mirror of https://github.com/webpack/webpack.git
128 lines
3.3 KiB
JavaScript
128 lines
3.3 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 EntryDependency = require("./dependencies/EntryDependency");
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const { compareModulesById } = require("./util/comparators");
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const { dirname, mkdirp } = require("./util/fs");
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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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/**
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* @template T
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* @param {Iterable<T>} iterable iterable
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* @param {function(T): boolean} filter predicate
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* @returns {boolean} true, if some items match the filter predicate
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*/
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const someInIterable = (iterable, filter) => {
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for (const item of iterable) {
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if (filter(item)) return true;
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}
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return false;
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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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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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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.canBeInitial()) {
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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 content = Object.create(null);
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for (const module of chunkGraph.getOrderedChunkModulesIterable(
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chunk,
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compareModulesById(chunkGraph)
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)) {
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if (
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this.options.entryOnly &&
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!someInIterable(
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moduleGraph.getIncomingConnections(module),
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c => c.dependency instanceof EntryDependency
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)
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) {
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continue;
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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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associatedObjectForCache: compiler.root
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});
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if (ident) {
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const exportsInfo = moduleGraph.getExportsInfo(module);
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const providedExports = exportsInfo.getProvidedExports();
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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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content[ident] = data;
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}
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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
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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 buffer = Buffer.from(manifestContent, "utf8");
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mkdirp(
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compiler.intermediateFileSystem,
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dirname(compiler.intermediateFileSystem, targetPath),
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err => {
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if (err) return callback(err);
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compiler.intermediateFileSystem.writeFile(
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targetPath,
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buffer,
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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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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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