Improve error message
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@ -1366,8 +1366,10 @@ namespace ts {
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if (moduleNotFoundError) {
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// report errors only if it was requested
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if (hasTypeScriptFileExtensionNonDts(moduleName)) {
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error(moduleReferenceLiteral, Diagnostics.Module_name_should_not_include_a_ts_extension_Colon_0, moduleName);
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const nonDtsExtension = tryExtractTypeScriptExtensionNonDts(moduleName);
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if (nonDtsExtension) {
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const diag = Diagnostics.An_import_path_should_not_end_with_a_0_extension_Consider_importing_1_instead;
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error(moduleReferenceLiteral, diag, nonDtsExtension, removeExtension(moduleName, nonDtsExtension));
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}
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else {
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error(moduleReferenceLiteral, moduleNotFoundError, moduleName);
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@ -93,6 +93,17 @@ namespace ts {
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return undefined;
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}
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/** Works like Array.prototype.find. */
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export function find<T>(array: T[], predicate: (element: T, index: number) => boolean): T | undefined {
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for (let i = 0, len = array.length; i < len; i++) {
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const value = array[i];
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if (predicate(value, i)) {
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return value;
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}
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}
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return undefined;
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}
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export function contains<T>(array: T[], value: T): boolean {
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if (array) {
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for (const v of array) {
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@ -941,7 +952,7 @@ namespace ts {
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* [^./] # matches everything up to the first . character (excluding directory seperators)
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* (\\.(?!min\\.js$))? # matches . characters but not if they are part of the .min.js file extension
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*/
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const singleAsteriskRegexFragmentFiles = "([^./]|(\\.(?!min\\.js$))?)*";
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const singleAsteriskRegexFragmentFiles = "([^./]|(\\.(?!min\\.js$))?)*";
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const singleAsteriskRegexFragmentOther = "[^/]*";
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export function getRegularExpressionForWildcard(specs: string[], basePath: string, usage: "files" | "directories" | "exclude") {
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@ -1271,8 +1282,12 @@ namespace ts {
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return path;
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}
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export function tryRemoveExtension(path: string, extension: string): string {
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return fileExtensionIs(path, extension) ? path.substring(0, path.length - extension.length) : undefined;
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export function tryRemoveExtension(path: string, extension: string): string | undefined {
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return fileExtensionIs(path, extension) ? removeExtension(path, extension) : undefined;
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}
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export function removeExtension(path: string, extension: string): string {
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return path.substring(0, path.length - extension.length);
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}
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export function isJsxOrTsxExtension(ext: string): boolean {
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@ -1951,7 +1951,7 @@
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"category": "Error",
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"code": 2690
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},
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"Module name should not include a '.ts' extension: '{0}'.": {
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"An import path should not end with a '{0}' extension. Consider importing '{1}' instead.": {
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"category": "Error",
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"code": 2691
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},
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@ -2726,8 +2726,9 @@ namespace ts {
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return forEach(supportedTypeScriptExtensions, extension => fileExtensionIs(fileName, extension));
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}
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export function hasTypeScriptFileExtensionNonDts(fileName: string) {
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return forEach(supportedTypeScriptExtensionsNonDts, extension => fileExtensionIs(fileName, extension));
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/** Return ".ts" or ".tsx" if that is the extension. */
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export function tryExtractTypeScriptExtensionNonDts(fileName: string): string | undefined {
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return find(supportedTypeScriptExtensionsNonDts, extension => fileExtensionIs(fileName, extension));
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}
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/**
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@ -1,14 +1,25 @@
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tests/cases/compiler/user.ts(4,15): error TS2690: Module name should not include a '.ts' extension: './m.ts'.
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tests/cases/compiler/user.ts(4,15): error TS2691: An import path should not end with a '.ts' extension. Consider importing './x' instead.
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tests/cases/compiler/user.ts(5,15): error TS2691: An import path should not end with a '.tsx' extension. Consider importing './y' instead.
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==== tests/cases/compiler/user.ts (1 errors) ====
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==== tests/cases/compiler/user.ts (2 errors) ====
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// '.ts' extension is OK in a reference
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///<reference path="./m.ts"/>
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///<reference path="./x.ts"/>
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import x from "./m.ts";
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import x from "./x.ts";
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~~~~~~~~
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!!! error TS2690: Module name should not include a '.ts' extension: './m.ts'.
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!!! error TS2691: An import path should not end with a '.ts' extension. Consider importing './x' instead.
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import y from "./y.tsx";
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~~~~~~~~~
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!!! error TS2691: An import path should not end with a '.tsx' extension. Consider importing './y' instead.
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==== tests/cases/compiler/m.ts (0 errors) ====
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// Making sure the suggested fixes are valid:
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import x2 from "./x";
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import y2 from "./y";
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==== tests/cases/compiler/x.ts (0 errors) ====
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export default 0;
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==== tests/cases/compiler/y.tsx (0 errors) ====
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export default 0;
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@ -1,20 +1,32 @@
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//// [tests/cases/compiler/moduleResolutionNoTs.ts] ////
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//// [m.ts]
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//// [x.ts]
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export default 0;
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//// [y.tsx]
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export default 0;
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//// [user.ts]
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// '.ts' extension is OK in a reference
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///<reference path="./m.ts"/>
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///<reference path="./x.ts"/>
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import x from "./m.ts";
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import x from "./x.ts";
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import y from "./y.tsx";
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// Making sure the suggested fixes are valid:
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import x2 from "./x";
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import y2 from "./y";
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//// [m.js]
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//// [x.js]
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"use strict";
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exports.__esModule = true;
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exports["default"] = 0;
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//// [y.js]
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"use strict";
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exports.__esModule = true;
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exports["default"] = 0;
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//// [user.js]
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// '.ts' extension is OK in a reference
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///<reference path="./m.ts"/>
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///<reference path="./x.ts"/>
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"use strict";
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@ -1,8 +1,16 @@
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// @filename: m.ts
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// @filename: x.ts
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export default 0;
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// @filename: y.tsx
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export default 0;
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// @filename: user.ts
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// '.ts' extension is OK in a reference
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///<reference path="./m.ts"/>
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///<reference path="./x.ts"/>
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import x from "./m.ts";
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import x from "./x.ts";
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import y from "./y.tsx";
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// Making sure the suggested fixes are valid:
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import x2 from "./x";
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import y2 from "./y";
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