfigured = openFileRootsConfigured;
                }
                if (removedProject) {
                    if (removedProject.isConfiguredProject()) {
                        this.configuredProjects = copyListRemovingItem(removedProject, this.configuredProjects);
                    }
                    else {
                        this.inferredProjects = copyListRemovingItem(removedProject, this.inferredProjects);
                    }
                    var openFilesReferenced = [];
                    var orphanFiles = [];
                    for (var i = 0, len = this.openFilesReferenced.length; i < len; i++) {
                        var f = this.openFilesReferenced[i];
                        if (f.defaultProject == removedProject) {
                            f.defaultProject = undefined;
                            orphanFiles.push(f);
                        }
                        else {
                            openFilesReferenced.push(f);
                        }
                    }
                    this.openFilesReferenced = openFilesReferenced;
                    for (var i = 0, len = orphanFiles.length; i < len; i++) {
                        this.addOpenFile(orphanFiles[i]);
                    }
                }
                else {
                    this.openFilesReferenced = copyListRemovingItem(info, this.openFilesReferenced);
                }
                info.close();
            };
            ProjectService.prototype.findReferencingProjects = function (info, excludedProject) {
                var referencingProjects = [];
                info.defaultProject = undefined;
                for (var i = 0, len = this.inferredProjects.length; i < len; i++) {
                    var inferredProject = this.inferredProjects[i];
                    inferredProject.updateGraph();
                    if (inferredProject != excludedProject) {
                        if (inferredProject.getSourceFile(info)) {
                            info.defaultProject = inferredProject;
                            referencingProjects.push(inferredProject);
                        }
                    }
                }
                for (var i = 0, len = this.configuredProjects.length; i < len; i++) {
                    var configuredProject = this.configuredProjects[i];
                    configuredProject.updateGraph();
                    if (configuredProject.getSourceFile(info)) {
                        info.defaultProject = configuredProject;
                    }
                }
                return referencingProjects;
            };
            ProjectService.prototype.updateProjectStructure = function () {
                this.log("updating project structure from ...", "Info");
                this.printProjects();
                var openFilesReferenced = [];
                var unattachedOpenFiles = [];
                for (var i = 0, len = this.openFilesReferenced.length; i < len; i++) {
                    var referencedFile = this.openFilesReferenced[i];
                    referencedFile.defaultProject.updateGraph();
                    var sourceFile = referencedFile.defaultProject.getSourceFile(referencedFile);
                    if (sourceFile) {
                        openFilesReferenced.push(referencedFile);
                    }
                    else {
                        unattachedOpenFiles.push(referencedFile);
                    }
                }
                this.openFilesReferenced = openFilesReferenced;
                var openFileRoots = [];
                for (var i = 0, len = this.openFileRoots.length; i < len; i++) {
                    var rootFile = this.openFileRoots[i];
                    var rootedProject = rootFile.defaultProject;
                    var referencingProjects = this.findReferencingProjects(rootFile, rootedProject);
                    if (referencingProjects.length == 0) {
                        rootFile.defaultProject = rootedProject;
                        openFileRoots.push(rootFile);
                    }
                    else {
                        this.inferredProjects = copyListRemovingItem(rootedProject, this.inferredProjects);
                        this.openFilesReferenced.push(rootFile);
                    }
                }
                this.openFileRoots = openFileRoots;
                for (var i = 0, len = unattachedOpenFiles.length; i < len; i++) {
                    this.addOpenFile(unattachedOpenFiles[i]);
                }
                this.printProjects();
            };
            ProjectService.prototype.getScriptInfo = function (filename) {
                filename = ts.normalizePath(filename);
                return ts.lookUp(this.filenameToScriptInfo, filename);
            };
            ProjectService.prototype.openFile = function (fileName, openedByClient) {
                var _this = this;
                fileName = ts.normalizePath(fileName);
                var info = ts.lookUp(this.filenameToScriptInfo, fileName);
                if (!info) {
                    var content;
                    if (this.host.fileExists(fileName)) {
                        content = this.host.readFile(fileName);
                    }
                    if (!content) {
                        if (openedByClient) {
                            content = "";
                        }
                    }
                    if (content !== undefined) {
                        var indentSize;
                        info = new ScriptInfo(this.host, fileName, content, openedByClient);
                        info.setFormatOptions(this.getFormatCodeOptions());
                        this.filenameToScriptInfo[fileName] = info;
                        if (!info.isOpen) {
                            info.fileWatcher = this.host.watchFile(fileName, function (_) { _this.watchedFileChanged(fileName); });
                        }
                    }
                }
                if (info) {
                    if (openedByClient) {
                        info.isOpen = true;
                    }
                }
                return info;
            };
            ProjectService.prototype.findConfigFile = function (searchPath) {
                while (true) {
                    var fileName = ts.combinePaths(searchPath, "tsconfig.json");
                    if (this.host.fileExists(fileName)) {
                        return fileName;
                    }
                    var parentPath = ts.getDirectoryPath(searchPath);
                    if (parentPath === searchPath) {
                        break;
                    }
                    searchPath = parentPath;
                }
                return undefined;
            };
            ProjectService.prototype.openClientFile = function (fileName) {
                var searchPath = ts.normalizePath(ts.getDirectoryPath(fileName));
                this.log("Search path: " + searchPath, "Info");
                var configFileName = this.findConfigFile(searchPath);
                if (configFileName) {
                    this.log("Config file name: " + configFileName, "Info");
                }
                else {
                    this.log("no config file");
                }
                if (configFileName) {
                    configFileName = getAbsolutePath(configFileName, searchPath);
                }
                if (configFileName && (!this.configProjectIsActive(configFileName))) {
                    var configResult = this.openConfigFile(configFileName, fileName);
                    if (!configResult.success) {
                        this.log("Error opening config file " + configFileName + " " + configResult.errorMsg);
                    }
                    else {
                        this.log("Opened configuration file " + configFileName, "Info");
                        this.configuredProjects.push(configResult.project);
                    }
                }
                var info = this.openFile(fileName, true);
                this.addOpenFile(info);
                this.printProjects();
                return info;
            };
            ProjectService.prototype.closeClientFile = function (filename) {
                var info = ts.lookUp(this.filenameToScriptInfo, filename);
                if (info) {
                    this.closeOpenFile(info);
                    info.isOpen = false;
                }
                this.printProjects();
            };
            ProjectService.prototype.getProjectForFile = function (filename) {
                var scriptInfo = ts.lookUp(this.filenameToScriptInfo, filename);
                if (scriptInfo) {
                    return scriptInfo.defaultProject;
                }
            };
            ProjectService.prototype.printProjectsForFile = function (filename) {
                var scriptInfo = ts.lookUp(this.filenameToScriptInfo, filename);
                if (scriptInfo) {
                    this.psLogger.startGroup();
                    this.psLogger.info("Projects for " + filename);
                    var projects = this.findReferencingProjects(scriptInfo);
                    for (var i = 0, len = projects.length; i < len; i++) {
                        this.psLogger.info("Project " + i.toString());
                    }
                    this.psLogger.endGroup();
                }
                else {
                    this.psLogger.info(filename + " not in any project");
                }
            };
            ProjectService.prototype.printProjects = function () {
                if (!this.psLogger.isVerbose()) {
                    return;
                }
                this.psLogger.startGroup();
                for (var i = 0, len = this.inferredProjects.length; i < len; i++) {
                    var project = this.inferredProjects[i];
                    project.updateGraph();
                    this.psLogger.info("Project " + i.toString());
                    this.psLogger.info(project.filesToString());
                    this.psLogger.info("-----------------------------------------------");
                }
                for (var i = 0, len = this.configuredProjects.length; i < len; i++) {
                    var project = this.configuredProjects[i];
                    project.updateGraph();
                    this.psLogger.info("Project (configured) " + (i + this.inferredProjects.length).toString());
                    this.psLogger.info(project.filesToString());
                    this.psLogger.info("-----------------------------------------------");
                }
                this.psLogger.info("Open file roots of inferred projects: ");
                for (var i = 0, len = this.openFileRoots.length; i < len; i++) {
                    this.psLogger.info(this.openFileRoots[i].fileName);
                }
                this.psLogger.info("Open files referenced by inferred or configured projects: ");
                for (var i = 0, len = this.openFilesReferenced.length; i < len; i++) {
                    var fileInfo = this.openFilesReferenced[i].fileName;
                    if (this.openFilesReferenced[i].defaultProject.isConfiguredProject()) {
                        fileInfo += " (configured)";
                    }
                    this.psLogger.info(fileInfo);
                }
                this.psLogger.info("Open file roots of configured projects: ");
                for (var i = 0, len = this.openFileRootsConfigured.length; i < len; i++) {
                    this.psLogger.info(this.openFileRootsConfigured[i].fileName);
                }
                this.psLogger.endGroup();
            };
            ProjectService.prototype.configProjectIsActive = function (fileName) {
                for (var i = 0, len = this.configuredProjects.length; i < len; i++) {
                    if (this.configuredProjects[i].projectFilename == fileName) {
                        return true;
                    }
                }
                return false;
            };
            ProjectService.prototype.openConfigFile = function (configFilename, clientFileName) {
                configFilename = ts.normalizePath(configFilename);
                var dirPath = ts.getDirectoryPath(configFilename);
                var rawConfig = ts.readConfigFile(configFilename);
                if (rawConfig.error) {
                    return rawConfig.error;
                }
                else {
                    var parsedCommandLine = ts.parseConfigFile(rawConfig.config, ts.sys, dirPath);
                    if (parsedCommandLine.errors && (parsedCommandLine.errors.length > 0)) {
                        return { errorMsg: "tsconfig option errors" };
                    }
                    else if (parsedCommandLine.fileNames) {
                        var projectOptions = {
                            files: parsedCommandLine.fileNames,
                            compilerOptions: parsedCommandLine.options
                        };
                        var proj = this.createProject(configFilename, projectOptions);
                        for (var i = 0, len = parsedCommandLine.fileNames.length; i < len; i++) {
                            var rootFilename = parsedCommandLine.fileNames[i];
                            if (this.host.fileExists(rootFilename)) {
                                var info = this.openFile(rootFilename, clientFileName == rootFilename);
                                proj.addRoot(info);
                            }
                            else {
                                return { errorMsg: "specified file " + rootFilename + " not found" };
                            }
                        }
                        proj.finishGraph();
                        return { success: true, project: proj };
                    }
                    else {
                        return { errorMsg: "no files found" };
                    }
                }
            };
            ProjectService.prototype.createProject = function (projectFilename, projectOptions) {
                var project = new Project(this, projectOptions);
                project.projectFilename = projectFilename;
                return project;
            };
            return ProjectService;
        })();
        server.ProjectService = ProjectService;
        var CompilerService = (function () {
            function CompilerService(project, opt) {
                this.project = project;
                this.documentRegistry = ts.createDocumentRegistry();
                this.host = new LSHost(project.projectService.host, project);
                if (opt) {
                    this.setCompilerOptions(opt);
                }
                else {
                    this.setCompilerOptions(ts.getDefaultCompilerOptions());
                }
                this.languageService = ts.createLanguageService(this.host, this.documentRegistry);
                this.classifier = ts.createClassifier();
            }
            CompilerService.prototype.setCompilerOptions = function (opt) {
                this.settings = opt;
                this.host.setCompilationSettings(opt);
            };
            CompilerService.prototype.isExternalModule = function (filename) {
                var sourceFile = this.languageService.getSourceFile(filename);
                return ts.isExternalModule(sourceFile);
            };
            CompilerService.defaultFormatCodeOptions = {
                IndentSize: 4,
                TabSize: 4,
                NewLineCharacter: ts.sys.newLine,
                ConvertTabsToSpaces: true,
                InsertSpaceAfterCommaDelimiter: true,
                InsertSpaceAfterSemicolonInForStatements: true,
                InsertSpaceBeforeAndAfterBinaryOperators: true,
                InsertSpaceAfterKeywordsInControlFlowStatements: true,
                InsertSpaceAfterFunctionKeywordForAnonymousFunctions: false,
                InsertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis: false,
                PlaceOpenBraceOnNewLineForFunctions: false,
                PlaceOpenBraceOnNewLineForControlBlocks: false
            };
            return CompilerService;
        })();
        var CharRangeSection;
        (function (CharRangeSection) {
            CharRangeSection[CharRangeSection["PreStart"] = 0] = "PreStart";
            CharRangeSection[CharRangeSection["Start"] = 1] = "Start";
            CharRangeSection[CharRangeSection["Entire"] = 2] = "Entire";
            CharRangeSection[CharRangeSection["Mid"] = 3] = "Mid";
            CharRangeSection[CharRangeSection["End"] = 4] = "End";
            CharRangeSection[CharRangeSection["PostEnd"] = 5] = "PostEnd";
        })(CharRangeSection || (CharRangeSection = {}));
        var BaseLineIndexWalker = (function () {
            function BaseLineIndexWalker() {
                this.goSubtree = true;
                this.done = false;
            }
            BaseLineIndexWalker.prototype.leaf = function (rangeStart, rangeLength, ll) {
            };
            return BaseLineIndexWalker;
        })();
        var EditWalker = (function (_super) {
            __extends(EditWalker, _super);
            function EditWalker() {
                _super.call(this);
                this.lineIndex = new LineIndex();
                this.endBranch = [];
                this.state = CharRangeSection.Entire;
                this.initialText = "";
                this.trailingText = "";
                this.suppressTrailingText = false;
                this.lineIndex.root = new LineNode();
                this.startPath = [this.lineIndex.root];
                this.stack = [this.lineIndex.root];
            }
            EditWalker.prototype.insertLines = function (insertedText) {
                if (this.suppressTrailingText) {
                    this.trailingText = "";
                }
                if (insertedText) {
                    insertedText = this.initialText + insertedText + this.trailingText;
                }
                else {
                    insertedText = this.initialText + this.trailingText;
                }
                var lm = LineIndex.linesFromText(insertedText);
                var lines = lm.lines;
                if (lines.length > 1) {
                    if (lines[lines.length - 1] == "") {
                        lines.length--;
                    }
                }
                var branchParent;
                var lastZeroCount;
                for (var k = this.endBranch.length - 1; k >= 0; k--) {
                    this.endBranch[k].updateCounts();
                    if (this.endBranch[k].charCount() == 0) {
                        lastZeroCount = this.endBranch[k];
                        if (k > 0) {
                            branchParent = this.endBranch[k - 1];
                        }
                        else {
                            branchParent = this.branchNode;
                        }
                    }
                }
                if (lastZeroCount) {
                    branchParent.remove(lastZeroCount);
                }
                var insertionNode = this.startPath[this.startPath.length - 2];
                var leafNode = this.startPath[this.startPath.length - 1];
                var len = lines.length;
                if (len > 0) {
                    leafNode.text = lines[0];
                    if (len > 1) {
                        var insertedNodes = new Array(len - 1);
                        var startNode = leafNode;
                        for (var i = 1, len = lines.length; i < len; i++) {
                            insertedNodes[i - 1] = new LineLeaf(lines[i]);
                        }
                        var pathIndex = this.startPath.length - 2;
                        while (pathIndex >= 0) {
                            insertionNode = this.startPath[pathIndex];
                            insertedNodes = insertionNode.insertAt(startNode, insertedNodes);
                            pathIndex--;
                            startNode = insertionNode;
                        }
                        var insertedNodesLen = insertedNodes.length;
                        while (insertedNodesLen > 0) {
                            var newRoot = new LineNode();
                            newRoot.add(this.lineIndex.root);
                            insertedNodes = newRoot.insertAt(this.lineIndex.root, insertedNodes);
                            insertedNodesLen = insertedNodes.length;
                            this.lineIndex.root = newRoot;
                        }
                        this.lineIndex.root.updateCounts();
                    }
                    else {
                        for (var j = this.startPath.length - 2; j >= 0; j--) {
                            this.startPath[j].updateCounts();
                        }
                    }
                }
                else {
                    insertionNode.remove(leafNode);
                    for (var j = this.startPath.length - 2; j >= 0; j--) {
                        this.startPath[j].updateCounts();
                    }
                }
                return this.lineIndex;
            };
            EditWalker.prototype.post = function (relativeStart, relativeLength, lineCollection, parent, nodeType) {
                if (lineCollection == this.lineCollectionAtBranch) {
                    this.state = CharRangeSection.End;
                }
                this.stack.length--;
                return undefined;
            };
            EditWalker.prototype.pre = function (relativeStart, relativeLength, lineCollection, parent, nodeType) {
                var currentNode = this.stack[this.stack.length - 1];
                if ((this.state == CharRangeSection.Entire) && (nodeType == CharRangeSection.Start)) {
                    this.state = CharRangeSection.Start;
                    this.branchNode = currentNode;
                    this.lineCollectionAtBranch = lineCollection;
                }
                var child;
                function fresh(node) {
                    if (node.isLeaf()) {
                        return new LineLeaf("");
                    }
                    else
                        return new LineNode();
                }
                switch (nodeType) {
                    case CharRangeSection.PreStart:
                        this.goSubtree = false;
                        if (this.state != CharRangeSection.End) {
                            currentNode.add(lineCollection);
                        }
                        break;
                    case CharRangeSection.Start:
                        if (this.state == CharRangeSection.End) {
                            this.goSubtree = false;
                        }
                        else {
                            child = fresh(lineCollection);
                            currentNode.add(child);
                            this.startPath[this.startPath.length] = child;
                        }
                        break;
                    case CharRangeSection.Entire:
                        if (this.state != CharRangeSection.End) {
                            child = fresh(lineCollection);
                            currentNode.add(child);
                            this.startPath[this.startPath.length] = child;
                        }
                        else {
                            if (!lineCollection.isLeaf()) {
                                child = fresh(lineCollection);
                                currentNode.add(child);
                                this.endBranch[this.endBranch.length] = child;
                            }
                        }
                        break;
                    case CharRangeSection.Mid:
                        this.goSubtree = false;
                        break;
                    case CharRangeSection.End:
                        if (this.state != CharRangeSection.End) {
                            this.goSubtree = false;
                        }
                        else {
                            if (!lineCollection.isLeaf()) {
                                child = fresh(lineCollection);
                                currentNode.add(child);
                                this.endBranch[this.endBranch.length] = child;
                            }
                        }
                        break;
                    case CharRangeSection.PostEnd:
                        this.goSubtree = false;
                        if (this.state != CharRangeSection.Start) {
                            currentNode.add(lineCollection);
                        }
                        break;
                }
                if (this.goSubtree) {
                    this.stack[this.stack.length] = child;
                }
                return lineCollection;
            };
            EditWalker.prototype.leaf = function (relativeStart, relativeLength, ll) {
                if (this.state == CharRangeSection.Start) {
                    this.initialText = ll.text.substring(0, relativeStart);
                }
                else if (this.state == CharRangeSection.Entire) {
                    this.initialText = ll.text.substring(0, relativeStart);
                    this.trailingText = ll.text.substring(relativeStart + relativeLength);
                }
                else {
                    this.trailingText = ll.text.substring(relativeStart + relativeLength);
                }
            };
            return EditWalker;
        })(BaseLineIndexWalker);
        var TextChange = (function () {
            function TextChange(pos, deleteLen, insertedText) {
                this.pos = pos;
                this.deleteLen = deleteLen;
                this.insertedText = insertedText;
            }
            TextChange.prototype.getTextChangeRange = function () {
                return ts.createTextChangeRange(ts.createTextSpan(this.pos, this.deleteLen), this.insertedText ? this.insertedText.length : 0);
            };
            return TextChange;
        })();
        var ScriptVersionCache = (function () {
            function ScriptVersionCache() {
                this.changes = [];
                this.versions = [];
                this.minVersion = 0;
                this.currentVersion = 0;
            }
            ScriptVersionCache.prototype.edit = function (pos, deleteLen, insertedText) {
                this.changes[this.changes.length] = new TextChange(pos, deleteLen, insertedText);
                if ((this.changes.length > ScriptVersionCache.changeNumberThreshold) ||
                    (deleteLen > ScriptVersionCache.changeLengthThreshold) ||
                    (insertedText && (insertedText.length > ScriptVersionCache.changeLengthThreshold))) {
                    this.getSnapshot();
                }
            };
            ScriptVersionCache.prototype.latest = function () {
                return this.versions[this.currentVersion];
            };
            ScriptVersionCache.prototype.latestVersion = function () {
                if (this.changes.length > 0) {
                    this.getSnapshot();
                }
                return this.currentVersion;
            };
            ScriptVersionCache.prototype.reloadFromFile = function (filename, cb) {
                var content = ts.sys.readFile(filename);
                this.reload(content);
                if (cb)
                    cb();
            };
            ScriptVersionCache.prototype.reload = function (script) {
                this.currentVersion++;
                this.changes = [];
                var snap = new LineIndexSnapshot(this.currentVersion, this);
                this.versions[this.currentVersion] = snap;
                snap.index = new LineIndex();
                var lm = LineIndex.linesFromText(script);
                snap.index.load(lm.lines);
                for (var i = this.minVersion; i < this.currentVersion; i++) {
                    this.versions[i] = undefined;
                }
                this.minVersion = this.currentVersion;
            };
            ScriptVersionCache.prototype.getSnapshot = function () {
                var snap = this.versions[this.currentVersion];
                if (this.changes.length > 0) {
                    var snapIndex = this.latest().index;
                    for (var i = 0, len = this.changes.length; i < len; i++) {
                        var change = this.changes[i];
                        snapIndex = snapIndex.edit(change.pos, change.deleteLen, change.insertedText);
                    }
                    snap = new LineIndexSnapshot(this.currentVersion + 1, this);
                    snap.index = snapIndex;
                    snap.changesSincePreviousVersion = this.changes;
                    this.currentVersion = snap.version;
                    this.versions[snap.version] = snap;
                    this.changes = [];
                    if ((this.currentVersion - this.minVersion) >= ScriptVersionCache.maxVersions) {
                        var oldMin = this.minVersion;
                        this.minVersion = (this.currentVersion - ScriptVersionCache.maxVersions) + 1;
                        for (var j = oldMin; j < this.minVersion; j++) {
                            this.versions[j] = undefined;
                        }
                    }
                }
                return snap;
            };
            ScriptVersionCache.prototype.getTextChangesBetweenVersions = function (oldVersion, newVersion) {
                if (oldVersion < newVersion) {
                    if (oldVersion >= this.minVersion) {
                        var textChangeRanges = [];
                        for (var i = oldVersion + 1; i <= newVersion; i++) {
                            var snap = this.versions[i];
                            for (var j = 0, len = snap.changesSincePreviousVersion.length; j < len; j++) {
                                var textChange = snap.changesSincePreviousVersion[j];
                                textChangeRanges[textChangeRanges.length] = textChange.getTextChangeRange();
                            }
                        }
                        return ts.collapseTextChangeRangesAcrossMultipleVersions(textChangeRanges);
                    }
                    else {
                        return undefined;
                    }
                }
                else {
                    return ts.unchangedTextChangeRange;
                }
            };
            ScriptVersionCache.fromString = function (script) {
                var svc = new ScriptVersionCache();
                var snap = new LineIndexSnapshot(0, svc);
                svc.versions[svc.currentVersion] = snap;
                snap.index = new LineIndex();
                var lm = LineIndex.linesFromText(script);
                snap.index.load(lm.lines);
                return svc;
            };
            ScriptVersionCache.changeNumberThreshold = 8;
            ScriptVersionCache.changeLengthThreshold = 256;
            ScriptVersionCache.maxVersions = 8;
            return ScriptVersionCache;
        })();
        server.ScriptVersionCache = ScriptVersionCache;
        var LineIndexSnapshot = (function () {
            function LineIndexSnapshot(version, cache) {
                this.version = version;
                this.cache = cache;
                this.changesSincePreviousVersion = [];
            }
            LineIndexSnapshot.prototype.getText = function (rangeStart, rangeEnd) {
                return this.index.getText(rangeStart, rangeEnd - rangeStart);
            };
            LineIndexSnapshot.prototype.getLength = function () {
                return this.index.root.charCount();
            };
            LineIndexSnapshot.prototype.getLineStartPositions = function () {
                var starts = [-1];
                var count = 1;
                var pos = 0;
                this.index.every(function (ll, s, len) {
                    starts[count++] = pos;
                    pos += ll.text.length;
                    return true;
                }, 0);
                return starts;
            };
            LineIndexSnapshot.prototype.getLineMapper = function () {
                var _this = this;
                return (function (line) {
                    return _this.index.lineNumberToInfo(line).offset;
                });
            };
            LineIndexSnapshot.prototype.getTextChangeRangeSinceVersion = function (scriptVersion) {
                if (this.version <= scriptVersion) {
                    return ts.unchangedTextChangeRange;
                }
                else {
                    return this.cache.getTextChangesBetweenVersions(scriptVersion, this.version);
                }
            };
            LineIndexSnapshot.prototype.getChangeRange = function (oldSnapshot) {
                var oldSnap = oldSnapshot;
                return this.getTextChangeRangeSinceVersion(oldSnap.version);
            };
            return LineIndexSnapshot;
        })();
        var LineIndex = (function () {
            function LineIndex() {
                this.checkEdits = false;
            }
            LineIndex.prototype.charOffsetToLineNumberAndPos = function (charOffset) {
                return this.root.charOffsetToLineNumberAndPos(1, charOffset);
            };
            LineIndex.prototype.lineNumberToInfo = function (lineNumber) {
                var lineCount = this.root.lineCount();
                if (lineNumber <= lineCount) {
                    var lineInfo = this.root.lineNumberToInfo(lineNumber, 0);
                    lineInfo.line = lineNumber;
                    return lineInfo;
                }
                else {
                    return {
                        line: lineNumber,
                        offset: this.root.charCount()
                    };
                }
            };
            LineIndex.prototype.load = function (lines) {
                if (lines.length > 0) {
                    var leaves = [];
                    for (var i = 0, len = lines.length; i < len; i++) {
                        leaves[i] = new LineLeaf(lines[i]);
                    }
                    this.root = LineIndex.buildTreeFromBottom(leaves);
                }
                else {
                    this.root = new LineNode();
                }
            };
            LineIndex.prototype.walk = function (rangeStart, rangeLength, walkFns) {
                this.root.walk(rangeStart, rangeLength, walkFns);
            };
            LineIndex.prototype.getText = function (rangeStart, rangeLength) {
                var accum = "";
                if ((rangeLength > 0) && (rangeStart < this.root.charCount())) {
                    this.walk(rangeStart, rangeLength, {
                        goSubtree: true,
                        done: false,
                        leaf: function (relativeStart, relativeLength, ll) {
                            accum = accum.concat(ll.text.substring(relativeStart, relativeStart + relativeLength));
                        }
                    });
                }
                return accum;
            };
            LineIndex.prototype.getLength = function () {
                return this.root.charCount();
            };
            LineIndex.prototype.every = function (f, rangeStart, rangeEnd) {
                if (!rangeEnd) {
                    rangeEnd = this.root.charCount();
                }
                var walkFns = {
                    goSubtree: true,
                    done: false,
                    leaf: function (relativeStart, relativeLength, ll) {
                        if (!f(ll, relativeStart, relativeLength)) {
                            this.done = true;
                        }
                    }
                };
                this.walk(rangeStart, rangeEnd - rangeStart, walkFns);
                return !walkFns.done;
            };
            LineIndex.prototype.edit = function (pos, deleteLength, newText) {
                function editFlat(source, s, dl, nt) {
                    if (nt === void 0) { nt = ""; }
                    return source.substring(0, s) + nt + source.substring(s + dl, source.length);
                }
                if (this.root.charCount() == 0) {
                    if (newText) {
                        this.load(LineIndex.linesFromText(newText).lines);
                        return this;
                    }
                }
                else {
                    if (this.checkEdits) {
                        var checkText = editFlat(this.getText(0, this.root.charCount()), pos, deleteLength, newText);
                    }
                    var walker = new EditWalker();
                    if (pos >= this.root.charCount()) {
                        pos = this.root.charCount() - 1;
                        var endString = this.getText(pos, 1);
                        if (newText) {
                            newText = endString + newText;
                        }
                        else {
                            newText = endString;
                        }
                        deleteLength = 0;
                        walker.suppressTrailingText = true;
                    }
                    else if (deleteLength > 0) {
                        var e = pos + deleteLength;
                        var lineInfo = this.charOffsetToLineNumberAndPos(e);
                        if ((lineInfo && (lineInfo.offset == 0))) {
                            deleteLength += lineInfo.text.length;
                            if (newText) {
                                newText = newText + lineInfo.text;
                            }
                            else {
                                newText = lineInfo.text;
                            }
                        }
                    }
                    if (pos < this.root.charCount()) {
                        this.root.walk(pos, deleteLength, walker);
                        walker.insertLines(newText);
                    }
                    if (this.checkEdits) {
                        var updatedText = this.getText(0, this.root.charCount());
                        ts.Debug.assert(checkText == updatedText, "buffer edit mismatch");
                    }
                    return walker.lineIndex;
                }
            };
            LineIndex.buildTreeFromBottom = function (nodes) {
                var nodeCount = Math.ceil(nodes.length / lineCollectionCapacity);
                var interiorNodes = [];
                var nodeIndex = 0;
                for (var i = 0; i < nodeCount; i++) {
                    interiorNodes[i] = new LineNode();
                    var charCount = 0;
                    var lineCount = 0;
                    for (var j = 0; j < lineCollectionCapacity; j++) {
                        if (nodeIndex < nodes.length) {
                            interiorNodes[i].add(nodes[nodeIndex]);
                            charCount += nodes[nodeIndex].charCount();
                            lineCount += nodes[nodeIndex].lineCount();
                        }
                        else {
                            break;
                        }
                        nodeIndex++;
                    }
                    interiorNodes[i].totalChars = charCount;
                    interiorNodes[i].totalLines = lineCount;
                }
                if (interiorNodes.length == 1) {
                    return interiorNodes[0];
                }
                else {
                    return this.buildTreeFromBottom(interiorNodes);
                }
            };
            LineIndex.linesFromText = function (text) {
                var lineStarts = ts.computeLineStarts(text);
                if (lineStarts.length == 0) {
                    return { lines: [], lineMap: lineStarts };
                }
                var lines = new Array(lineStarts.length);
                var lc = lineStarts.length - 1;
                for (var lmi = 0; lmi < lc; lmi++) {
                    lines[lmi] = text.substring(lineStarts[lmi], lineStarts[lmi + 1]);
                }
                var endText = text.substring(lineStarts[lc]);
                if (endText.length > 0) {
                    lines[lc] = endText;
                }
                else {
                    lines.length--;
                }
                return { lines: lines, lineMap: lineStarts };
            };
            return LineIndex;
        })();
        server.LineIndex = LineIndex;
        var LineNode = (function () {
            function LineNode() {
                this.totalChars = 0;
                this.totalLines = 0;
                this.children = [];
            }
            LineNode.prototype.isLeaf = function () {
                return false;
            };
            LineNode.prototype.updateCounts = function () {
                this.totalChars = 0;
                this.totalLines = 0;
                for (var i = 0, len = this.children.length; i < len; i++) {
                    var child = this.children[i];
                    this.totalChars += child.charCount();
                    this.totalLines += child.lineCount();
                }
            };
            LineNode.prototype.execWalk = function (rangeStart, rangeLength, walkFns, childIndex, nodeType) {
                if (walkFns.pre) {
                    walkFns.pre(rangeStart, rangeLength, this.children[childIndex], this, nodeType);
                }
                if (walkFns.goSubtree) {
                    this.children[childIndex].walk(rangeStart, rangeLength, walkFns);
                    if (walkFns.post) {
                        walkFns.post(rangeStart, rangeLength, this.children[childIndex], this, nodeType);
                    }
                }
                else {
                    walkFns.goSubtree = true;
                }
                return walkFns.done;
            };
            LineNode.prototype.skipChild = function (relativeStart, relativeLength, childIndex, walkFns, nodeType) {
                if (walkFns.pre && (!walkFns.done)) {
                    walkFns.pre(relativeStart, relativeLength, this.children[childIndex], this, nodeType);
                    walkFns.goSubtree = true;
                }
            };
            LineNode.prototype.walk = function (rangeStart, rangeLength, walkFns) {
                var childIndex = 0;
                var child = this.children[0];
                var childCharCount = child.charCount();
                var adjustedStart = rangeStart;
                while (adjustedStart >= childCharCount) {
                    this.skipChild(adjustedStart, rangeLength, childIndex, walkFns, CharRangeSection.PreStart);
                    adjustedStart -= childCharCount;
                    child = this.children[++childIndex];
                    childCharCount = child.charCount();
                }
                if ((adjustedStart + rangeLength) <= childCharCount) {
                    if (this.execWalk(adjustedStart, rangeLength, walkFns, childIndex, CharRangeSection.Entire)) {
                        return;
                    }
                }
                else {
                    if (this.execWalk(adjustedStart, childCharCount - adjustedStart, walkFns, childIndex, CharRangeSection.Start)) {
                        return;
                    }
                    var adjustedLength = rangeLength - (childCharCount - adjustedStart);
                    child = this.children[++childIndex];
                    childCharCount = child.charCount();
                    while (adjustedLength > childCharCount) {
                        if (this.execWalk(0, childCharCount, walkFns, childIndex, CharRangeSection.Mid)) {
                            return;
                        }
                        adjustedLength -= childCharCount;
                        child = this.children[++childIndex];
                        childCharCount = child.charCount();
                    }
                    if (adjustedLength > 0) {
                        if (this.execWalk(0, adjustedLength, walkFns, childIndex, CharRangeSection.End)) {
                            return;
                        }
                    }
                }
                if (walkFns.pre) {
                    var clen = this.children.length;
                    if (childIndex < (clen - 1)) {
                        for (var ej = childIndex + 1; ej < clen; ej++) {
                            this.skipChild(0, 0, ej, walkFns, CharRangeSection.PostEnd);
                        }
                    }
                }
            };
            LineNode.prototype.charOffsetToLineNumberAndPos = function (lineNumber, charOffset) {
                var childInfo = this.childFromCharOffset(lineNumber, charOffset);
                if (!childInfo.child) {
                    return {
                        line: lineNumber,
                        offset: charOffset
                    };
                }
                else if (childInfo.childIndex < this.children.length) {
                    if (childInfo.child.isLeaf()) {
                        return {
                            line: childInfo.lineNumber,
                            offset: childInfo.charOffset,
                            text: (childInfo.child).text,
                            leaf: (childInfo.child)
                        };
                    }
                    else {
                        var lineNode = (childInfo.child);
                        return lineNode.charOffsetToLineNumberAndPos(childInfo.lineNumber, childInfo.charOffset);
                    }
                }
                else {
                    var lineInfo = this.lineNumberToInfo(this.lineCount(), 0);
                    return { line: this.lineCount(), offset: lineInfo.leaf.charCount() };
                }
            };
            LineNode.prototype.lineNumberToInfo = function (lineNumber, charOffset) {
                var childInfo = this.childFromLineNumber(lineNumber, charOffset);
                if (!childInfo.child) {
                    return {
                        line: lineNumber,
                        offset: charOffset
                    };
                }
                else if (childInfo.child.isLeaf()) {
                    return {
                        line: lineNumber,
                        offset: childInfo.charOffset,
                        text: (childInfo.child).text,
                        leaf: (childInfo.child)
                    };
                }
                else {
                    var lineNode = (childInfo.child);
                    return lineNode.lineNumberToInfo(childInfo.relativeLineNumber, childInfo.charOffset);
                }
            };
            LineNode.prototype.childFromLineNumber = function (lineNumber, charOffset) {
                var child;
                var relativeLineNumber = lineNumber;
                for (var i = 0, len = this.children.length; i < len; i++) {
                    child = this.children[i];
                    var childLineCount = child.lineCount();
                    if (childLineCount >= relativeLineNumber) {
                        break;
                    }
                    else {
                        relativeLineNumber -= childLineCount;
                        charOffset += child.charCount();
                    }
                }
                return {
                    child: child,
                    childIndex: i,
                    relativeLineNumber: relativeLineNumber,
                    charOffset: charOffset
                };
            };
            LineNode.prototype.childFromCharOffset = function (lineNumber, charOffset) {
                var child;
                for (var i = 0, len = this.children.length; i < len; i++) {
                    child = this.children[i];
                    if (child.charCount() > charOffset) {
                        break;
                    }
                    else {
                        charOffset -= child.charCount();
                        lineNumber += child.lineCount();
                    }
                }
                return {
                    child: child,
                    childIndex: i,
                    charOffset: charOffset,
                    lineNumber: lineNumber
                };
            };
            LineNode.prototype.splitAfter = function (childIndex) {
                var splitNode;
                var clen = this.children.length;
                childIndex++;
                var endLength = childIndex;
                if (childIndex < clen) {
                    splitNode = new LineNode();
                    while (childIndex < clen) {
                        splitNode.add(this.children[childIndex++]);
                    }
                    splitNode.updateCounts();
                }
                this.children.length = endLength;
                return splitNode;
            };
            LineNode.prototype.remove = function (child) {
                var childIndex = this.findChildIndex(child);
                var clen = this.children.length;
                if (childIndex < (clen - 1)) {
                    for (var i = childIndex; i < (clen - 1); i++) {
                        this.children[i] = this.children[i + 1];
                    }
                }
                this.children.length--;
            };
            LineNode.prototype.findChildIndex = function (child) {
                var childIndex = 0;
                var clen = this.children.length;
                while ((this.children[childIndex] != child) && (childIndex < clen))
                    childIndex++;
                return childIndex;
            };
            LineNode.prototype.insertAt = function (child, nodes) {
                var childIndex = this.findChildIndex(child);
                var clen = this.children.length;
                var nodeCount = nodes.length;
                if ((clen < lineCollectionCapacity) && (childIndex == (clen - 1)) && (nodeCount == 1)) {
                    this.add(nodes[0]);
                    this.updateCounts();
                    return [];
                }
                else {
                    var shiftNode = this.splitAfter(childIndex);
                    var nodeIndex = 0;
                    childIndex++;
                    while ((childIndex < lineCollectionCapacity) && (nodeIndex < nodeCount)) {
                        this.children[childIndex++] = nodes[nodeIndex++];
                    }
                    var splitNodes = [];
                    var splitNodeCount = 0;
                    if (nodeIndex < nodeCount) {
                        splitNodeCount = Math.ceil((nodeCount - nodeIndex) / lineCollectionCapacity);
                        splitNodes = new Array(splitNodeCount);
                        var splitNodeIndex = 0;
                        for (var i = 0; i < splitNodeCount; i++) {
                            splitNodes[i] = new LineNode();
                        }
                        var splitNode = splitNodes[0];
                        while (nodeIndex < nodeCount) {
                            splitNode.add(nodes[nodeIndex++]);
                            if (splitNode.children.length == lineCollectionCapacity) {
                                splitNodeIndex++;
                                splitNode = splitNodes[splitNodeIndex];
                            }
                        }
                        for (i = splitNodes.length - 1; i >= 0; i--) {
                            if (splitNodes[i].children.length == 0) {
                                splitNodes.length--;
                            }
                        }
                    }
                    if (shiftNode) {
                        splitNodes[splitNodes.length] = shiftNode;
                    }
                    this.updateCounts();
                    for (i = 0; i < splitNodeCount; i++) {
                        splitNodes[i].updateCounts();
                    }
                    return splitNodes;
                }
            };
            LineNode.prototype.add = function (collection) {
                this.children[this.children.length] = collection;
                return (this.children.length < lineCollectionCapacity);
            };
            LineNode.prototype.charCount = function () {
                return this.totalChars;
            };
            LineNode.prototype.lineCount = function () {
                return this.totalLines;
            };
            return LineNode;
        })();
        var LineLeaf = (function () {
            function LineLeaf(text) {
                this.text = text;
            }
            LineLeaf.prototype.setUdata = function (data) {
                this.udata = data;
            };
            LineLeaf.prototype.getUdata = function () {
                return this.udata;
            };
            LineLeaf.prototype.isLeaf = function () {
                return true;
            };
            LineLeaf.prototype.walk = function (rangeStart, rangeLength, walkFns) {
                walkFns.leaf(rangeStart, rangeLength, this);
            };
            LineLeaf.prototype.charCount = function () {
                return this.text.length;
            };
            LineLeaf.prototype.lineCount = function () {
                return 1;
            };
            return LineLeaf;
        })();
    })(server = ts.server || (ts.server = {}));
})(ts || (ts = {}));
/// <reference path="node.d.ts" />
/// <reference path="session.ts" />
var ts;
(function (ts) {
    var server;
    (function (server) {
        var nodeproto = require('_debugger');
        var readline = require('readline');
        var path = require('path');
        var fs = require('fs');
        var rl = readline.createInterface({
            input: process.stdin,
            output: process.stdout,
            terminal: false
        });
        var Logger = (function () {
            function Logger(logFilename, level) {
                this.logFilename = logFilename;
                this.level = level;
                this.fd = -1;
                this.seq = 0;
                this.inGroup = false;
                this.firstInGroup = true;
            }
            Logger.padStringRight = function (str, padding) {
                return (str + padding).slice(0, padding.length);
            };
            Logger.prototype.close = function () {
                if (this.fd >= 0) {
                    fs.close(this.fd);
                }
            };
            Logger.prototype.perftrc = function (s) {
                this.msg(s, "Perf");
            };
            Logger.prototype.info = function (s) {
                this.msg(s, "Info");
            };
            Logger.prototype.startGroup = function () {
                this.inGroup = true;
                this.firstInGroup = true;
            };
            Logger.prototype.endGroup = function () {
                this.inGroup = false;
                this.seq++;
                this.firstInGroup = true;
            };
            Logger.prototype.loggingEnabled = function () {
                return !!this.logFilename;
            };
            Logger.prototype.isVerbose = function () {
                return this.loggingEnabled() && (this.level == "verbose");
            };
            Logger.prototype.msg = function (s, type) {
                if (type === void 0) { type = "Err"; }
                if (this.fd < 0) {
                    if (this.logFilename) {
                        this.fd = fs.openSync(this.logFilename, "w");
                    }
                }
                if (this.fd >= 0) {
                    s = s + "\n";
                    var prefix = Logger.padStringRight(type + " " + this.seq.toString(), "          ");
                    if (this.firstInGroup) {
                        s = prefix + s;
                        this.firstInGroup = false;
                    }
                    if (!this.inGroup) {
                        this.seq++;
                        this.firstInGroup = true;
                    }
                    var buf = new Buffer(s);
                    fs.writeSync(this.fd, buf, 0, buf.length, null);
                }
            };
            return Logger;
        })();
        var WatchedFileSet = (function () {
            function WatchedFileSet(interval, chunkSize) {
                if (interval === void 0) { interval = 2500; }
                if (chunkSize === void 0) { chunkSize = 30; }
                this.interval = interval;
                this.chunkSize = chunkSize;
                this.watchedFiles = [];
                this.nextFileToCheck = 0;
            }
            WatchedFileSet.copyListRemovingItem = function (item, list) {
                var copiedList = [];
                for (var i = 0, len = list.length; i < len; i++) {
                    if (list[i] != item) {
                        copiedList.push(list[i]);
                    }
                }
                return copiedList;
            };
            WatchedFileSet.getModifiedTime = function (fileName) {
                return fs.statSync(fileName).mtime;
            };
            WatchedFileSet.prototype.poll = function (checkedIndex) {
                var watchedFile = this.watchedFiles[checkedIndex];
                if (!watchedFile) {
                    return;
                }
                fs.stat(watchedFile.fileName, function (err, stats) {
                    if (err) {
                        watchedFile.callback(watchedFile.fileName);
                    }
                    else if (watchedFile.mtime.getTime() != stats.mtime.getTime()) {
                        watchedFile.mtime = WatchedFileSet.getModifiedTime(watchedFile.fileName);
                        watchedFile.callback(watchedFile.fileName);
                    }
                });
            };
            WatchedFileSet.prototype.startWatchTimer = function () {
                var _this = this;
                this.watchTimer = setInterval(function () {
                    var count = 0;
                    var nextToCheck = _this.nextFileToCheck;
                    var firstCheck = -1;
                    while ((count < _this.chunkSize) && (nextToCheck != firstCheck)) {
                        _this.poll(nextToCheck);
                        if (firstCheck < 0) {
                            firstCheck = nextToCheck;
                        }
                        nextToCheck++;
                        if (nextToCheck === _this.watchedFiles.length) {
                            nextToCheck = 0;
                        }
                        count++;
                    }
                    _this.nextFileToCheck = nextToCheck;
                }, this.interval);
            };
            WatchedFileSet.prototype.addFile = function (fileName, callback) {
                var file = {
                    fileName: fileName,
                    callback: callback,
                    mtime: WatchedFileSet.getModifiedTime(fileName)
                };
                this.watchedFiles.push(file);
                if (this.watchedFiles.length === 1) {
                    this.startWatchTimer();
                }
                return file;
            };
            WatchedFileSet.prototype.removeFile = function (file) {
                this.watchedFiles = WatchedFileSet.copyListRemovingItem(file, this.watchedFiles);
            };
            return WatchedFileSet;
        })();
        var IOSession = (function (_super) {
            __extends(IOSession, _super);
            function IOSession(host, logger) {
                _super.call(this, host, logger);
            }
            IOSession.prototype.exit = function () {
                this.projectService.log("Exiting...", "Info");
                this.projectService.closeLog();
                process.exit(0);
            };
            IOSession.prototype.listen = function () {
                var _this = this;
                rl.on('line', function (input) {
                    var message = input.trim();
                    _this.onMessage(message);
                });
                rl.on('close', function () {
                    _this.exit();
                });
            };
            return IOSession;
        })(server.Session);
        function parseLoggingEnvironmentString(logEnvStr) {
            var logEnv = {};
            var args = logEnvStr.split(' ');
            for (var i = 0, len = args.length; i < (len - 1); i += 2) {
                var option = args[i];
                var value = args[i + 1];
                if (option && value) {
                    switch (option) {
                        case "-file":
                            logEnv.file = value;
                            break;
                        case "-level":
                            logEnv.detailLevel = value;
                            break;
                    }
                }
            }
            return logEnv;
        }
        function createLoggerFromEnv() {
            var fileName = undefined;
            var detailLevel = "normal";
            var logEnvStr = process.env["TSS_LOG"];
            if (logEnvStr) {
                var logEnv = parseLoggingEnvironmentString(logEnvStr);
                if (logEnv.file) {
                    fileName = logEnv.file;
                }
                else {
                    fileName = __dirname + "/.log" + process.pid.toString();
                }
                if (logEnv.detailLevel) {
                    detailLevel = logEnv.detailLevel;
                }
            }
            return new Logger(fileName, detailLevel);
        }
        var logger = createLoggerFromEnv();
        var watchedFileSet = new WatchedFileSet();
        ts.sys.watchFile = function (fileName, callback) {
            var watchedFile = watchedFileSet.addFile(fileName, callback);
            return {
                close: function () { return watchedFileSet.removeFile(watchedFile); }
            };
        };
        var ioSession = new IOSession(ts.sys, logger);
        process.on('uncaughtException', function (err) {
            ioSession.logError(err, "unknown");
        });
        ioSession.listen();
    })(server = ts.server || (ts.server = {}));
})(ts || (ts = {}));