@angular-devkit/build-angular
Version:
Angular Webpack Build Facade
57 lines (56 loc) • 2.43 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.dev/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.DevToolsIgnorePlugin = void 0;
const webpack_1 = require("webpack");
// Following the naming conventions from
// https://sourcemaps.info/spec.html#h.ghqpj1ytqjbm
const IGNORE_LIST = 'x_google_ignoreList';
const PLUGIN_NAME = 'devtools-ignore-plugin';
/**
* This plugin adds a field to source maps that identifies which sources are
* vendored or runtime-injected (aka third-party) sources. These are consumed by
* Chrome DevTools to automatically ignore-list sources.
*/
class DevToolsIgnorePlugin {
apply(compiler) {
const { RawSource } = compiler.webpack.sources;
compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
compilation.hooks.processAssets.tap({
name: PLUGIN_NAME,
stage: webpack_1.Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING,
additionalAssets: true,
}, (assets) => {
for (const [name, asset] of Object.entries(assets)) {
// Instead of using `asset.map()` to fetch the source maps from
// SourceMapSource assets, process them directly as a RawSource.
// This is because `.map()` is slow and can take several seconds.
if (!name.endsWith('.map')) {
// Ignore non source map files.
continue;
}
const mapContent = asset.source().toString();
if (!mapContent) {
continue;
}
const map = JSON.parse(mapContent);
const ignoreList = [];
for (const [index, path] of map.sources.entries()) {
if (path.includes('/node_modules/') || path.startsWith('webpack/')) {
ignoreList.push(index);
}
}
map[IGNORE_LIST] = ignoreList;
compilation.updateAsset(name, new RawSource(JSON.stringify(map)));
}
});
});
}
}
exports.DevToolsIgnorePlugin = DevToolsIgnorePlugin;