66239b9d09
The `mainNgcc()` function has been refactored to make it easier to call ngcc from JavaScript, rather than via the command line. For example, the `yargs` argument parsing and the exception handling/logging have moved to the `main-ngcc.ts` file so that it is only used for the command line version. FW-1118 PR Close #29092
75 lines
2.8 KiB
TypeScript
75 lines
2.8 KiB
TypeScript
/**
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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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import {checkMarkerFile, writeMarkerFile} from './packages/build_marker';
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import {DependencyHost} from './packages/dependency_host';
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import {DependencyResolver} from './packages/dependency_resolver';
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import {EntryPointFormat} from './packages/entry_point';
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import {makeEntryPointBundle} from './packages/entry_point_bundle';
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import {EntryPointFinder} from './packages/entry_point_finder';
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import {Transformer} from './packages/transformer';
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/**
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* The options to configure the ngcc compiler.
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*/
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export interface NgccOptions {
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/** The path to the node_modules folder that contains the packages to compile. */
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baseSourcePath: string;
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/** A list of JavaScript bundle formats that should be compiled. */
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formats: EntryPointFormat[];
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/** The path to the node_modules folder where modified files should be written. */
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baseTargetPath?: string;
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}
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/**
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* This is the main entry-point into ngcc (aNGular Compatibility Compiler).
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*
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* You can call this function to process one or more npm packages, to ensure
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* that they are compatible with the ivy compiler (ngtsc).
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*
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* @param options The options telling ngcc what to compile and how.
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*/
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export function mainNgcc({baseSourcePath, formats, baseTargetPath = baseSourcePath}: NgccOptions):
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void {
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const transformer = new Transformer(baseSourcePath, baseTargetPath);
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const host = new DependencyHost();
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const resolver = new DependencyResolver(host);
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const finder = new EntryPointFinder(resolver);
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const {entryPoints} = finder.findEntryPoints(baseSourcePath);
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entryPoints.forEach(entryPoint => {
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// Are we compiling the Angular core?
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const isCore = entryPoint.name === '@angular/core';
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// We transform the d.ts typings files while transforming one of the formats.
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// This variable decides with which of the available formats to do this transform.
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// It is marginally faster to process via the flat file if available.
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const dtsTransformFormat: EntryPointFormat = entryPoint.fesm2015 ? 'fesm2015' : 'esm2015';
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formats.forEach(format => {
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if (checkMarkerFile(entryPoint, format)) {
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console.warn(`Skipping ${entryPoint.name} : ${format} (already built).`);
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return;
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}
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const bundle =
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makeEntryPointBundle(entryPoint, isCore, format, format === dtsTransformFormat);
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if (bundle === null) {
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console.warn(
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`Skipping ${entryPoint.name} : ${format} (no entry point file for this format).`);
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} else {
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transformer.transform(entryPoint, isCore, bundle);
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}
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// Write the built-with-ngcc marker
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writeMarkerFile(entryPoint, format);
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});
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});
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}
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