mirror of https://github.com/webpack/webpack.git
118 lines
3.0 KiB
JavaScript
118 lines
3.0 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const asyncLib = require("neo-async");
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const path = require("path");
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const EntryDependency = require("./dependencies/EntryDependency");
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const { compareModulesById } = require("./util/comparators");
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/** @typedef {import("./Compiler")} Compiler */
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/**
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* @typedef {Object} ManifestModuleData
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* @property {string | number} id
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* @property {Object} buildMeta
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* @property {boolean | string[]} exports
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*/
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class LibManifestPlugin {
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constructor(options) {
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this.options = options;
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}
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/**
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* @param {Compiler} compiler webpack compiler
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* @returns {void}
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*/
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apply(compiler) {
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compiler.hooks.emit.tapAsync(
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"LibManifestPlugin",
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(compilation, callback) => {
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const moduleGraph = compilation.moduleGraph;
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asyncLib.forEach(
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Array.from(compilation.chunks),
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(chunk, callback) => {
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if (!chunk.isOnlyInitial()) {
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callback();
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return;
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}
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const chunkGraph = compilation.chunkGraph;
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const targetPath = compilation.getPath(this.options.path, {
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chunk
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});
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const name =
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this.options.name &&
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compilation.getPath(this.options.name, {
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chunk
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});
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const manifest = {
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name,
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type: this.options.type,
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content: Array.from(
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chunkGraph.getOrderedChunkModulesIterable(
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chunk,
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compareModulesById(chunkGraph)
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),
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module => {
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if (
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this.options.entryOnly &&
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!moduleGraph
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.getIncomingConnections(module)
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.some(c => c.dependency instanceof EntryDependency)
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) {
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return;
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}
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const ident = module.libIdent({
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context: this.options.context || compiler.options.context
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});
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if (ident) {
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const providedExports = moduleGraph.getProvidedExports(
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module
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);
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/** @type {ManifestModuleData} */
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const data = {
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id: chunkGraph.getModuleId(module),
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buildMeta: module.buildMeta,
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exports: Array.isArray(providedExports)
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? providedExports
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: undefined
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};
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return {
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ident,
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data
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};
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}
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}
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)
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.filter(Boolean)
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.reduce((obj, item) => {
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obj[item.ident] = item.data;
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return obj;
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}, Object.create(null))
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};
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// Apply formatting to content if format flag is true;
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const manifestContent = this.options.format
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? JSON.stringify(manifest, null, 2)
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: JSON.stringify(manifest);
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const content = Buffer.from(manifestContent, "utf8");
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compiler.outputFileSystem.mkdirp(path.dirname(targetPath), err => {
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if (err) return callback(err);
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compiler.outputFileSystem.writeFile(
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targetPath,
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content,
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callback
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);
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});
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},
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callback
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);
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}
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);
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}
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}
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module.exports = LibManifestPlugin;
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