To improve cross platform support, all file access (and path manipulation) is now done through a well known interface (`FileSystem`). For testing a number of `MockFileSystem` implementations are provided. These provide an in-memory file-system which emulates operating systems like OS/X, Unix and Windows. The current file system is always available via the static method, `FileSystem.getFileSystem()`. This is also used by a number of static methods on `AbsoluteFsPath` and `PathSegment`, to avoid having to pass `FileSystem` objects around all the time. The result of this is that one must be careful to ensure that the file-system has been initialized before using any of these static methods. To prevent this happening accidentally the current file system always starts out as an instance of `InvalidFileSystem`, which will throw an error if any of its methods are called. You can set the current file-system by calling `FileSystem.setFileSystem()`. During testing you can call the helper function `initMockFileSystem(os)` which takes a string name of the OS to emulate, and will also monkey-patch aspects of the TypeScript library to ensure that TS is also using the current file-system. Finally there is the `NgtscCompilerHost` to be used for any TypeScript compilation, which uses a given file-system. All tests that interact with the file-system should be tested against each of the mock file-systems. A series of helpers have been provided to support such tests: * `runInEachFileSystem()` - wrap your tests in this helper to run all the wrapped tests in each of the mock file-systems. * `addTestFilesToFileSystem()` - use this to add files and their contents to the mock file system for testing. * `loadTestFilesFromDisk()` - use this to load a mirror image of files on disk into the in-memory mock file-system. * `loadFakeCore()` - use this to load a fake version of `@angular/core` into the mock file-system. All ngcc and ngtsc source and tests now use this virtual file-system setup. PR Close #30921
49 lines
1.7 KiB
JavaScript
49 lines
1.7 KiB
JavaScript
#!/usr/bin/env node
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/**
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* Extract i18n messages from source code
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*/
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// Must be imported first, because Angular decorators throw on load.
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import 'reflect-metadata';
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import * as api from './transformers/api';
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import {ParsedConfiguration} from './perform_compile';
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import {main, readCommandLineAndConfiguration} from './main';
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import {setFileSystem, NodeJSFileSystem} from './ngtsc/file_system';
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export function mainXi18n(
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args: string[], consoleError: (msg: string) => void = console.error): number {
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const config = readXi18nCommandLineAndConfiguration(args);
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return main(args, consoleError, config, undefined, undefined, undefined);
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}
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function readXi18nCommandLineAndConfiguration(args: string[]): ParsedConfiguration {
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const options: api.CompilerOptions = {};
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const parsedArgs = require('minimist')(args);
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if (parsedArgs.outFile) options.i18nOutFile = parsedArgs.outFile;
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if (parsedArgs.i18nFormat) options.i18nOutFormat = parsedArgs.i18nFormat;
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if (parsedArgs.locale) options.i18nOutLocale = parsedArgs.locale;
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const config = readCommandLineAndConfiguration(args, options, [
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'outFile',
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'i18nFormat',
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'locale',
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]);
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// only emit the i18nBundle but nothing else.
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return {...config, emitFlags: api.EmitFlags.I18nBundle};
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}
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// Entry point
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if (require.main === module) {
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const args = process.argv.slice(2);
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// We are running the real compiler so run against the real file-system
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setFileSystem(new NodeJSFileSystem());
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process.exitCode = mainXi18n(args);
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}
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