@angular-devkit/build-angular
Version:
Angular Webpack Build Facade
59 lines • 7.16 kB
JavaScript
;
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.NamedChunksPlugin = void 0;
const webpack_1 = require("webpack");
// `ImportDependency` is not part of Webpack's depenencies typings.
const ImportDependency = require('webpack/lib/dependencies/ImportDependency');
const PLUGIN_NAME = 'named-chunks-plugin';
/**
* Webpack will not populate the chunk `name` property unless `webpackChunkName` magic comment is used.
* This however will also effect the filename which is not desired when using `deterministic` chunkIds.
* This plugin will populate the chunk `name` which is mainly used so that users can set bundle budgets on lazy chunks.
*/
class NamedChunksPlugin {
apply(compiler) {
compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
compilation.hooks.chunkAsset.tap(PLUGIN_NAME, (chunk) => {
if (chunk.name) {
return;
}
if ([...chunk.files.values()].every((f) => f.endsWith('.css'))) {
// If all chunk files are CSS files skip.
// This happens when using `import('./styles.css')` in a lazy loaded module.
return undefined;
}
const name = this.generateName(chunk);
if (name) {
chunk.name = name;
}
});
});
}
generateName(chunk) {
for (const group of chunk.groupsIterable) {
const [block] = group.getBlocks();
if (!(block instanceof webpack_1.AsyncDependenciesBlock)) {
continue;
}
if (block.groupOptions.name) {
// Ignore groups which have been named already.
return undefined;
}
for (const dependency of block.dependencies) {
if (dependency instanceof ImportDependency) {
return webpack_1.Template.toPath(dependency.request);
}
}
}
return undefined;
}
}
exports.NamedChunksPlugin = NamedChunksPlugin;
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