1451 lines
42 KiB
JavaScript
1451 lines
42 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("async");
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const crypto = require("crypto");
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const Tapable = require("tapable");
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const EntryModuleNotFoundError = require("./EntryModuleNotFoundError");
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const ModuleNotFoundError = require("./ModuleNotFoundError");
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const ModuleDependencyWarning = require("./ModuleDependencyWarning");
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const ModuleDependencyError = require("./ModuleDependencyError");
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const Module = require("./Module");
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const Chunk = require("./Chunk");
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const Entrypoint = require("./Entrypoint");
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const MainTemplate = require("./MainTemplate");
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const ChunkTemplate = require("./ChunkTemplate");
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const HotUpdateChunkTemplate = require("./HotUpdateChunkTemplate");
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const ModuleTemplate = require("./ModuleTemplate");
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const Dependency = require("./Dependency");
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const ChunkRenderError = require("./ChunkRenderError");
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const AsyncDependencyToInitialChunkWarning = require("./AsyncDependencyToInitialChunkWarning");
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const CachedSource = require("webpack-sources").CachedSource;
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const Stats = require("./Stats");
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const Semaphore = require("./util/Semaphore");
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const Queue = require("./util/Queue");
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function byId(a, b) {
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if(a.id < b.id) return -1;
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if(a.id > b.id) return 1;
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return 0;
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}
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function byIndex(a, b) {
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if(a.index < b.index) return -1;
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if(a.index > b.index) return 1;
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return 0;
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}
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function iterationBlockVariable(variables, fn) {
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for(let indexVariable = 0; indexVariable < variables.length; indexVariable++) {
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const varDep = variables[indexVariable].dependencies;
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for(let indexVDep = 0; indexVDep < varDep.length; indexVDep++) {
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fn(varDep[indexVDep]);
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}
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}
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}
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function iterationOfArrayCallback(arr, fn) {
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for(let index = 0; index < arr.length; index++) {
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fn(arr[index]);
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}
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}
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class Compilation extends Tapable {
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constructor(compiler) {
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super();
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this.compiler = compiler;
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this.resolvers = compiler.resolvers;
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this.inputFileSystem = compiler.inputFileSystem;
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const options = this.options = compiler.options;
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this.outputOptions = options && options.output;
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this.bail = options && options.bail;
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this.profile = options && options.profile;
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this.performance = options && options.performance;
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this.mainTemplate = new MainTemplate(this.outputOptions);
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this.chunkTemplate = new ChunkTemplate(this.outputOptions);
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this.hotUpdateChunkTemplate = new HotUpdateChunkTemplate(this.outputOptions);
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this.moduleTemplate = new ModuleTemplate(this.outputOptions);
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this.semaphore = new Semaphore(options.parallelism || 100);
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this.entries = [];
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this.preparedChunks = [];
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this.entrypoints = {};
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this.chunks = [];
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this.namedChunks = {};
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this.modules = [];
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this._modules = {};
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this.cache = null;
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this.records = null;
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this.nextFreeModuleIndex = undefined;
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this.nextFreeModuleIndex2 = undefined;
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this.additionalChunkAssets = [];
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this.assets = {};
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this.errors = [];
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this.warnings = [];
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this.children = [];
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this.dependencyFactories = new Map();
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this.dependencyTemplates = new Map();
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this.dependencyTemplates.set("hash", "");
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this.childrenCounters = {};
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}
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getStats() {
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return new Stats(this);
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}
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templatesPlugin(name, fn) {
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this.mainTemplate.plugin(name, fn);
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this.chunkTemplate.plugin(name, fn);
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}
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addModule(module, cacheGroup) {
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const identifier = module.identifier();
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if(this._modules[identifier]) {
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return false;
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}
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const cacheName = (cacheGroup || "m") + identifier;
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if(this.cache && this.cache[cacheName]) {
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const cacheModule = this.cache[cacheName];
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let rebuild = true;
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if(!cacheModule.error && cacheModule.cacheable && this.fileTimestamps && this.contextTimestamps) {
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rebuild = cacheModule.needRebuild(this.fileTimestamps, this.contextTimestamps);
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}
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if(!rebuild) {
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cacheModule.disconnect();
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this._modules[identifier] = cacheModule;
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this.modules.push(cacheModule);
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cacheModule.errors.forEach(err => this.errors.push(err));
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cacheModule.warnings.forEach(err => this.warnings.push(err));
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return cacheModule;
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}
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}
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module.unbuild();
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this._modules[identifier] = module;
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if(this.cache) {
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this.cache[cacheName] = module;
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}
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this.modules.push(module);
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return true;
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}
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getModule(module) {
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const identifier = module.identifier();
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return this._modules[identifier];
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}
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findModule(identifier) {
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return this._modules[identifier];
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}
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buildModule(module, optional, origin, dependencies, thisCallback) {
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this.applyPlugins1("build-module", module);
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if(module.building) return module.building.push(thisCallback);
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const building = module.building = [thisCallback];
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function callback(err) {
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module.building = undefined;
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building.forEach(cb => cb(err));
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}
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module.build(this.options, this, this.resolvers.normal, this.inputFileSystem, (error) => {
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const errors = module.errors;
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for(let indexError = 0; indexError < errors.length; indexError++) {
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const err = errors[indexError];
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err.origin = origin;
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err.dependencies = dependencies;
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if(optional)
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this.warnings.push(err);
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else
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this.errors.push(err);
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}
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const warnings = module.warnings;
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for(let indexWarning = 0; indexWarning < warnings.length; indexWarning++) {
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const war = warnings[indexWarning];
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war.origin = origin;
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war.dependencies = dependencies;
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this.warnings.push(war);
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}
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module.dependencies.sort(Dependency.compare);
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if(error) {
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this.applyPlugins2("failed-module", module, error);
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return callback(error);
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}
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this.applyPlugins1("succeed-module", module);
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return callback();
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});
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}
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processModuleDependencies(module, callback) {
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const dependencies = [];
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function addDependency(dep) {
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for(let i = 0; i < dependencies.length; i++) {
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if(dep.isEqualResource(dependencies[i][0])) {
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return dependencies[i].push(dep);
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}
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}
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dependencies.push([dep]);
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}
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function addDependenciesBlock(block) {
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if(block.dependencies) {
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iterationOfArrayCallback(block.dependencies, addDependency);
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}
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if(block.blocks) {
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iterationOfArrayCallback(block.blocks, addDependenciesBlock);
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}
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if(block.variables) {
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iterationBlockVariable(block.variables, addDependency);
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}
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}
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addDependenciesBlock(module);
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this.addModuleDependencies(module, dependencies, this.bail, null, true, callback);
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}
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addModuleDependencies(module, dependencies, bail, cacheGroup, recursive, callback) {
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let _this = this;
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const start = _this.profile && Date.now();
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const factories = [];
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for(let i = 0; i < dependencies.length; i++) {
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const factory = _this.dependencyFactories.get(dependencies[i][0].constructor);
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if(!factory) {
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return callback(new Error(`No module factory available for dependency type: ${dependencies[i][0].constructor.name}`));
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}
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factories[i] = [factory, dependencies[i]];
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}
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asyncLib.forEach(factories, function iteratorFactory(item, callback) {
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const dependencies = item[1];
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const errorAndCallback = function errorAndCallback(err) {
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err.origin = module;
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_this.errors.push(err);
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if(bail) {
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callback(err);
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} else {
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callback();
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}
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};
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const warningAndCallback = function warningAndCallback(err) {
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err.origin = module;
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_this.warnings.push(err);
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callback();
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};
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const semaphore = _this.semaphore;
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semaphore.acquire(() => {
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if(_this === null) return semaphore.release();
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const factory = item[0];
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factory.create({
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contextInfo: {
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issuer: module.nameForCondition && module.nameForCondition(),
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compiler: _this.compiler.name
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},
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context: module.context,
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dependencies: dependencies
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}, function factoryCallback(err, dependentModule) {
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if(_this === null) return semaphore.release();
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let afterFactory;
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function isOptional() {
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return dependencies.filter(d => !d.optional).length === 0;
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}
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function errorOrWarningAndCallback(err) {
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if(isOptional()) {
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return warningAndCallback(err);
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} else {
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return errorAndCallback(err);
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}
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}
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function iterationDependencies(depend) {
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for(let index = 0; index < depend.length; index++) {
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const dep = depend[index];
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dep.module = dependentModule;
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dependentModule.addReason(module, dep);
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}
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}
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if(err) {
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semaphore.release();
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return errorOrWarningAndCallback(new ModuleNotFoundError(module, err, dependencies));
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}
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if(!dependentModule) {
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semaphore.release();
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return process.nextTick(callback);
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}
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if(_this.profile) {
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if(!dependentModule.profile) {
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dependentModule.profile = {};
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}
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afterFactory = Date.now();
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dependentModule.profile.factory = afterFactory - start;
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}
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dependentModule.issuer = module;
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const newModule = _this.addModule(dependentModule, cacheGroup);
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if(!newModule) { // from cache
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dependentModule = _this.getModule(dependentModule);
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if(dependentModule.optional) {
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dependentModule.optional = isOptional();
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}
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iterationDependencies(dependencies);
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if(_this.profile) {
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module.profile = module.profile || {};
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const time = Date.now() - start;
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if(!module.profile.dependencies || time > module.profile.dependencies) {
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module.profile.dependencies = time;
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}
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}
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semaphore.release();
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return process.nextTick(callback);
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}
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if(newModule instanceof Module) {
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if(_this.profile) {
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newModule.profile = dependentModule.profile;
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}
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newModule.optional = isOptional();
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newModule.issuer = dependentModule.issuer;
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dependentModule = newModule;
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iterationDependencies(dependencies);
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if(_this.profile) {
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const afterBuilding = Date.now();
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module.profile.building = afterBuilding - afterFactory;
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}
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semaphore.release();
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if(recursive) {
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return process.nextTick(_this.processModuleDependencies.bind(_this, dependentModule, callback));
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} else {
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return process.nextTick(callback);
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}
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}
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dependentModule.optional = isOptional();
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iterationDependencies(dependencies);
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_this.buildModule(dependentModule, isOptional(), module, dependencies, err => {
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if(_this === null) return semaphore.release();
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if(err) {
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semaphore.release();
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return errorOrWarningAndCallback(err);
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}
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if(_this.profile) {
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const afterBuilding = Date.now();
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dependentModule.profile.building = afterBuilding - afterFactory;
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}
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semaphore.release();
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if(recursive) {
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_this.processModuleDependencies(dependentModule, callback);
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} else {
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return callback();
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}
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});
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});
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});
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}, function finalCallbackAddModuleDependencies(err) {
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// In V8, the Error objects keep a reference to the functions on the stack. These warnings &
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// errors are created inside closures that keep a reference to the Compilation, so errors are
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// leaking the Compilation object. Setting _this to null workarounds the following issue in V8.
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// https://bugs.chromium.org/p/chromium/issues/detail?id=612191
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_this = null;
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if(err) {
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return callback(err);
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}
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return process.nextTick(callback);
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});
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}
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_addModuleChain(context, dependency, onModule, callback) {
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const start = this.profile && Date.now();
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const errorAndCallback = this.bail ? (err) => {
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callback(err);
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} : (err) => {
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err.dependencies = [dependency];
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this.errors.push(err);
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callback();
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};
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if(typeof dependency !== "object" || dependency === null || !dependency.constructor) {
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throw new Error("Parameter 'dependency' must be a Dependency");
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}
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const moduleFactory = this.dependencyFactories.get(dependency.constructor);
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if(!moduleFactory) {
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throw new Error(`No dependency factory available for this dependency type: ${dependency.constructor.name}`);
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}
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this.semaphore.acquire(() => {
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moduleFactory.create({
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contextInfo: {
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issuer: "",
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compiler: this.compiler.name
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},
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context: context,
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dependencies: [dependency]
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}, (err, module) => {
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if(err) {
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this.semaphore.release();
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return errorAndCallback(new EntryModuleNotFoundError(err));
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}
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let afterFactory;
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if(this.profile) {
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if(!module.profile) {
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module.profile = {};
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}
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afterFactory = Date.now();
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module.profile.factory = afterFactory - start;
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}
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const result = this.addModule(module);
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if(!result) {
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module = this.getModule(module);
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onModule(module);
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if(this.profile) {
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const afterBuilding = Date.now();
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module.profile.building = afterBuilding - afterFactory;
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}
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this.semaphore.release();
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return callback(null, module);
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}
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if(result instanceof Module) {
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if(this.profile) {
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result.profile = module.profile;
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}
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module = result;
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onModule(module);
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moduleReady.call(this);
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return;
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}
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onModule(module);
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this.buildModule(module, false, null, null, (err) => {
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if(err) {
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this.semaphore.release();
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return errorAndCallback(err);
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}
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if(this.profile) {
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const afterBuilding = Date.now();
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module.profile.building = afterBuilding - afterFactory;
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}
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moduleReady.call(this);
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});
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function moduleReady() {
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this.semaphore.release();
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this.processModuleDependencies(module, err => {
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if(err) {
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return callback(err);
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}
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return callback(null, module);
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});
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}
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});
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});
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}
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addEntry(context, entry, name, callback) {
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const slot = {
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name: name,
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module: null
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};
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this.preparedChunks.push(slot);
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this._addModuleChain(context, entry, (module) => {
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entry.module = module;
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this.entries.push(module);
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module.issuer = null;
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}, (err, module) => {
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if(err) {
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return callback(err);
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}
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if(module) {
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slot.module = module;
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} else {
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const idx = this.preparedChunks.indexOf(slot);
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this.preparedChunks.splice(idx, 1);
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}
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return callback(null, module);
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});
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}
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prefetch(context, dependency, callback) {
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this._addModuleChain(context, dependency, module => {
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module.prefetched = true;
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module.issuer = null;
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}, callback);
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}
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rebuildModule(module, thisCallback) {
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if(module.variables.length || module.blocks.length)
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throw new Error("Cannot rebuild a complex module with variables or blocks");
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if(module.rebuilding) {
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return module.rebuilding.push(thisCallback);
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}
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const rebuilding = module.rebuilding = [thisCallback];
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function callback(err) {
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module.rebuilding = undefined;
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rebuilding.forEach(cb => cb(err));
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}
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const deps = module.dependencies.slice();
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this.buildModule(module, false, module, null, (err) => {
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if(err) return callback(err);
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this.processModuleDependencies(module, (err) => {
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if(err) return callback(err);
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deps.forEach(d => {
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if(d.module && d.module.removeReason(module, d)) {
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module.forEachChunk(chunk => {
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if(!d.module.hasReasonForChunk(chunk)) {
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if(d.module.removeChunk(chunk)) {
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this.removeChunkFromDependencies(d.module, chunk);
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}
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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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finish() {
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const modules = this.modules;
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this.applyPlugins1("finish-modules", modules);
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for(let index = 0; index < modules.length; index++) {
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const module = modules[index];
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this.reportDependencyErrorsAndWarnings(module, [module]);
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}
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}
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unseal() {
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this.applyPlugins0("unseal");
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this.chunks.length = 0;
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this.namedChunks = {};
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this.additionalChunkAssets.length = 0;
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this.assets = {};
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this.modules.forEach(module => module.unseal());
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}
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seal(callback) {
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this.applyPlugins0("seal");
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this.nextFreeModuleIndex = 0;
|
|
this.nextFreeModuleIndex2 = 0;
|
|
this.preparedChunks.forEach(preparedChunk => {
|
|
const module = preparedChunk.module;
|
|
const chunk = this.addChunk(preparedChunk.name, module);
|
|
const entrypoint = this.entrypoints[chunk.name] = new Entrypoint(chunk.name);
|
|
entrypoint.unshiftChunk(chunk);
|
|
|
|
chunk.addModule(module);
|
|
module.addChunk(chunk);
|
|
chunk.entryModule = module;
|
|
this.assignIndex(module);
|
|
this.assignDepth(module);
|
|
});
|
|
this.processDependenciesBlocksForChunks(this.chunks.slice());
|
|
this.sortModules(this.modules);
|
|
this.applyPlugins0("optimize");
|
|
|
|
while(this.applyPluginsBailResult1("optimize-modules-basic", this.modules) ||
|
|
this.applyPluginsBailResult1("optimize-modules", this.modules) ||
|
|
this.applyPluginsBailResult1("optimize-modules-advanced", this.modules)) { /* empty */ }
|
|
this.applyPlugins1("after-optimize-modules", this.modules);
|
|
|
|
while(this.applyPluginsBailResult1("optimize-chunks-basic", this.chunks) ||
|
|
this.applyPluginsBailResult1("optimize-chunks", this.chunks) ||
|
|
this.applyPluginsBailResult1("optimize-chunks-advanced", this.chunks)) { /* empty */ }
|
|
this.applyPlugins1("after-optimize-chunks", this.chunks);
|
|
|
|
this.applyPluginsAsyncSeries("optimize-tree", this.chunks, this.modules, (err) => {
|
|
if(err) {
|
|
return callback(err);
|
|
}
|
|
|
|
this.applyPlugins2("after-optimize-tree", this.chunks, this.modules);
|
|
|
|
while(this.applyPluginsBailResult("optimize-chunk-modules-basic", this.chunks, this.modules) ||
|
|
this.applyPluginsBailResult("optimize-chunk-modules", this.chunks, this.modules) ||
|
|
this.applyPluginsBailResult("optimize-chunk-modules-advanced", this.chunks, this.modules)) { /* empty */ }
|
|
this.applyPlugins2("after-optimize-chunk-modules", this.chunks, this.modules);
|
|
|
|
const shouldRecord = this.applyPluginsBailResult("should-record") !== false;
|
|
|
|
this.applyPlugins2("revive-modules", this.modules, this.records);
|
|
this.applyPlugins1("optimize-module-order", this.modules);
|
|
this.applyPlugins1("advanced-optimize-module-order", this.modules);
|
|
this.applyPlugins1("before-module-ids", this.modules);
|
|
this.applyPlugins1("module-ids", this.modules);
|
|
this.applyModuleIds();
|
|
this.applyPlugins1("optimize-module-ids", this.modules);
|
|
this.applyPlugins1("after-optimize-module-ids", this.modules);
|
|
|
|
this.sortItemsWithModuleIds();
|
|
|
|
this.applyPlugins2("revive-chunks", this.chunks, this.records);
|
|
this.applyPlugins1("optimize-chunk-order", this.chunks);
|
|
this.applyPlugins1("before-chunk-ids", this.chunks);
|
|
this.applyChunkIds();
|
|
this.applyPlugins1("optimize-chunk-ids", this.chunks);
|
|
this.applyPlugins1("after-optimize-chunk-ids", this.chunks);
|
|
|
|
this.sortItemsWithChunkIds();
|
|
|
|
if(shouldRecord)
|
|
this.applyPlugins2("record-modules", this.modules, this.records);
|
|
if(shouldRecord)
|
|
this.applyPlugins2("record-chunks", this.chunks, this.records);
|
|
|
|
this.applyPlugins0("before-hash");
|
|
this.createHash();
|
|
this.applyPlugins0("after-hash");
|
|
|
|
if(shouldRecord)
|
|
this.applyPlugins1("record-hash", this.records);
|
|
|
|
this.applyPlugins0("before-module-assets");
|
|
this.createModuleAssets();
|
|
if(this.applyPluginsBailResult("should-generate-chunk-assets") !== false) {
|
|
this.applyPlugins0("before-chunk-assets");
|
|
this.createChunkAssets();
|
|
}
|
|
this.applyPlugins1("additional-chunk-assets", this.chunks);
|
|
this.summarizeDependencies();
|
|
if(shouldRecord)
|
|
this.applyPlugins2("record", this, this.records);
|
|
|
|
this.applyPluginsAsync("additional-assets", err => {
|
|
if(err) {
|
|
return callback(err);
|
|
}
|
|
this.applyPluginsAsync("optimize-chunk-assets", this.chunks, err => {
|
|
if(err) {
|
|
return callback(err);
|
|
}
|
|
this.applyPlugins1("after-optimize-chunk-assets", this.chunks);
|
|
this.applyPluginsAsync("optimize-assets", this.assets, err => {
|
|
if(err) {
|
|
return callback(err);
|
|
}
|
|
this.applyPlugins1("after-optimize-assets", this.assets);
|
|
if(this.applyPluginsBailResult("need-additional-seal")) {
|
|
this.unseal();
|
|
return this.seal(callback);
|
|
}
|
|
return this.applyPluginsAsync("after-seal", callback);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
sortModules(modules) {
|
|
modules.sort(byIndex);
|
|
}
|
|
|
|
reportDependencyErrorsAndWarnings(module, blocks) {
|
|
for(let indexBlock = 0; indexBlock < blocks.length; indexBlock++) {
|
|
const block = blocks[indexBlock];
|
|
const dependencies = block.dependencies;
|
|
|
|
for(let indexDep = 0; indexDep < dependencies.length; indexDep++) {
|
|
const d = dependencies[indexDep];
|
|
|
|
const warnings = d.getWarnings();
|
|
if(warnings) {
|
|
for(let indexWar = 0; indexWar < warnings.length; indexWar++) {
|
|
const w = warnings[indexWar];
|
|
|
|
const warning = new ModuleDependencyWarning(module, w, d.loc);
|
|
this.warnings.push(warning);
|
|
}
|
|
}
|
|
const errors = d.getErrors();
|
|
if(errors) {
|
|
for(let indexErr = 0; indexErr < errors.length; indexErr++) {
|
|
const e = errors[indexErr];
|
|
|
|
const error = new ModuleDependencyError(module, e, d.loc);
|
|
this.errors.push(error);
|
|
}
|
|
}
|
|
}
|
|
|
|
this.reportDependencyErrorsAndWarnings(module, block.blocks);
|
|
}
|
|
}
|
|
|
|
addChunk(name, module, loc) {
|
|
if(name) {
|
|
if(Object.prototype.hasOwnProperty.call(this.namedChunks, name)) {
|
|
const chunk = this.namedChunks[name];
|
|
if(module) {
|
|
chunk.addOrigin(module, loc);
|
|
}
|
|
return chunk;
|
|
}
|
|
}
|
|
const chunk = new Chunk(name, module, loc);
|
|
this.chunks.push(chunk);
|
|
if(name) {
|
|
this.namedChunks[name] = chunk;
|
|
}
|
|
return chunk;
|
|
}
|
|
|
|
assignIndex(module) {
|
|
const _this = this;
|
|
|
|
const queue = [() => {
|
|
assignIndexToModule(module);
|
|
}];
|
|
|
|
const iteratorAllDependencies = d => {
|
|
queue.push(() => assignIndexToDependency(d));
|
|
};
|
|
|
|
function assignIndexToModule(module) {
|
|
// enter module
|
|
if(typeof module.index !== "number") {
|
|
module.index = _this.nextFreeModuleIndex++;
|
|
|
|
// leave module
|
|
queue.push(() => module.index2 = _this.nextFreeModuleIndex2++);
|
|
|
|
// enter it as block
|
|
assignIndexToDependencyBlock(module);
|
|
}
|
|
}
|
|
|
|
function assignIndexToDependency(dependency) {
|
|
if(dependency.module) {
|
|
queue.push(() => assignIndexToModule(dependency.module));
|
|
}
|
|
}
|
|
|
|
function assignIndexToDependencyBlock(block) {
|
|
let allDependencies = [];
|
|
|
|
function iteratorDependency(d) {
|
|
allDependencies.push(d);
|
|
}
|
|
|
|
function iteratorBlock(b) {
|
|
queue.push(() => assignIndexToDependencyBlock(b));
|
|
}
|
|
|
|
if(block.variables) {
|
|
iterationBlockVariable(block.variables, iteratorDependency);
|
|
}
|
|
|
|
if(block.dependencies) {
|
|
iterationOfArrayCallback(block.dependencies, iteratorDependency);
|
|
}
|
|
if(block.blocks) {
|
|
const blocks = block.blocks;
|
|
let indexBlock = blocks.length;
|
|
while(indexBlock--) {
|
|
iteratorBlock(blocks[indexBlock]);
|
|
}
|
|
}
|
|
|
|
let indexAll = allDependencies.length;
|
|
while(indexAll--) {
|
|
iteratorAllDependencies(allDependencies[indexAll]);
|
|
}
|
|
}
|
|
|
|
while(queue.length) {
|
|
queue.pop()();
|
|
}
|
|
}
|
|
|
|
assignDepth(module) {
|
|
function assignDepthToModule(module, depth) {
|
|
// enter module
|
|
if(typeof module.depth === "number" && module.depth <= depth) return;
|
|
module.depth = depth;
|
|
|
|
// enter it as block
|
|
assignDepthToDependencyBlock(module, depth + 1);
|
|
}
|
|
|
|
function assignDepthToDependency(dependency, depth) {
|
|
if(dependency.module) {
|
|
queue.push(() => assignDepthToModule(dependency.module, depth));
|
|
}
|
|
}
|
|
|
|
function assignDepthToDependencyBlock(block, depth) {
|
|
function iteratorDependency(d) {
|
|
assignDepthToDependency(d, depth);
|
|
}
|
|
|
|
function iteratorBlock(b) {
|
|
assignDepthToDependencyBlock(b, depth);
|
|
}
|
|
|
|
if(block.variables) {
|
|
iterationBlockVariable(block.variables, iteratorDependency);
|
|
}
|
|
|
|
if(block.dependencies) {
|
|
iterationOfArrayCallback(block.dependencies, iteratorDependency);
|
|
}
|
|
|
|
if(block.blocks) {
|
|
iterationOfArrayCallback(block.blocks, iteratorBlock);
|
|
}
|
|
}
|
|
|
|
const queue = [() => {
|
|
assignDepthToModule(module, 0);
|
|
}];
|
|
while(queue.length) {
|
|
queue.pop()();
|
|
}
|
|
}
|
|
|
|
// This method creates the Chunk graph from the Module graph
|
|
processDependenciesBlocksForChunks(inputChunks) {
|
|
// Process is splitting into two parts:
|
|
// Part one traverse the module graph and builds a very basic chunks graph
|
|
// in chunkDependencies.
|
|
// Part two traverse every possible way through the basic chunk graph and
|
|
// tracks the available modules. While traversing it connects chunks with
|
|
// eachother and Blocks with Chunks. It stops traversing when all modules
|
|
// for a chunk are already available. So it doesn't connect unneeded chunks.
|
|
|
|
const chunkDependencies = new Map(); // Map<Chunk, Array<{Module, Chunk}>>
|
|
const allCreatedChunks = new Set();
|
|
|
|
// PART ONE
|
|
|
|
const blockChunks = new Map();
|
|
|
|
// Start with the provided modules/chunks
|
|
const queue = inputChunks.map(chunk => ({
|
|
block: chunk.entryModule,
|
|
chunk: chunk
|
|
}));
|
|
|
|
let block, chunk;
|
|
|
|
// For each async Block in graph
|
|
const iteratorBlock = b => {
|
|
// 1. We create a chunk for this Block
|
|
// but only once (blockChunks map)
|
|
let c = blockChunks.get(b);
|
|
if(c === undefined) {
|
|
c = this.namedChunks[b.chunkName];
|
|
if(c && c.isInitial()) {
|
|
// TODO webpack 4: convert this to an error
|
|
this.warnings.push(new AsyncDependencyToInitialChunkWarning(b.chunkName, b.module, b.loc));
|
|
c = chunk;
|
|
} else {
|
|
c = this.addChunk(b.chunkName, b.module, b.loc);
|
|
blockChunks.set(b, c);
|
|
allCreatedChunks.add(c);
|
|
// We initialize the chunks property
|
|
// this is later filled with the chunk when needed
|
|
b.chunks = [];
|
|
}
|
|
}
|
|
|
|
// 2. We store the Block+Chunk mapping as dependency for the chunk
|
|
let deps = chunkDependencies.get(chunk);
|
|
if(!deps) chunkDependencies.set(chunk, deps = []);
|
|
deps.push({
|
|
block: b,
|
|
chunk: c
|
|
});
|
|
|
|
// 3. We enqueue the DependenciesBlock for traversal
|
|
queue.push({
|
|
block: b,
|
|
chunk: c
|
|
});
|
|
};
|
|
|
|
// For each Dependency in the graph
|
|
const iteratorDependency = d => {
|
|
// We skip Dependencies without Module pointer
|
|
if(!d.module) {
|
|
return;
|
|
}
|
|
// We skip weak Dependencies
|
|
if(d.weak) {
|
|
return;
|
|
}
|
|
// We connect Module and Chunk when not already done
|
|
if(chunk.addModule(d.module)) {
|
|
d.module.addChunk(chunk);
|
|
|
|
// And enqueue the Module for traversal
|
|
queue.push({
|
|
block: d.module,
|
|
chunk
|
|
});
|
|
}
|
|
};
|
|
|
|
// Iterative traversal of the Module graph
|
|
// Recursive would be simpler to write but could result in Stack Overflows
|
|
while(queue.length) {
|
|
const queueItem = queue.pop();
|
|
block = queueItem.block;
|
|
chunk = queueItem.chunk;
|
|
|
|
// Traverse all variables, Dependencies and Blocks
|
|
if(block.variables) {
|
|
iterationBlockVariable(block.variables, iteratorDependency);
|
|
}
|
|
|
|
if(block.dependencies) {
|
|
iterationOfArrayCallback(block.dependencies, iteratorDependency);
|
|
}
|
|
|
|
if(block.blocks) {
|
|
iterationOfArrayCallback(block.blocks, iteratorBlock);
|
|
}
|
|
}
|
|
|
|
// PART TWO
|
|
|
|
let availableModules;
|
|
let newAvailableModules;
|
|
const queue2 = new Queue(inputChunks.map(chunk => ({
|
|
chunk,
|
|
availableModules: new Set()
|
|
})));
|
|
|
|
// Helper function to check if all modules of a chunk are available
|
|
const areModulesAvailable = (chunk, availableModules) => {
|
|
for(const module of chunk.modulesIterable) {
|
|
if(!availableModules.has(module))
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
// For each edge in the basic chunk graph
|
|
const filterFn = dep => {
|
|
// Filter egdes that are not needed because all modules are already available
|
|
// This also filters circular dependencies in the chunks graph
|
|
const depChunk = dep.chunk;
|
|
if(areModulesAvailable(depChunk, newAvailableModules))
|
|
return false; // break all modules are already available
|
|
return true;
|
|
};
|
|
|
|
const minAvailableModulesMap = new Map();
|
|
|
|
// Iterative traversing of the basic chunk graph
|
|
while(queue2.length) {
|
|
const queueItem = queue2.dequeue();
|
|
chunk = queueItem.chunk;
|
|
availableModules = queueItem.availableModules;
|
|
|
|
// 1. Get minimal available modules
|
|
// It doesn't make sense to traverse a chunk again with more available modules.
|
|
// This step calculates the minimal available modules and skips traversal when
|
|
// the list didn't shrink.
|
|
let minAvailableModules = minAvailableModulesMap.get(chunk);
|
|
if(minAvailableModules === undefined) {
|
|
minAvailableModulesMap.set(chunk, new Set(availableModules));
|
|
} else {
|
|
let deletedModules = false;
|
|
for(const m of minAvailableModules) {
|
|
if(!availableModules.has(m)) {
|
|
minAvailableModules.delete(m);
|
|
deletedModules = true;
|
|
}
|
|
}
|
|
if(!deletedModules)
|
|
continue;
|
|
availableModules = minAvailableModules;
|
|
}
|
|
|
|
// 2. Get the edges at this point of the graph
|
|
const deps = chunkDependencies.get(chunk);
|
|
if(!deps) continue;
|
|
if(deps.length === 0) continue;
|
|
|
|
// 3. Create a new Set of available modules at this points
|
|
newAvailableModules = new Set(availableModules);
|
|
for(const m of chunk.modulesIterable)
|
|
newAvailableModules.add(m);
|
|
|
|
// 4. Filter edges with available modules
|
|
const filteredDeps = deps.filter(filterFn);
|
|
|
|
// 5. Foreach remaining edge
|
|
const nextChunks = new Set();
|
|
for(let i = 0; i < filteredDeps.length; i++) {
|
|
const dep = filteredDeps[i];
|
|
const depChunk = dep.chunk;
|
|
const depBlock = dep.block;
|
|
|
|
// 6. Connnect block with chunk
|
|
if(depChunk.addBlock(depBlock)) {
|
|
depBlock.chunks.push(depChunk);
|
|
}
|
|
|
|
// 7. Connect chunk with parent
|
|
if(chunk.addChunk(depChunk)) {
|
|
depChunk.addParent(chunk);
|
|
}
|
|
|
|
nextChunks.add(depChunk);
|
|
}
|
|
|
|
// 8. Enqueue further traversal
|
|
for(const nextChunk of nextChunks) {
|
|
queue2.enqueue({
|
|
chunk: nextChunk,
|
|
availableModules: newAvailableModules
|
|
});
|
|
}
|
|
}
|
|
|
|
// Remove all unconnected chunks
|
|
for(const chunk of allCreatedChunks) {
|
|
if(chunk.parents.length === 0)
|
|
chunk.remove("unconnected");
|
|
}
|
|
}
|
|
|
|
removeChunkFromDependencies(block, chunk) {
|
|
const iteratorDependency = d => {
|
|
if(!d.module) {
|
|
return;
|
|
}
|
|
if(!d.module.hasReasonForChunk(chunk)) {
|
|
if(d.module.removeChunk(chunk)) {
|
|
this.removeChunkFromDependencies(d.module, chunk);
|
|
}
|
|
}
|
|
};
|
|
|
|
const blocks = block.blocks;
|
|
for(let indexBlock = 0; indexBlock < blocks.length; indexBlock++) {
|
|
const chunks = blocks[indexBlock].chunks;
|
|
for(let indexChunk = 0; indexChunk < chunks.length; indexChunk++) {
|
|
const blockChunk = chunks[indexChunk];
|
|
chunk.removeChunk(blockChunk);
|
|
blockChunk.removeParent(chunk);
|
|
this.removeChunkFromDependencies(chunks, blockChunk);
|
|
}
|
|
}
|
|
|
|
if(block.dependencies) {
|
|
iterationOfArrayCallback(block.dependencies, iteratorDependency);
|
|
}
|
|
|
|
if(block.variables) {
|
|
iterationBlockVariable(block.variables, iteratorDependency);
|
|
}
|
|
}
|
|
|
|
applyModuleIds() {
|
|
const unusedIds = [];
|
|
let nextFreeModuleId = 0;
|
|
const usedIds = [];
|
|
// TODO consider Map when performance has improved https://gist.github.com/sokra/234c077e1299b7369461f1708519c392
|
|
const usedIdMap = Object.create(null);
|
|
if(this.usedModuleIds) {
|
|
Object.keys(this.usedModuleIds).forEach(key => {
|
|
const id = this.usedModuleIds[key];
|
|
if(!usedIdMap[id]) {
|
|
usedIds.push(id);
|
|
usedIdMap[id] = true;
|
|
}
|
|
});
|
|
}
|
|
|
|
const modules1 = this.modules;
|
|
for(let indexModule1 = 0; indexModule1 < modules1.length; indexModule1++) {
|
|
const module1 = modules1[indexModule1];
|
|
if(module1.id && !usedIdMap[module1.id]) {
|
|
usedIds.push(module1.id);
|
|
usedIdMap[module1.id] = true;
|
|
}
|
|
}
|
|
|
|
if(usedIds.length > 0) {
|
|
let usedIdMax = -1;
|
|
for(let index = 0; index < usedIds.length; index++) {
|
|
const usedIdKey = usedIds[index];
|
|
|
|
if(typeof usedIdKey !== "number") {
|
|
continue;
|
|
}
|
|
|
|
usedIdMax = Math.max(usedIdMax, usedIdKey);
|
|
}
|
|
|
|
let lengthFreeModules = nextFreeModuleId = usedIdMax + 1;
|
|
|
|
while(lengthFreeModules--) {
|
|
if(!usedIdMap[lengthFreeModules]) {
|
|
unusedIds.push(lengthFreeModules);
|
|
}
|
|
}
|
|
}
|
|
|
|
const modules2 = this.modules;
|
|
for(let indexModule2 = 0; indexModule2 < modules2.length; indexModule2++) {
|
|
const module2 = modules2[indexModule2];
|
|
if(module2.id === null) {
|
|
if(unusedIds.length > 0)
|
|
module2.id = unusedIds.pop();
|
|
else
|
|
module2.id = nextFreeModuleId++;
|
|
}
|
|
}
|
|
}
|
|
|
|
applyChunkIds() {
|
|
const unusedIds = [];
|
|
let nextFreeChunkId = 0;
|
|
|
|
function getNextFreeChunkId(usedChunkIds) {
|
|
const keyChunks = Object.keys(usedChunkIds);
|
|
let result = -1;
|
|
|
|
for(let index = 0; index < keyChunks.length; index++) {
|
|
const usedIdKey = keyChunks[index];
|
|
const usedIdValue = usedChunkIds[usedIdKey];
|
|
|
|
if(typeof usedIdValue !== "number") {
|
|
continue;
|
|
}
|
|
|
|
result = Math.max(result, usedIdValue);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
if(this.usedChunkIds) {
|
|
nextFreeChunkId = getNextFreeChunkId(this.usedChunkIds) + 1;
|
|
let index = nextFreeChunkId;
|
|
while(index--) {
|
|
if(this.usedChunkIds[index] !== index) {
|
|
unusedIds.push(index);
|
|
}
|
|
}
|
|
}
|
|
|
|
const chunks = this.chunks;
|
|
for(let indexChunk = 0; indexChunk < chunks.length; indexChunk++) {
|
|
const chunk = chunks[indexChunk];
|
|
if(chunk.id === null) {
|
|
if(unusedIds.length > 0)
|
|
chunk.id = unusedIds.pop();
|
|
else
|
|
chunk.id = nextFreeChunkId++;
|
|
}
|
|
if(!chunk.ids) {
|
|
chunk.ids = [chunk.id];
|
|
}
|
|
}
|
|
}
|
|
|
|
sortItemsWithModuleIds() {
|
|
this.modules.sort(byId);
|
|
|
|
const modules = this.modules;
|
|
for(let indexModule = 0; indexModule < modules.length; indexModule++) {
|
|
modules[indexModule].sortItems(false);
|
|
}
|
|
|
|
const chunks = this.chunks;
|
|
for(let indexChunk = 0; indexChunk < chunks.length; indexChunk++) {
|
|
chunks[indexChunk].sortItems();
|
|
}
|
|
}
|
|
|
|
sortItemsWithChunkIds() {
|
|
this.chunks.sort(byId);
|
|
|
|
for(let indexModule = 0; indexModule < this.modules.length; indexModule++) {
|
|
this.modules[indexModule].sortItems(true);
|
|
}
|
|
|
|
for(let indexChunk = 0; indexChunk < this.chunks.length; indexChunk++) {
|
|
this.chunks[indexChunk].sortItems();
|
|
}
|
|
|
|
const byMessage = (a, b) => {
|
|
const ma = `${a.message}`;
|
|
const mb = `${b.message}`;
|
|
if(ma < mb) return -1;
|
|
if(mb < ma) return 1;
|
|
return 0;
|
|
};
|
|
|
|
this.errors.sort(byMessage);
|
|
this.warnings.sort(byMessage);
|
|
}
|
|
|
|
summarizeDependencies() {
|
|
function filterDups(array) {
|
|
const newArray = [];
|
|
for(let i = 0; i < array.length; i++) {
|
|
if(i === 0 || array[i - 1] !== array[i])
|
|
newArray.push(array[i]);
|
|
}
|
|
return newArray;
|
|
}
|
|
this.fileDependencies = (this.compilationDependencies || []).slice();
|
|
this.contextDependencies = [];
|
|
this.missingDependencies = [];
|
|
|
|
for(let indexChildren = 0; indexChildren < this.children.length; indexChildren++) {
|
|
const child = this.children[indexChildren];
|
|
|
|
this.fileDependencies = this.fileDependencies.concat(child.fileDependencies);
|
|
this.contextDependencies = this.contextDependencies.concat(child.contextDependencies);
|
|
this.missingDependencies = this.missingDependencies.concat(child.missingDependencies);
|
|
}
|
|
|
|
for(let indexModule = 0; indexModule < this.modules.length; indexModule++) {
|
|
const module = this.modules[indexModule];
|
|
|
|
if(module.fileDependencies) {
|
|
const fileDependencies = module.fileDependencies;
|
|
for(let indexFileDep = 0; indexFileDep < fileDependencies.length; indexFileDep++) {
|
|
this.fileDependencies.push(fileDependencies[indexFileDep]);
|
|
}
|
|
}
|
|
if(module.contextDependencies) {
|
|
const contextDependencies = module.contextDependencies;
|
|
for(let indexContextDep = 0; indexContextDep < contextDependencies.length; indexContextDep++) {
|
|
this.contextDependencies.push(contextDependencies[indexContextDep]);
|
|
}
|
|
}
|
|
}
|
|
this.errors.forEach(error => {
|
|
if(Array.isArray(error.missing)) {
|
|
error.missing.forEach(item => this.missingDependencies.push(item));
|
|
}
|
|
});
|
|
this.fileDependencies.sort();
|
|
this.fileDependencies = filterDups(this.fileDependencies);
|
|
this.contextDependencies.sort();
|
|
this.contextDependencies = filterDups(this.contextDependencies);
|
|
this.missingDependencies.sort();
|
|
this.missingDependencies = filterDups(this.missingDependencies);
|
|
}
|
|
|
|
createHash() {
|
|
const outputOptions = this.outputOptions;
|
|
const hashFunction = outputOptions.hashFunction;
|
|
const hashDigest = outputOptions.hashDigest;
|
|
const hashDigestLength = outputOptions.hashDigestLength;
|
|
const hash = crypto.createHash(hashFunction);
|
|
if(outputOptions.hashSalt)
|
|
hash.update(outputOptions.hashSalt);
|
|
this.mainTemplate.updateHash(hash);
|
|
this.chunkTemplate.updateHash(hash);
|
|
this.moduleTemplate.updateHash(hash);
|
|
this.children.forEach(function(child) {
|
|
hash.update(child.hash);
|
|
});
|
|
this.warnings.forEach(function(warning) {
|
|
hash.update(`${warning.message}`);
|
|
});
|
|
this.errors.forEach(function(error) {
|
|
hash.update(`${error.message}`);
|
|
});
|
|
// clone needed as sort below is inplace mutation
|
|
const chunks = this.chunks.slice();
|
|
/**
|
|
* sort here will bring all "falsy" values to the beginning
|
|
* this is needed as the "hasRuntime()" chunks are dependent on the
|
|
* hashes of the non-runtime chunks.
|
|
*/
|
|
chunks.sort((a, b) => {
|
|
const aEntry = a.hasRuntime();
|
|
const bEntry = b.hasRuntime();
|
|
if(aEntry && !bEntry) return 1;
|
|
if(!aEntry && bEntry) return -1;
|
|
return 0;
|
|
});
|
|
for(let i = 0; i < chunks.length; i++) {
|
|
const chunk = chunks[i];
|
|
const chunkHash = crypto.createHash(hashFunction);
|
|
if(outputOptions.hashSalt)
|
|
chunkHash.update(outputOptions.hashSalt);
|
|
chunk.updateHash(chunkHash);
|
|
if(chunk.hasRuntime()) {
|
|
this.mainTemplate.updateHashForChunk(chunkHash, chunk);
|
|
} else {
|
|
this.chunkTemplate.updateHashForChunk(chunkHash, chunk);
|
|
}
|
|
this.applyPlugins2("chunk-hash", chunk, chunkHash);
|
|
chunk.hash = chunkHash.digest(hashDigest);
|
|
hash.update(chunk.hash);
|
|
chunk.renderedHash = chunk.hash.substr(0, hashDigestLength);
|
|
}
|
|
this.fullHash = hash.digest(hashDigest);
|
|
this.hash = this.fullHash.substr(0, hashDigestLength);
|
|
}
|
|
|
|
modifyHash(update) {
|
|
const outputOptions = this.outputOptions;
|
|
const hashFunction = outputOptions.hashFunction;
|
|
const hashDigest = outputOptions.hashDigest;
|
|
const hashDigestLength = outputOptions.hashDigestLength;
|
|
const hash = crypto.createHash(hashFunction);
|
|
hash.update(this.fullHash);
|
|
hash.update(update);
|
|
this.fullHash = hash.digest(hashDigest);
|
|
this.hash = this.fullHash.substr(0, hashDigestLength);
|
|
}
|
|
|
|
createModuleAssets() {
|
|
for(let i = 0; i < this.modules.length; i++) {
|
|
const module = this.modules[i];
|
|
if(module.assets) {
|
|
Object.keys(module.assets).forEach((assetName) => {
|
|
const fileName = this.getPath(assetName);
|
|
this.assets[fileName] = module.assets[assetName];
|
|
this.applyPlugins2("module-asset", module, fileName);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
createChunkAssets() {
|
|
const outputOptions = this.outputOptions;
|
|
const filename = outputOptions.filename;
|
|
const chunkFilename = outputOptions.chunkFilename;
|
|
for(let i = 0; i < this.chunks.length; i++) {
|
|
const chunk = this.chunks[i];
|
|
chunk.files = [];
|
|
const chunkHash = chunk.hash;
|
|
let source;
|
|
let file;
|
|
const filenameTemplate = chunk.filenameTemplate ? chunk.filenameTemplate :
|
|
chunk.isInitial() ? filename :
|
|
chunkFilename;
|
|
try {
|
|
const useChunkHash = !chunk.hasRuntime() || (this.mainTemplate.useChunkHash && this.mainTemplate.useChunkHash(chunk));
|
|
const usedHash = useChunkHash ? chunkHash : this.fullHash;
|
|
const cacheName = "c" + chunk.id;
|
|
if(this.cache && this.cache[cacheName] && this.cache[cacheName].hash === usedHash) {
|
|
source = this.cache[cacheName].source;
|
|
} else {
|
|
if(chunk.hasRuntime()) {
|
|
source = this.mainTemplate.render(this.hash, chunk, this.moduleTemplate, this.dependencyTemplates);
|
|
} else {
|
|
source = this.chunkTemplate.render(chunk, this.moduleTemplate, this.dependencyTemplates);
|
|
}
|
|
if(this.cache) {
|
|
this.cache[cacheName] = {
|
|
hash: usedHash,
|
|
source: source = (source instanceof CachedSource ? source : new CachedSource(source))
|
|
};
|
|
}
|
|
}
|
|
file = this.getPath(filenameTemplate, {
|
|
noChunkHash: !useChunkHash,
|
|
chunk
|
|
});
|
|
if(this.assets[file])
|
|
throw new Error(`Conflict: Multiple assets emit to the same filename ${file}`);
|
|
this.assets[file] = source;
|
|
chunk.files.push(file);
|
|
this.applyPlugins2("chunk-asset", chunk, file);
|
|
} catch(err) {
|
|
this.errors.push(new ChunkRenderError(chunk, file || filenameTemplate, err));
|
|
}
|
|
}
|
|
}
|
|
|
|
getPath(filename, data) {
|
|
data = data || {};
|
|
data.hash = data.hash || this.hash;
|
|
return this.mainTemplate.applyPluginsWaterfall("asset-path", filename, data);
|
|
}
|
|
|
|
createChildCompiler(name, outputOptions, plugins) {
|
|
const idx = (this.childrenCounters[name] || 0);
|
|
this.childrenCounters[name] = idx + 1;
|
|
return this.compiler.createChildCompiler(this, name, idx, outputOptions, plugins);
|
|
}
|
|
|
|
checkConstraints() {
|
|
const usedIds = {};
|
|
|
|
const modules = this.modules;
|
|
for(let indexModule = 0; indexModule < modules.length; indexModule++) {
|
|
const moduleId = modules[indexModule].id;
|
|
|
|
if(usedIds[moduleId])
|
|
throw new Error(`checkConstraints: duplicate module id ${moduleId}`);
|
|
}
|
|
|
|
const chunks = this.chunks;
|
|
for(let indexChunk = 0; indexChunk < chunks.length; indexChunk++) {
|
|
const chunk = chunks[indexChunk];
|
|
|
|
if(chunks.indexOf(chunk) !== indexChunk)
|
|
throw new Error(`checkConstraints: duplicate chunk in compilation ${chunk.debugId}`);
|
|
chunk.checkConstraints();
|
|
}
|
|
}
|
|
}
|
|
|
|
module.exports = Compilation;
|