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node_modules/webpack/lib/ModuleFilenameHelpers.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const NormalModule = require("./NormalModule");
+const { DEFAULTS } = require("./config/defaults");
+const createHash = require("./util/createHash");
+const memoize = require("./util/memoize");
+
+/** @typedef {import("../declarations/WebpackOptions").HashFunction} HashFunction */
+/** @typedef {import("./ChunkGraph")} ChunkGraph */
+/** @typedef {import("./Module")} Module */
+/** @typedef {import("./RequestShortener")} RequestShortener */
+
+/** @typedef {(str: string) => boolean} MatcherFn */
+/** @typedef {string | RegExp | MatcherFn | (string | RegExp | MatcherFn)[]} Matcher */
+/** @typedef {{ test?: Matcher, include?: Matcher, exclude?: Matcher }} MatchObject */
+
+const ModuleFilenameHelpers = module.exports;
+
+// TODO webpack 6: consider removing these
+ModuleFilenameHelpers.ALL_LOADERS_RESOURCE = "[all-loaders][resource]";
+ModuleFilenameHelpers.REGEXP_ALL_LOADERS_RESOURCE =
+	/\[all-?loaders\]\[resource\]/gi;
+ModuleFilenameHelpers.LOADERS_RESOURCE = "[loaders][resource]";
+ModuleFilenameHelpers.REGEXP_LOADERS_RESOURCE = /\[loaders\]\[resource\]/gi;
+ModuleFilenameHelpers.RESOURCE = "[resource]";
+ModuleFilenameHelpers.REGEXP_RESOURCE = /\[resource\]/gi;
+ModuleFilenameHelpers.ABSOLUTE_RESOURCE_PATH = "[absolute-resource-path]";
+// cSpell:words olute
+ModuleFilenameHelpers.REGEXP_ABSOLUTE_RESOURCE_PATH =
+	/\[abs(olute)?-?resource-?path\]/gi;
+ModuleFilenameHelpers.RESOURCE_PATH = "[resource-path]";
+ModuleFilenameHelpers.REGEXP_RESOURCE_PATH = /\[resource-?path\]/gi;
+ModuleFilenameHelpers.ALL_LOADERS = "[all-loaders]";
+ModuleFilenameHelpers.REGEXP_ALL_LOADERS = /\[all-?loaders\]/gi;
+ModuleFilenameHelpers.LOADERS = "[loaders]";
+ModuleFilenameHelpers.REGEXP_LOADERS = /\[loaders\]/gi;
+ModuleFilenameHelpers.QUERY = "[query]";
+ModuleFilenameHelpers.REGEXP_QUERY = /\[query\]/gi;
+ModuleFilenameHelpers.ID = "[id]";
+ModuleFilenameHelpers.REGEXP_ID = /\[id\]/gi;
+ModuleFilenameHelpers.HASH = "[hash]";
+ModuleFilenameHelpers.REGEXP_HASH = /\[hash\]/gi;
+ModuleFilenameHelpers.NAMESPACE = "[namespace]";
+ModuleFilenameHelpers.REGEXP_NAMESPACE = /\[namespace\]/gi;
+
+/** @typedef {() => string} ReturnStringCallback */
+
+/**
+ * Returns a function that returns the part of the string after the token
+ * @param {ReturnStringCallback} strFn the function to get the string
+ * @param {string} token the token to search for
+ * @returns {ReturnStringCallback} a function that returns the part of the string after the token
+ */
+const getAfter = (strFn, token) => () => {
+	const str = strFn();
+	const idx = str.indexOf(token);
+	return idx < 0 ? "" : str.slice(idx);
+};
+
+/**
+ * Returns a function that returns the part of the string before the token
+ * @param {ReturnStringCallback} strFn the function to get the string
+ * @param {string} token the token to search for
+ * @returns {ReturnStringCallback} a function that returns the part of the string before the token
+ */
+const getBefore = (strFn, token) => () => {
+	const str = strFn();
+	const idx = str.lastIndexOf(token);
+	return idx < 0 ? "" : str.slice(0, idx);
+};
+
+/**
+ * Returns a function that returns a hash of the string
+ * @param {ReturnStringCallback} strFn the function to get the string
+ * @param {HashFunction=} hashFunction the hash function to use
+ * @returns {ReturnStringCallback} a function that returns the hash of the string
+ */
+const getHash =
+	(strFn, hashFunction = DEFAULTS.HASH_FUNCTION) =>
+	() => {
+		const hash = createHash(hashFunction);
+		hash.update(strFn());
+		const digest = hash.digest("hex");
+		return digest.slice(0, 4);
+	};
+
+/**
+ * @template T
+ * Returns a lazy object. The object is lazy in the sense that the properties are
+ * only evaluated when they are accessed. This is only obtained by setting a function as the value for each key.
+ * @param {Record<string, () => T>} obj the object to convert to a lazy access object
+ * @returns {Record<string, T>} the lazy access object
+ */
+const lazyObject = (obj) => {
+	const newObj = /** @type {Record<string, T>} */ ({});
+	for (const key of Object.keys(obj)) {
+		const fn = obj[key];
+		Object.defineProperty(newObj, key, {
+			get: () => fn(),
+			set: (v) => {
+				Object.defineProperty(newObj, key, {
+					value: v,
+					enumerable: true,
+					writable: true
+				});
+			},
+			enumerable: true,
+			configurable: true
+		});
+	}
+	return newObj;
+};
+
+const SQUARE_BRACKET_TAG_REGEXP = /\[\\*([\w-]+)\\*\]/g;
+/**
+ * @typedef {object} ModuleFilenameTemplateContext
+ * @property {string} identifier the identifier of the module
+ * @property {string} shortIdentifier the shortened identifier of the module
+ * @property {string} resource the resource of the module request
+ * @property {string} resourcePath the resource path of the module request
+ * @property {string} absoluteResourcePath the absolute resource path of the module request
+ * @property {string} loaders the loaders of the module request
+ * @property {string} allLoaders the all loaders of the module request
+ * @property {string} query the query of the module identifier
+ * @property {string} moduleId the module id of the module
+ * @property {string} hash the hash of the module identifier
+ * @property {string} namespace the module namespace
+ */
+/** @typedef {((context: ModuleFilenameTemplateContext) => string)} ModuleFilenameTemplateFunction */
+/** @typedef {string | ModuleFilenameTemplateFunction} ModuleFilenameTemplate */
+
+/**
+ * @param {Module | string} module the module
+ * @param {{ namespace?: string, moduleFilenameTemplate?: ModuleFilenameTemplate }} options options
+ * @param {{ requestShortener: RequestShortener, chunkGraph: ChunkGraph, hashFunction?: HashFunction }} contextInfo context info
+ * @returns {string} the filename
+ */
+ModuleFilenameHelpers.createFilename = (
+	// eslint-disable-next-line default-param-last
+	module = "",
+	options,
+	{ requestShortener, chunkGraph, hashFunction = DEFAULTS.HASH_FUNCTION }
+) => {
+	const opts = {
+		namespace: "",
+		moduleFilenameTemplate: "",
+		...(typeof options === "object"
+			? options
+			: {
+					moduleFilenameTemplate: options
+				})
+	};
+
+	/** @type {ReturnStringCallback} */
+	let absoluteResourcePath;
+	/** @type {ReturnStringCallback} */
+	let hash;
+	/** @type {ReturnStringCallback} */
+	let identifier;
+	/** @type {ReturnStringCallback} */
+	let moduleId;
+	/** @type {ReturnStringCallback} */
+	let shortIdentifier;
+	if (typeof module === "string") {
+		shortIdentifier =
+			/** @type {ReturnStringCallback} */
+			(memoize(() => requestShortener.shorten(module)));
+		identifier = shortIdentifier;
+		moduleId = () => "";
+		absoluteResourcePath = () =>
+			/** @type {string} */ (module.split("!").pop());
+		hash = getHash(identifier, hashFunction);
+	} else {
+		shortIdentifier = memoize(() =>
+			module.readableIdentifier(requestShortener)
+		);
+		identifier =
+			/** @type {ReturnStringCallback} */
+			(memoize(() => requestShortener.shorten(module.identifier())));
+		moduleId =
+			/** @type {ReturnStringCallback} */
+			(() => chunkGraph.getModuleId(module));
+		absoluteResourcePath = () =>
+			module instanceof NormalModule
+				? module.resource
+				: /** @type {string} */ (module.identifier().split("!").pop());
+		hash = getHash(identifier, hashFunction);
+	}
+	const resource =
+		/** @type {ReturnStringCallback} */
+		(memoize(() => shortIdentifier().split("!").pop()));
+
+	const loaders = getBefore(shortIdentifier, "!");
+	const allLoaders = getBefore(identifier, "!");
+	const query = getAfter(resource, "?");
+	const resourcePath = () => {
+		const q = query().length;
+		return q === 0 ? resource() : resource().slice(0, -q);
+	};
+	if (typeof opts.moduleFilenameTemplate === "function") {
+		return opts.moduleFilenameTemplate(
+			/** @type {ModuleFilenameTemplateContext} */
+			(
+				lazyObject({
+					identifier,
+					shortIdentifier,
+					resource,
+					resourcePath: memoize(resourcePath),
+					absoluteResourcePath: memoize(absoluteResourcePath),
+					loaders: memoize(loaders),
+					allLoaders: memoize(allLoaders),
+					query: memoize(query),
+					moduleId: memoize(moduleId),
+					hash: memoize(hash),
+					namespace: () => opts.namespace
+				})
+			)
+		);
+	}
+
+	// TODO webpack 6: consider removing alternatives without dashes
+	/** @type {Map<string, () => string>} */
+	const replacements = new Map([
+		["identifier", identifier],
+		["short-identifier", shortIdentifier],
+		["resource", resource],
+		["resource-path", resourcePath],
+		// cSpell:words resourcepath
+		["resourcepath", resourcePath],
+		["absolute-resource-path", absoluteResourcePath],
+		["abs-resource-path", absoluteResourcePath],
+		// cSpell:words absoluteresource
+		["absoluteresource-path", absoluteResourcePath],
+		// cSpell:words absresource
+		["absresource-path", absoluteResourcePath],
+		// cSpell:words resourcepath
+		["absolute-resourcepath", absoluteResourcePath],
+		// cSpell:words resourcepath
+		["abs-resourcepath", absoluteResourcePath],
+		// cSpell:words absoluteresourcepath
+		["absoluteresourcepath", absoluteResourcePath],
+		// cSpell:words absresourcepath
+		["absresourcepath", absoluteResourcePath],
+		["all-loaders", allLoaders],
+		// cSpell:words allloaders
+		["allloaders", allLoaders],
+		["loaders", loaders],
+		["query", query],
+		["id", moduleId],
+		["hash", hash],
+		["namespace", () => opts.namespace]
+	]);
+
+	// TODO webpack 6: consider removing weird double placeholders
+	return /** @type {string} */ (opts.moduleFilenameTemplate)
+		.replace(ModuleFilenameHelpers.REGEXP_ALL_LOADERS_RESOURCE, "[identifier]")
+		.replace(
+			ModuleFilenameHelpers.REGEXP_LOADERS_RESOURCE,
+			"[short-identifier]"
+		)
+		.replace(SQUARE_BRACKET_TAG_REGEXP, (match, content) => {
+			if (content.length + 2 === match.length) {
+				const replacement = replacements.get(content.toLowerCase());
+				if (replacement !== undefined) {
+					return replacement();
+				}
+			} else if (match.startsWith("[\\") && match.endsWith("\\]")) {
+				return `[${match.slice(2, -2)}]`;
+			}
+			return match;
+		});
+};
+
+/**
+ * Replaces duplicate items in an array with new values generated by a callback function.
+ * The callback function is called with the duplicate item, the index of the duplicate item, and the number of times the item has been replaced.
+ * The callback function should return the new value for the duplicate item.
+ * @template T
+ * @param {T[]} array the array with duplicates to be replaced
+ * @param {(duplicateItem: T, duplicateItemIndex: number, numberOfTimesReplaced: number) => T} fn callback function to generate new values for the duplicate items
+ * @param {(firstElement: T, nextElement: T) => -1 | 0 | 1=} comparator optional comparator function to sort the duplicate items
+ * @returns {T[]} the array with duplicates replaced
+ * @example
+ * ```js
+ * const array = ["a", "b", "c", "a", "b", "a"];
+ * const result = ModuleFilenameHelpers.replaceDuplicates(array, (item, index, count) => `${item}-${count}`);
+ * // result: ["a-1", "b-1", "c", "a-2", "b-2", "a-3"]
+ * ```
+ */
+ModuleFilenameHelpers.replaceDuplicates = (array, fn, comparator) => {
+	const countMap = Object.create(null);
+	const posMap = Object.create(null);
+
+	for (const [idx, item] of array.entries()) {
+		countMap[item] = countMap[item] || [];
+		countMap[item].push(idx);
+		posMap[item] = 0;
+	}
+	if (comparator) {
+		for (const item of Object.keys(countMap)) {
+			countMap[item].sort(comparator);
+		}
+	}
+	return array.map((item, i) => {
+		if (countMap[item].length > 1) {
+			if (comparator && countMap[item][0] === i) return item;
+			return fn(item, i, posMap[item]++);
+		}
+		return item;
+	});
+};
+
+/**
+ * Tests if a string matches a RegExp or an array of RegExp.
+ * @param {string} str string to test
+ * @param {Matcher} test value which will be used to match against the string
+ * @returns {boolean} true, when the RegExp matches
+ * @example
+ * ```js
+ * ModuleFilenameHelpers.matchPart("foo.js", "foo"); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", "foo.js"); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", "foo."); // false
+ * ModuleFilenameHelpers.matchPart("foo.js", "foo*"); // false
+ * ModuleFilenameHelpers.matchPart("foo.js", "foo.*"); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", /^foo/); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", [/^foo/, "bar"]); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", [/^foo/, "bar"]); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", [/^foo/, /^bar/]); // true
+ * ModuleFilenameHelpers.matchPart("foo.js", [/^baz/, /^bar/]); // false
+ * ```
+ */
+const matchPart = (str, test) => {
+	if (!test) return true;
+	if (test instanceof RegExp) {
+		return test.test(str);
+	} else if (typeof test === "string") {
+		return str.startsWith(test);
+	} else if (typeof test === "function") {
+		return test(str);
+	}
+
+	return test.some((test) => matchPart(str, test));
+};
+
+ModuleFilenameHelpers.matchPart = matchPart;
+
+/**
+ * Tests if a string matches a match object. The match object can have the following properties:
+ * - `test`: a RegExp or an array of RegExp
+ * - `include`: a RegExp or an array of RegExp
+ * - `exclude`: a RegExp or an array of RegExp
+ *
+ * The `test` property is tested first, then `include` and then `exclude`.
+ * @param {MatchObject} obj a match object to test against the string
+ * @param {string} str string to test against the matching object
+ * @returns {boolean} true, when the object matches
+ * @example
+ * ```js
+ * ModuleFilenameHelpers.matchObject({ test: "foo.js" }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ test: /^foo/ }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ test: [/^foo/, "bar"] }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ test: [/^foo/, "bar"] }, "baz.js"); // false
+ * ModuleFilenameHelpers.matchObject({ include: "foo.js" }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ include: "foo.js" }, "bar.js"); // false
+ * ModuleFilenameHelpers.matchObject({ include: /^foo/ }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ include: [/^foo/, "bar"] }, "foo.js"); // true
+ * ModuleFilenameHelpers.matchObject({ include: [/^foo/, "bar"] }, "baz.js"); // false
+ * ModuleFilenameHelpers.matchObject({ exclude: "foo.js" }, "foo.js"); // false
+ * ModuleFilenameHelpers.matchObject({ exclude: [/^foo/, "bar"] }, "foo.js"); // false
+ * ```
+ */
+ModuleFilenameHelpers.matchObject = (obj, str) => {
+	if (obj.test && !ModuleFilenameHelpers.matchPart(str, obj.test)) {
+		return false;
+	}
+	if (obj.include && !ModuleFilenameHelpers.matchPart(str, obj.include)) {
+		return false;
+	}
+	if (obj.exclude && ModuleFilenameHelpers.matchPart(str, obj.exclude)) {
+		return false;
+	}
+	return true;
+};