@angular-devkit/build-angular
Version:
Angular Webpack Build Facade
73 lines (72 loc) • 3.29 kB
JavaScript
;
/**
* @license
* Copyright Google Inc. 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.AnyComponentStyleBudgetChecker = void 0;
const path = require("path");
const schema_1 = require("../../../src/browser/schema");
const webpack_diagnostics_1 = require("../../utils/webpack-diagnostics");
const bundle_calculator_1 = require("../utilities/bundle-calculator");
const PLUGIN_NAME = 'AnyComponentStyleBudgetChecker';
/**
* Check budget sizes for component styles by emitting a warning or error if a
* budget is exceeded by a particular component's styles.
*/
class AnyComponentStyleBudgetChecker {
constructor(budgets) {
this.budgets = budgets.filter((budget) => budget.type === schema_1.Type.AnyComponentStyle);
}
apply(compiler) {
compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
compilation.hooks.afterOptimizeChunkAssets.tap(PLUGIN_NAME, () => {
// In AOT compilations component styles get processed in child compilations.
// tslint:disable-next-line: no-any
const parentCompilation = compilation.compiler.parentCompilation;
if (!parentCompilation) {
return;
}
const cssExtensions = [
'.css',
'.scss',
'.less',
'.styl',
'.sass',
];
const componentStyles = Object.keys(compilation.assets)
.filter((name) => cssExtensions.includes(path.extname(name)))
.map((name) => ({
size: compilation.assets[name].size(),
label: name,
}));
const thresholds = flatMap(this.budgets, (budget) => bundle_calculator_1.calculateThresholds(budget));
for (const { size, label } of componentStyles) {
for (const { severity, message } of bundle_calculator_1.checkThresholds(thresholds[Symbol.iterator](), size, label)) {
switch (severity) {
case bundle_calculator_1.ThresholdSeverity.Warning:
webpack_diagnostics_1.addWarning(compilation, message);
break;
case bundle_calculator_1.ThresholdSeverity.Error:
webpack_diagnostics_1.addError(compilation, message);
break;
default:
assertNever(severity);
break;
}
}
}
});
});
}
}
exports.AnyComponentStyleBudgetChecker = AnyComponentStyleBudgetChecker;
function assertNever(input) {
throw new Error(`Unexpected call to assertNever() with input: ${JSON.stringify(input, null /* replacer */, 4 /* tabSize */)}`);
}
function flatMap(list, mapper) {
return [].concat(...list.map(mapper).map((iterator) => Array.from(iterator)));
}