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app_vue/node_modules/webpack/lib/util/comparators.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { compareRuntime } = require("./runtime");
+
+/** @typedef {import("../Chunk")} Chunk */
+/** @typedef {import("../Chunk").ChunkId} ChunkId */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../ChunkGraph").ModuleId} ModuleId */
+/** @typedef {import("../ChunkGroup")} ChunkGroup */
+/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("../Module")} Module */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+
+/**
+ * @template T
+ * @typedef {(a: T, b: T) => -1 | 0 | 1} Comparator
+ */
+/**
+ * @template {object} TArg
+ * @template T
+ * @typedef {(tArg: TArg, a: T, b: T) => -1 | 0 | 1} RawParameterizedComparator
+ */
+/**
+ * @template {object} TArg
+ * @template T
+ * @typedef {(tArg: TArg) => Comparator<T>} ParameterizedComparator
+ */
+
+/**
+ * @template {object} TArg
+ * @template {object} T
+ * @param {RawParameterizedComparator<TArg, T>} fn comparator with argument
+ * @returns {ParameterizedComparator<TArg, T>} comparator
+ */
+const createCachedParameterizedComparator = fn => {
+	/** @type {WeakMap<EXPECTED_OBJECT, Comparator<T>>} */
+	const map = new WeakMap();
+	return arg => {
+		const cachedResult = map.get(/** @type {EXPECTED_OBJECT} */ (arg));
+		if (cachedResult !== undefined) return cachedResult;
+		/**
+		 * @param {T} a first item
+		 * @param {T} b second item
+		 * @returns {-1|0|1} compare result
+		 */
+		const result = fn.bind(null, arg);
+		map.set(/** @type {EXPECTED_OBJECT} */ (arg), result);
+		return result;
+	};
+};
+
+/**
+ * @param {Chunk} a chunk
+ * @param {Chunk} b chunk
+ * @returns {-1|0|1} compare result
+ */
+module.exports.compareChunksById = (a, b) =>
+	compareIds(/** @type {ChunkId} */ (a.id), /** @type {ChunkId} */ (b.id));
+
+/**
+ * @param {Module} a module
+ * @param {Module} b module
+ * @returns {-1|0|1} compare result
+ */
+module.exports.compareModulesByIdentifier = (a, b) =>
+	compareIds(a.identifier(), b.identifier());
+
+/**
+ * @param {ChunkGraph} chunkGraph the chunk graph
+ * @param {Module} a module
+ * @param {Module} b module
+ * @returns {-1|0|1} compare result
+ */
+const compareModulesById = (chunkGraph, a, b) =>
+	compareIds(
+		/** @type {ModuleId} */ (chunkGraph.getModuleId(a)),
+		/** @type {ModuleId} */ (chunkGraph.getModuleId(b))
+	);
+/** @type {ParameterizedComparator<ChunkGraph, Module>} */
+module.exports.compareModulesById =
+	createCachedParameterizedComparator(compareModulesById);
+
+/**
+ * @param {number} a number
+ * @param {number} b number
+ * @returns {-1|0|1} compare result
+ */
+const compareNumbers = (a, b) => {
+	if (typeof a !== typeof b) {
+		return typeof a < typeof b ? -1 : 1;
+	}
+	if (a < b) return -1;
+	if (a > b) return 1;
+	return 0;
+};
+module.exports.compareNumbers = compareNumbers;
+
+/**
+ * @param {string} a string
+ * @param {string} b string
+ * @returns {-1|0|1} compare result
+ */
+const compareStringsNumeric = (a, b) => {
+	const aLength = a.length;
+	const bLength = b.length;
+
+	let aChar = 0;
+	let bChar = 0;
+
+	let aIsDigit = false;
+	let bIsDigit = false;
+	let i = 0;
+	let j = 0;
+	while (i < aLength && j < bLength) {
+		aChar = a.charCodeAt(i);
+		bChar = b.charCodeAt(j);
+
+		aIsDigit = aChar >= 48 && aChar <= 57;
+		bIsDigit = bChar >= 48 && bChar <= 57;
+
+		if (!aIsDigit && !bIsDigit) {
+			if (aChar < bChar) return -1;
+			if (aChar > bChar) return 1;
+			i++;
+			j++;
+		} else if (aIsDigit && !bIsDigit) {
+			// This segment of a is shorter than in b
+			return 1;
+		} else if (!aIsDigit && bIsDigit) {
+			// This segment of b is shorter than in a
+			return -1;
+		} else {
+			let aNumber = aChar - 48;
+			let bNumber = bChar - 48;
+
+			while (++i < aLength) {
+				aChar = a.charCodeAt(i);
+				if (aChar < 48 || aChar > 57) break;
+				aNumber = aNumber * 10 + aChar - 48;
+			}
+
+			while (++j < bLength) {
+				bChar = b.charCodeAt(j);
+				if (bChar < 48 || bChar > 57) break;
+				bNumber = bNumber * 10 + bChar - 48;
+			}
+
+			if (aNumber < bNumber) return -1;
+			if (aNumber > bNumber) return 1;
+		}
+	}
+
+	if (j < bLength) {
+		// a is shorter than b
+		bChar = b.charCodeAt(j);
+		bIsDigit = bChar >= 48 && bChar <= 57;
+		return bIsDigit ? -1 : 1;
+	}
+	if (i < aLength) {
+		// b is shorter than a
+		aChar = a.charCodeAt(i);
+		aIsDigit = aChar >= 48 && aChar <= 57;
+		return aIsDigit ? 1 : -1;
+	}
+
+	return 0;
+};
+module.exports.compareStringsNumeric = compareStringsNumeric;
+
+/**
+ * @param {ModuleGraph} moduleGraph the module graph
+ * @param {Module} a module
+ * @param {Module} b module
+ * @returns {-1|0|1} compare result
+ */
+const compareModulesByPostOrderIndexOrIdentifier = (moduleGraph, a, b) => {
+	const cmp = compareNumbers(
+		/** @type {number} */ (moduleGraph.getPostOrderIndex(a)),
+		/** @type {number} */ (moduleGraph.getPostOrderIndex(b))
+	);
+	if (cmp !== 0) return cmp;
+	return compareIds(a.identifier(), b.identifier());
+};
+/** @type {ParameterizedComparator<ModuleGraph, Module>} */
+module.exports.compareModulesByPostOrderIndexOrIdentifier =
+	createCachedParameterizedComparator(
+		compareModulesByPostOrderIndexOrIdentifier
+	);
+
+/**
+ * @param {ModuleGraph} moduleGraph the module graph
+ * @param {Module} a module
+ * @param {Module} b module
+ * @returns {-1|0|1} compare result
+ */
+const compareModulesByPreOrderIndexOrIdentifier = (moduleGraph, a, b) => {
+	const cmp = compareNumbers(
+		/** @type {number} */ (moduleGraph.getPreOrderIndex(a)),
+		/** @type {number} */ (moduleGraph.getPreOrderIndex(b))
+	);
+	if (cmp !== 0) return cmp;
+	return compareIds(a.identifier(), b.identifier());
+};
+/** @type {ParameterizedComparator<ModuleGraph, Module>} */
+module.exports.compareModulesByPreOrderIndexOrIdentifier =
+	createCachedParameterizedComparator(
+		compareModulesByPreOrderIndexOrIdentifier
+	);
+
+/**
+ * @param {ChunkGraph} chunkGraph the chunk graph
+ * @param {Module} a module
+ * @param {Module} b module
+ * @returns {-1|0|1} compare result
+ */
+const compareModulesByIdOrIdentifier = (chunkGraph, a, b) => {
+	const cmp = compareIds(
+		/** @type {ModuleId} */ (chunkGraph.getModuleId(a)),
+		/** @type {ModuleId} */ (chunkGraph.getModuleId(b))
+	);
+	if (cmp !== 0) return cmp;
+	return compareIds(a.identifier(), b.identifier());
+};
+/** @type {ParameterizedComparator<ChunkGraph, Module>} */
+module.exports.compareModulesByIdOrIdentifier =
+	createCachedParameterizedComparator(compareModulesByIdOrIdentifier);
+
+/**
+ * @param {ChunkGraph} chunkGraph the chunk graph
+ * @param {Chunk} a chunk
+ * @param {Chunk} b chunk
+ * @returns {-1 | 0 | 1} compare result
+ */
+const compareChunks = (chunkGraph, a, b) => chunkGraph.compareChunks(a, b);
+/** @type {ParameterizedComparator<ChunkGraph, Chunk>} */
+module.exports.compareChunks =
+	createCachedParameterizedComparator(compareChunks);
+
+/**
+ * @param {string | number} a first id
+ * @param {string | number} b second id
+ * @returns {-1 | 0 | 1} compare result
+ */
+const compareIds = (a, b) => {
+	if (typeof a !== typeof b) {
+		return typeof a < typeof b ? -1 : 1;
+	}
+	if (a < b) return -1;
+	if (a > b) return 1;
+	return 0;
+};
+
+module.exports.compareIds = compareIds;
+
+/**
+ * @param {string} a first string
+ * @param {string} b second string
+ * @returns {-1|0|1} compare result
+ */
+const compareStrings = (a, b) => {
+	if (a < b) return -1;
+	if (a > b) return 1;
+	return 0;
+};
+
+module.exports.compareStrings = compareStrings;
+
+/**
+ * @param {ChunkGroup} a first chunk group
+ * @param {ChunkGroup} b second chunk group
+ * @returns {-1 | 0 | 1} compare result
+ */
+const compareChunkGroupsByIndex = (a, b) =>
+	/** @type {number} */ (a.index) < /** @type {number} */ (b.index) ? -1 : 1;
+module.exports.compareChunkGroupsByIndex = compareChunkGroupsByIndex;
+
+/**
+ * @template {EXPECTED_OBJECT} K1
+ * @template {EXPECTED_OBJECT} K2
+ * @template T
+ */
+class TwoKeyWeakMap {
+	constructor() {
+		/**
+		 * @private
+		 * @type {WeakMap<K1, WeakMap<K2, T | undefined>>}
+		 */
+		this._map = new WeakMap();
+	}
+
+	/**
+	 * @param {K1} key1 first key
+	 * @param {K2} key2 second key
+	 * @returns {T | undefined} value
+	 */
+	get(key1, key2) {
+		const childMap = this._map.get(key1);
+		if (childMap === undefined) {
+			return;
+		}
+		return childMap.get(key2);
+	}
+
+	/**
+	 * @param {K1} key1 first key
+	 * @param {K2} key2 second key
+	 * @param {T | undefined} value new value
+	 * @returns {void}
+	 */
+	set(key1, key2, value) {
+		let childMap = this._map.get(key1);
+		if (childMap === undefined) {
+			childMap = new WeakMap();
+			this._map.set(key1, childMap);
+		}
+		childMap.set(key2, value);
+	}
+}
+
+/** @type {TwoKeyWeakMap<Comparator<EXPECTED_ANY>, Comparator<EXPECTED_ANY>, Comparator<EXPECTED_ANY>>}} */
+const concatComparatorsCache = new TwoKeyWeakMap();
+
+/**
+ * @template T
+ * @param {Comparator<T>} c1 comparator
+ * @param {Comparator<T>} c2 comparator
+ * @param {Comparator<T>[]} cRest comparators
+ * @returns {Comparator<T>} comparator
+ */
+const concatComparators = (c1, c2, ...cRest) => {
+	if (cRest.length > 0) {
+		const [c3, ...cRest2] = cRest;
+		return concatComparators(c1, concatComparators(c2, c3, ...cRest2));
+	}
+	const cacheEntry = /** @type {Comparator<T>} */ (
+		concatComparatorsCache.get(c1, c2)
+	);
+	if (cacheEntry !== undefined) return cacheEntry;
+	/**
+	 * @param {T} a first value
+	 * @param {T} b second value
+	 * @returns {-1|0|1} compare result
+	 */
+	const result = (a, b) => {
+		const res = c1(a, b);
+		if (res !== 0) return res;
+		return c2(a, b);
+	};
+	concatComparatorsCache.set(c1, c2, result);
+	return result;
+};
+module.exports.concatComparators = concatComparators;
+
+/**
+ * @template A, B
+ * @typedef {(input: A) => B | undefined | null} Selector
+ */
+
+/** @type {TwoKeyWeakMap<Selector<EXPECTED_ANY, EXPECTED_ANY>, Comparator<EXPECTED_ANY>, Comparator<EXPECTED_ANY>>}} */
+const compareSelectCache = new TwoKeyWeakMap();
+
+/**
+ * @template T
+ * @template R
+ * @param {Selector<T, R>} getter getter for value
+ * @param {Comparator<R>} comparator comparator
+ * @returns {Comparator<T>} comparator
+ */
+const compareSelect = (getter, comparator) => {
+	const cacheEntry = compareSelectCache.get(getter, comparator);
+	if (cacheEntry !== undefined) return cacheEntry;
+	/**
+	 * @param {T} a first value
+	 * @param {T} b second value
+	 * @returns {-1|0|1} compare result
+	 */
+	const result = (a, b) => {
+		const aValue = getter(a);
+		const bValue = getter(b);
+		if (aValue !== undefined && aValue !== null) {
+			if (bValue !== undefined && bValue !== null) {
+				return comparator(aValue, bValue);
+			}
+			return -1;
+		}
+		if (bValue !== undefined && bValue !== null) {
+			return 1;
+		}
+		return 0;
+	};
+	compareSelectCache.set(getter, comparator, result);
+	return result;
+};
+module.exports.compareSelect = compareSelect;
+
+/** @type {WeakMap<Comparator<EXPECTED_ANY>, Comparator<Iterable<EXPECTED_ANY>>>} */
+const compareIteratorsCache = new WeakMap();
+
+/**
+ * @template T
+ * @param {Comparator<T>} elementComparator comparator for elements
+ * @returns {Comparator<Iterable<T>>} comparator for iterables of elements
+ */
+const compareIterables = elementComparator => {
+	const cacheEntry = compareIteratorsCache.get(elementComparator);
+	if (cacheEntry !== undefined) return cacheEntry;
+	/**
+	 * @param {Iterable<T>} a first value
+	 * @param {Iterable<T>} b second value
+	 * @returns {-1|0|1} compare result
+	 */
+	const result = (a, b) => {
+		const aI = a[Symbol.iterator]();
+		const bI = b[Symbol.iterator]();
+		while (true) {
+			const aItem = aI.next();
+			const bItem = bI.next();
+			if (aItem.done) {
+				return bItem.done ? 0 : -1;
+			} else if (bItem.done) {
+				return 1;
+			}
+			const res = elementComparator(aItem.value, bItem.value);
+			if (res !== 0) return res;
+		}
+	};
+	compareIteratorsCache.set(elementComparator, result);
+	return result;
+};
+module.exports.compareIterables = compareIterables;
+
+// TODO this is no longer needed when minimum node.js version is >= 12
+// since these versions ship with a stable sort function
+/**
+ * @template T
+ * @param {Iterable<T>} iterable original ordered list
+ * @returns {Comparator<T>} comparator
+ */
+module.exports.keepOriginalOrder = iterable => {
+	/** @type {Map<T, number>} */
+	const map = new Map();
+	let i = 0;
+	for (const item of iterable) {
+		map.set(item, i++);
+	}
+	return (a, b) =>
+		compareNumbers(
+			/** @type {number} */ (map.get(a)),
+			/** @type {number} */ (map.get(b))
+		);
+};
+
+/**
+ * @param {ChunkGraph} chunkGraph the chunk graph
+ * @returns {Comparator<Chunk>} comparator
+ */
+module.exports.compareChunksNatural = chunkGraph => {
+	const cmpFn = module.exports.compareModulesById(chunkGraph);
+	const cmpIterableFn = compareIterables(cmpFn);
+	return concatComparators(
+		compareSelect(
+			chunk => /** @type {string|number} */ (chunk.name),
+			compareIds
+		),
+		compareSelect(chunk => chunk.runtime, compareRuntime),
+		compareSelect(
+			/**
+			 * @param {Chunk} chunk a chunk
+			 * @returns {Iterable<Module>} modules
+			 */
+			chunk => chunkGraph.getOrderedChunkModulesIterable(chunk, cmpFn),
+			cmpIterableFn
+		)
+	);
+};
+
+/**
+ * Compare two locations
+ * @param {DependencyLocation} a A location node
+ * @param {DependencyLocation} b A location node
+ * @returns {-1|0|1} sorting comparator value
+ */
+module.exports.compareLocations = (a, b) => {
+	const isObjectA = typeof a === "object" && a !== null;
+	const isObjectB = typeof b === "object" && b !== null;
+	if (!isObjectA || !isObjectB) {
+		if (isObjectA) return 1;
+		if (isObjectB) return -1;
+		return 0;
+	}
+	if ("start" in a) {
+		if ("start" in b) {
+			const ap = a.start;
+			const bp = b.start;
+			if (ap.line < bp.line) return -1;
+			if (ap.line > bp.line) return 1;
+			if (/** @type {number} */ (ap.column) < /** @type {number} */ (bp.column))
+				return -1;
+			if (/** @type {number} */ (ap.column) > /** @type {number} */ (bp.column))
+				return 1;
+		} else return -1;
+	} else if ("start" in b) return 1;
+	if ("name" in a) {
+		if ("name" in b) {
+			if (a.name < b.name) return -1;
+			if (a.name > b.name) return 1;
+		} else return -1;
+	} else if ("name" in b) return 1;
+	if ("index" in a) {
+		if ("index" in b) {
+			if (/** @type {number} */ (a.index) < /** @type {number} */ (b.index))
+				return -1;
+			if (/** @type {number} */ (a.index) > /** @type {number} */ (b.index))
+				return 1;
+		} else return -1;
+	} else if ("index" in b) return 1;
+	return 0;
+};