660 lines
18 KiB
JavaScript
660 lines
18 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const asyncLib = require("neo-async");
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const { SyncHook, MultiHook } = require("tapable");
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const ConcurrentCompilationError = require("./ConcurrentCompilationError");
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const MultiStats = require("./MultiStats");
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const MultiWatching = require("./MultiWatching");
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const WebpackError = require("./WebpackError");
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const ArrayQueue = require("./util/ArrayQueue");
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/** @template T @typedef {import("tapable").AsyncSeriesHook<T>} AsyncSeriesHook<T> */
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/** @template T @template R @typedef {import("tapable").SyncBailHook<T, R>} SyncBailHook<T, R> */
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/** @typedef {import("../declarations/WebpackOptions").WatchOptions} WatchOptions */
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./Stats")} Stats */
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/** @typedef {import("./Watching")} Watching */
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/** @typedef {import("./logging/Logger").Logger} Logger */
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/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
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/** @typedef {import("./util/fs").IntermediateFileSystem} IntermediateFileSystem */
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/** @typedef {import("./util/fs").OutputFileSystem} OutputFileSystem */
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/** @typedef {import("./util/fs").WatchFileSystem} WatchFileSystem */
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/**
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* @template T
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* @callback Callback
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* @param {Error | null} err
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* @param {T=} result
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*/
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/**
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* @callback RunWithDependenciesHandler
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* @param {Compiler} compiler
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* @param {Callback<MultiStats>} callback
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*/
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/**
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* @typedef {object} MultiCompilerOptions
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* @property {number=} parallelism how many Compilers are allows to run at the same time in parallel
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*/
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module.exports = class MultiCompiler {
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/**
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* @param {Compiler[] | Record<string, Compiler>} compilers child compilers
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* @param {MultiCompilerOptions} options options
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*/
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constructor(compilers, options) {
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if (!Array.isArray(compilers)) {
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/** @type {Compiler[]} */
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compilers = Object.keys(compilers).map(name => {
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/** @type {Record<string, Compiler>} */
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(compilers)[name].name = name;
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return /** @type {Record<string, Compiler>} */ (compilers)[name];
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});
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}
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this.hooks = Object.freeze({
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/** @type {SyncHook<[MultiStats]>} */
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done: new SyncHook(["stats"]),
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/** @type {MultiHook<SyncHook<[string | null, number]>>} */
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invalid: new MultiHook(compilers.map(c => c.hooks.invalid)),
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/** @type {MultiHook<AsyncSeriesHook<[Compiler]>>} */
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run: new MultiHook(compilers.map(c => c.hooks.run)),
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/** @type {SyncHook<[]>} */
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watchClose: new SyncHook([]),
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/** @type {MultiHook<AsyncSeriesHook<[Compiler]>>} */
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watchRun: new MultiHook(compilers.map(c => c.hooks.watchRun)),
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/** @type {MultiHook<SyncBailHook<[string, string, any[]], true>>} */
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infrastructureLog: new MultiHook(
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compilers.map(c => c.hooks.infrastructureLog)
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)
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});
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this.compilers = compilers;
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/** @type {MultiCompilerOptions} */
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this._options = {
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parallelism: options.parallelism || Infinity
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};
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/** @type {WeakMap<Compiler, string[]>} */
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this.dependencies = new WeakMap();
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this.running = false;
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/** @type {(Stats | null)[]} */
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const compilerStats = this.compilers.map(() => null);
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let doneCompilers = 0;
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for (let index = 0; index < this.compilers.length; index++) {
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const compiler = this.compilers[index];
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const compilerIndex = index;
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let compilerDone = false;
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// eslint-disable-next-line no-loop-func
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compiler.hooks.done.tap("MultiCompiler", stats => {
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if (!compilerDone) {
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compilerDone = true;
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doneCompilers++;
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}
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compilerStats[compilerIndex] = stats;
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if (doneCompilers === this.compilers.length) {
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this.hooks.done.call(
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new MultiStats(/** @type {Stats[]} */ (compilerStats))
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);
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}
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});
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// eslint-disable-next-line no-loop-func
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compiler.hooks.invalid.tap("MultiCompiler", () => {
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if (compilerDone) {
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compilerDone = false;
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doneCompilers--;
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}
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});
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}
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this._validateCompilersOptions();
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}
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_validateCompilersOptions() {
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if (this.compilers.length < 2) return;
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/**
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* @param {Compiler} compiler compiler
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* @param {WebpackError} warning warning
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*/
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const addWarning = (compiler, warning) => {
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compiler.hooks.thisCompilation.tap("MultiCompiler", compilation => {
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compilation.warnings.push(warning);
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});
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};
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const cacheNames = new Set();
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for (const compiler of this.compilers) {
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if (compiler.options.cache && "name" in compiler.options.cache) {
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const name = compiler.options.cache.name;
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if (cacheNames.has(name)) {
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addWarning(
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compiler,
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new WebpackError(
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`${
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compiler.name
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? `Compiler with name "${compiler.name}" doesn't use unique cache name. `
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: ""
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}Please set unique "cache.name" option. Name "${name}" already used.`
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)
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);
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} else {
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cacheNames.add(name);
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}
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}
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}
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}
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get options() {
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return Object.assign(
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this.compilers.map(c => c.options),
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this._options
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);
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}
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get outputPath() {
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let commonPath = this.compilers[0].outputPath;
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for (const compiler of this.compilers) {
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while (
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compiler.outputPath.indexOf(commonPath) !== 0 &&
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/[/\\]/.test(commonPath)
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) {
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commonPath = commonPath.replace(/[/\\][^/\\]*$/, "");
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}
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}
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if (!commonPath && this.compilers[0].outputPath[0] === "/") return "/";
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return commonPath;
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}
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get inputFileSystem() {
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throw new Error("Cannot read inputFileSystem of a MultiCompiler");
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}
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/**
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* @param {InputFileSystem} value the new input file system
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*/
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set inputFileSystem(value) {
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for (const compiler of this.compilers) {
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compiler.inputFileSystem = value;
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}
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}
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get outputFileSystem() {
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throw new Error("Cannot read outputFileSystem of a MultiCompiler");
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}
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/**
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* @param {OutputFileSystem} value the new output file system
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*/
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set outputFileSystem(value) {
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for (const compiler of this.compilers) {
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compiler.outputFileSystem = value;
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}
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}
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get watchFileSystem() {
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throw new Error("Cannot read watchFileSystem of a MultiCompiler");
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}
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/**
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* @param {WatchFileSystem} value the new watch file system
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*/
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set watchFileSystem(value) {
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for (const compiler of this.compilers) {
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compiler.watchFileSystem = value;
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}
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}
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/**
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* @param {IntermediateFileSystem} value the new intermediate file system
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*/
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set intermediateFileSystem(value) {
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for (const compiler of this.compilers) {
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compiler.intermediateFileSystem = value;
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}
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}
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get intermediateFileSystem() {
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throw new Error("Cannot read outputFileSystem of a MultiCompiler");
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}
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/**
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* @param {string | (function(): string)} name name of the logger, or function called once to get the logger name
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* @returns {Logger} a logger with that name
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*/
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getInfrastructureLogger(name) {
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return this.compilers[0].getInfrastructureLogger(name);
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}
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/**
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* @param {Compiler} compiler the child compiler
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* @param {string[]} dependencies its dependencies
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* @returns {void}
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*/
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setDependencies(compiler, dependencies) {
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this.dependencies.set(compiler, dependencies);
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}
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/**
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* @param {Callback<MultiStats>} callback signals when the validation is complete
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* @returns {boolean} true if the dependencies are valid
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*/
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validateDependencies(callback) {
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/** @type {Set<{source: Compiler, target: Compiler}>} */
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const edges = new Set();
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/** @type {string[]} */
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const missing = [];
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/**
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* @param {Compiler} compiler compiler
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* @returns {boolean} target was found
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*/
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const targetFound = compiler => {
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for (const edge of edges) {
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if (edge.target === compiler) {
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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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* @param {{source: Compiler, target: Compiler}} e1 edge 1
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* @param {{source: Compiler, target: Compiler}} e2 edge 2
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* @returns {number} result
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*/
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const sortEdges = (e1, e2) =>
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/** @type {string} */
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(e1.source.name).localeCompare(/** @type {string} */ (e2.source.name)) ||
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/** @type {string} */
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(e1.target.name).localeCompare(/** @type {string} */ (e2.target.name));
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for (const source of this.compilers) {
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const dependencies = this.dependencies.get(source);
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if (dependencies) {
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for (const dep of dependencies) {
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const target = this.compilers.find(c => c.name === dep);
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if (!target) {
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missing.push(dep);
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} else {
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edges.add({
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source,
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target
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});
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}
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}
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}
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}
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/** @type {string[]} */
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const errors = missing.map(m => `Compiler dependency \`${m}\` not found.`);
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const stack = this.compilers.filter(c => !targetFound(c));
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while (stack.length > 0) {
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const current = stack.pop();
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for (const edge of edges) {
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if (edge.source === current) {
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edges.delete(edge);
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const target = edge.target;
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if (!targetFound(target)) {
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stack.push(target);
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}
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}
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}
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}
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if (edges.size > 0) {
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/** @type {string[]} */
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const lines = Array.from(edges)
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.sort(sortEdges)
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.map(edge => `${edge.source.name} -> ${edge.target.name}`);
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lines.unshift("Circular dependency found in compiler dependencies.");
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errors.unshift(lines.join("\n"));
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}
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if (errors.length > 0) {
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const message = errors.join("\n");
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callback(new Error(message));
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return false;
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}
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return true;
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}
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// TODO webpack 6 remove
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/**
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* @deprecated This method should have been private
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* @param {Compiler[]} compilers the child compilers
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* @param {RunWithDependenciesHandler} fn a handler to run for each compiler
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* @param {Callback<MultiStats>} callback the compiler's handler
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* @returns {void}
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*/
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runWithDependencies(compilers, fn, callback) {
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const fulfilledNames = new Set();
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let remainingCompilers = compilers;
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/**
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* @param {string} d dependency
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* @returns {boolean} when dependency was fulfilled
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*/
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const isDependencyFulfilled = d => fulfilledNames.has(d);
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/**
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* @returns {Compiler[]} compilers
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*/
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const getReadyCompilers = () => {
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const readyCompilers = [];
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const list = remainingCompilers;
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remainingCompilers = [];
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for (const c of list) {
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const dependencies = this.dependencies.get(c);
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const ready =
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!dependencies || dependencies.every(isDependencyFulfilled);
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if (ready) {
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readyCompilers.push(c);
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} else {
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remainingCompilers.push(c);
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}
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}
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return readyCompilers;
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};
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/**
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* @param {Callback<MultiStats>} callback callback
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* @returns {void}
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*/
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const runCompilers = callback => {
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if (remainingCompilers.length === 0) return callback(null);
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asyncLib.map(
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getReadyCompilers(),
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(compiler, callback) => {
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fn(compiler, err => {
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if (err) return callback(err);
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fulfilledNames.add(compiler.name);
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runCompilers(callback);
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});
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},
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(err, results) => {
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callback(err, /** @type {TODO} */ (results));
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}
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);
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};
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runCompilers(callback);
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}
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/**
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* @template SetupResult
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* @param {function(Compiler, number, Callback<Stats>, function(): boolean, function(): void, function(): void): SetupResult} setup setup a single compiler
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* @param {function(Compiler, SetupResult, Callback<Stats>): void} run run/continue a single compiler
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* @param {Callback<MultiStats>} callback callback when all compilers are done, result includes Stats of all changed compilers
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* @returns {SetupResult[]} result of setup
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*/
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_runGraph(setup, run, callback) {
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/** @typedef {{ compiler: Compiler, setupResult: undefined | SetupResult, result: undefined | Stats, state: "pending" | "blocked" | "queued" | "starting" | "running" | "running-outdated" | "done", children: Node[], parents: Node[] }} Node */
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// State transitions for nodes:
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// -> blocked (initial)
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// blocked -> starting [running++] (when all parents done)
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// queued -> starting [running++] (when processing the queue)
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// starting -> running (when run has been called)
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// running -> done [running--] (when compilation is done)
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// done -> pending (when invalidated from file change)
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// pending -> blocked [add to queue] (when invalidated from aggregated changes)
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// done -> blocked [add to queue] (when invalidated, from parent invalidation)
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// running -> running-outdated (when invalidated, either from change or parent invalidation)
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// running-outdated -> blocked [running--] (when compilation is done)
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/** @type {Node[]} */
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const nodes = this.compilers.map(compiler => ({
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compiler,
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setupResult: undefined,
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result: undefined,
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state: "blocked",
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children: [],
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parents: []
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}));
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/** @type {Map<string, Node>} */
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const compilerToNode = new Map();
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for (const node of nodes) {
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compilerToNode.set(/** @type {string} */ (node.compiler.name), node);
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}
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for (const node of nodes) {
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const dependencies = this.dependencies.get(node.compiler);
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if (!dependencies) continue;
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for (const dep of dependencies) {
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const parent = /** @type {Node} */ (compilerToNode.get(dep));
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node.parents.push(parent);
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parent.children.push(node);
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}
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}
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/** @type {ArrayQueue<Node>} */
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const queue = new ArrayQueue();
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for (const node of nodes) {
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if (node.parents.length === 0) {
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node.state = "queued";
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queue.enqueue(node);
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}
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}
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let errored = false;
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let running = 0;
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const parallelism = /** @type {number} */ (this._options.parallelism);
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/**
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* @param {Node} node node
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* @param {(Error | null)=} err error
|
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* @param {Stats=} stats result
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* @returns {void}
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*/
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const nodeDone = (node, err, stats) => {
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if (errored) return;
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if (err) {
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errored = true;
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return asyncLib.each(
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nodes,
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(node, callback) => {
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if (node.compiler.watching) {
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node.compiler.watching.close(callback);
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} else {
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callback();
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}
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},
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() => callback(err)
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);
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}
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node.result = stats;
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running--;
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if (node.state === "running") {
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node.state = "done";
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for (const child of node.children) {
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if (child.state === "blocked") queue.enqueue(child);
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}
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} else if (node.state === "running-outdated") {
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node.state = "blocked";
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queue.enqueue(node);
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}
|
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|
processQueue();
|
||
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|
};
|
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|
|
/**
|
||
|
|
* @param {Node} node node
|
||
|
|
* @returns {void}
|
||
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|
*/
|
||
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|
const nodeInvalidFromParent = node => {
|
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|
if (node.state === "done") {
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node.state = "blocked";
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} else if (node.state === "running") {
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||
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|
node.state = "running-outdated";
|
||
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}
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||
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|
for (const child of node.children) {
|
||
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nodeInvalidFromParent(child);
|
||
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|
}
|
||
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|
};
|
||
|
|
/**
|
||
|
|
* @param {Node} node node
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
const nodeInvalid = node => {
|
||
|
|
if (node.state === "done") {
|
||
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|
node.state = "pending";
|
||
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} else if (node.state === "running") {
|
||
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|
node.state = "running-outdated";
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|
}
|
||
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|
for (const child of node.children) {
|
||
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|
nodeInvalidFromParent(child);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
/**
|
||
|
|
* @param {Node} node node
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
const nodeChange = node => {
|
||
|
|
nodeInvalid(node);
|
||
|
|
if (node.state === "pending") {
|
||
|
|
node.state = "blocked";
|
||
|
|
}
|
||
|
|
if (node.state === "blocked") {
|
||
|
|
queue.enqueue(node);
|
||
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|
processQueue();
|
||
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|
}
|
||
|
|
};
|
||
|
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|
||
|
|
/** @type {SetupResult[]} */
|
||
|
|
const setupResults = [];
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||
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|
for (const [i, node] of nodes.entries()) {
|
||
|
|
setupResults.push(
|
||
|
|
(node.setupResult = setup(
|
||
|
|
node.compiler,
|
||
|
|
i,
|
||
|
|
nodeDone.bind(null, node),
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||
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|
() => node.state !== "starting" && node.state !== "running",
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||
|
|
() => nodeChange(node),
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||
|
|
() => nodeInvalid(node)
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||
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|
))
|
||
|
|
);
|
||
|
|
}
|
||
|
|
let processing = true;
|
||
|
|
const processQueue = () => {
|
||
|
|
if (processing) return;
|
||
|
|
processing = true;
|
||
|
|
process.nextTick(processQueueWorker);
|
||
|
|
};
|
||
|
|
const processQueueWorker = () => {
|
||
|
|
// eslint-disable-next-line no-unmodified-loop-condition
|
||
|
|
while (running < parallelism && queue.length > 0 && !errored) {
|
||
|
|
const node = /** @type {Node} */ (queue.dequeue());
|
||
|
|
if (
|
||
|
|
node.state === "queued" ||
|
||
|
|
(node.state === "blocked" &&
|
||
|
|
node.parents.every(p => p.state === "done"))
|
||
|
|
) {
|
||
|
|
running++;
|
||
|
|
node.state = "starting";
|
||
|
|
run(
|
||
|
|
node.compiler,
|
||
|
|
/** @type {SetupResult} */ (node.setupResult),
|
||
|
|
nodeDone.bind(null, node)
|
||
|
|
);
|
||
|
|
node.state = "running";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
processing = false;
|
||
|
|
if (
|
||
|
|
!errored &&
|
||
|
|
running === 0 &&
|
||
|
|
nodes.every(node => node.state === "done")
|
||
|
|
) {
|
||
|
|
const stats = [];
|
||
|
|
for (const node of nodes) {
|
||
|
|
const result = node.result;
|
||
|
|
if (result) {
|
||
|
|
node.result = undefined;
|
||
|
|
stats.push(result);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (stats.length > 0) {
|
||
|
|
callback(null, new MultiStats(stats));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
processQueueWorker();
|
||
|
|
return setupResults;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {WatchOptions|WatchOptions[]} watchOptions the watcher's options
|
||
|
|
* @param {Callback<MultiStats>} handler signals when the call finishes
|
||
|
|
* @returns {MultiWatching} a compiler watcher
|
||
|
|
*/
|
||
|
|
watch(watchOptions, handler) {
|
||
|
|
if (this.running) {
|
||
|
|
return handler(new ConcurrentCompilationError());
|
||
|
|
}
|
||
|
|
this.running = true;
|
||
|
|
|
||
|
|
if (this.validateDependencies(handler)) {
|
||
|
|
const watchings = this._runGraph(
|
||
|
|
(compiler, idx, callback, isBlocked, setChanged, setInvalid) => {
|
||
|
|
const watching = compiler.watch(
|
||
|
|
Array.isArray(watchOptions) ? watchOptions[idx] : watchOptions,
|
||
|
|
callback
|
||
|
|
);
|
||
|
|
if (watching) {
|
||
|
|
watching._onInvalid = setInvalid;
|
||
|
|
watching._onChange = setChanged;
|
||
|
|
watching._isBlocked = isBlocked;
|
||
|
|
}
|
||
|
|
return watching;
|
||
|
|
},
|
||
|
|
(compiler, watching, callback) => {
|
||
|
|
if (compiler.watching !== watching) return;
|
||
|
|
if (!watching.running) watching.invalidate();
|
||
|
|
},
|
||
|
|
handler
|
||
|
|
);
|
||
|
|
return new MultiWatching(watchings, this);
|
||
|
|
}
|
||
|
|
|
||
|
|
return new MultiWatching([], this);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Callback<MultiStats>} callback signals when the call finishes
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
run(callback) {
|
||
|
|
if (this.running) {
|
||
|
|
return callback(new ConcurrentCompilationError());
|
||
|
|
}
|
||
|
|
this.running = true;
|
||
|
|
|
||
|
|
if (this.validateDependencies(callback)) {
|
||
|
|
this._runGraph(
|
||
|
|
() => {},
|
||
|
|
(compiler, setupResult, callback) => compiler.run(callback),
|
||
|
|
(err, stats) => {
|
||
|
|
this.running = false;
|
||
|
|
|
||
|
|
if (callback !== undefined) {
|
||
|
|
return callback(err, stats);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
purgeInputFileSystem() {
|
||
|
|
for (const compiler of this.compilers) {
|
||
|
|
if (compiler.inputFileSystem && compiler.inputFileSystem.purge) {
|
||
|
|
compiler.inputFileSystem.purge();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {Callback<void>} callback signals when the compiler closes
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
close(callback) {
|
||
|
|
asyncLib.each(
|
||
|
|
this.compilers,
|
||
|
|
(compiler, callback) => {
|
||
|
|
compiler.close(callback);
|
||
|
|
},
|
||
|
|
error => {
|
||
|
|
callback(error);
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
};
|