f6be161a3c
In production mode this flag defaults to `true`, but the compliance tests override this to `false` unless it is provided. As such, the linker should also adhere to this default as otherwise the compilation output would not align with the output of the full tests. There are still tests that exercise the value of this flag, together with it being `undefined` to verify the behavior of the actual default value. PR Close #39707
71 lines
2.5 KiB
TypeScript
71 lines
2.5 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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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import {PluginObj, transformSync} from '@babel/core';
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import * as ts from 'typescript';
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import {createEs2015LinkerPlugin} from '../../../linker/babel';
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import {compileFiles, CompileFn, setCompileFn} from '../mock_compile';
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/**
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* A function to compile the given code in two steps:
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*
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* - first compile the code in partial mode
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* - then compile the partially compiled code using the linker
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*
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* This should produce the same output as the full AOT compilation
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*/
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const linkedCompile: CompileFn = (data, angularFiles, options) => {
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if (options !== undefined && options.target !== undefined &&
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options.target < ts.ScriptTarget.ES2015) {
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pending('ES5 is not supported in the partial compilation tests');
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throw new Error('ES5 is not supported in the partial compilation tests');
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}
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const compiledFiles = compileFiles(data, angularFiles, {...options, compilationMode: 'partial'});
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const linkerPlugin = createEs2015LinkerPlugin({
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// enableI18nLegacyMessageIdFormat defaults to false in `compileFiles`.
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enableI18nLegacyMessageIdFormat: false,
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...options,
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});
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const source = compiledFiles.map(file => applyLinker(file, linkerPlugin)).join('\n');
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return {source};
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};
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/**
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* Runs the provided code through the Babel linker plugin, if the file has the .js extension.
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*
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* @param file The file name and its source to be transformed using the linker.
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* @param linkerPlugin The linker plugin to apply.
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* @returns The file's source content, which has been transformed using the linker if necessary.
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*/
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function applyLinker(file: {fileName: string; source: string}, linkerPlugin: PluginObj): string {
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if (!file.fileName.endsWith('.js')) {
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return file.source;
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}
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const result = transformSync(file.source, {
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filename: file.fileName,
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plugins: [linkerPlugin],
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parserOpts: {sourceType: 'unambiguous'},
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});
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if (result === null) {
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throw fail('Babel transform did not have output');
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}
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if (result.code == null) {
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throw fail('Babel transform result does not have any code');
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}
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return result.code;
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}
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// Update the function that will do the compiling with this specialised version that
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// runs the prelink and postlink parts of AOT compilation, to check it produces the
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// same result as a normal full AOT compile.
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setCompileFn(linkedCompile);
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