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Name	Size	Permission
debug	[ DIR ]	drwxr-xr-x
dependencies	[ DIR ]	drwxr-xr-x
logging	[ DIR ]	drwxr-xr-x
node	[ DIR ]	drwxr-xr-x
optimize	[ DIR ]	drwxr-xr-x
performance	[ DIR ]	drwxr-xr-x
util	[ DIR ]	drwxr-xr-x
wasm	[ DIR ]	drwxr-xr-x
web	[ DIR ]	drwxr-xr-x
webworker	[ DIR ]	drwxr-xr-x
APIPlugin.js	2.2 KB	-rw-r--r--
AbstractMethodError.js	1008 B	-rw-r--r--
AmdMainTemplatePlugin.js	2.52 KB	-rw-r--r--
AsyncDependenciesBlock.js	2.42 KB	-rw-r--r--
AsyncDependencyToInitialChunkE...	871 B	-rw-r--r--
AutomaticPrefetchPlugin.js	1.38 KB	-rw-r--r--
BannerPlugin.js	2.86 KB	-rw-r--r--
BasicEvaluatedExpression.js	4.55 KB	-rw-r--r--
CachePlugin.js	2.8 KB	-rw-r--r--
CaseSensitiveModulesWarning.js	1.87 KB	-rw-r--r--
Chunk.js	22.56 KB	-rw-r--r--
ChunkGroup.js	12.12 KB	-rw-r--r--
ChunkRenderError.js	708 B	-rw-r--r--
ChunkTemplate.js	2.46 KB	-rw-r--r--
CommentCompilationWarning.js	748 B	-rw-r--r--
CommonJsStuffPlugin.js	3.2 KB	-rw-r--r--
CompatibilityPlugin.js	1.98 KB	-rw-r--r--
Compilation.js	66.14 KB	-rw-r--r--
Compiler.js	21.24 KB	-rw-r--r--
ConcurrentCompilationError.js	492 B	-rw-r--r--
ConstPlugin.js	9.79 KB	-rw-r--r--
ContextExclusionPlugin.js	721 B	-rw-r--r--
ContextModule.js	24.03 KB	-rw-r--r--
ContextModuleFactory.js	6.45 KB	-rw-r--r--
ContextReplacementPlugin.js	4.03 KB	-rw-r--r--
DefinePlugin.js	7.92 KB	-rw-r--r--
DelegatedModule.js	2.77 KB	-rw-r--r--
DelegatedModuleFactoryPlugin.j...	2.32 KB	-rw-r--r--
DelegatedPlugin.js	1.02 KB	-rw-r--r--
DependenciesBlock.js	3.27 KB	-rw-r--r--
DependenciesBlockVariable.js	2.14 KB	-rw-r--r--
Dependency.js	1.97 KB	-rw-r--r--
DllEntryPlugin.js	1.24 KB	-rw-r--r--
DllModule.js	1.09 KB	-rw-r--r--
DllModuleFactory.js	536 B	-rw-r--r--
DllPlugin.js	1.4 KB	-rw-r--r--
DllReferencePlugin.js	4.88 KB	-rw-r--r--
DynamicEntryPlugin.js	2.76 KB	-rw-r--r--
EntryModuleNotFoundError.js	475 B	-rw-r--r--
EntryOptionPlugin.js	1.46 KB	-rw-r--r--
Entrypoint.js	1.79 KB	-rw-r--r--
EnvironmentPlugin.js	2.01 KB	-rw-r--r--
ErrorHelpers.js	1.41 KB	-rw-r--r--
EvalDevToolModulePlugin.js	792 B	-rw-r--r--
EvalDevToolModuleTemplatePlugi...	1.64 KB	-rw-r--r--
EvalSourceMapDevToolModuleTemp...	3.35 KB	-rw-r--r--
EvalSourceMapDevToolPlugin.js	1.04 KB	-rw-r--r--
ExportPropertyMainTemplatePlug...	1.31 KB	-rw-r--r--
ExtendedAPIPlugin.js	2.43 KB	-rw-r--r--
ExternalModule.js	4.29 KB	-rw-r--r--
ExternalModuleFactoryPlugin.js	2.92 KB	-rw-r--r--
ExternalsPlugin.js	546 B	-rw-r--r--
FlagAllModulesAsUsedPlugin.js	788 B	-rw-r--r--
FlagDependencyExportsPlugin.js	4.89 KB	-rw-r--r--
FlagDependencyUsagePlugin.js	3.35 KB	-rw-r--r--
FlagInitialModulesAsUsedPlugin...	799 B	-rw-r--r--
FunctionModulePlugin.js	463 B	-rw-r--r--
FunctionModuleTemplatePlugin.j...	3.27 KB	-rw-r--r--
Generator.js	1.71 KB	-rw-r--r--
GraphHelpers.js	1.93 KB	-rw-r--r--
HarmonyLinkingError.js	408 B	-rw-r--r--
HashedModuleIdsPlugin.js	1.69 KB	-rw-r--r--
HotModuleReplacement.runtime.j...	18.7 KB	-rw-r--r--
HotModuleReplacementPlugin.js	12.61 KB	-rw-r--r--
HotUpdateChunk.js	324 B	-rw-r--r--
HotUpdateChunkTemplate.js	1.59 KB	-rw-r--r--
IgnorePlugin.js	2.38 KB	-rw-r--r--
JavascriptGenerator.js	5.73 KB	-rw-r--r--
JavascriptModulesPlugin.js	5.29 KB	-rw-r--r--
JsonGenerator.js	1.56 KB	-rw-r--r--
JsonModulesPlugin.js	698 B	-rw-r--r--
JsonParser.js	758 B	-rw-r--r--
LibManifestPlugin.js	2.24 KB	-rw-r--r--
LibraryTemplatePlugin.js	5.62 KB	-rw-r--r--
LoaderOptionsPlugin.js	1.47 KB	-rw-r--r--
LoaderTargetPlugin.js	480 B	-rw-r--r--
MainTemplate.js	16.97 KB	-rw-r--r--
MemoryOutputFileSystem.js	139 B	-rw-r--r--
Module.js	10.13 KB	-rw-r--r--
ModuleBuildError.js	1.2 KB	-rw-r--r--
ModuleDependencyError.js	812 B	-rw-r--r--
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ModuleError.js	843 B	-rw-r--r--
ModuleFilenameHelpers.js	5.41 KB	-rw-r--r--
ModuleNotFoundError.js	516 B	-rw-r--r--
ModuleParseError.js	1.95 KB	-rw-r--r--
ModuleReason.js	1.16 KB	-rw-r--r--
ModuleTemplate.js	1.97 KB	-rw-r--r--
ModuleWarning.js	901 B	-rw-r--r--
MultiCompiler.js	7.23 KB	-rw-r--r--
MultiEntryPlugin.js	2.01 KB	-rw-r--r--
MultiModule.js	1.88 KB	-rw-r--r--
MultiModuleFactory.js	489 B	-rw-r--r--
MultiStats.js	2.17 KB	-rw-r--r--
MultiWatching.js	886 B	-rw-r--r--
NamedChunksPlugin.js	659 B	-rw-r--r--
NamedModulesPlugin.js	1.48 KB	-rw-r--r--
NoEmitOnErrorsPlugin.js	559 B	-rw-r--r--
NoModeWarning.js	720 B	-rw-r--r--
NodeStuffPlugin.js	3.23 KB	-rw-r--r--
NormalModule.js	14.88 KB	-rw-r--r--
NormalModuleFactory.js	13.51 KB	-rw-r--r--
NormalModuleReplacementPlugin....	1.25 KB	-rw-r--r--
NullFactory.js	217 B	-rw-r--r--
OptionsApply.js	200 B	-rw-r--r--
OptionsDefaulter.js	3.71 KB	-rw-r--r--
Parser.js	69.07 KB	-rw-r--r--
ParserHelpers.js	2.78 KB	-rw-r--r--
PrefetchPlugin.js	837 B	-rw-r--r--
ProgressPlugin.js	9.13 KB	-rw-r--r--
ProvidePlugin.js	2.34 KB	-rw-r--r--
RawModule.js	1.16 KB	-rw-r--r--
RecordIdsPlugin.js	6.36 KB	-rw-r--r--
RemovedPluginError.js	229 B	-rw-r--r--
RequestShortener.js	2.56 KB	-rw-r--r--
RequireJsStuffPlugin.js	1.76 KB	-rw-r--r--
ResolverFactory.js	2.29 KB	-rw-r--r--
RuleSet.js	11.83 KB	-rw-r--r--
RuntimeTemplate.js	9.25 KB	-rw-r--r--
SetVarMainTemplatePlugin.js	1.69 KB	-rw-r--r--
SingleEntryPlugin.js	1.45 KB	-rw-r--r--
SizeFormatHelpers.js	538 B	-rw-r--r--
SourceMapDevToolModuleOptionsP...	1.17 KB	-rw-r--r--
SourceMapDevToolPlugin.js	12.38 KB	-rw-r--r--
Stats.js	44.51 KB	-rw-r--r--
SystemMainTemplatePlugin.js	3.3 KB	-rw-r--r--
Template.js	7.96 KB	-rw-r--r--
TemplatedPathPlugin.js	5.69 KB	-rw-r--r--
UmdMainTemplatePlugin.js	8.57 KB	-rw-r--r--
UnsupportedFeatureWarning.js	809 B	-rw-r--r--
UseStrictPlugin.js	1.57 KB	-rw-r--r--
WarnCaseSensitiveModulesPlugin...	1016 B	-rw-r--r--
WarnNoModeSetPlugin.js	391 B	-rw-r--r--
WatchIgnorePlugin.js	2.32 KB	-rw-r--r--
Watching.js	4.79 KB	-rw-r--r--
WebpackError.js	660 B	-rw-r--r--
WebpackOptionsApply.js	18.87 KB	-rw-r--r--
WebpackOptionsDefaulter.js	11.76 KB	-rw-r--r--
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buildChunkGraph.js	20.79 KB	-rw-r--r--
compareLocations.js	1.29 KB	-rw-r--r--
formatLocation.js	2.01 KB	-rw-r--r--
validateSchema.js	1.55 KB	-rw-r--r--
webpack.js	7.79 KB	-rw-r--r--
webpack.web.js	942 B	-rw-r--r--

Code Editor : Compiler.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const parseJson = require("json-parse-better-errors");
const asyncLib = require("neo-async");
const path = require("path");
const { Source } = require("webpack-sources");
const util = require("util");
const {
	Tapable,
	SyncHook,
	SyncBailHook,
	AsyncParallelHook,
	AsyncSeriesHook
} = require("tapable");

const Compilation = require("./Compilation");
const Stats = require("./Stats");
const Watching = require("./Watching");
const NormalModuleFactory = require("./NormalModuleFactory");
const ContextModuleFactory = require("./ContextModuleFactory");
const ResolverFactory = require("./ResolverFactory");

const RequestShortener = require("./RequestShortener");
const { makePathsRelative } = require("./util/identifier");
const ConcurrentCompilationError = require("./ConcurrentCompilationError");
const { Logger } = require("./logging/Logger");

/** @typedef {import("../declarations/WebpackOptions").Entry} Entry */
/** @typedef {import("../declarations/WebpackOptions").WebpackOptions} WebpackOptions */

/**
 * @typedef {Object} CompilationParams
 * @property {NormalModuleFactory} normalModuleFactory
 * @property {ContextModuleFactory} contextModuleFactory
 * @property {Set<string>} compilationDependencies
 */

class Compiler extends Tapable {
	constructor(context) {
		super();
		this.hooks = {
			/** @type {SyncBailHook<Compilation>} */
			shouldEmit: new SyncBailHook(["compilation"]),
			/** @type {AsyncSeriesHook<Stats>} */
			done: new AsyncSeriesHook(["stats"]),
			/** @type {AsyncSeriesHook<>} */
			additionalPass: new AsyncSeriesHook([]),
			/** @type {AsyncSeriesHook<Compiler>} */
			beforeRun: new AsyncSeriesHook(["compiler"]),
			/** @type {AsyncSeriesHook<Compiler>} */
			run: new AsyncSeriesHook(["compiler"]),
			/** @type {AsyncSeriesHook<Compilation>} */
			emit: new AsyncSeriesHook(["compilation"]),
			/** @type {AsyncSeriesHook<string, Buffer>} */
			assetEmitted: new AsyncSeriesHook(["file", "content"]),
			/** @type {AsyncSeriesHook<Compilation>} */
			afterEmit: new AsyncSeriesHook(["compilation"]),

/** @type {SyncHook<Compilation, CompilationParams>} */
			thisCompilation: new SyncHook(["compilation", "params"]),
			/** @type {SyncHook<Compilation, CompilationParams>} */
			compilation: new SyncHook(["compilation", "params"]),
			/** @type {SyncHook<NormalModuleFactory>} */
			normalModuleFactory: new SyncHook(["normalModuleFactory"]),
			/** @type {SyncHook<ContextModuleFactory>}  */
			contextModuleFactory: new SyncHook(["contextModulefactory"]),

/** @type {AsyncSeriesHook<CompilationParams>} */
			beforeCompile: new AsyncSeriesHook(["params"]),
			/** @type {SyncHook<CompilationParams>} */
			compile: new SyncHook(["params"]),
			/** @type {AsyncParallelHook<Compilation>} */
			make: new AsyncParallelHook(["compilation"]),
			/** @type {AsyncSeriesHook<Compilation>} */
			afterCompile: new AsyncSeriesHook(["compilation"]),

/** @type {AsyncSeriesHook<Compiler>} */
			watchRun: new AsyncSeriesHook(["compiler"]),
			/** @type {SyncHook<Error>} */
			failed: new SyncHook(["error"]),
			/** @type {SyncHook<string, string>} */
			invalid: new SyncHook(["filename", "changeTime"]),
			/** @type {SyncHook} */
			watchClose: new SyncHook([]),

/** @type {SyncBailHook<string, string, any[]>} */
			infrastructureLog: new SyncBailHook(["origin", "type", "args"]),

// TODO the following hooks are weirdly located here
			// TODO move them for webpack 5
			/** @type {SyncHook} */
			environment: new SyncHook([]),
			/** @type {SyncHook} */
			afterEnvironment: new SyncHook([]),
			/** @type {SyncHook<Compiler>} */
			afterPlugins: new SyncHook(["compiler"]),
			/** @type {SyncHook<Compiler>} */
			afterResolvers: new SyncHook(["compiler"]),
			/** @type {SyncBailHook<string, Entry>} */
			entryOption: new SyncBailHook(["context", "entry"])
		};
		// TODO webpack 5 remove this
		this.hooks.infrastructurelog = this.hooks.infrastructureLog;

this._pluginCompat.tap("Compiler", options => {
			switch (options.name) {
				case "additional-pass":
				case "before-run":
				case "run":
				case "emit":
				case "after-emit":
				case "before-compile":
				case "make":
				case "after-compile":
				case "watch-run":
					options.async = true;
					break;
			}
		});

/** @type {string=} */
		this.name = undefined;
		/** @type {Compilation=} */
		this.parentCompilation = undefined;
		/** @type {string} */
		this.outputPath = "";

this.outputFileSystem = null;
		this.inputFileSystem = null;

/** @type {string|null} */
		this.recordsInputPath = null;
		/** @type {string|null} */
		this.recordsOutputPath = null;
		this.records = {};
		this.removedFiles = new Set();
		/** @type {Map<string, number>} */
		this.fileTimestamps = new Map();
		/** @type {Map<string, number>} */
		this.contextTimestamps = new Map();
		/** @type {ResolverFactory} */
		this.resolverFactory = new ResolverFactory();

this.infrastructureLogger = undefined;

// TODO remove in webpack 5
		this.resolvers = {
			normal: {
				plugins: util.deprecate((hook, fn) => {
					this.resolverFactory.plugin("resolver normal", resolver => {
						resolver.plugin(hook, fn);
					});
				}, "webpack: Using compiler.resolvers.normal is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver normal", resolver => {\n  resolver.plugin(/* … */);\n}); instead.'),
				apply: util.deprecate((...args) => {
					this.resolverFactory.plugin("resolver normal", resolver => {
						resolver.apply(...args);
					});
				}, "webpack: Using compiler.resolvers.normal is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver normal", resolver => {\n  resolver.apply(/* … */);\n}); instead.')
			},
			loader: {
				plugins: util.deprecate((hook, fn) => {
					this.resolverFactory.plugin("resolver loader", resolver => {
						resolver.plugin(hook, fn);
					});
				}, "webpack: Using compiler.resolvers.loader is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver loader", resolver => {\n  resolver.plugin(/* … */);\n}); instead.'),
				apply: util.deprecate((...args) => {
					this.resolverFactory.plugin("resolver loader", resolver => {
						resolver.apply(...args);
					});
				}, "webpack: Using compiler.resolvers.loader is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver loader", resolver => {\n  resolver.apply(/* … */);\n}); instead.')
			},
			context: {
				plugins: util.deprecate((hook, fn) => {
					this.resolverFactory.plugin("resolver context", resolver => {
						resolver.plugin(hook, fn);
					});
				}, "webpack: Using compiler.resolvers.context is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver context", resolver => {\n  resolver.plugin(/* … */);\n}); instead.'),
				apply: util.deprecate((...args) => {
					this.resolverFactory.plugin("resolver context", resolver => {
						resolver.apply(...args);
					});
				}, "webpack: Using compiler.resolvers.context is deprecated.\n" + 'Use compiler.resolverFactory.plugin("resolver context", resolver => {\n  resolver.apply(/* … */);\n}); instead.')
			}
		};

/** @type {WebpackOptions} */
		this.options = /** @type {WebpackOptions} */ ({});

this.context = context;

this.requestShortener = new RequestShortener(context);

/** @type {boolean} */
		this.running = false;

/** @type {boolean} */
		this.watchMode = false;

/** @private @type {WeakMap<Source, { sizeOnlySource: SizeOnlySource, writtenTo: Map<string, number> }>} */
		this._assetEmittingSourceCache = new WeakMap();
		/** @private @type {Map<string, number>} */
		this._assetEmittingWrittenFiles = new Map();
	}

/**
	 * @param {string | (function(): string)} name name of the logger, or function called once to get the logger name
	 * @returns {Logger} a logger with that name
	 */
	getInfrastructureLogger(name) {
		if (!name) {
			throw new TypeError(
				"Compiler.getInfrastructureLogger(name) called without a name"
			);
		}
		return new Logger((type, args) => {
			if (typeof name === "function") {
				name = name();
				if (!name) {
					throw new TypeError(
						"Compiler.getInfrastructureLogger(name) called with a function not returning a name"
					);
				}
			}
			if (this.hooks.infrastructureLog.call(name, type, args) === undefined) {
				if (this.infrastructureLogger !== undefined) {
					this.infrastructureLogger(name, type, args);
				}
			}
		});
	}

watch(watchOptions, handler) {
		if (this.running) return handler(new ConcurrentCompilationError());

this.running = true;
		this.watchMode = true;
		this.fileTimestamps = new Map();
		this.contextTimestamps = new Map();
		this.removedFiles = new Set();
		return new Watching(this, watchOptions, handler);
	}

run(callback) {
		if (this.running) return callback(new ConcurrentCompilationError());

const finalCallback = (err, stats) => {
			this.running = false;

if (err) {
				this.hooks.failed.call(err);
			}

if (callback !== undefined) return callback(err, stats);
		};

const startTime = Date.now();

this.running = true;

const onCompiled = (err, compilation) => {
			if (err) return finalCallback(err);

if (this.hooks.shouldEmit.call(compilation) === false) {
				const stats = new Stats(compilation);
				stats.startTime = startTime;
				stats.endTime = Date.now();
				this.hooks.done.callAsync(stats, err => {
					if (err) return finalCallback(err);
					return finalCallback(null, stats);
				});
				return;
			}

this.emitAssets(compilation, err => {
				if (err) return finalCallback(err);

if (compilation.hooks.needAdditionalPass.call()) {
					compilation.needAdditionalPass = true;

const stats = new Stats(compilation);
					stats.startTime = startTime;
					stats.endTime = Date.now();
					this.hooks.done.callAsync(stats, err => {
						if (err) return finalCallback(err);

this.hooks.additionalPass.callAsync(err => {
							if (err) return finalCallback(err);
							this.compile(onCompiled);
						});
					});
					return;
				}

this.emitRecords(err => {
					if (err) return finalCallback(err);

const stats = new Stats(compilation);
					stats.startTime = startTime;
					stats.endTime = Date.now();
					this.hooks.done.callAsync(stats, err => {
						if (err) return finalCallback(err);
						return finalCallback(null, stats);
					});
				});
			});
		};

this.hooks.beforeRun.callAsync(this, err => {
			if (err) return finalCallback(err);

this.hooks.run.callAsync(this, err => {
				if (err) return finalCallback(err);

this.readRecords(err => {
					if (err) return finalCallback(err);

this.compile(onCompiled);
				});
			});
		});
	}

runAsChild(callback) {
		this.compile((err, compilation) => {
			if (err) return callback(err);

this.parentCompilation.children.push(compilation);
			for (const { name, source, info } of compilation.getAssets()) {
				this.parentCompilation.emitAsset(name, source, info);
			}

const entries = Array.from(
				compilation.entrypoints.values(),
				ep => ep.chunks
			).reduce((array, chunks) => {
				return array.concat(chunks);
			}, []);

return callback(null, entries, compilation);
		});
	}

purgeInputFileSystem() {
		if (this.inputFileSystem && this.inputFileSystem.purge) {
			this.inputFileSystem.purge();
		}
	}

emitAssets(compilation, callback) {
		let outputPath;
		const emitFiles = err => {
			if (err) return callback(err);

asyncLib.forEachLimit(
				compilation.getAssets(),
				15,
				({ name: file, source }, callback) => {
					let targetFile = file;
					const queryStringIdx = targetFile.indexOf("?");
					if (queryStringIdx >= 0) {
						targetFile = targetFile.substr(0, queryStringIdx);
					}

const writeOut = err => {
						if (err) return callback(err);
						const targetPath = this.outputFileSystem.join(
							outputPath,
							targetFile
						);
						// TODO webpack 5 remove futureEmitAssets option and make it on by default
						if (this.options.output.futureEmitAssets) {
							// check if the target file has already been written by this Compiler
							const targetFileGeneration = this._assetEmittingWrittenFiles.get(
								targetPath
							);

// create an cache entry for this Source if not already existing
							let cacheEntry = this._assetEmittingSourceCache.get(source);
							if (cacheEntry === undefined) {
								cacheEntry = {
									sizeOnlySource: undefined,
									writtenTo: new Map()
								};
								this._assetEmittingSourceCache.set(source, cacheEntry);
							}

// if the target file has already been written
							if (targetFileGeneration !== undefined) {
								// check if the Source has been written to this target file
								const writtenGeneration = cacheEntry.writtenTo.get(targetPath);
								if (writtenGeneration === targetFileGeneration) {
									// if yes, we skip writing the file
									// as it's already there
									// (we assume one doesn't remove files while the Compiler is running)

compilation.updateAsset(file, cacheEntry.sizeOnlySource, {
										size: cacheEntry.sizeOnlySource.size()
									});

return callback();
								}
							}

// TODO webpack 5: if info.immutable check if file already exists in output
							// skip emitting if it's already there

// get the binary (Buffer) content from the Source
							/** @type {Buffer} */
							let content;
							if (typeof source.buffer === "function") {
								content = source.buffer();
							} else {
								const bufferOrString = source.source();
								if (Buffer.isBuffer(bufferOrString)) {
									content = bufferOrString;
								} else {
									content = Buffer.from(bufferOrString, "utf8");
								}
							}

// Create a replacement resource which only allows to ask for size
							// This allows to GC all memory allocated by the Source
							// (expect when the Source is stored in any other cache)
							cacheEntry.sizeOnlySource = new SizeOnlySource(content.length);
							compilation.updateAsset(file, cacheEntry.sizeOnlySource, {
								size: content.length
							});

// Write the file to output file system
							this.outputFileSystem.writeFile(targetPath, content, err => {
								if (err) return callback(err);

// information marker that the asset has been emitted
								compilation.emittedAssets.add(file);

// cache the information that the Source has been written to that location
								const newGeneration =
									targetFileGeneration === undefined
										? 1
										: targetFileGeneration + 1;
								cacheEntry.writtenTo.set(targetPath, newGeneration);
								this._assetEmittingWrittenFiles.set(targetPath, newGeneration);
								this.hooks.assetEmitted.callAsync(file, content, callback);
							});
						} else {
							if (source.existsAt === targetPath) {
								source.emitted = false;
								return callback();
							}
							let content = source.source();

if (!Buffer.isBuffer(content)) {
								content = Buffer.from(content, "utf8");
							}

source.existsAt = targetPath;
							source.emitted = true;
							this.outputFileSystem.writeFile(targetPath, content, err => {
								if (err) return callback(err);
								this.hooks.assetEmitted.callAsync(file, content, callback);
							});
						}
					};

if (targetFile.match(/\/|\\/)) {
						const dir = path.dirname(targetFile);
						this.outputFileSystem.mkdirp(
							this.outputFileSystem.join(outputPath, dir)
						).then(() => {writeOut()}).catch((er) => {writeOut(er)});
					} else {
						writeOut();
					}
				},
				err => {
					if (err) return callback(err);

this.hooks.afterEmit.callAsync(compilation, err => {
						if (err) return callback(err);

return callback();
					});
				}
			);
		};

this.hooks.emit.callAsync(compilation, err => {
			if (err) return callback(err);
			outputPath = compilation.getPath(this.outputPath);
			this.outputFileSystem.mkdirp(outputPath).then(() => {emitFiles()}).catch(er => {throw er});
		});
	}

emitRecords(callback) {
		if (!this.recordsOutputPath) return callback();
		const idx1 = this.recordsOutputPath.lastIndexOf("/");
		const idx2 = this.recordsOutputPath.lastIndexOf("\\");
		let recordsOutputPathDirectory = null;
		if (idx1 > idx2) {
			recordsOutputPathDirectory = this.recordsOutputPath.substr(0, idx1);
		} else if (idx1 < idx2) {
			recordsOutputPathDirectory = this.recordsOutputPath.substr(0, idx2);
		}

const writeFile = () => {
			this.outputFileSystem.writeFile(
				this.recordsOutputPath,
				JSON.stringify(this.records, undefined, 2),
				callback
			);
		};

if (!recordsOutputPathDirectory) {
			return writeFile();
		}
		this.outputFileSystem.mkdirp(recordsOutputPathDirectory).then(() => {
			writeFile();
		}).catch( err => {
			return callback(err);
		});
	}

readRecords(callback) {
		if (!this.recordsInputPath) {
			this.records = {};
			return callback();
		}
		this.inputFileSystem.stat(this.recordsInputPath, err => {
			// It doesn't exist
			// We can ignore this.
			if (err) return callback();

this.inputFileSystem.readFile(this.recordsInputPath, (err, content) => {
				if (err) return callback(err);

try {
					this.records = parseJson(content.toString("utf-8"));
				} catch (e) {
					e.message = "Cannot parse records: " + e.message;
					return callback(e);
				}

return callback();
			});
		});
	}

createChildCompiler(
		compilation,
		compilerName,
		compilerIndex,
		outputOptions,
		plugins
	) {
		const childCompiler = new Compiler(this.context);
		if (Array.isArray(plugins)) {
			for (const plugin of plugins) {
				plugin.apply(childCompiler);
			}
		}
		for (const name in this.hooks) {
			if (
				![
					"make",
					"compile",
					"emit",
					"afterEmit",
					"invalid",
					"done",
					"thisCompilation"
				].includes(name)
			) {
				if (childCompiler.hooks[name]) {
					childCompiler.hooks[name].taps = this.hooks[name].taps.slice();
				}
			}
		}
		childCompiler.name = compilerName;
		childCompiler.outputPath = this.outputPath;
		childCompiler.inputFileSystem = this.inputFileSystem;
		childCompiler.outputFileSystem = null;
		childCompiler.resolverFactory = this.resolverFactory;
		childCompiler.fileTimestamps = this.fileTimestamps;
		childCompiler.contextTimestamps = this.contextTimestamps;

childCompiler.options = Object.create(this.options);
		childCompiler.options.output = Object.create(childCompiler.options.output);
		for (const name in outputOptions) {
			childCompiler.options.output[name] = outputOptions[name];
		}
		childCompiler.parentCompilation = compilation;

compilation.hooks.childCompiler.call(
			childCompiler,
			compilerName,
			compilerIndex
		);

return childCompiler;
	}

isChild() {
		return !!this.parentCompilation;
	}

createCompilation() {
		return new Compilation(this);
	}

newCompilation(params) {
		const compilation = this.createCompilation();
		compilation.fileTimestamps = this.fileTimestamps;
		compilation.contextTimestamps = this.contextTimestamps;
		compilation.name = this.name;
		compilation.records = this.records;
		compilation.compilationDependencies = params.compilationDependencies;
		this.hooks.thisCompilation.call(compilation, params);
		this.hooks.compilation.call(compilation, params);
		return compilation;
	}

createNormalModuleFactory() {
		const normalModuleFactory = new NormalModuleFactory(
			this.options.context,
			this.resolverFactory,
			this.options.module || {}
		);
		this.hooks.normalModuleFactory.call(normalModuleFactory);
		return normalModuleFactory;
	}

createContextModuleFactory() {
		const contextModuleFactory = new ContextModuleFactory(this.resolverFactory);
		this.hooks.contextModuleFactory.call(contextModuleFactory);
		return contextModuleFactory;
	}

newCompilationParams() {
		const params = {
			normalModuleFactory: this.createNormalModuleFactory(),
			contextModuleFactory: this.createContextModuleFactory(),
			compilationDependencies: new Set()
		};
		return params;
	}

compile(callback) {
		const params = this.newCompilationParams();
		this.hooks.beforeCompile.callAsync(params, err => {
			if (err) return callback(err);

this.hooks.compile.call(params);

const compilation = this.newCompilation(params);

this.hooks.make.callAsync(compilation, err => {
				if (err) return callback(err);

compilation.finish(err => {
					if (err) return callback(err);

compilation.seal(err => {
						if (err) return callback(err);

this.hooks.afterCompile.callAsync(compilation, err => {
							if (err) return callback(err);

return callback(null, compilation);
						});
					});
				});
			});
		});
	}
}

module.exports = Compiler;

class SizeOnlySource extends Source {
	constructor(size) {
		super();
		this._size = size;
	}

_error() {
		return new Error(
			"Content and Map of this Source is no longer available (only size() is supported)"
		);
	}

size() {
		return this._size;
	}

/**
	 * @param {any} options options
	 * @returns {string} the source
	 */
	source(options) {
		throw this._error();
	}

node() {
		throw this._error();
	}

listMap() {
		throw this._error();
	}

map() {
		throw this._error();
	}

listNode() {
		throw this._error();
	}

updateHash() {
		throw this._error();
	}
}

${this.title}

Code Editor : Compiler.js