@angular-devkit/build-angular
Version:
Angular Webpack Build Facade
76 lines (75 loc) • 3.35 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.DedupeModuleResolvePlugin = void 0;
const webpack_diagnostics_1 = require("../../../utils/webpack-diagnostics");
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function getResourceData(resolveData) {
const { descriptionFileData, relativePath } = resolveData.createData.resourceResolveData;
return {
packageName: descriptionFileData?.name,
packageVersion: descriptionFileData?.version,
relativePath,
resource: resolveData.createData.resource,
};
}
/**
* DedupeModuleResolvePlugin is a webpack plugin which dedupes modules with the same name and versions
* that are laid out in different parts of the node_modules tree.
*
* This is needed because Webpack relies on package managers to hoist modules and doesn't have any deduping logic.
*
* This is similar to how Webpack's 'NormalModuleReplacementPlugin' works
* @see https://github.com/webpack/webpack/blob/4a1f068828c2ab47537d8be30d542cd3a1076db4/lib/NormalModuleReplacementPlugin.js#L9
*/
class DedupeModuleResolvePlugin {
options;
modules = new Map();
constructor(options) {
this.options = options;
}
apply(compiler) {
compiler.hooks.compilation.tap('DedupeModuleResolvePlugin', (compilation, { normalModuleFactory }) => {
normalModuleFactory.hooks.afterResolve.tap('DedupeModuleResolvePlugin', (result) => {
if (!result) {
return;
}
const { packageName, packageVersion, relativePath, resource } = getResourceData(result);
// Empty name or versions are no valid primary entrypoints of a library
if (!packageName || !packageVersion) {
return;
}
const moduleId = packageName + '@' + packageVersion + ':' + relativePath;
const prevResolvedModule = this.modules.get(moduleId);
if (!prevResolvedModule) {
// This is the first time we visit this module.
this.modules.set(moduleId, {
resource,
request: result.request,
});
return;
}
const { resource: prevResource, request: prevRequest } = prevResolvedModule;
if (resource === prevResource) {
// No deduping needed.
// Current path and previously resolved path are the same.
return;
}
if (this.options?.verbose) {
(0, webpack_diagnostics_1.addWarning)(compilation, `[DedupeModuleResolvePlugin]: ${resource} -> ${prevResource}`);
}
// Alter current request with previously resolved module.
const createData = result.createData;
createData.resource = prevResource;
createData.userRequest = prevRequest;
});
});
}
}
exports.DedupeModuleResolvePlugin = DedupeModuleResolvePlugin;