Gecko [ unitednationsplay.com ]

Name	Size	Permission	Date
asset	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
async-modules	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
cache	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
config	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
container	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
css	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
debug	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
dependencies	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
electron	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
errors	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
esm	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
hmr	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
ids	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
javascript	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
json	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
library	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
logging	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
node	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
optimize	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
performance	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
prefetch	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
rules	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
runtime	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
schemes	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
serialization	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
sharing	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
stats	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
util	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
wasm	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
wasm-async	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
wasm-sync	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
web	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
webworker	[ DIR ]	drwxrwxr-x	2022-08-30 11:49
APIPlugin.js	6.72 KB	-rw-rw-r--	2022-08-30 11:49
AbstractMethodError.js	1.11 KB	-rw-rw-r--	2022-08-30 11:49
AsyncDependenciesBlock.js	2.86 KB	-rw-rw-r--	2022-08-30 11:49
AsyncDependencyToInitialChunkError.js	913 B	-rw-rw-r--	2022-08-30 11:49
AutomaticPrefetchPlugin.js	1.46 KB	-rw-rw-r--	2022-08-30 11:49
BannerPlugin.js	2.93 KB	-rw-rw-r--	2022-08-30 11:49
Cache.js	3.88 KB	-rw-rw-r--	2022-08-30 11:49
CacheFacade.js	8.38 KB	-rw-rw-r--	2022-08-30 11:49
CaseSensitiveModulesWarning.js	2.06 KB	-rw-rw-r--	2022-08-30 11:49
Chunk.js	21.1 KB	-rw-rw-r--	2022-08-30 11:49
ChunkGraph.js	49.33 KB	-rw-rw-r--	2022-08-30 11:49
ChunkGroup.js	14.77 KB	-rw-rw-r--	2022-08-30 11:49
ChunkRenderError.js	657 B	-rw-rw-r--	2022-08-30 11:49
ChunkTemplate.js	3.9 KB	-rw-rw-r--	2022-08-30 11:49
CleanPlugin.js	11.24 KB	-rw-rw-r--	2022-08-30 11:49
CodeGenerationError.js	619 B	-rw-rw-r--	2022-08-30 11:49
CodeGenerationResults.js	4.36 KB	-rw-rw-r--	2022-08-30 11:49
CommentCompilationWarning.js	729 B	-rw-rw-r--	2022-08-30 11:49
CompatibilityPlugin.js	4.54 KB	-rw-rw-r--	2022-08-30 11:49
Compilation.js	157.69 KB	-rw-rw-r--	2022-08-30 11:49
Compiler.js	35.03 KB	-rw-rw-r--	2022-08-30 11:49
ConcatenationScope.js	4.53 KB	-rw-rw-r--	2022-08-30 11:49
ConcurrentCompilationError.js	441 B	-rw-rw-r--	2022-08-30 11:49
ConditionalInitFragment.js	3.36 KB	-rw-rw-r--	2022-08-30 11:49
ConstPlugin.js	14.42 KB	-rw-rw-r--	2022-08-30 11:49
ContextExclusionPlugin.js	797 B	-rw-rw-r--	2022-08-30 11:49
ContextModule.js	33.63 KB	-rw-rw-r--	2022-08-30 11:49
ContextModuleFactory.js	12.3 KB	-rw-rw-r--	2022-08-30 11:49
ContextReplacementPlugin.js	4.61 KB	-rw-rw-r--	2022-08-30 11:49
DefinePlugin.js	16.28 KB	-rw-rw-r--	2022-08-30 11:49
DelegatedModule.js	7.08 KB	-rw-rw-r--	2022-08-30 11:49
DelegatedModuleFactoryPlugin.js	2.28 KB	-rw-rw-r--	2022-08-30 11:49
DelegatedPlugin.js	1015 B	-rw-rw-r--	2022-08-30 11:49
DependenciesBlock.js	2.53 KB	-rw-rw-r--	2022-08-30 11:49
Dependency.js	9.36 KB	-rw-rw-r--	2022-08-30 11:49
DependencyTemplate.js	2.43 KB	-rw-rw-r--	2022-08-30 11:49
DependencyTemplates.js	1.69 KB	-rw-rw-r--	2022-08-30 11:49
DllEntryPlugin.js	1.25 KB	-rw-rw-r--	2022-08-30 11:49
DllModule.js	4.4 KB	-rw-rw-r--	2022-08-30 11:49
DllModuleFactory.js	1008 B	-rw-rw-r--	2022-08-30 11:49
DllPlugin.js	1.66 KB	-rw-rw-r--	2022-08-30 11:49
DllReferencePlugin.js	5.01 KB	-rw-rw-r--	2022-08-30 11:49
DynamicEntryPlugin.js	1.99 KB	-rw-rw-r--	2022-08-30 11:49
EntryOptionPlugin.js	2.77 KB	-rw-rw-r--	2022-08-30 11:49
EntryPlugin.js	1.7 KB	-rw-rw-r--	2022-08-30 11:49
Entrypoint.js	2.95 KB	-rw-rw-r--	2022-08-30 11:49
EnvironmentPlugin.js	1.7 KB	-rw-rw-r--	2022-08-30 11:49
ErrorHelpers.js	1.42 KB	-rw-rw-r--	2022-08-30 11:49
EvalDevToolModulePlugin.js	3.67 KB	-rw-rw-r--	2022-08-30 11:49
EvalSourceMapDevToolPlugin.js	6.67 KB	-rw-rw-r--	2022-08-30 11:49
ExportsInfo.js	42.96 KB	-rw-rw-r--	2022-08-30 11:49
ExportsInfoApiPlugin.js	2.02 KB	-rw-rw-r--	2022-08-30 11:49
ExternalModule.js	21.94 KB	-rw-rw-r--	2022-08-30 11:49
ExternalModuleFactoryPlugin.js	7.06 KB	-rw-rw-r--	2022-08-30 11:49
ExternalsPlugin.js	899 B	-rw-rw-r--	2022-08-30 11:49
FileSystemInfo.js	102.03 KB	-rw-rw-r--	2022-08-30 11:49
FlagAllModulesAsUsedPlugin.js	1.42 KB	-rw-rw-r--	2022-08-30 11:49
FlagDependencyExportsPlugin.js	12.91 KB	-rw-rw-r--	2022-08-30 11:49
FlagDependencyUsagePlugin.js	10.74 KB	-rw-rw-r--	2022-08-30 11:49
FlagEntryExportAsUsedPlugin.js	1.34 KB	-rw-rw-r--	2022-08-30 11:49
Generator.js	4.73 KB	-rw-rw-r--	2022-08-30 11:49
GraphHelpers.js	1.05 KB	-rw-rw-r--	2022-08-30 11:49
HarmonyLinkingError.js	357 B	-rw-rw-r--	2022-08-30 11:49
HookWebpackError.js	2.03 KB	-rw-rw-r--	2022-08-30 11:49
HotModuleReplacementPlugin.js	25.72 KB	-rw-rw-r--	2022-08-30 11:49
HotUpdateChunk.js	353 B	-rw-rw-r--	2022-08-30 11:49
IgnoreErrorModuleFactory.js	1.02 KB	-rw-rw-r--	2022-08-30 11:49
IgnorePlugin.js	2.2 KB	-rw-rw-r--	2022-08-30 11:49
IgnoreWarningsPlugin.js	964 B	-rw-rw-r--	2022-08-30 11:49
InitFragment.js	4.54 KB	-rw-rw-r--	2022-08-30 11:49
InvalidDependenciesModuleWarning.js	1.83 KB	-rw-rw-r--	2022-08-30 11:49
JavascriptMetaInfoPlugin.js	2.03 KB	-rw-rw-r--	2022-08-30 11:49
LibManifestPlugin.js	3.04 KB	-rw-rw-r--	2022-08-30 11:49
LibraryTemplatePlugin.js	1.55 KB	-rw-rw-r--	2022-08-30 11:49
LoaderOptionsPlugin.js	1.81 KB	-rw-rw-r--	2022-08-30 11:49
LoaderTargetPlugin.js	747 B	-rw-rw-r--	2022-08-30 11:49
MainTemplate.js	10.15 KB	-rw-rw-r--	2022-08-30 11:49
Module.js	29.96 KB	-rw-rw-r--	2022-08-30 11:49
ModuleBuildError.js	1.59 KB	-rw-rw-r--	2022-08-30 11:49
ModuleDependencyError.js	1.08 KB	-rw-rw-r--	2022-08-30 11:49
ModuleDependencyWarning.js	1.19 KB	-rw-rw-r--	2022-08-30 11:49
ModuleError.js	1.17 KB	-rw-rw-r--	2022-08-30 11:49
ModuleFactory.js	1.39 KB	-rw-rw-r--	2022-08-30 11:49
ModuleFilenameHelpers.js	7.98 KB	-rw-rw-r--	2022-08-30 11:49
ModuleGraph.js	23.99 KB	-rw-rw-r--	2022-08-30 11:49
ModuleGraphConnection.js	5.09 KB	-rw-rw-r--	2022-08-30 11:49
ModuleHashingError.js	615 B	-rw-rw-r--	2022-08-30 11:49
ModuleInfoHeaderPlugin.js	7.01 KB	-rw-rw-r--	2022-08-30 11:49
ModuleNotFoundError.js	2.55 KB	-rw-rw-r--	2022-08-30 11:49
ModuleParseError.js	3.25 KB	-rw-rw-r--	2022-08-30 11:49
ModuleProfile.js	2.38 KB	-rw-rw-r--	2022-08-30 11:49
ModuleRestoreError.js	957 B	-rw-rw-r--	2022-08-30 11:49
ModuleStoreError.js	951 B	-rw-rw-r--	2022-08-30 11:49
ModuleTemplate.js	3.91 KB	-rw-rw-r--	2022-08-30 11:49
ModuleWarning.js	1.25 KB	-rw-rw-r--	2022-08-30 11:49
MultiCompiler.js	15.67 KB	-rw-rw-r--	2022-08-30 11:49
MultiStats.js	4.12 KB	-rw-rw-r--	2022-08-30 11:49
MultiWatching.js	1.44 KB	-rw-rw-r--	2022-08-30 11:49
NoEmitOnErrorsPlugin.js	713 B	-rw-rw-r--	2022-08-30 11:49
NoModeWarning.js	663 B	-rw-rw-r--	2022-08-30 11:49
NodeStuffInWebError.js	843 B	-rw-rw-r--	2022-08-30 11:49
NodeStuffPlugin.js	5.27 KB	-rw-rw-r--	2022-08-30 11:49
NormalModule.js	41.09 KB	-rw-rw-r--	2022-08-30 11:49
NormalModuleFactory.js	31.6 KB	-rw-rw-r--	2022-08-30 11:49
NormalModuleReplacementPlugin.js	1.84 KB	-rw-rw-r--	2022-08-30 11:49
NullFactory.js	628 B	-rw-rw-r--	2022-08-30 11:49
OptimizationStages.js	204 B	-rw-rw-r--	2022-08-30 11:49
OptionsApply.js	201 B	-rw-rw-r--	2022-08-30 11:49
Parser.js	968 B	-rw-rw-r--	2022-08-30 11:49
PrefetchPlugin.js	1.02 KB	-rw-rw-r--	2022-08-30 11:49
ProgressPlugin.js	16.78 KB	-rw-rw-r--	2022-08-30 11:49
ProvidePlugin.js	2.82 KB	-rw-rw-r--	2022-08-30 11:49
RawModule.js	4.53 KB	-rw-rw-r--	2022-08-30 11:49
RecordIdsPlugin.js	6.66 KB	-rw-rw-r--	2022-08-30 11:49
RequestShortener.js	755 B	-rw-rw-r--	2022-08-30 11:49
RequireJsStuffPlugin.js	1.86 KB	-rw-rw-r--	2022-08-30 11:49
ResolverFactory.js	4.83 KB	-rw-rw-r--	2022-08-30 11:49
RuntimeGlobals.js	9.01 KB	-rw-rw-r--	2022-08-30 11:49
RuntimeModule.js	5.63 KB	-rw-rw-r--	2022-08-30 11:49
RuntimePlugin.js	14.68 KB	-rw-rw-r--	2022-08-30 11:49
RuntimeTemplate.js	31.11 KB	-rw-rw-r--	2022-08-30 11:49
SelfModuleFactory.js	384 B	-rw-rw-r--	2022-08-30 11:49
SingleEntryPlugin.js	161 B	-rw-rw-r--	2022-08-30 11:49
SizeFormatHelpers.js	583 B	-rw-rw-r--	2022-08-30 11:49
SourceMapDevToolModuleOptionsPlugin.js	1.29 KB	-rw-rw-r--	2022-08-30 11:49
SourceMapDevToolPlugin.js	16.61 KB	-rw-rw-r--	2022-08-30 11:49
Stats.js	1.96 KB	-rw-rw-r--	2022-08-30 11:49
Template.js	12.52 KB	-rw-rw-r--	2022-08-30 11:49
TemplatedPathPlugin.js	8.58 KB	-rw-rw-r--	2022-08-30 11:49
UnhandledSchemeError.js	833 B	-rw-rw-r--	2022-08-30 11:49
UnsupportedFeatureWarning.js	780 B	-rw-rw-r--	2022-08-30 11:49
UseStrictPlugin.js	1.61 KB	-rw-rw-r--	2022-08-30 11:49
WarnCaseSensitiveModulesPlugin.js	1.38 KB	-rw-rw-r--	2022-08-30 11:49
WarnDeprecatedOptionPlugin.js	1.25 KB	-rw-rw-r--	2022-08-30 11:49
WarnNoModeSetPlugin.js	545 B	-rw-rw-r--	2022-08-30 11:49
WatchIgnorePlugin.js	3.27 KB	-rw-rw-r--	2022-08-30 11:49
Watching.js	12.62 KB	-rw-rw-r--	2022-08-30 11:49
WebpackError.js	1.34 KB	-rw-rw-r--	2022-08-30 11:49
WebpackIsIncludedPlugin.js	2.36 KB	-rw-rw-r--	2022-08-30 11:49
WebpackOptionsApply.js	25.69 KB	-rw-rw-r--	2022-08-30 11:49
WebpackOptionsDefaulter.js	470 B	-rw-rw-r--	2022-08-30 11:49
buildChunkGraph.js	44.55 KB	-rw-rw-r--	2022-08-30 11:49
cli.js	16.2 KB	-rw-rw-r--	2022-08-30 11:49
formatLocation.js	1.74 KB	-rw-rw-r--	2022-08-30 11:49
index.js	16.21 KB	-rw-rw-r--	2022-08-30 11:49
validateSchema.js	6.25 KB	-rw-rw-r--	2022-08-30 11:49
webpack.js	5.27 KB	-rw-rw-r--	2022-08-30 11:49

Rename

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Sergey Melyukov @smelukov
*/

"use strict";

const asyncLib = require("neo-async");
const { SyncBailHook } = require("tapable");
const Compilation = require("../lib/Compilation");
const createSchemaValidation = require("./util/create-schema-validation");
const { join } = require("./util/fs");
const processAsyncTree = require("./util/processAsyncTree");

/** @typedef {import("../declarations/WebpackOptions").CleanOptions} CleanOptions */
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./logging/Logger").Logger} Logger */
/** @typedef {import("./util/fs").OutputFileSystem} OutputFileSystem */
/** @typedef {import("./util/fs").StatsCallback} StatsCallback */

/** @typedef {(function(string):boolean)|RegExp} IgnoreItem */
/** @typedef {Map<string, number>} Assets */
/** @typedef {function(IgnoreItem): void} AddToIgnoreCallback */

/**
 * @typedef {Object} CleanPluginCompilationHooks
 * @property {SyncBailHook<[string], boolean>} keep when returning true the file/directory will be kept during cleaning, returning false will clean it and ignore the following plugins and config
 */

/**
 * marge assets map 2 into map 1
 * @param {Assets} as1 assets
 * @param {Assets} as2 assets
 * @returns {void}
 */
const mergeAssets = (as1, as2) => {
	for (const [key, value1] of as2) {
		const value2 = as1.get(key);
		if (!value2 || value1 > value2) as1.set(key, value1);
	}
};

/**
 * @param {OutputFileSystem} fs filesystem
 * @param {string} outputPath output path
 * @param {Map<string, number>} currentAssets filename of the current assets (must not start with .. or ., must only use / as path separator)
 * @param {function((Error | null)=, Set<string>=): void} callback returns the filenames of the assets that shouldn't be there
 * @returns {void}
 */
const getDiffToFs = (fs, outputPath, currentAssets, callback) => {
	const directories = new Set();
	// get directories of assets
	for (const [asset] of currentAssets) {
		directories.add(asset.replace(/(^|\/)[^/]*$/, ""));
	}
	// and all parent directories
	for (const directory of directories) {
		directories.add(directory.replace(/(^|\/)[^/]*$/, ""));
	}
	const diff = new Set();
	asyncLib.forEachLimit(
		directories,
		10,
		(directory, callback) => {
			fs.readdir(join(fs, outputPath, directory), (err, entries) => {
				if (err) {
					if (err.code === "ENOENT") return callback();
					if (err.code === "ENOTDIR") {
						diff.add(directory);
						return callback();
					}
					return callback(err);
				}
				for (const entry of entries) {
					const file = /** @type {string} */ (entry);
					const filename = directory ? `${directory}/${file}` : file;
					if (!directories.has(filename) && !currentAssets.has(filename)) {
						diff.add(filename);
					}
				}
				callback();
			});
		},
		err => {
			if (err) return callback(err);

callback(null, diff);
		}
	);
};

/**
 * @param {Assets} currentAssets assets list
 * @param {Assets} oldAssets old assets list
 * @returns {Set<string>} diff
 */
const getDiffToOldAssets = (currentAssets, oldAssets) => {
	const diff = new Set();
	const now = Date.now();
	for (const [asset, ts] of oldAssets) {
		if (ts >= now) continue;
		if (!currentAssets.has(asset)) diff.add(asset);
	}
	return diff;
};

/**
 * @param {OutputFileSystem} fs filesystem
 * @param {string} filename path to file
 * @param {StatsCallback} callback callback for provided filename
 * @returns {void}
 */
const doStat = (fs, filename, callback) => {
	if ("lstat" in fs) {
		fs.lstat(filename, callback);
	} else {
		fs.stat(filename, callback);
	}
};

/**
 * @param {OutputFileSystem} fs filesystem
 * @param {string} outputPath output path
 * @param {boolean} dry only log instead of fs modification
 * @param {Logger} logger logger
 * @param {Set<string>} diff filenames of the assets that shouldn't be there
 * @param {function(string): boolean} isKept check if the entry is ignored
 * @param {function(Error=, Assets=): void} callback callback
 * @returns {void}
 */
const applyDiff = (fs, outputPath, dry, logger, diff, isKept, callback) => {
	const log = msg => {
		if (dry) {
			logger.info(msg);
		} else {
			logger.log(msg);
		}
	};
	/** @typedef {{ type: "check" | "unlink" | "rmdir", filename: string, parent: { remaining: number, job: Job } | undefined }} Job */
	/** @type {Job[]} */
	const jobs = Array.from(diff.keys(), filename => ({
		type: "check",
		filename,
		parent: undefined
	}));
	/** @type {Assets} */
	const keptAssets = new Map();
	processAsyncTree(
		jobs,
		10,
		({ type, filename, parent }, push, callback) => {
			const handleError = err => {
				if (err.code === "ENOENT") {
					log(`${filename} was removed during cleaning by something else`);
					handleParent();
					return callback();
				}
				return callback(err);
			};
			const handleParent = () => {
				if (parent && --parent.remaining === 0) push(parent.job);
			};
			const path = join(fs, outputPath, filename);
			switch (type) {
				case "check":
					if (isKept(filename)) {
						keptAssets.set(filename, 0);
						// do not decrement parent entry as we don't want to delete the parent
						log(`${filename} will be kept`);
						return process.nextTick(callback);
					}
					doStat(fs, path, (err, stats) => {
						if (err) return handleError(err);
						if (!stats.isDirectory()) {
							push({
								type: "unlink",
								filename,
								parent
							});
							return callback();
						}
						fs.readdir(path, (err, entries) => {
							if (err) return handleError(err);
							/** @type {Job} */
							const deleteJob = {
								type: "rmdir",
								filename,
								parent
							};
							if (entries.length === 0) {
								push(deleteJob);
							} else {
								const parentToken = {
									remaining: entries.length,
									job: deleteJob
								};
								for (const entry of entries) {
									const file = /** @type {string} */ (entry);
									if (file.startsWith(".")) {
										log(
											`${filename} will be kept (dot-files will never be removed)`
										);
										continue;
									}
									push({
										type: "check",
										filename: `${filename}/${file}`,
										parent: parentToken
									});
								}
							}
							return callback();
						});
					});
					break;
				case "rmdir":
					log(`${filename} will be removed`);
					if (dry) {
						handleParent();
						return process.nextTick(callback);
					}
					if (!fs.rmdir) {
						logger.warn(
							`${filename} can't be removed because output file system doesn't support removing directories (rmdir)`
						);
						return process.nextTick(callback);
					}
					fs.rmdir(path, err => {
						if (err) return handleError(err);
						handleParent();
						callback();
					});
					break;
				case "unlink":
					log(`${filename} will be removed`);
					if (dry) {
						handleParent();
						return process.nextTick(callback);
					}
					if (!fs.unlink) {
						logger.warn(
							`${filename} can't be removed because output file system doesn't support removing files (rmdir)`
						);
						return process.nextTick(callback);
					}
					fs.unlink(path, err => {
						if (err) return handleError(err);
						handleParent();
						callback();
					});
					break;
			}
		},
		err => {
			if (err) return callback(err);
			callback(undefined, keptAssets);
		}
	);
};

/** @type {WeakMap<Compilation, CleanPluginCompilationHooks>} */
const compilationHooksMap = new WeakMap();

class CleanPlugin {
	/**
	 * @param {Compilation} compilation the compilation
	 * @returns {CleanPluginCompilationHooks} the attached hooks
	 */
	static getCompilationHooks(compilation) {
		if (!(compilation instanceof Compilation)) {
			throw new TypeError(
				"The 'compilation' argument must be an instance of Compilation"
			);
		}
		let hooks = compilationHooksMap.get(compilation);
		if (hooks === undefined) {
			hooks = {
				/** @type {SyncBailHook<[string], boolean>} */
				keep: new SyncBailHook(["ignore"])
			};
			compilationHooksMap.set(compilation, hooks);
		}
		return hooks;
	}

/** @param {CleanOptions} options options */
	constructor(options = {}) {
		validate(options);
		this.options = { dry: false, ...options };
	}

/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		const { dry, keep } = this.options;

const keepFn =
			typeof keep === "function"
				? keep
				: typeof keep === "string"
				? path => path.startsWith(keep)
				: typeof keep === "object" && keep.test
				? path => keep.test(path)
				: () => false;

// We assume that no external modification happens while the compiler is active
		// So we can store the old assets and only diff to them to avoid fs access on
		// incremental builds
		/** @type {undefined|Assets} */
		let oldAssets;

compiler.hooks.emit.tapAsync(
			{
				name: "CleanPlugin",
				stage: 100
			},
			(compilation, callback) => {
				const hooks = CleanPlugin.getCompilationHooks(compilation);
				const logger = compilation.getLogger("webpack.CleanPlugin");
				const fs = compiler.outputFileSystem;

if (!fs.readdir) {
					return callback(
						new Error(
							"CleanPlugin: Output filesystem doesn't support listing directories (readdir)"
						)
					);
				}

/** @type {Assets} */
				const currentAssets = new Map();
				const now = Date.now();
				for (const asset of Object.keys(compilation.assets)) {
					if (/^[A-Za-z]:\\|^\/|^\\\\/.test(asset)) continue;
					let normalizedAsset;
					let newNormalizedAsset = asset.replace(/\\/g, "/");
					do {
						normalizedAsset = newNormalizedAsset;
						newNormalizedAsset = normalizedAsset.replace(
							/(^|\/)(?!\.\.)[^/]+\/\.\.\//g,
							"$1"
						);
					} while (newNormalizedAsset !== normalizedAsset);
					if (normalizedAsset.startsWith("../")) continue;
					const assetInfo = compilation.assetsInfo.get(asset);
					if (assetInfo && assetInfo.hotModuleReplacement) {
						currentAssets.set(normalizedAsset, now + _10sec);
					} else {
						currentAssets.set(normalizedAsset, 0);
					}
				}

const outputPath = compilation.getPath(compiler.outputPath, {});

const isKept = path => {
					const result = hooks.keep.call(path);
					if (result !== undefined) return result;
					return keepFn(path);
				};

/**
				 * @param {Error=} err err
				 * @param {Set<string>=} diff diff
				 */
				const diffCallback = (err, diff) => {
					if (err) {
						oldAssets = undefined;
						callback(err);
						return;
					}
					applyDiff(
						fs,
						outputPath,
						dry,
						logger,
						diff,
						isKept,
						(err, keptAssets) => {
							if (err) {
								oldAssets = undefined;
							} else {
								if (oldAssets) mergeAssets(currentAssets, oldAssets);
								oldAssets = currentAssets;
								if (keptAssets) mergeAssets(oldAssets, keptAssets);
							}
							callback(err);
						}
					);
				};

if (oldAssets) {
					diffCallback(null, getDiffToOldAssets(currentAssets, oldAssets));
				} else {
					getDiffToFs(fs, outputPath, currentAssets, diffCallback);
				}
			}
		);
	}
}

module.exports = CleanPlugin;