mirror of https://github.com/webpack/webpack.git
617 lines
16 KiB
JavaScript
617 lines
16 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 ChunkGraph = require("./ChunkGraph");
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const Entrypoint = require("./Entrypoint");
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const { intersect } = require("./util/SetHelpers");
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const SortableSet = require("./util/SortableSet");
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const { compareModulesById } = require("./util/comparators");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("./ChunkGraph").ChunkFilterPredicate} ChunkFilterPredicate */
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/** @typedef {import("./ChunkGraph").ChunkModuleMaps} ChunkModuleMaps */
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/** @typedef {import("./ChunkGraph").ChunkSizeOptions} ChunkSizeOptions */
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/** @typedef {import("./ChunkGraph").ModuleFilterPredicate} ModuleFilterPredicate */
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/** @typedef {import("./ChunkGroup")} ChunkGroup */
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/** @typedef {import("./Compilation")} Compilation */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./ModuleReason")} ModuleReason */
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/** @typedef {import("./util/createHash").Hash} Hash */
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/**
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* @typedef {Object} WithId an object who has an id property *
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* @property {string | number} id the id of the object
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*/
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/**
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* Compare two Modules based on their ids for sorting
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* @param {Module} a module
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* @param {Module} b module
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* @returns {-1|0|1} sort value
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*/
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let debugId = 1000;
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/**
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* Compare two ChunkGroups based on their ids for sorting
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* @param {ChunkGroup} a chunk group
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* @param {ChunkGroup} b chunk group
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* @returns {-1|0|1} sort value
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*/
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const sortChunkGroupById = (a, b) => {
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if (a.id < b.id) return -1;
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if (b.id < a.id) return 1;
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return 0;
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};
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/**
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* A Chunk is a unit of encapsulation for Modules.
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* Chunks are "rendered" into bundles that get emitted when the build completes.
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*/
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class Chunk {
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/**
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* @param {string=} name of chunk being created, is optional (for subclasses)
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*/
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constructor(name) {
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/** @type {number | string | null} */
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this.id = null;
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/** @type {(number|string)[] | null} */
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this.ids = null;
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/** @type {number} */
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this.debugId = debugId++;
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/** @type {string} */
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this.name = name;
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/** @type {boolean} */
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this.preventIntegration = false;
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/** @type {string?} */
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this.filenameTemplate = undefined;
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/** @private @type {SortableSet<ChunkGroup>} */
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this._groups = new SortableSet(undefined, sortChunkGroupById);
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/** @type {string[]} */
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this.files = [];
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/** @type {boolean} */
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this.rendered = false;
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/** @type {string=} */
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this.hash = undefined;
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/** @type {Record<string, string>} */
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this.contentHash = Object.create(null);
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/** @type {string=} */
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this.renderedHash = undefined;
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/** @type {string=} */
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this.chunkReason = undefined;
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/** @type {boolean} */
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this.extraAsync = false;
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this.removedModules = undefined;
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}
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// TODO remove in webpack 6
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// BACKWARD-COMPAT START
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get entryModule() {
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const entryModules = Array.from(
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ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.entryModule"
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).getChunkEntryModulesIterable(this)
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);
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if (entryModules.length === 0) {
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return undefined;
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} else if (entryModules.length === 1) {
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return entryModules[0];
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} else {
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throw new Error(
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"Module.entryModule: Multiple entry modules are not supported by the deprecated API (Use the new ChunkGroup API)"
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);
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}
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}
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/**
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* @returns {boolean} true, if the chunk contains an entry module
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*/
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hasEntryModule() {
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return (
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ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.hasEntryModule"
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).getNumberOfEntryModules(this) > 0
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);
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}
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/**
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* @param {Module} module the module
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* @returns {boolean} true, if the chunk could be added
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*/
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addModule(module) {
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return ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.addModule"
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).connectChunkAndModule(this, module);
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}
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/**
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* @param {Module} module the module
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* @returns {void}
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*/
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removeModule(module) {
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ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.removeModule"
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).disconnectChunkAndModule(this, module);
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}
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/**
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* @returns {number} the number of module which are contained in this chunk
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*/
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getNumberOfModules() {
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return ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.getNumberOfModules"
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).getNumberOfChunkModules(this);
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}
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get modulesIterable() {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.modulesIterable"
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);
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return chunkGraph.getOrderedChunkModulesIterable(
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this,
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compareModulesById(chunkGraph)
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);
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}
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/**
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* @param {Chunk} otherChunk the chunk to compare with
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* @returns {-1|0|1} the comparison result
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*/
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compareTo(otherChunk) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.compareTo"
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);
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return chunkGraph.compareChunks(this, otherChunk);
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}
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/**
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* @param {Module} module the module
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* @returns {boolean} true, if the chunk contains the module
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*/
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containsModule(module) {
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return ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.containsModule"
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).isModuleInChunk(module, this);
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}
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/**
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* @returns {Module[]} the modules for this chunk
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*/
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getModules() {
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return ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.getModules"
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).getChunkModules(this);
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}
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/**
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* @returns {void}
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*/
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remove() {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(this, "Chunk.remove");
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chunkGraph.disconnectChunk(this);
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this.disconnectFromGroups();
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}
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/**
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* @param {Module} module the module
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* @param {Chunk} otherChunk the target chunk
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* @returns {void}
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*/
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moveModule(module, otherChunk) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.moveModule"
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);
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chunkGraph.disconnectChunkAndModule(this, module);
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chunkGraph.connectChunkAndModule(otherChunk, module);
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}
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/**
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* @param {Chunk} otherChunk the other chunk
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* @returns {boolean} true, if the specified chunk has been integrated
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*/
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integrate(otherChunk) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.integrate"
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);
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if (chunkGraph.canChunksBeIntegrated(this, otherChunk)) {
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chunkGraph.integrateChunks(this, otherChunk);
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return true;
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} else {
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return false;
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}
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}
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/**
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* @param {Chunk} otherChunk the other chunk
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* @returns {boolean} true, if chunks could be integrated
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*/
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canBeIntegrated(otherChunk) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.canBeIntegrated"
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);
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return chunkGraph.canChunksBeIntegrated(this, otherChunk);
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}
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/**
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* @returns {boolean} true, if this chunk contains no module
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*/
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isEmpty() {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(this, "Chunk.isEmpty");
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return chunkGraph.getNumberOfChunkModules(this) === 0;
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}
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/**
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* @returns {number} total size of all modules in this chunk
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*/
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modulesSize() {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.modulesSize"
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);
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return chunkGraph.getChunkModulesSize(this);
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}
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/**
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* @param {ChunkSizeOptions} options options object
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* @returns {number} total size of this chunk
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*/
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size(options) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(this, "Chunk.size");
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return chunkGraph.getChunkSize(this, options);
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}
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/**
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* @param {Chunk} otherChunk the other chunk
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* @param {ChunkSizeOptions} options options object
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* @returns {number} total size of the chunk or false if the chunk can't be integrated
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*/
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integratedSize(otherChunk, options) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.integratedSize"
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);
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return chunkGraph.getIntegratedChunksSize(this, otherChunk, options);
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}
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/**
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* @param {ModuleFilterPredicate} filterFn function used to filter modules
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* @returns {ChunkModuleMaps} module map information
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*/
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getChunkModuleMaps(filterFn) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.getChunkModuleMaps"
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);
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return chunkGraph.getChunkModuleMaps(this, filterFn);
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}
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/**
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* @param {ModuleFilterPredicate} filterFn predicate function used to filter modules
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* @param {ChunkFilterPredicate=} filterChunkFn predicate function used to filter chunks
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* @returns {boolean} return true if module exists in graph
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*/
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hasModuleInGraph(filterFn, filterChunkFn) {
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const chunkGraph = ChunkGraph.getChunkGraphForChunk(
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this,
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"Chunk.hasModuleInGraph"
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);
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return chunkGraph.hasModuleInGraph(this, filterFn, filterChunkFn);
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}
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// BACKWARD-COMPAT END
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/**
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* @returns {boolean} whether or not the Chunk will have a runtime
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*/
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hasRuntime() {
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for (const chunkGroup of this._groups) {
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if (
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chunkGroup.isInitial() &&
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chunkGroup instanceof Entrypoint &&
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chunkGroup.getRuntimeChunk() === this
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) {
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return true;
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}
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}
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return false;
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}
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/**
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* @returns {boolean} whether or not this chunk can be an initial chunk
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*/
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canBeInitial() {
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for (const chunkGroup of this._groups) {
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if (chunkGroup.isInitial()) return true;
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}
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return false;
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}
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/**
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* @returns {boolean} whether this chunk can only be an initial chunk
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*/
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isOnlyInitial() {
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if (this._groups.size <= 0) return false;
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for (const chunkGroup of this._groups) {
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if (!chunkGroup.isInitial()) return false;
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}
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return true;
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}
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/**
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* @param {ChunkGroup} chunkGroup the chunkGroup the chunk is being added
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* @returns {boolean} returns true if chunk is not apart of chunkGroup and is added successfully
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*/
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addGroup(chunkGroup) {
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if (this._groups.has(chunkGroup)) return false;
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this._groups.add(chunkGroup);
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return true;
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}
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/**
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* @param {ChunkGroup} chunkGroup the chunkGroup the chunk is being removed from
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* @returns {boolean} returns true if chunk does exist in chunkGroup and is removed
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*/
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removeGroup(chunkGroup) {
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if (!this._groups.has(chunkGroup)) return false;
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this._groups.delete(chunkGroup);
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return true;
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}
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/**
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* @param {ChunkGroup} chunkGroup the chunkGroup to check
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* @returns {boolean} returns true if chunk has chunkGroup reference and exists in chunkGroup
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*/
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isInGroup(chunkGroup) {
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return this._groups.has(chunkGroup);
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}
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/**
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* @returns {number} the amount of groups said chunk is in
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*/
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getNumberOfGroups() {
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return this._groups.size;
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}
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/**
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* @returns {Iterable<ChunkGroup>} the chunkGroups that said chunk is referenced in
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*/
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get groupsIterable() {
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return this._groups;
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}
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/**
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* @returns {void}
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*/
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disconnectFromGroups() {
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for (const chunkGroup of this._groups) {
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chunkGroup.removeChunk(this);
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}
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}
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/**
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* @param {Chunk} newChunk the new chunk that will be split out of, and then chunk raphi twil=
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* @returns {void}
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*/
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split(newChunk) {
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for (const chunkGroup of this._groups) {
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chunkGroup.insertChunk(newChunk, this);
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newChunk.addGroup(chunkGroup);
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}
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}
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/**
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* @param {Hash} hash hash (will be modified)
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* @param {ChunkGraph} chunkGraph the chunk graph
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* @returns {void}
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*/
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updateHash(hash, chunkGraph) {
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hash.update(`${this.id} `);
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hash.update(this.ids ? this.ids.join(",") : "");
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hash.update(`${this.name || ""} `);
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for (const m of chunkGraph.getOrderedChunkModulesIterable(
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this,
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compareModulesById(chunkGraph)
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)) {
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hash.update(chunkGraph.getModuleHash(m));
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}
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const entryModules = chunkGraph.getChunkEntryModulesWithChunkGroupIterable(
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this
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);
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for (const [m, chunkGroup] of entryModules) {
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hash.update("entry");
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hash.update(chunkGraph.getModuleHash(m));
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hash.update(chunkGroup.id);
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}
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}
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/**
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* @returns {Set<Chunk>} a set of all the async chunks
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*/
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getAllAsyncChunks() {
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const queue = new Set();
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const chunks = new Set();
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const initialChunks = intersect(
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Array.from(this.groupsIterable, g => new Set(g.chunks))
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);
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for (const chunkGroup of this.groupsIterable) {
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for (const child of chunkGroup.childrenIterable) {
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queue.add(child);
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}
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}
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for (const chunkGroup of queue) {
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for (const chunk of chunkGroup.chunks) {
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if (!initialChunks.has(chunk)) {
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chunks.add(chunk);
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}
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}
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for (const child of chunkGroup.childrenIterable) {
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queue.add(child);
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}
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}
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return chunks;
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}
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/**
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* @returns {boolean} true, if the chunk references async chunks
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*/
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hasAsyncChunks() {
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const queue = new Set();
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const initialChunks = intersect(
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Array.from(this.groupsIterable, g => new Set(g.chunks))
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);
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for (const chunkGroup of this.groupsIterable) {
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for (const child of chunkGroup.childrenIterable) {
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queue.add(child);
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}
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}
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for (const chunkGroup of queue) {
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for (const chunk of chunkGroup.chunks) {
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if (!initialChunks.has(chunk)) {
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return true;
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}
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}
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for (const child of chunkGroup.childrenIterable) {
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queue.add(child);
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}
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}
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return false;
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}
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/**
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* @typedef {Object} ChunkMaps
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* @property {Record<string|number, string>} hash
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* @property {Record<string|number, Record<string, string>>} contentHash
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* @property {Record<string|number, string>} name
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*/
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/**
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* @param {boolean=} realHash should the full hash or the rendered hash be used
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* @returns {ChunkMaps} the chunk map information
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*/
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getChunkMaps(realHash) {
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/** @type {Record<string|number, string>} */
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const chunkHashMap = Object.create(null);
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/** @type {Record<string|number, Record<string, string>>} */
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const chunkContentHashMap = Object.create(null);
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/** @type {Record<string|number, string>} */
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const chunkNameMap = Object.create(null);
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for (const chunk of this.getAllAsyncChunks()) {
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chunkHashMap[chunk.id] = realHash ? chunk.hash : chunk.renderedHash;
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for (const key of Object.keys(chunk.contentHash)) {
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if (!chunkContentHashMap[key]) {
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chunkContentHashMap[key] = Object.create(null);
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}
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chunkContentHashMap[key][chunk.id] = chunk.contentHash[key];
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}
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if (chunk.name) {
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chunkNameMap[chunk.id] = chunk.name;
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}
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}
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return {
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hash: chunkHashMap,
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contentHash: chunkContentHashMap,
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name: chunkNameMap
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};
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}
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/**
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* @param {ChunkGraph} chunkGraph the chunk graph
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* @returns {Record<string, Set<TODO>[]>} a record object of names to lists of child ids(?)
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*/
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getChildIdsByOrders(chunkGraph) {
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const lists = new Map();
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for (const group of this.groupsIterable) {
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if (group.chunks[group.chunks.length - 1] === this) {
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for (const childGroup of group.childrenIterable) {
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for (const key of Object.keys(childGroup.options)) {
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if (key.endsWith("Order")) {
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const name = key.substr(0, key.length - "Order".length);
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let list = lists.get(name);
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if (list === undefined) lists.set(name, (list = []));
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list.push({
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order: childGroup.options[key],
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group: childGroup
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});
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}
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}
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}
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}
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}
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const result = Object.create(null);
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for (const [name, list] of lists) {
|
|
list.sort((a, b) => {
|
|
const cmp = b.order - a.order;
|
|
if (cmp !== 0) return cmp;
|
|
return a.group.compareTo(chunkGraph, b.group);
|
|
});
|
|
result[name] = Array.from(
|
|
list.reduce((set, item) => {
|
|
for (const chunk of item.group.chunks) {
|
|
set.add(chunk.id);
|
|
}
|
|
return set;
|
|
}, new Set())
|
|
);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {ChunkGraph} chunkGraph the chunk graph
|
|
* @param {boolean=} includeDirectChildren include direct children (by default only children of async children are included)
|
|
* @returns {Record<string|number, Record<string, Set<TODO>[]>>} a record object of names to lists of child ids(?) by chunk id
|
|
*/
|
|
getChildIdsByOrdersMap(chunkGraph, includeDirectChildren) {
|
|
const chunkMaps = Object.create(null);
|
|
|
|
const addChildIdsByOrdersToMap = chunk => {
|
|
const data = chunk.getChildIdsByOrders(chunkGraph);
|
|
for (const key of Object.keys(data)) {
|
|
let chunkMap = chunkMaps[key];
|
|
if (chunkMap === undefined) {
|
|
chunkMaps[key] = chunkMap = Object.create(null);
|
|
}
|
|
chunkMap[chunk.id] = data[key];
|
|
}
|
|
};
|
|
|
|
if (includeDirectChildren) {
|
|
addChildIdsByOrdersToMap(this);
|
|
}
|
|
|
|
for (const chunk of this.getAllAsyncChunks()) {
|
|
addChildIdsByOrdersToMap(chunk);
|
|
}
|
|
|
|
return chunkMaps;
|
|
}
|
|
}
|
|
|
|
module.exports = Chunk;
|