Add extract-editor-src with treeshaking task
This commit is contained in:
Alex Dima
parent
f07a19895b
commit
03103a4f66
1
.gitignore
vendored
1
.gitignore
vendored
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@ -6,6 +6,7 @@ node_modules/
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out/
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out-build/
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out-editor/
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out-editor-src/
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out-editor-esm/
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out-editor-min/
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out-monaco-editor-core/
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@ -75,6 +75,33 @@ function editorLoaderConfig() {
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const languages = i18n.defaultLanguages.concat([]); // i18n.defaultLanguages.concat(process.env.VSCODE_QUALITY !== 'stable' ? i18n.extraLanguages : []);
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gulp.task('clean-editor-src', util.rimraf('out-editor-src'));
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gulp.task('extract-editor-src', ['clean-editor-src'], function() {
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standalone.extractEditor({
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sourcesRoot: path.join(root, 'src'),
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entryPoints: [
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'vs/editor/editor.main',
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'vs/editor/editor.worker',
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// 'user',
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// 'user2',
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],
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libs: [
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`lib.d.ts`,
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`lib.es2015.collection.d.ts`
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],
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redirects: {
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'vs/base/browser/ui/octiconLabel/octiconLabel': 'vs/base/browser/ui/octiconLabel/octiconLabel.mock',
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},
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compilerOptions: {
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module: 2, // ModuleKind.AMD
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// moduleResolution: 'classic'
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},
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shakeLevel: 1, // 1-InnerFile, 2-ClassMembers
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importIgnorePattern: /^vs\/css!/,
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destRoot: path.join(root, 'out-editor-src')
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});
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});
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gulp.task('clean-optimized-editor', util.rimraf('out-editor'));
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gulp.task('optimize-editor', ['clean-optimized-editor', 'compile-client-build'], common.optimizeTask({
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entryPoints: editorEntryPoints,
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@ -229,7 +256,7 @@ gulp.task('editor-distro', ['clean-editor-distro', 'compile-editor-esm', 'minify
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});
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gulp.task('analyze-editor-distro', function () {
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// @ts-ignore
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// @ts-ignore
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var bundleInfo = require('../out-editor/bundleInfo.json');
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var graph = bundleInfo.graph;
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var bundles = bundleInfo.bundles;
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@ -7,9 +7,87 @@ Object.defineProperty(exports, "__esModule", { value: true });
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var ts = require("typescript");
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var fs = require("fs");
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var path = require("path");
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var tss = require("./treeshaking");
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var REPO_ROOT = path.join(__dirname, '../../');
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var SRC_DIR = path.join(REPO_ROOT, 'src');
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var OUT_EDITOR = path.join(REPO_ROOT, 'out-editor');
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var dirCache = {};
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function writeFile(filePath, contents) {
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function ensureDirs(dirPath) {
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if (dirCache[dirPath]) {
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return;
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}
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dirCache[dirPath] = true;
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ensureDirs(path.dirname(dirPath));
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if (fs.existsSync(dirPath)) {
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return;
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}
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fs.mkdirSync(dirPath);
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}
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ensureDirs(path.dirname(filePath));
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fs.writeFileSync(filePath, contents);
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}
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function extractEditor(options) {
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var result = tss.shake(options);
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for (var fileName in result) {
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if (result.hasOwnProperty(fileName)) {
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writeFile(path.join(options.destRoot, fileName), result[fileName]);
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}
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}
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var copied = {};
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var copyFile = function (fileName) {
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if (copied[fileName]) {
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return;
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}
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copied[fileName] = true;
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var srcPath = path.join(options.sourcesRoot, fileName);
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var dstPath = path.join(options.destRoot, fileName);
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fs.writeFileSync(dstPath, fs.readFileSync(srcPath));
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};
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var writeOutputFile = function (fileName, contents) {
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writeFile(path.join(options.destRoot, fileName), contents);
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};
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for (var fileName in result) {
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if (result.hasOwnProperty(fileName)) {
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var fileContents = result[fileName];
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var info = ts.preProcessFile(fileContents);
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for (var i = info.importedFiles.length - 1; i >= 0; i--) {
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var importedFileName = info.importedFiles[i].fileName;
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var importedFilePath = void 0;
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if (/^vs\/css!/.test(importedFileName)) {
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importedFilePath = importedFileName.substr('vs/css!'.length) + '.css';
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}
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else {
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importedFilePath = importedFileName;
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}
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if (/(^\.\/)|(^\.\.\/)/.test(importedFilePath)) {
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importedFilePath = path.join(path.dirname(fileName), importedFilePath);
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}
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if (/\.css$/.test(importedFilePath)) {
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transportCSS(importedFilePath, copyFile, writeOutputFile);
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}
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else {
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if (fs.existsSync(path.join(options.sourcesRoot, importedFilePath + '.js'))) {
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copyFile(importedFilePath + '.js');
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}
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}
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}
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}
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}
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[
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'tsconfig.json',
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'vs/css.build.js',
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'vs/css.d.ts',
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'vs/css.js',
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'vs/loader.js',
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'vs/monaco.d.ts',
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'vs/nls.build.js',
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'vs/nls.d.ts',
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'vs/nls.js',
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'vs/nls.mock.ts',
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].forEach(copyFile);
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}
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exports.extractEditor = extractEditor;
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function createESMSourcesAndResources(options) {
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var OUT_FOLDER = path.join(REPO_ROOT, options.outFolder);
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var OUT_RESOURCES_FOLDER = path.join(REPO_ROOT, options.outResourcesFolder);
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@ -94,7 +172,7 @@ function createESMSourcesAndResources(options) {
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options.entryPoints.forEach(function (entryPoint) { return enqueue(entryPoint); });
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while (queue.length > 0) {
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var module_1 = queue.shift();
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if (transportCSS(options, module_1, enqueue, write)) {
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if (transportCSS(module_1, enqueue, write)) {
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continue;
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}
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if (transportResource(options, module_1, enqueue, write)) {
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@ -171,7 +249,7 @@ function createESMSourcesAndResources(options) {
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fs.writeFileSync(path.join(OUT_FOLDER, 'vs/monaco.d.ts'), monacodts);
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}
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exports.createESMSourcesAndResources = createESMSourcesAndResources;
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function transportCSS(options, module, enqueue, write) {
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function transportCSS(module, enqueue, write) {
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if (!/\.css/.test(module)) {
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return false;
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}
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@ -179,10 +257,10 @@ function transportCSS(options, module, enqueue, write) {
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var fileContents = fs.readFileSync(filename).toString();
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var inlineResources = 'base64'; // see https://github.com/Microsoft/monaco-editor/issues/148
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var inlineResourcesLimit = 300000; //3000; // see https://github.com/Microsoft/monaco-editor/issues/336
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var newContents = _rewriteOrInlineUrls(filename, fileContents, inlineResources === 'base64', inlineResourcesLimit);
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var newContents = _rewriteOrInlineUrls(fileContents, inlineResources === 'base64', inlineResourcesLimit);
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write(module, newContents);
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return true;
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function _rewriteOrInlineUrls(originalFileFSPath, contents, forceBase64, inlineByteLimit) {
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function _rewriteOrInlineUrls(contents, forceBase64, inlineByteLimit) {
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return _replaceURL(contents, function (url) {
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var imagePath = path.join(path.dirname(module), url);
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var fileContents = fs.readFileSync(path.join(SRC_DIR, imagePath));
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@ -6,11 +6,94 @@
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import * as ts from 'typescript';
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import * as fs from 'fs';
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import * as path from 'path';
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import * as tss from './treeshaking';
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const REPO_ROOT = path.join(__dirname, '../../');
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const SRC_DIR = path.join(REPO_ROOT, 'src');
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const OUT_EDITOR = path.join(REPO_ROOT, 'out-editor');
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let dirCache: { [dir: string]: boolean; } = {};
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function writeFile(filePath: string, contents: string): void {
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function ensureDirs(dirPath: string): void {
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if (dirCache[dirPath]) {
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return;
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}
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dirCache[dirPath] = true;
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ensureDirs(path.dirname(dirPath));
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if (fs.existsSync(dirPath)) {
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return;
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}
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fs.mkdirSync(dirPath);
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}
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ensureDirs(path.dirname(filePath));
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fs.writeFileSync(filePath, contents);
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}
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export function extractEditor(options: tss.ITreeShakingOptions & { destRoot: string }): void {
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let result = tss.shake(options);
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for (let fileName in result) {
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if (result.hasOwnProperty(fileName)) {
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writeFile(path.join(options.destRoot, fileName), result[fileName]);
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}
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}
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let copied: { [fileName:string]: boolean; } = {};
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const copyFile = (fileName: string) => {
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if (copied[fileName]) {
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return;
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}
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copied[fileName] = true;
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const srcPath = path.join(options.sourcesRoot, fileName);
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const dstPath = path.join(options.destRoot, fileName);
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fs.writeFileSync(dstPath, fs.readFileSync(srcPath));
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};
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const writeOutputFile = (fileName: string, contents: string) => {
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writeFile(path.join(options.destRoot, fileName), contents);
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};
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for (let fileName in result) {
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if (result.hasOwnProperty(fileName)) {
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const fileContents = result[fileName];
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const info = ts.preProcessFile(fileContents);
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for (let i = info.importedFiles.length - 1; i >= 0; i--) {
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const importedFileName = info.importedFiles[i].fileName;
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let importedFilePath: string;
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if (/^vs\/css!/.test(importedFileName)) {
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importedFilePath = importedFileName.substr('vs/css!'.length) + '.css';
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} else {
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importedFilePath = importedFileName;
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}
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if (/(^\.\/)|(^\.\.\/)/.test(importedFilePath)) {
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importedFilePath = path.join(path.dirname(fileName), importedFilePath);
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}
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if (/\.css$/.test(importedFilePath)) {
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transportCSS(importedFilePath, copyFile, writeOutputFile);
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} else {
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if (fs.existsSync(path.join(options.sourcesRoot, importedFilePath + '.js'))) {
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copyFile(importedFilePath + '.js');
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}
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}
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}
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}
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}
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[
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'tsconfig.json',
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'vs/css.build.js',
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'vs/css.d.ts',
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'vs/css.js',
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'vs/loader.js',
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'vs/monaco.d.ts',
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'vs/nls.build.js',
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'vs/nls.d.ts',
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'vs/nls.js',
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'vs/nls.mock.ts',
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].forEach(copyFile);
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}
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export interface IOptions {
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entryPoints: string[];
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outFolder: string;
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@ -111,7 +194,7 @@ export function createESMSourcesAndResources(options: IOptions): void {
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while (queue.length > 0) {
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const module = queue.shift();
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if (transportCSS(options, module, enqueue, write)) {
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if (transportCSS(module, enqueue, write)) {
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continue;
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}
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if (transportResource(options, module, enqueue, write)) {
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@ -198,7 +281,7 @@ export function createESMSourcesAndResources(options: IOptions): void {
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}
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function transportCSS(options: IOptions, module: string, enqueue: (module: string) => void, write: (path: string, contents: string | Buffer) => void): boolean {
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function transportCSS(module: string, enqueue: (module: string) => void, write: (path: string, contents: string | Buffer) => void): boolean {
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if (!/\.css/.test(module)) {
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return false;
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@ -209,11 +292,11 @@ function transportCSS(options: IOptions, module: string, enqueue: (module: strin
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const inlineResources = 'base64'; // see https://github.com/Microsoft/monaco-editor/issues/148
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const inlineResourcesLimit = 300000;//3000; // see https://github.com/Microsoft/monaco-editor/issues/336
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const newContents = _rewriteOrInlineUrls(filename, fileContents, inlineResources === 'base64', inlineResourcesLimit);
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const newContents = _rewriteOrInlineUrls(fileContents, inlineResources === 'base64', inlineResourcesLimit);
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write(module, newContents);
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return true;
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function _rewriteOrInlineUrls(originalFileFSPath: string, contents: string, forceBase64: boolean, inlineByteLimit: number): string {
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function _rewriteOrInlineUrls(contents: string, forceBase64: boolean, inlineByteLimit: number): string {
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return _replaceURL(contents, (url) => {
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let imagePath = path.join(path.dirname(module), url);
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let fileContents = fs.readFileSync(path.join(SRC_DIR, imagePath));
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676
build/lib/treeshaking.js
Normal file
676
build/lib/treeshaking.js
Normal file
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@ -0,0 +1,676 @@
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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'use strict';
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Object.defineProperty(exports, "__esModule", { value: true });
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var fs = require("fs");
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var path = require("path");
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var ts = require("typescript");
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var TYPESCRIPT_LIB_FOLDER = path.dirname(require.resolve('typescript/lib/lib.d.ts'));
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var ShakeLevel;
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(function (ShakeLevel) {
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ShakeLevel[ShakeLevel["Files"] = 0] = "Files";
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ShakeLevel[ShakeLevel["InnerFile"] = 1] = "InnerFile";
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ShakeLevel[ShakeLevel["ClassMembers"] = 2] = "ClassMembers";
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})(ShakeLevel = exports.ShakeLevel || (exports.ShakeLevel = {}));
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function shake(options) {
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var languageService = createTypeScriptLanguageService(options);
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markNodes(languageService, options.shakeLevel, options.entryPoints.map(function (moduleId) { return moduleId + '.ts'; }), options.importIgnorePattern);
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return generateResult(languageService, options.shakeLevel);
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}
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exports.shake = shake;
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//#region Discovery, LanguageService & Setup
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function createTypeScriptLanguageService(options) {
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// Discover referenced files
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var FILES = discoverAndReadFiles(options);
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// Resolve libs
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var RESOLVED_LIBS = {};
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options.libs.forEach(function (filename) {
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var filepath = path.join(TYPESCRIPT_LIB_FOLDER, filename);
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RESOLVED_LIBS["defaultLib:" + filename] = fs.readFileSync(filepath).toString();
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});
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var host = new TypeScriptLanguageServiceHost(RESOLVED_LIBS, FILES, options.compilerOptions);
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return ts.createLanguageService(host);
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}
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/**
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* Read imports and follow them until all files have been handled
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*/
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function discoverAndReadFiles(options) {
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var FILES = {};
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var in_queue = Object.create(null);
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var queue = [];
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var enqueue = function (moduleId) {
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if (in_queue[moduleId]) {
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return;
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}
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in_queue[moduleId] = true;
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queue.push(moduleId);
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};
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options.entryPoints.forEach(function (entryPoint) { return enqueue(entryPoint); });
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while (queue.length > 0) {
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var moduleId = queue.shift();
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var dts_filename = path.join(options.sourcesRoot, moduleId + '.d.ts');
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if (fs.existsSync(dts_filename)) {
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var dts_filecontents = fs.readFileSync(dts_filename).toString();
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FILES[moduleId + '.d.ts'] = dts_filecontents;
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continue;
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}
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var ts_filename = void 0;
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if (options.redirects[moduleId]) {
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ts_filename = path.join(options.sourcesRoot, options.redirects[moduleId] + '.ts');
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}
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else {
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ts_filename = path.join(options.sourcesRoot, moduleId + '.ts');
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}
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var ts_filecontents = fs.readFileSync(ts_filename).toString();
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var info = ts.preProcessFile(ts_filecontents);
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for (var i = info.importedFiles.length - 1; i >= 0; i--) {
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var importedFileName = info.importedFiles[i].fileName;
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if (options.importIgnorePattern.test(importedFileName)) {
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// Ignore vs/css! imports
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continue;
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}
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var importedModuleId = importedFileName;
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if (/(^\.\/)|(^\.\.\/)/.test(importedModuleId)) {
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importedModuleId = path.join(path.dirname(moduleId), importedModuleId);
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}
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enqueue(importedModuleId);
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}
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FILES[moduleId + '.ts'] = ts_filecontents;
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}
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return FILES;
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}
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/**
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* A TypeScript language service host
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*/
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var TypeScriptLanguageServiceHost = /** @class */ (function () {
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function TypeScriptLanguageServiceHost(libs, files, compilerOptions) {
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this._libs = libs;
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this._files = files;
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this._compilerOptions = compilerOptions;
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}
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// --- language service host ---------------
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TypeScriptLanguageServiceHost.prototype.getCompilationSettings = function () {
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return this._compilerOptions;
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};
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TypeScriptLanguageServiceHost.prototype.getScriptFileNames = function () {
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return ([]
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.concat(Object.keys(this._libs))
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.concat(Object.keys(this._files)));
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};
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TypeScriptLanguageServiceHost.prototype.getScriptVersion = function (fileName) {
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return '1';
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};
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TypeScriptLanguageServiceHost.prototype.getProjectVersion = function () {
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return '1';
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};
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TypeScriptLanguageServiceHost.prototype.getScriptSnapshot = function (fileName) {
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if (this._files.hasOwnProperty(fileName)) {
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return ts.ScriptSnapshot.fromString(this._files[fileName]);
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}
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else if (this._libs.hasOwnProperty(fileName)) {
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return ts.ScriptSnapshot.fromString(this._libs[fileName]);
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}
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else {
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return ts.ScriptSnapshot.fromString('');
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}
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};
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TypeScriptLanguageServiceHost.prototype.getScriptKind = function (fileName) {
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return ts.ScriptKind.TS;
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};
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TypeScriptLanguageServiceHost.prototype.getCurrentDirectory = function () {
|
||||
return '';
|
||||
};
|
||||
TypeScriptLanguageServiceHost.prototype.getDefaultLibFileName = function (options) {
|
||||
return 'defaultLib:lib.d.ts';
|
||||
};
|
||||
TypeScriptLanguageServiceHost.prototype.isDefaultLibFileName = function (fileName) {
|
||||
return fileName === this.getDefaultLibFileName(this._compilerOptions);
|
||||
};
|
||||
return TypeScriptLanguageServiceHost;
|
||||
}());
|
||||
//#endregion
|
||||
//#region Tree Shaking
|
||||
var NodeColor;
|
||||
(function (NodeColor) {
|
||||
NodeColor[NodeColor["White"] = 0] = "White";
|
||||
NodeColor[NodeColor["Gray"] = 1] = "Gray";
|
||||
NodeColor[NodeColor["Black"] = 2] = "Black";
|
||||
})(NodeColor || (NodeColor = {}));
|
||||
function getColor(node) {
|
||||
return node.$$$color || 0 /* White */;
|
||||
}
|
||||
function setColor(node, color) {
|
||||
node.$$$color = color;
|
||||
}
|
||||
function nodeOrParentIsBlack(node) {
|
||||
while (node) {
|
||||
var color = getColor(node);
|
||||
if (color === 2 /* Black */) {
|
||||
return true;
|
||||
}
|
||||
node = node.parent;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
function nodeOrChildIsBlack(node) {
|
||||
if (getColor(node) === 2 /* Black */) {
|
||||
return true;
|
||||
}
|
||||
for (var _i = 0, _a = node.getChildren(); _i < _a.length; _i++) {
|
||||
var child = _a[_i];
|
||||
if (nodeOrChildIsBlack(child)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
function markNodes(languageService, shakeLevel, entryPointFiles, importIgnorePattern) {
|
||||
var program = languageService.getProgram();
|
||||
if (shakeLevel === 0 /* Files */) {
|
||||
// Mark all source files Black
|
||||
program.getSourceFiles().forEach(function (sourceFile) {
|
||||
setColor(sourceFile, 2 /* Black */);
|
||||
});
|
||||
return;
|
||||
}
|
||||
var black_queue = [];
|
||||
var gray_queue = [];
|
||||
var sourceFilesLoaded = {};
|
||||
function enqueueTopLevelModuleStatements(sourceFile) {
|
||||
sourceFile.forEachChild(function (node) {
|
||||
if (ts.isImportDeclaration(node)) {
|
||||
if (!node.importClause && ts.isStringLiteral(node.moduleSpecifier)) {
|
||||
setColor(node, 2 /* Black */);
|
||||
enqueueImport(node, node.moduleSpecifier.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
if (ts.isExportDeclaration(node)) {
|
||||
if (ts.isStringLiteral(node.moduleSpecifier)) {
|
||||
setColor(node, 2 /* Black */);
|
||||
enqueueImport(node, node.moduleSpecifier.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
if (ts.isExpressionStatement(node)
|
||||
|| ts.isIfStatement(node)
|
||||
|| ts.isIterationStatement(node, true)
|
||||
|| ts.isExportAssignment(node)) {
|
||||
enqueue_black(node);
|
||||
}
|
||||
if (ts.isImportEqualsDeclaration(node)) {
|
||||
if (/export/.test(node.getFullText(sourceFile))) {
|
||||
// e.g. "export import Severity = BaseSeverity;"
|
||||
enqueue_black(node);
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
function enqueue_gray(node) {
|
||||
if (nodeOrParentIsBlack(node) || getColor(node) === 1 /* Gray */) {
|
||||
return;
|
||||
}
|
||||
setColor(node, 1 /* Gray */);
|
||||
gray_queue.push(node);
|
||||
}
|
||||
function enqueue_black(node) {
|
||||
var previousColor = getColor(node);
|
||||
if (previousColor === 2 /* Black */) {
|
||||
return;
|
||||
}
|
||||
if (previousColor === 1 /* Gray */) {
|
||||
// remove from gray queue
|
||||
gray_queue.splice(gray_queue.indexOf(node), 1);
|
||||
setColor(node, 0 /* White */);
|
||||
// add to black queue
|
||||
enqueue_black(node);
|
||||
// // move from one queue to the other
|
||||
// black_queue.push(node);
|
||||
// setColor(node, NodeColor.Black);
|
||||
return;
|
||||
}
|
||||
if (nodeOrParentIsBlack(node)) {
|
||||
return;
|
||||
}
|
||||
var fileName = node.getSourceFile().fileName;
|
||||
if (/^defaultLib:/.test(fileName) || /\.d\.ts$/.test(fileName)) {
|
||||
setColor(node, 2 /* Black */);
|
||||
return;
|
||||
}
|
||||
var sourceFile = node.getSourceFile();
|
||||
if (!sourceFilesLoaded[sourceFile.fileName]) {
|
||||
sourceFilesLoaded[sourceFile.fileName] = true;
|
||||
enqueueTopLevelModuleStatements(sourceFile);
|
||||
}
|
||||
if (ts.isSourceFile(node)) {
|
||||
return;
|
||||
}
|
||||
setColor(node, 2 /* Black */);
|
||||
black_queue.push(node);
|
||||
if (shakeLevel === 2 /* ClassMembers */ && (ts.isMethodDeclaration(node) || ts.isMethodSignature(node) || ts.isPropertySignature(node) || ts.isGetAccessor(node) || ts.isSetAccessor(node))) {
|
||||
var references = languageService.getReferencesAtPosition(node.getSourceFile().fileName, node.name.pos + node.name.getLeadingTriviaWidth());
|
||||
if (references) {
|
||||
for (var i = 0, len = references.length; i < len; i++) {
|
||||
var reference = references[i];
|
||||
var referenceSourceFile = program.getSourceFile(reference.fileName);
|
||||
var referenceNode = getTokenAtPosition(referenceSourceFile, reference.textSpan.start, false, false);
|
||||
if (ts.isMethodDeclaration(referenceNode.parent)
|
||||
|| ts.isPropertyDeclaration(referenceNode.parent)
|
||||
|| ts.isGetAccessor(referenceNode.parent)
|
||||
|| ts.isSetAccessor(referenceNode.parent)) {
|
||||
enqueue_gray(referenceNode.parent);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
function enqueueFile(filename) {
|
||||
var sourceFile = program.getSourceFile(filename);
|
||||
if (!sourceFile) {
|
||||
console.warn("Cannot find source file " + filename);
|
||||
return;
|
||||
}
|
||||
enqueue_black(sourceFile);
|
||||
}
|
||||
function enqueueImport(node, importText) {
|
||||
if (importIgnorePattern.test(importText)) {
|
||||
// this import should be ignored
|
||||
return;
|
||||
}
|
||||
var nodeSourceFile = node.getSourceFile();
|
||||
var fullPath;
|
||||
if (/(^\.\/)|(^\.\.\/)/.test(importText)) {
|
||||
fullPath = path.join(path.dirname(nodeSourceFile.fileName), importText) + '.ts';
|
||||
}
|
||||
else {
|
||||
fullPath = importText + '.ts';
|
||||
}
|
||||
enqueueFile(fullPath);
|
||||
}
|
||||
entryPointFiles.forEach(function (filename) { return enqueueFile(filename); });
|
||||
var step = 0;
|
||||
var checker = program.getTypeChecker();
|
||||
var _loop_1 = function () {
|
||||
++step;
|
||||
var node = void 0;
|
||||
if (step % 100 === 0) {
|
||||
console.log(step + "/" + (step + black_queue.length + gray_queue.length) + " (" + black_queue.length + ", " + gray_queue.length + ")");
|
||||
}
|
||||
if (black_queue.length === 0) {
|
||||
for (var i = 0; i < gray_queue.length; i++) {
|
||||
var node_1 = gray_queue[i];
|
||||
var nodeParent = node_1.parent;
|
||||
if ((ts.isClassDeclaration(nodeParent) || ts.isInterfaceDeclaration(nodeParent)) && nodeOrChildIsBlack(nodeParent)) {
|
||||
gray_queue.splice(i, 1);
|
||||
black_queue.push(node_1);
|
||||
setColor(node_1, 2 /* Black */);
|
||||
i--;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (black_queue.length > 0) {
|
||||
node = black_queue.shift();
|
||||
}
|
||||
else {
|
||||
return "break";
|
||||
}
|
||||
var nodeSourceFile = node.getSourceFile();
|
||||
var loop = function (node) {
|
||||
var _a = getRealNodeSymbol(checker, node), symbol = _a[0], symbolImportNode = _a[1];
|
||||
if (symbolImportNode) {
|
||||
setColor(symbolImportNode, 2 /* Black */);
|
||||
}
|
||||
if (symbol && !nodeIsInItsOwnDeclaration(nodeSourceFile, node, symbol)) {
|
||||
for (var i = 0, len = symbol.declarations.length; i < len; i++) {
|
||||
var declaration = symbol.declarations[i];
|
||||
if (ts.isSourceFile(declaration)) {
|
||||
// Do not enqueue full source files
|
||||
// (they can be the declaration of a module import)
|
||||
continue;
|
||||
}
|
||||
if (shakeLevel === 2 /* ClassMembers */ && (ts.isClassDeclaration(declaration) || ts.isInterfaceDeclaration(declaration))) {
|
||||
enqueue_black(declaration.name);
|
||||
for (var j = 0; j < declaration.members.length; j++) {
|
||||
var member = declaration.members[j];
|
||||
var memberName = member.name ? member.name.getText() : null;
|
||||
if (ts.isConstructorDeclaration(member)
|
||||
|| ts.isConstructSignatureDeclaration(member)
|
||||
|| ts.isIndexSignatureDeclaration(member)
|
||||
|| ts.isCallSignatureDeclaration(member)
|
||||
|| memberName === 'toJSON'
|
||||
|| memberName === 'toString'
|
||||
|| memberName === 'dispose' // TODO: keeping all `dispose` methods
|
||||
) {
|
||||
enqueue_black(member);
|
||||
}
|
||||
}
|
||||
// queue the heritage clauses
|
||||
if (declaration.heritageClauses) {
|
||||
for (var _i = 0, _b = declaration.heritageClauses; _i < _b.length; _i++) {
|
||||
var heritageClause = _b[_i];
|
||||
enqueue_black(heritageClause);
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
enqueue_black(declaration);
|
||||
}
|
||||
}
|
||||
}
|
||||
node.forEachChild(loop);
|
||||
};
|
||||
node.forEachChild(loop);
|
||||
};
|
||||
while (black_queue.length > 0 || gray_queue.length > 0) {
|
||||
var state_1 = _loop_1();
|
||||
if (state_1 === "break")
|
||||
break;
|
||||
}
|
||||
}
|
||||
function nodeIsInItsOwnDeclaration(nodeSourceFile, node, symbol) {
|
||||
for (var i = 0, len = symbol.declarations.length; i < len; i++) {
|
||||
var declaration = symbol.declarations[i];
|
||||
var declarationSourceFile = declaration.getSourceFile();
|
||||
if (nodeSourceFile === declarationSourceFile) {
|
||||
if (declaration.pos <= node.pos && node.end <= declaration.end) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
function generateResult(languageService, shakeLevel) {
|
||||
var program = languageService.getProgram();
|
||||
var result = {};
|
||||
var writeFile = function (filePath, contents) {
|
||||
result[filePath] = contents;
|
||||
};
|
||||
program.getSourceFiles().forEach(function (sourceFile) {
|
||||
var fileName = sourceFile.fileName;
|
||||
if (/^defaultLib:/.test(fileName)) {
|
||||
return;
|
||||
}
|
||||
var destination = fileName;
|
||||
if (/\.d\.ts$/.test(fileName)) {
|
||||
if (nodeOrChildIsBlack(sourceFile)) {
|
||||
writeFile(destination, sourceFile.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
var text = sourceFile.text;
|
||||
var result = '';
|
||||
function keep(node) {
|
||||
result += text.substring(node.pos, node.end);
|
||||
}
|
||||
function write(data) {
|
||||
result += data;
|
||||
}
|
||||
function writeMarkedNodes(node) {
|
||||
if (getColor(node) === 2 /* Black */) {
|
||||
return keep(node);
|
||||
}
|
||||
// Always keep certain top-level statements
|
||||
if (ts.isSourceFile(node.parent)) {
|
||||
if (ts.isExpressionStatement(node) && ts.isStringLiteral(node.expression) && node.expression.text === 'use strict') {
|
||||
return keep(node);
|
||||
}
|
||||
if (ts.isVariableStatement(node) && nodeOrChildIsBlack(node)) {
|
||||
return keep(node);
|
||||
}
|
||||
}
|
||||
// Keep the entire import in import * as X cases
|
||||
if (ts.isImportDeclaration(node)) {
|
||||
if (node.importClause && node.importClause.namedBindings) {
|
||||
if (ts.isNamespaceImport(node.importClause.namedBindings)) {
|
||||
if (getColor(node.importClause.namedBindings) === 2 /* Black */) {
|
||||
return keep(node);
|
||||
}
|
||||
}
|
||||
else {
|
||||
var survivingImports = [];
|
||||
for (var i = 0; i < node.importClause.namedBindings.elements.length; i++) {
|
||||
var importNode = node.importClause.namedBindings.elements[i];
|
||||
if (getColor(importNode) === 2 /* Black */) {
|
||||
survivingImports.push(importNode.getFullText(sourceFile));
|
||||
}
|
||||
}
|
||||
var leadingTriviaWidth = node.getLeadingTriviaWidth();
|
||||
var leadingTrivia = sourceFile.text.substr(node.pos, leadingTriviaWidth);
|
||||
if (survivingImports.length > 0) {
|
||||
if (node.importClause && getColor(node.importClause) === 2 /* Black */) {
|
||||
return write(leadingTrivia + "import " + node.importClause.name.text + ", {" + survivingImports.join(',') + " } from" + node.moduleSpecifier.getFullText(sourceFile) + ";");
|
||||
}
|
||||
return write(leadingTrivia + "import {" + survivingImports.join(',') + " } from" + node.moduleSpecifier.getFullText(sourceFile) + ";");
|
||||
}
|
||||
else {
|
||||
if (node.importClause && getColor(node.importClause) === 2 /* Black */) {
|
||||
return write(leadingTrivia + "import " + node.importClause.name.text + " from" + node.moduleSpecifier.getFullText(sourceFile) + ";");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
if (node.importClause && getColor(node.importClause) === 2 /* Black */) {
|
||||
return keep(node);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (shakeLevel === 2 /* ClassMembers */ && (ts.isClassDeclaration(node) || ts.isInterfaceDeclaration(node)) && nodeOrChildIsBlack(node)) {
|
||||
var toWrite = node.getFullText();
|
||||
for (var i = node.members.length - 1; i >= 0; i--) {
|
||||
var member = node.members[i];
|
||||
if (getColor(member) === 2 /* Black */) {
|
||||
// keep method
|
||||
continue;
|
||||
}
|
||||
if (/^_(.*)Brand$/.test(member.name.getText())) {
|
||||
// TODO: keep all members ending with `Brand`...
|
||||
continue;
|
||||
}
|
||||
var pos = member.pos - node.pos;
|
||||
var end = member.end - node.pos;
|
||||
toWrite = toWrite.substring(0, pos) + toWrite.substring(end);
|
||||
}
|
||||
return write(toWrite);
|
||||
}
|
||||
if (ts.isFunctionDeclaration(node)) {
|
||||
// Do not go inside functions if they haven't been marked
|
||||
return;
|
||||
}
|
||||
node.forEachChild(writeMarkedNodes);
|
||||
}
|
||||
if (getColor(sourceFile) !== 2 /* Black */) {
|
||||
if (!nodeOrChildIsBlack(sourceFile)) {
|
||||
// none of the elements are reachable => don't write this file at all!
|
||||
return;
|
||||
}
|
||||
sourceFile.forEachChild(writeMarkedNodes);
|
||||
result += sourceFile.endOfFileToken.getFullText(sourceFile);
|
||||
}
|
||||
else {
|
||||
result = text;
|
||||
}
|
||||
writeFile(destination, result);
|
||||
});
|
||||
return result;
|
||||
}
|
||||
//#endregion
|
||||
//#region Utils
|
||||
/**
|
||||
* Returns the node's symbol and the `import` node (if the symbol resolved from a different module)
|
||||
*/
|
||||
function getRealNodeSymbol(checker, node) {
|
||||
/**
|
||||
* Returns the containing object literal property declaration given a possible name node, e.g. "a" in x = { "a": 1 }
|
||||
*/
|
||||
/* @internal */
|
||||
function getContainingObjectLiteralElement(node) {
|
||||
switch (node.kind) {
|
||||
case ts.SyntaxKind.StringLiteral:
|
||||
case ts.SyntaxKind.NumericLiteral:
|
||||
if (node.parent.kind === ts.SyntaxKind.ComputedPropertyName) {
|
||||
return ts.isObjectLiteralElement(node.parent.parent) ? node.parent.parent : undefined;
|
||||
}
|
||||
// falls through
|
||||
case ts.SyntaxKind.Identifier:
|
||||
return ts.isObjectLiteralElement(node.parent) &&
|
||||
(node.parent.parent.kind === ts.SyntaxKind.ObjectLiteralExpression || node.parent.parent.kind === ts.SyntaxKind.JsxAttributes) &&
|
||||
node.parent.name === node ? node.parent : undefined;
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
function getPropertySymbolsFromType(type, propName) {
|
||||
function getTextOfPropertyName(name) {
|
||||
function isStringOrNumericLiteral(node) {
|
||||
var kind = node.kind;
|
||||
return kind === ts.SyntaxKind.StringLiteral
|
||||
|| kind === ts.SyntaxKind.NumericLiteral;
|
||||
}
|
||||
switch (name.kind) {
|
||||
case ts.SyntaxKind.Identifier:
|
||||
return name.text;
|
||||
case ts.SyntaxKind.StringLiteral:
|
||||
case ts.SyntaxKind.NumericLiteral:
|
||||
return name.text;
|
||||
case ts.SyntaxKind.ComputedPropertyName:
|
||||
return isStringOrNumericLiteral(name.expression) ? name.expression.text : undefined;
|
||||
}
|
||||
}
|
||||
var name = getTextOfPropertyName(propName);
|
||||
if (name && type) {
|
||||
var result = [];
|
||||
var symbol_1 = type.getProperty(name);
|
||||
if (type.flags & ts.TypeFlags.Union) {
|
||||
for (var _i = 0, _a = type.types; _i < _a.length; _i++) {
|
||||
var t = _a[_i];
|
||||
var symbol_2 = t.getProperty(name);
|
||||
if (symbol_2) {
|
||||
result.push(symbol_2);
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
if (symbol_1) {
|
||||
result.push(symbol_1);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
function getPropertySymbolsFromContextualType(typeChecker, node) {
|
||||
var objectLiteral = node.parent;
|
||||
var contextualType = typeChecker.getContextualType(objectLiteral);
|
||||
return getPropertySymbolsFromType(contextualType, node.name);
|
||||
}
|
||||
// Go to the original declaration for cases:
|
||||
//
|
||||
// (1) when the aliased symbol was declared in the location(parent).
|
||||
// (2) when the aliased symbol is originating from an import.
|
||||
//
|
||||
function shouldSkipAlias(node, declaration) {
|
||||
if (node.kind !== ts.SyntaxKind.Identifier) {
|
||||
return false;
|
||||
}
|
||||
if (node.parent === declaration) {
|
||||
return true;
|
||||
}
|
||||
switch (declaration.kind) {
|
||||
case ts.SyntaxKind.ImportClause:
|
||||
case ts.SyntaxKind.ImportEqualsDeclaration:
|
||||
return true;
|
||||
case ts.SyntaxKind.ImportSpecifier:
|
||||
return declaration.parent.kind === ts.SyntaxKind.NamedImports;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
if (!ts.isShorthandPropertyAssignment(node)) {
|
||||
if (node.getChildCount() !== 0) {
|
||||
return [null, null];
|
||||
}
|
||||
}
|
||||
var symbol = checker.getSymbolAtLocation(node);
|
||||
var importNode = null;
|
||||
if (symbol && symbol.flags & ts.SymbolFlags.Alias && shouldSkipAlias(node, symbol.declarations[0])) {
|
||||
var aliased = checker.getAliasedSymbol(symbol);
|
||||
if (aliased.declarations) {
|
||||
// We should mark the import as visited
|
||||
importNode = symbol.declarations[0];
|
||||
symbol = aliased;
|
||||
}
|
||||
}
|
||||
if (symbol) {
|
||||
// Because name in short-hand property assignment has two different meanings: property name and property value,
|
||||
// using go-to-definition at such position should go to the variable declaration of the property value rather than
|
||||
// go to the declaration of the property name (in this case stay at the same position). However, if go-to-definition
|
||||
// is performed at the location of property access, we would like to go to definition of the property in the short-hand
|
||||
// assignment. This case and others are handled by the following code.
|
||||
if (node.parent.kind === ts.SyntaxKind.ShorthandPropertyAssignment) {
|
||||
symbol = checker.getShorthandAssignmentValueSymbol(symbol.valueDeclaration);
|
||||
}
|
||||
// If the node is the name of a BindingElement within an ObjectBindingPattern instead of just returning the
|
||||
// declaration the symbol (which is itself), we should try to get to the original type of the ObjectBindingPattern
|
||||
// and return the property declaration for the referenced property.
|
||||
// For example:
|
||||
// import('./foo').then(({ b/*goto*/ar }) => undefined); => should get use to the declaration in file "./foo"
|
||||
//
|
||||
// function bar<T>(onfulfilled: (value: T) => void) { //....}
|
||||
// interface Test {
|
||||
// pr/*destination*/op1: number
|
||||
// }
|
||||
// bar<Test>(({pr/*goto*/op1})=>{});
|
||||
if (ts.isPropertyName(node) && ts.isBindingElement(node.parent) && ts.isObjectBindingPattern(node.parent.parent) &&
|
||||
(node === (node.parent.propertyName || node.parent.name))) {
|
||||
var type = checker.getTypeAtLocation(node.parent.parent);
|
||||
if (type) {
|
||||
var propSymbols = getPropertySymbolsFromType(type, node);
|
||||
if (propSymbols) {
|
||||
symbol = propSymbols[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
// If the current location we want to find its definition is in an object literal, try to get the contextual type for the
|
||||
// object literal, lookup the property symbol in the contextual type, and use this for goto-definition.
|
||||
// For example
|
||||
// interface Props{
|
||||
// /*first*/prop1: number
|
||||
// prop2: boolean
|
||||
// }
|
||||
// function Foo(arg: Props) {}
|
||||
// Foo( { pr/*1*/op1: 10, prop2: false })
|
||||
var element = getContainingObjectLiteralElement(node);
|
||||
if (element && checker.getContextualType(element.parent)) {
|
||||
var propertySymbols = getPropertySymbolsFromContextualType(checker, element);
|
||||
if (propertySymbols) {
|
||||
symbol = propertySymbols[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
if (symbol && symbol.declarations) {
|
||||
return [symbol, importNode];
|
||||
}
|
||||
return [null, null];
|
||||
}
|
||||
/** Get the token whose text contains the position */
|
||||
function getTokenAtPosition(sourceFile, position, allowPositionInLeadingTrivia, includeEndPosition) {
|
||||
var current = sourceFile;
|
||||
outer: while (true) {
|
||||
// find the child that contains 'position'
|
||||
for (var _i = 0, _a = current.getChildren(); _i < _a.length; _i++) {
|
||||
var child = _a[_i];
|
||||
var start = allowPositionInLeadingTrivia ? child.getFullStart() : child.getStart(sourceFile, /*includeJsDoc*/ true);
|
||||
if (start > position) {
|
||||
// If this child begins after position, then all subsequent children will as well.
|
||||
break;
|
||||
}
|
||||
var end = child.getEnd();
|
||||
if (position < end || (position === end && (child.kind === ts.SyntaxKind.EndOfFileToken || includeEndPosition))) {
|
||||
current = child;
|
||||
continue outer;
|
||||
}
|
||||
}
|
||||
return current;
|
||||
}
|
||||
}
|
||||
806
build/lib/treeshaking.ts
Normal file
806
build/lib/treeshaking.ts
Normal file
|
|
@ -0,0 +1,806 @@
|
|||
/*---------------------------------------------------------------------------------------------
|
||||
* Copyright (c) Microsoft Corporation. All rights reserved.
|
||||
* Licensed under the MIT License. See License.txt in the project root for license information.
|
||||
*--------------------------------------------------------------------------------------------*/
|
||||
|
||||
'use strict';
|
||||
|
||||
import * as fs from 'fs';
|
||||
import * as path from 'path';
|
||||
import * as ts from 'typescript';
|
||||
|
||||
const TYPESCRIPT_LIB_FOLDER = path.dirname(require.resolve('typescript/lib/lib.d.ts'));
|
||||
|
||||
export const enum ShakeLevel {
|
||||
Files = 0,
|
||||
InnerFile = 1,
|
||||
ClassMembers = 2
|
||||
}
|
||||
|
||||
export interface ITreeShakingOptions {
|
||||
/**
|
||||
* The full path to the root where sources are.
|
||||
*/
|
||||
sourcesRoot: string;
|
||||
/**
|
||||
* Module ids.
|
||||
* e.g. `vs/editor/editor.main` or `index`
|
||||
*/
|
||||
entryPoints: string[];
|
||||
/**
|
||||
* TypeScript libs.
|
||||
* e.g. `lib.d.ts`, `lib.es2015.collection.d.ts`
|
||||
*/
|
||||
libs: string[];
|
||||
/**
|
||||
* TypeScript compiler options.
|
||||
*/
|
||||
compilerOptions: ts.CompilerOptions;
|
||||
/**
|
||||
* The shake level to perform.
|
||||
*/
|
||||
shakeLevel: ShakeLevel;
|
||||
/**
|
||||
* regex pattern to ignore certain imports e.g. `vs/css!` imports
|
||||
*/
|
||||
importIgnorePattern: RegExp;
|
||||
|
||||
redirects: { [module: string]: string; };
|
||||
}
|
||||
|
||||
export interface ITreeShakingResult {
|
||||
[file: string]: string;
|
||||
}
|
||||
|
||||
export function shake(options: ITreeShakingOptions): ITreeShakingResult {
|
||||
const languageService = createTypeScriptLanguageService(options);
|
||||
|
||||
markNodes(languageService, options.shakeLevel, options.entryPoints.map(moduleId => moduleId + '.ts'), options.importIgnorePattern);
|
||||
|
||||
return generateResult(languageService, options.shakeLevel);
|
||||
}
|
||||
|
||||
//#region Discovery, LanguageService & Setup
|
||||
function createTypeScriptLanguageService(options: ITreeShakingOptions): ts.LanguageService {
|
||||
// Discover referenced files
|
||||
const FILES = discoverAndReadFiles(options);
|
||||
|
||||
// Resolve libs
|
||||
const RESOLVED_LIBS: ILibMap = {};
|
||||
options.libs.forEach((filename) => {
|
||||
const filepath = path.join(TYPESCRIPT_LIB_FOLDER, filename);
|
||||
RESOLVED_LIBS[`defaultLib:${filename}`] = fs.readFileSync(filepath).toString();
|
||||
});
|
||||
|
||||
const host = new TypeScriptLanguageServiceHost(RESOLVED_LIBS, FILES, options.compilerOptions);
|
||||
return ts.createLanguageService(host);
|
||||
}
|
||||
|
||||
/**
|
||||
* Read imports and follow them until all files have been handled
|
||||
*/
|
||||
function discoverAndReadFiles(options: ITreeShakingOptions): IFileMap {
|
||||
const FILES: IFileMap = {};
|
||||
|
||||
const in_queue: { [module: string]: boolean; } = Object.create(null);
|
||||
const queue: string[] = [];
|
||||
|
||||
const enqueue = (moduleId: string) => {
|
||||
if (in_queue[moduleId]) {
|
||||
return;
|
||||
}
|
||||
in_queue[moduleId] = true;
|
||||
queue.push(moduleId);
|
||||
};
|
||||
|
||||
options.entryPoints.forEach((entryPoint) => enqueue(entryPoint));
|
||||
|
||||
while (queue.length > 0) {
|
||||
const moduleId = queue.shift();
|
||||
const dts_filename = path.join(options.sourcesRoot, moduleId + '.d.ts');
|
||||
if (fs.existsSync(dts_filename)) {
|
||||
const dts_filecontents = fs.readFileSync(dts_filename).toString();
|
||||
FILES[moduleId + '.d.ts'] = dts_filecontents;
|
||||
continue;
|
||||
}
|
||||
|
||||
let ts_filename: string;
|
||||
if (options.redirects[moduleId]) {
|
||||
ts_filename = path.join(options.sourcesRoot, options.redirects[moduleId] + '.ts');
|
||||
} else {
|
||||
ts_filename = path.join(options.sourcesRoot, moduleId + '.ts');
|
||||
}
|
||||
const ts_filecontents = fs.readFileSync(ts_filename).toString();
|
||||
const info = ts.preProcessFile(ts_filecontents);
|
||||
for (let i = info.importedFiles.length - 1; i >= 0; i--) {
|
||||
const importedFileName = info.importedFiles[i].fileName;
|
||||
|
||||
if (options.importIgnorePattern.test(importedFileName)) {
|
||||
// Ignore vs/css! imports
|
||||
continue;
|
||||
}
|
||||
|
||||
let importedModuleId = importedFileName;
|
||||
if (/(^\.\/)|(^\.\.\/)/.test(importedModuleId)) {
|
||||
importedModuleId = path.join(path.dirname(moduleId), importedModuleId);
|
||||
}
|
||||
enqueue(importedModuleId);
|
||||
}
|
||||
|
||||
FILES[moduleId + '.ts'] = ts_filecontents;
|
||||
}
|
||||
|
||||
return FILES;
|
||||
}
|
||||
|
||||
interface ILibMap { [libName: string]: string; }
|
||||
interface IFileMap { [fileName: string]: string; }
|
||||
|
||||
/**
|
||||
* A TypeScript language service host
|
||||
*/
|
||||
class TypeScriptLanguageServiceHost implements ts.LanguageServiceHost {
|
||||
|
||||
private readonly _libs: ILibMap;
|
||||
private readonly _files: IFileMap;
|
||||
private readonly _compilerOptions: ts.CompilerOptions;
|
||||
|
||||
constructor(libs: ILibMap, files: IFileMap, compilerOptions: ts.CompilerOptions) {
|
||||
this._libs = libs;
|
||||
this._files = files;
|
||||
this._compilerOptions = compilerOptions;
|
||||
}
|
||||
|
||||
// --- language service host ---------------
|
||||
|
||||
getCompilationSettings(): ts.CompilerOptions {
|
||||
return this._compilerOptions;
|
||||
}
|
||||
getScriptFileNames(): string[] {
|
||||
return (
|
||||
[]
|
||||
.concat(Object.keys(this._libs))
|
||||
.concat(Object.keys(this._files))
|
||||
);
|
||||
}
|
||||
getScriptVersion(fileName: string): string {
|
||||
return '1';
|
||||
}
|
||||
getProjectVersion(): string {
|
||||
return '1';
|
||||
}
|
||||
getScriptSnapshot(fileName: string): ts.IScriptSnapshot {
|
||||
if (this._files.hasOwnProperty(fileName)) {
|
||||
return ts.ScriptSnapshot.fromString(this._files[fileName]);
|
||||
} else if (this._libs.hasOwnProperty(fileName)) {
|
||||
return ts.ScriptSnapshot.fromString(this._libs[fileName]);
|
||||
} else {
|
||||
return ts.ScriptSnapshot.fromString('');
|
||||
}
|
||||
}
|
||||
getScriptKind(fileName: string): ts.ScriptKind {
|
||||
return ts.ScriptKind.TS;
|
||||
}
|
||||
getCurrentDirectory(): string {
|
||||
return '';
|
||||
}
|
||||
getDefaultLibFileName(options: ts.CompilerOptions): string {
|
||||
return 'defaultLib:lib.d.ts';
|
||||
}
|
||||
isDefaultLibFileName(fileName: string): boolean {
|
||||
return fileName === this.getDefaultLibFileName(this._compilerOptions);
|
||||
}
|
||||
}
|
||||
//#endregion
|
||||
|
||||
//#region Tree Shaking
|
||||
|
||||
const enum NodeColor {
|
||||
White = 0,
|
||||
Gray = 1,
|
||||
Black = 2
|
||||
}
|
||||
|
||||
function getColor(node: ts.Node): NodeColor {
|
||||
return (<any>node).$$$color || NodeColor.White;
|
||||
}
|
||||
function setColor(node: ts.Node, color: NodeColor): void {
|
||||
(<any>node).$$$color = color;
|
||||
}
|
||||
function nodeOrParentIsBlack(node: ts.Node): boolean {
|
||||
while (node) {
|
||||
const color = getColor(node);
|
||||
if (color === NodeColor.Black) {
|
||||
return true;
|
||||
}
|
||||
node = node.parent;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
function nodeOrChildIsBlack(node: ts.Node): boolean {
|
||||
if (getColor(node) === NodeColor.Black) {
|
||||
return true;
|
||||
}
|
||||
for (const child of node.getChildren()) {
|
||||
if (nodeOrChildIsBlack(child)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
function markNodes(languageService: ts.LanguageService, shakeLevel: ShakeLevel, entryPointFiles: string[], importIgnorePattern: RegExp) {
|
||||
const program = languageService.getProgram();
|
||||
|
||||
if (shakeLevel === ShakeLevel.Files) {
|
||||
// Mark all source files Black
|
||||
program.getSourceFiles().forEach((sourceFile) => {
|
||||
setColor(sourceFile, NodeColor.Black);
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
const black_queue: ts.Node[] = [];
|
||||
const gray_queue: ts.Node[] = [];
|
||||
const sourceFilesLoaded: { [fileName: string]: boolean } = {};
|
||||
|
||||
function enqueueTopLevelModuleStatements(sourceFile: ts.SourceFile): void {
|
||||
|
||||
sourceFile.forEachChild((node: ts.Node) => {
|
||||
|
||||
if (ts.isImportDeclaration(node)) {
|
||||
if (!node.importClause && ts.isStringLiteral(node.moduleSpecifier)) {
|
||||
setColor(node, NodeColor.Black);
|
||||
enqueueImport(node, node.moduleSpecifier.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (ts.isExportDeclaration(node)) {
|
||||
if (ts.isStringLiteral(node.moduleSpecifier)) {
|
||||
setColor(node, NodeColor.Black);
|
||||
enqueueImport(node, node.moduleSpecifier.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (
|
||||
ts.isExpressionStatement(node)
|
||||
|| ts.isIfStatement(node)
|
||||
|| ts.isIterationStatement(node, true)
|
||||
|| ts.isExportAssignment(node)
|
||||
) {
|
||||
enqueue_black(node);
|
||||
}
|
||||
|
||||
if (ts.isImportEqualsDeclaration(node)) {
|
||||
if (/export/.test(node.getFullText(sourceFile))) {
|
||||
// e.g. "export import Severity = BaseSeverity;"
|
||||
enqueue_black(node);
|
||||
}
|
||||
}
|
||||
|
||||
});
|
||||
}
|
||||
|
||||
function enqueue_gray(node: ts.Node): void {
|
||||
if (nodeOrParentIsBlack(node) || getColor(node) === NodeColor.Gray) {
|
||||
return;
|
||||
}
|
||||
setColor(node, NodeColor.Gray);
|
||||
gray_queue.push(node);
|
||||
}
|
||||
|
||||
function enqueue_black(node: ts.Node): void {
|
||||
const previousColor = getColor(node);
|
||||
|
||||
if (previousColor === NodeColor.Black) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (previousColor === NodeColor.Gray) {
|
||||
// remove from gray queue
|
||||
gray_queue.splice(gray_queue.indexOf(node), 1);
|
||||
setColor(node, NodeColor.White);
|
||||
|
||||
// add to black queue
|
||||
enqueue_black(node);
|
||||
|
||||
// // move from one queue to the other
|
||||
// black_queue.push(node);
|
||||
// setColor(node, NodeColor.Black);
|
||||
return;
|
||||
}
|
||||
|
||||
if (nodeOrParentIsBlack(node)) {
|
||||
return;
|
||||
}
|
||||
|
||||
const fileName = node.getSourceFile().fileName;
|
||||
if (/^defaultLib:/.test(fileName) || /\.d\.ts$/.test(fileName)) {
|
||||
setColor(node, NodeColor.Black);
|
||||
return;
|
||||
}
|
||||
|
||||
const sourceFile = node.getSourceFile();
|
||||
if (!sourceFilesLoaded[sourceFile.fileName]) {
|
||||
sourceFilesLoaded[sourceFile.fileName] = true;
|
||||
enqueueTopLevelModuleStatements(sourceFile);
|
||||
}
|
||||
|
||||
if (ts.isSourceFile(node)) {
|
||||
return;
|
||||
}
|
||||
|
||||
setColor(node, NodeColor.Black);
|
||||
black_queue.push(node);
|
||||
|
||||
if (shakeLevel === ShakeLevel.ClassMembers && (ts.isMethodDeclaration(node) || ts.isMethodSignature(node) || ts.isPropertySignature(node) || ts.isGetAccessor(node) || ts.isSetAccessor(node))) {
|
||||
const references = languageService.getReferencesAtPosition(node.getSourceFile().fileName, node.name.pos + node.name.getLeadingTriviaWidth());
|
||||
if (references) {
|
||||
for (let i = 0, len = references.length; i < len; i++) {
|
||||
const reference = references[i];
|
||||
const referenceSourceFile = program.getSourceFile(reference.fileName);
|
||||
const referenceNode = getTokenAtPosition(referenceSourceFile, reference.textSpan.start, false, false);
|
||||
if (
|
||||
ts.isMethodDeclaration(referenceNode.parent)
|
||||
|| ts.isPropertyDeclaration(referenceNode.parent)
|
||||
|| ts.isGetAccessor(referenceNode.parent)
|
||||
|| ts.isSetAccessor(referenceNode.parent)
|
||||
) {
|
||||
enqueue_gray(referenceNode.parent);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function enqueueFile(filename: string): void {
|
||||
const sourceFile = program.getSourceFile(filename);
|
||||
if (!sourceFile) {
|
||||
console.warn(`Cannot find source file ${filename}`);
|
||||
return;
|
||||
}
|
||||
enqueue_black(sourceFile);
|
||||
}
|
||||
|
||||
function enqueueImport(node: ts.Node, importText: string): void {
|
||||
if (importIgnorePattern.test(importText)) {
|
||||
// this import should be ignored
|
||||
return;
|
||||
}
|
||||
|
||||
const nodeSourceFile = node.getSourceFile();
|
||||
let fullPath: string;
|
||||
if (/(^\.\/)|(^\.\.\/)/.test(importText)) {
|
||||
fullPath = path.join(path.dirname(nodeSourceFile.fileName), importText) + '.ts';
|
||||
} else {
|
||||
fullPath = importText + '.ts';
|
||||
}
|
||||
enqueueFile(fullPath);
|
||||
}
|
||||
|
||||
entryPointFiles.forEach((filename) => enqueueFile(filename));
|
||||
|
||||
let step = 0;
|
||||
|
||||
const checker = program.getTypeChecker();
|
||||
while (black_queue.length > 0 || gray_queue.length > 0) {
|
||||
++step;
|
||||
let node: ts.Node;
|
||||
|
||||
if (step % 100 === 0) {
|
||||
console.log(`${step}/${step+black_queue.length+gray_queue.length} (${black_queue.length}, ${gray_queue.length})`);
|
||||
}
|
||||
|
||||
if (black_queue.length === 0) {
|
||||
for (let i = 0; i < gray_queue.length; i++) {
|
||||
const node = gray_queue[i];
|
||||
const nodeParent = node.parent;
|
||||
if ((ts.isClassDeclaration(nodeParent) || ts.isInterfaceDeclaration(nodeParent)) && nodeOrChildIsBlack(nodeParent)) {
|
||||
gray_queue.splice(i, 1);
|
||||
black_queue.push(node);
|
||||
setColor(node, NodeColor.Black);
|
||||
i--;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (black_queue.length > 0) {
|
||||
node = black_queue.shift();
|
||||
} else {
|
||||
// only gray nodes remaining...
|
||||
break;
|
||||
}
|
||||
const nodeSourceFile = node.getSourceFile();
|
||||
|
||||
const loop = (node: ts.Node) => {
|
||||
const [symbol, symbolImportNode] = getRealNodeSymbol(checker, node);
|
||||
if (symbolImportNode) {
|
||||
setColor(symbolImportNode, NodeColor.Black);
|
||||
}
|
||||
|
||||
if (symbol && !nodeIsInItsOwnDeclaration(nodeSourceFile, node, symbol)) {
|
||||
for (let i = 0, len = symbol.declarations.length; i < len; i++) {
|
||||
const declaration = symbol.declarations[i];
|
||||
if (ts.isSourceFile(declaration)) {
|
||||
// Do not enqueue full source files
|
||||
// (they can be the declaration of a module import)
|
||||
continue;
|
||||
}
|
||||
|
||||
if (shakeLevel === ShakeLevel.ClassMembers && (ts.isClassDeclaration(declaration) || ts.isInterfaceDeclaration(declaration))) {
|
||||
enqueue_black(declaration.name);
|
||||
|
||||
for (let j = 0; j < declaration.members.length; j++) {
|
||||
const member = declaration.members[j];
|
||||
const memberName = member.name ? member.name.getText() : null;
|
||||
if (
|
||||
ts.isConstructorDeclaration(member)
|
||||
|| ts.isConstructSignatureDeclaration(member)
|
||||
|| ts.isIndexSignatureDeclaration(member)
|
||||
|| ts.isCallSignatureDeclaration(member)
|
||||
|| memberName === 'toJSON'
|
||||
|| memberName === 'toString'
|
||||
|| memberName === 'dispose'// TODO: keeping all `dispose` methods
|
||||
) {
|
||||
enqueue_black(member);
|
||||
}
|
||||
}
|
||||
|
||||
// queue the heritage clauses
|
||||
if (declaration.heritageClauses) {
|
||||
for (let heritageClause of declaration.heritageClauses) {
|
||||
enqueue_black(heritageClause);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
enqueue_black(declaration);
|
||||
}
|
||||
}
|
||||
}
|
||||
node.forEachChild(loop);
|
||||
};
|
||||
node.forEachChild(loop);
|
||||
}
|
||||
}
|
||||
|
||||
function nodeIsInItsOwnDeclaration(nodeSourceFile: ts.SourceFile, node: ts.Node, symbol: ts.Symbol): boolean {
|
||||
for (let i = 0, len = symbol.declarations.length; i < len; i++) {
|
||||
const declaration = symbol.declarations[i];
|
||||
const declarationSourceFile = declaration.getSourceFile();
|
||||
|
||||
if (nodeSourceFile === declarationSourceFile) {
|
||||
if (declaration.pos <= node.pos && node.end <= declaration.end) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
function generateResult(languageService: ts.LanguageService, shakeLevel: ShakeLevel): ITreeShakingResult {
|
||||
const program = languageService.getProgram();
|
||||
|
||||
let result: ITreeShakingResult = {};
|
||||
const writeFile = (filePath: string, contents: string): void => {
|
||||
result[filePath] = contents;
|
||||
};
|
||||
|
||||
program.getSourceFiles().forEach((sourceFile) => {
|
||||
const fileName = sourceFile.fileName;
|
||||
if (/^defaultLib:/.test(fileName)) {
|
||||
return;
|
||||
}
|
||||
const destination = fileName;
|
||||
if (/\.d\.ts$/.test(fileName)) {
|
||||
if (nodeOrChildIsBlack(sourceFile)) {
|
||||
writeFile(destination, sourceFile.text);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
let text = sourceFile.text;
|
||||
let result = '';
|
||||
|
||||
function keep(node: ts.Node): void {
|
||||
result += text.substring(node.pos, node.end);
|
||||
}
|
||||
function write(data: string): void {
|
||||
result += data;
|
||||
}
|
||||
|
||||
function writeMarkedNodes(node: ts.Node): void {
|
||||
if (getColor(node) === NodeColor.Black) {
|
||||
return keep(node);
|
||||
}
|
||||
|
||||
// Always keep certain top-level statements
|
||||
if (ts.isSourceFile(node.parent)) {
|
||||
if (ts.isExpressionStatement(node) && ts.isStringLiteral(node.expression) && node.expression.text === 'use strict') {
|
||||
return keep(node);
|
||||
}
|
||||
|
||||
if (ts.isVariableStatement(node) && nodeOrChildIsBlack(node)) {
|
||||
return keep(node);
|
||||
}
|
||||
}
|
||||
|
||||
// Keep the entire import in import * as X cases
|
||||
if (ts.isImportDeclaration(node)) {
|
||||
if (node.importClause && node.importClause.namedBindings) {
|
||||
if (ts.isNamespaceImport(node.importClause.namedBindings)) {
|
||||
if (getColor(node.importClause.namedBindings) === NodeColor.Black) {
|
||||
return keep(node);
|
||||
}
|
||||
} else {
|
||||
let survivingImports: string[] = [];
|
||||
for (let i = 0; i < node.importClause.namedBindings.elements.length; i++) {
|
||||
const importNode = node.importClause.namedBindings.elements[i];
|
||||
if (getColor(importNode) === NodeColor.Black) {
|
||||
survivingImports.push(importNode.getFullText(sourceFile));
|
||||
}
|
||||
}
|
||||
const leadingTriviaWidth = node.getLeadingTriviaWidth();
|
||||
const leadingTrivia = sourceFile.text.substr(node.pos, leadingTriviaWidth);
|
||||
if (survivingImports.length > 0) {
|
||||
if (node.importClause && getColor(node.importClause) === NodeColor.Black) {
|
||||
return write(`${leadingTrivia}import ${node.importClause.name.text}, {${survivingImports.join(',')} } from${node.moduleSpecifier.getFullText(sourceFile)};`);
|
||||
}
|
||||
return write(`${leadingTrivia}import {${survivingImports.join(',')} } from${node.moduleSpecifier.getFullText(sourceFile)};`);
|
||||
} else {
|
||||
if (node.importClause && getColor(node.importClause) === NodeColor.Black) {
|
||||
return write(`${leadingTrivia}import ${node.importClause.name.text} from${node.moduleSpecifier.getFullText(sourceFile)};`);
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (node.importClause && getColor(node.importClause) === NodeColor.Black) {
|
||||
return keep(node);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (shakeLevel === ShakeLevel.ClassMembers && (ts.isClassDeclaration(node) || ts.isInterfaceDeclaration(node)) && nodeOrChildIsBlack(node)) {
|
||||
let toWrite = node.getFullText();
|
||||
for (let i = node.members.length - 1; i >= 0; i--) {
|
||||
const member = node.members[i];
|
||||
if (getColor(member) === NodeColor.Black) {
|
||||
// keep method
|
||||
continue;
|
||||
}
|
||||
if (/^_(.*)Brand$/.test(member.name.getText())) {
|
||||
// TODO: keep all members ending with `Brand`...
|
||||
continue;
|
||||
}
|
||||
|
||||
let pos = member.pos - node.pos;
|
||||
let end = member.end - node.pos;
|
||||
toWrite = toWrite.substring(0, pos) + toWrite.substring(end);
|
||||
}
|
||||
return write(toWrite);
|
||||
}
|
||||
|
||||
if (ts.isFunctionDeclaration(node)) {
|
||||
// Do not go inside functions if they haven't been marked
|
||||
return;
|
||||
}
|
||||
|
||||
node.forEachChild(writeMarkedNodes);
|
||||
}
|
||||
|
||||
if (getColor(sourceFile) !== NodeColor.Black) {
|
||||
if (!nodeOrChildIsBlack(sourceFile)) {
|
||||
// none of the elements are reachable => don't write this file at all!
|
||||
return;
|
||||
}
|
||||
sourceFile.forEachChild(writeMarkedNodes);
|
||||
result += sourceFile.endOfFileToken.getFullText(sourceFile);
|
||||
} else {
|
||||
result = text;
|
||||
}
|
||||
|
||||
writeFile(destination, result);
|
||||
});
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
//#endregion
|
||||
|
||||
//#region Utils
|
||||
|
||||
/**
|
||||
* Returns the node's symbol and the `import` node (if the symbol resolved from a different module)
|
||||
*/
|
||||
function getRealNodeSymbol(checker: ts.TypeChecker, node: ts.Node): [ts.Symbol, ts.Declaration] {
|
||||
/**
|
||||
* Returns the containing object literal property declaration given a possible name node, e.g. "a" in x = { "a": 1 }
|
||||
*/
|
||||
/* @internal */
|
||||
function getContainingObjectLiteralElement(node: ts.Node): ts.ObjectLiteralElement | undefined {
|
||||
switch (node.kind) {
|
||||
case ts.SyntaxKind.StringLiteral:
|
||||
case ts.SyntaxKind.NumericLiteral:
|
||||
if (node.parent.kind === ts.SyntaxKind.ComputedPropertyName) {
|
||||
return ts.isObjectLiteralElement(node.parent.parent) ? node.parent.parent : undefined;
|
||||
}
|
||||
// falls through
|
||||
case ts.SyntaxKind.Identifier:
|
||||
return ts.isObjectLiteralElement(node.parent) &&
|
||||
(node.parent.parent.kind === ts.SyntaxKind.ObjectLiteralExpression || node.parent.parent.kind === ts.SyntaxKind.JsxAttributes) &&
|
||||
node.parent.name === node ? node.parent : undefined;
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
|
||||
function getPropertySymbolsFromType(type: ts.Type, propName: ts.PropertyName) {
|
||||
function getTextOfPropertyName(name: ts.PropertyName): string {
|
||||
|
||||
function isStringOrNumericLiteral(node: ts.Node): node is ts.StringLiteral | ts.NumericLiteral {
|
||||
const kind = node.kind;
|
||||
return kind === ts.SyntaxKind.StringLiteral
|
||||
|| kind === ts.SyntaxKind.NumericLiteral;
|
||||
}
|
||||
|
||||
switch (name.kind) {
|
||||
case ts.SyntaxKind.Identifier:
|
||||
return name.text;
|
||||
case ts.SyntaxKind.StringLiteral:
|
||||
case ts.SyntaxKind.NumericLiteral:
|
||||
return name.text;
|
||||
case ts.SyntaxKind.ComputedPropertyName:
|
||||
return isStringOrNumericLiteral(name.expression) ? name.expression.text : undefined!;
|
||||
}
|
||||
}
|
||||
|
||||
const name = getTextOfPropertyName(propName);
|
||||
if (name && type) {
|
||||
const result: ts.Symbol[] = [];
|
||||
const symbol = type.getProperty(name);
|
||||
if (type.flags & ts.TypeFlags.Union) {
|
||||
for (const t of (<ts.UnionType>type).types) {
|
||||
const symbol = t.getProperty(name);
|
||||
if (symbol) {
|
||||
result.push(symbol);
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
if (symbol) {
|
||||
result.push(symbol);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
|
||||
function getPropertySymbolsFromContextualType(typeChecker: ts.TypeChecker, node: ts.ObjectLiteralElement): ts.Symbol[] {
|
||||
const objectLiteral = <ts.ObjectLiteralExpression | ts.JsxAttributes>node.parent;
|
||||
const contextualType = typeChecker.getContextualType(objectLiteral)!;
|
||||
return getPropertySymbolsFromType(contextualType, node.name!)!;
|
||||
}
|
||||
|
||||
// Go to the original declaration for cases:
|
||||
//
|
||||
// (1) when the aliased symbol was declared in the location(parent).
|
||||
// (2) when the aliased symbol is originating from an import.
|
||||
//
|
||||
function shouldSkipAlias(node: ts.Node, declaration: ts.Node): boolean {
|
||||
if (node.kind !== ts.SyntaxKind.Identifier) {
|
||||
return false;
|
||||
}
|
||||
if (node.parent === declaration) {
|
||||
return true;
|
||||
}
|
||||
switch (declaration.kind) {
|
||||
case ts.SyntaxKind.ImportClause:
|
||||
case ts.SyntaxKind.ImportEqualsDeclaration:
|
||||
return true;
|
||||
case ts.SyntaxKind.ImportSpecifier:
|
||||
return declaration.parent.kind === ts.SyntaxKind.NamedImports;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!ts.isShorthandPropertyAssignment(node)) {
|
||||
if (node.getChildCount() !== 0) {
|
||||
return [null, null];
|
||||
}
|
||||
}
|
||||
|
||||
let symbol = checker.getSymbolAtLocation(node);
|
||||
let importNode: ts.Declaration = null;
|
||||
if (symbol && symbol.flags & ts.SymbolFlags.Alias && shouldSkipAlias(node, symbol.declarations[0])) {
|
||||
const aliased = checker.getAliasedSymbol(symbol);
|
||||
if (aliased.declarations) {
|
||||
// We should mark the import as visited
|
||||
importNode = symbol.declarations[0];
|
||||
symbol = aliased;
|
||||
}
|
||||
}
|
||||
|
||||
if (symbol) {
|
||||
// Because name in short-hand property assignment has two different meanings: property name and property value,
|
||||
// using go-to-definition at such position should go to the variable declaration of the property value rather than
|
||||
// go to the declaration of the property name (in this case stay at the same position). However, if go-to-definition
|
||||
// is performed at the location of property access, we would like to go to definition of the property in the short-hand
|
||||
// assignment. This case and others are handled by the following code.
|
||||
if (node.parent.kind === ts.SyntaxKind.ShorthandPropertyAssignment) {
|
||||
symbol = checker.getShorthandAssignmentValueSymbol(symbol.valueDeclaration);
|
||||
}
|
||||
|
||||
// If the node is the name of a BindingElement within an ObjectBindingPattern instead of just returning the
|
||||
// declaration the symbol (which is itself), we should try to get to the original type of the ObjectBindingPattern
|
||||
// and return the property declaration for the referenced property.
|
||||
// For example:
|
||||
// import('./foo').then(({ b/*goto*/ar }) => undefined); => should get use to the declaration in file "./foo"
|
||||
//
|
||||
// function bar<T>(onfulfilled: (value: T) => void) { //....}
|
||||
// interface Test {
|
||||
// pr/*destination*/op1: number
|
||||
// }
|
||||
// bar<Test>(({pr/*goto*/op1})=>{});
|
||||
if (ts.isPropertyName(node) && ts.isBindingElement(node.parent) && ts.isObjectBindingPattern(node.parent.parent) &&
|
||||
(node === (node.parent.propertyName || node.parent.name))) {
|
||||
const type = checker.getTypeAtLocation(node.parent.parent);
|
||||
if (type) {
|
||||
const propSymbols = getPropertySymbolsFromType(type, node);
|
||||
if (propSymbols) {
|
||||
symbol = propSymbols[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// If the current location we want to find its definition is in an object literal, try to get the contextual type for the
|
||||
// object literal, lookup the property symbol in the contextual type, and use this for goto-definition.
|
||||
// For example
|
||||
// interface Props{
|
||||
// /*first*/prop1: number
|
||||
// prop2: boolean
|
||||
// }
|
||||
// function Foo(arg: Props) {}
|
||||
// Foo( { pr/*1*/op1: 10, prop2: false })
|
||||
const element = getContainingObjectLiteralElement(node);
|
||||
if (element && checker.getContextualType(element.parent as ts.Expression)) {
|
||||
const propertySymbols = getPropertySymbolsFromContextualType(checker, element);
|
||||
if (propertySymbols) {
|
||||
symbol = propertySymbols[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (symbol && symbol.declarations) {
|
||||
return [symbol, importNode];
|
||||
}
|
||||
|
||||
return [null, null];
|
||||
}
|
||||
|
||||
/** Get the token whose text contains the position */
|
||||
function getTokenAtPosition(sourceFile: ts.SourceFile, position: number, allowPositionInLeadingTrivia: boolean, includeEndPosition: boolean): ts.Node {
|
||||
let current: ts.Node = sourceFile;
|
||||
outer: while (true) {
|
||||
// find the child that contains 'position'
|
||||
for (const child of current.getChildren()) {
|
||||
const start = allowPositionInLeadingTrivia ? child.getFullStart() : child.getStart(sourceFile, /*includeJsDoc*/ true);
|
||||
if (start > position) {
|
||||
// If this child begins after position, then all subsequent children will as well.
|
||||
break;
|
||||
}
|
||||
|
||||
const end = child.getEnd();
|
||||
if (position < end || (position === end && (child.kind === ts.SyntaxKind.EndOfFileToken || includeEndPosition))) {
|
||||
current = child;
|
||||
continue outer;
|
||||
}
|
||||
}
|
||||
|
||||
return current;
|
||||
}
|
||||
}
|
||||
|
||||
//#endregion
|
||||
Loading…
Reference in a new issue