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Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
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/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/

"use strict";

const ChunkGraph = require("./ChunkGraph");
const Entrypoint = require("./Entrypoint");
const { intersect } = require("./util/SetHelpers");
const SortableSet = require("./util/SortableSet");
const StringXor = require("./util/StringXor");
const {
	compareModulesByIdentifier,
	compareChunkGroupsByIndex,
	compareModulesById
} = require("./util/comparators");
const { createArrayToSetDeprecationSet } = require("./util/deprecation");
const { mergeRuntime } = require("./util/runtime");

/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("./ChunkGraph").ChunkFilterPredicate} ChunkFilterPredicate */
/** @typedef {import("./ChunkGraph").ChunkSizeOptions} ChunkSizeOptions */
/** @typedef {import("./ChunkGraph").ModuleFilterPredicate} ModuleFilterPredicate */
/** @typedef {import("./ChunkGroup")} ChunkGroup */
/** @typedef {import("./ChunkGroup").ChunkGroupOptions} ChunkGroupOptions */
/** @typedef {import("./Compilation")} Compilation */
/** @typedef {import("./Compilation").AssetInfo} AssetInfo */
/** @typedef {import("./Compilation").PathData} PathData */
/** @typedef {import("./Entrypoint").EntryOptions} EntryOptions */
/** @typedef {import("./Module")} Module */
/** @typedef {import("./ModuleGraph")} ModuleGraph */
/** @typedef {import("./util/Hash")} Hash */
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */

/** @typedef {number | string} ChunkId */

const ChunkFilesSet = createArrayToSetDeprecationSet("chunk.files");

/**
 * @typedef {object} WithId an object who has an id property *
 * @property {string | number} id the id of the object
 */

/**
 * @deprecated
 * @typedef {object} ChunkMaps
 * @property {Record} hash
 * @property {Record>} contentHash
 * @property {Record} name
 */

/**
 * @deprecated
 * @typedef {object} ChunkModuleMaps
 * @property {Record} id
 * @property {Record} hash
 */

let debugId = 1000;

/**
 * A Chunk is a unit of encapsulation for Modules.
 * Chunks are "rendered" into bundles that get emitted when the build completes.
 */
class Chunk {
	/**
	 * @param {string=} name of chunk being created, is optional (for subclasses)
	 * @param {boolean} backCompat enable backward-compatibility
	 */
	constructor(name, backCompat = true) {
		/** @type {ChunkId | null} */
		this.id = null;
		/** @type {ChunkId[] | null} */
		this.ids = null;
		/** @type {number} */
		this.debugId = debugId++;
		/** @type {string | undefined} */
		this.name = name;
		/** @type {SortableSet} */
		this.idNameHints = new SortableSet();
		/** @type {boolean} */
		this.preventIntegration = false;
		/** @type {(string | function(PathData, AssetInfo=): string) | undefined} */
		this.filenameTemplate = undefined;
		/** @type {(string | function(PathData, AssetInfo=): string) | undefined} */
		this.cssFilenameTemplate = undefined;
		/**
		 * @private
		 * @type {SortableSet}
		 */
		this._groups = new SortableSet(undefined, compareChunkGroupsByIndex);
		/** @type {RuntimeSpec} */
		this.runtime = undefined;
		/** @type {Set} */
		this.files = backCompat ? new ChunkFilesSet() : new Set();
		/** @type {Set} */
		this.auxiliaryFiles = new Set();
		/** @type {boolean} */
		this.rendered = false;
		/** @type {string=} */
		this.hash = undefined;
		/** @type {Record} */
		this.contentHash = Object.create(null);
		/** @type {string=} */
		this.renderedHash = undefined;
		/** @type {string=} */
		this.chunkReason = undefined;
		/** @type {boolean} */
		this.extraAsync = false;
	}

	// TODO remove in webpack 6
	// BACKWARD-COMPAT START
	get entryModule() {
		const entryModules = Array.from(
			ChunkGraph.getChunkGraphForChunk(
				this,
				"Chunk.entryModule",
				"DEP_WEBPACK_CHUNK_ENTRY_MODULE"
			).getChunkEntryModulesIterable(this)
		);
		if (entryModules.length === 0) {
			return undefined;
		} else if (entryModules.length === 1) {
			return entryModules[0];
		} else {
			throw new Error(
				"Module.entryModule: Multiple entry modules are not supported by the deprecated API (Use the new ChunkGroup API)"
			);
		}
	}

	/**
	 * @returns {boolean} true, if the chunk contains an entry module
	 */
	hasEntryModule() {
		return (
			ChunkGraph.getChunkGraphForChunk(
				this,
				"Chunk.hasEntryModule",
				"DEP_WEBPACK_CHUNK_HAS_ENTRY_MODULE"
			).getNumberOfEntryModules(this) > 0
		);
	}

	/**
	 * @param {Module} module the module
	 * @returns {boolean} true, if the chunk could be added
	 */
	addModule(module) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.addModule",
			"DEP_WEBPACK_CHUNK_ADD_MODULE"
		);
		if (chunkGraph.isModuleInChunk(module, this)) return false;
		chunkGraph.connectChunkAndModule(this, module);
		return true;
	}

	/**
	 * @param {Module} module the module
	 * @returns {void}
	 */
	removeModule(module) {
		ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.removeModule",
			"DEP_WEBPACK_CHUNK_REMOVE_MODULE"
		).disconnectChunkAndModule(this, module);
	}

	/**
	 * @returns {number} the number of module which are contained in this chunk
	 */
	getNumberOfModules() {
		return ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.getNumberOfModules",
			"DEP_WEBPACK_CHUNK_GET_NUMBER_OF_MODULES"
		).getNumberOfChunkModules(this);
	}

	get modulesIterable() {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.modulesIterable",
			"DEP_WEBPACK_CHUNK_MODULES_ITERABLE"
		);
		return chunkGraph.getOrderedChunkModulesIterable(
			this,
			compareModulesByIdentifier
		);
	}

	/**
	 * @param {Chunk} otherChunk the chunk to compare with
	 * @returns {-1|0|1} the comparison result
	 */
	compareTo(otherChunk) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.compareTo",
			"DEP_WEBPACK_CHUNK_COMPARE_TO"
		);
		return chunkGraph.compareChunks(this, otherChunk);
	}

	/**
	 * @param {Module} module the module
	 * @returns {boolean} true, if the chunk contains the module
	 */
	containsModule(module) {
		return ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.containsModule",
			"DEP_WEBPACK_CHUNK_CONTAINS_MODULE"
		).isModuleInChunk(module, this);
	}

	/**
	 * @returns {Module[]} the modules for this chunk
	 */
	getModules() {
		return ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.getModules",
			"DEP_WEBPACK_CHUNK_GET_MODULES"
		).getChunkModules(this);
	}

	/**
	 * @returns {void}
	 */
	remove() {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.remove",
			"DEP_WEBPACK_CHUNK_REMOVE"
		);
		chunkGraph.disconnectChunk(this);
		this.disconnectFromGroups();
	}

	/**
	 * @param {Module} module the module
	 * @param {Chunk} otherChunk the target chunk
	 * @returns {void}
	 */
	moveModule(module, otherChunk) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.moveModule",
			"DEP_WEBPACK_CHUNK_MOVE_MODULE"
		);
		chunkGraph.disconnectChunkAndModule(this, module);
		chunkGraph.connectChunkAndModule(otherChunk, module);
	}

	/**
	 * @param {Chunk} otherChunk the other chunk
	 * @returns {boolean} true, if the specified chunk has been integrated
	 */
	integrate(otherChunk) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.integrate",
			"DEP_WEBPACK_CHUNK_INTEGRATE"
		);
		if (chunkGraph.canChunksBeIntegrated(this, otherChunk)) {
			chunkGraph.integrateChunks(this, otherChunk);
			return true;
		} else {
			return false;
		}
	}

	/**
	 * @param {Chunk} otherChunk the other chunk
	 * @returns {boolean} true, if chunks could be integrated
	 */
	canBeIntegrated(otherChunk) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.canBeIntegrated",
			"DEP_WEBPACK_CHUNK_CAN_BE_INTEGRATED"
		);
		return chunkGraph.canChunksBeIntegrated(this, otherChunk);
	}

	/**
	 * @returns {boolean} true, if this chunk contains no module
	 */
	isEmpty() {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.isEmpty",
			"DEP_WEBPACK_CHUNK_IS_EMPTY"
		);
		return chunkGraph.getNumberOfChunkModules(this) === 0;
	}

	/**
	 * @returns {number} total size of all modules in this chunk
	 */
	modulesSize() {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.modulesSize",
			"DEP_WEBPACK_CHUNK_MODULES_SIZE"
		);
		return chunkGraph.getChunkModulesSize(this);
	}

	/**
	 * @param {ChunkSizeOptions} options options object
	 * @returns {number} total size of this chunk
	 */
	size(options = {}) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.size",
			"DEP_WEBPACK_CHUNK_SIZE"
		);
		return chunkGraph.getChunkSize(this, options);
	}

	/**
	 * @param {Chunk} otherChunk the other chunk
	 * @param {ChunkSizeOptions} options options object
	 * @returns {number} total size of the chunk or false if the chunk can't be integrated
	 */
	integratedSize(otherChunk, options) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.integratedSize",
			"DEP_WEBPACK_CHUNK_INTEGRATED_SIZE"
		);
		return chunkGraph.getIntegratedChunksSize(this, otherChunk, options);
	}

	/**
	 * @param {ModuleFilterPredicate} filterFn function used to filter modules
	 * @returns {ChunkModuleMaps} module map information
	 */
	getChunkModuleMaps(filterFn) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.getChunkModuleMaps",
			"DEP_WEBPACK_CHUNK_GET_CHUNK_MODULE_MAPS"
		);
		/** @type {Record} */
		const chunkModuleIdMap = Object.create(null);
		/** @type {Record} */
		const chunkModuleHashMap = Object.create(null);

		for (const asyncChunk of this.getAllAsyncChunks()) {
			/** @type {ChunkId[] | undefined} */
			let array;
			for (const module of chunkGraph.getOrderedChunkModulesIterable(
				asyncChunk,
				compareModulesById(chunkGraph)
			)) {
				if (filterFn(module)) {
					if (array === undefined) {
						array = [];
						chunkModuleIdMap[/** @type {ChunkId} */ (asyncChunk.id)] = array;
					}
					const moduleId = chunkGraph.getModuleId(module);
					array.push(moduleId);
					chunkModuleHashMap[moduleId] = chunkGraph.getRenderedModuleHash(
						module,
						undefined
					);
				}
			}
		}

		return {
			id: chunkModuleIdMap,
			hash: chunkModuleHashMap
		};
	}

	/**
	 * @param {ModuleFilterPredicate} filterFn predicate function used to filter modules
	 * @param {ChunkFilterPredicate=} filterChunkFn predicate function used to filter chunks
	 * @returns {boolean} return true if module exists in graph
	 */
	hasModuleInGraph(filterFn, filterChunkFn) {
		const chunkGraph = ChunkGraph.getChunkGraphForChunk(
			this,
			"Chunk.hasModuleInGraph",
			"DEP_WEBPACK_CHUNK_HAS_MODULE_IN_GRAPH"
		);
		return chunkGraph.hasModuleInGraph(this, filterFn, filterChunkFn);
	}

	/**
	 * @deprecated
	 * @param {boolean} realHash whether the full hash or the rendered hash is to be used
	 * @returns {ChunkMaps} the chunk map information
	 */
	getChunkMaps(realHash) {
		/** @type {Record} */
		const chunkHashMap = Object.create(null);
		/** @type {Record>} */
		const chunkContentHashMap = Object.create(null);
		/** @type {Record} */
		const chunkNameMap = Object.create(null);

		for (const chunk of this.getAllAsyncChunks()) {
			const id = /** @type {ChunkId} */ (chunk.id);
			chunkHashMap[id] =
				/** @type {string} */
				(realHash ? chunk.hash : chunk.renderedHash);
			for (const key of Object.keys(chunk.contentHash)) {
				if (!chunkContentHashMap[key]) {
					chunkContentHashMap[key] = Object.create(null);
				}
				chunkContentHashMap[key][id] = chunk.contentHash[key];
			}
			if (chunk.name) {
				chunkNameMap[id] = chunk.name;
			}
		}

		return {
			hash: chunkHashMap,
			contentHash: chunkContentHashMap,
			name: chunkNameMap
		};
	}
	// BACKWARD-COMPAT END

	/**
	 * @returns {boolean} whether or not the Chunk will have a runtime
	 */
	hasRuntime() {
		for (const chunkGroup of this._groups) {
			if (
				chunkGroup instanceof Entrypoint &&
				chunkGroup.getRuntimeChunk() === this
			) {
				return true;
			}
		}
		return false;
	}

	/**
	 * @returns {boolean} whether or not this chunk can be an initial chunk
	 */
	canBeInitial() {
		for (const chunkGroup of this._groups) {
			if (chunkGroup.isInitial()) return true;
		}
		return false;
	}

	/**
	 * @returns {boolean} whether this chunk can only be an initial chunk
	 */
	isOnlyInitial() {
		if (this._groups.size <= 0) return false;
		for (const chunkGroup of this._groups) {
			if (!chunkGroup.isInitial()) return false;
		}
		return true;
	}

	/**
	 * @returns {EntryOptions | undefined} the entry options for this chunk
	 */
	getEntryOptions() {
		for (const chunkGroup of this._groups) {
			if (chunkGroup instanceof Entrypoint) {
				return chunkGroup.options;
			}
		}
		return undefined;
	}

	/**
	 * @param {ChunkGroup} chunkGroup the chunkGroup the chunk is being added
	 * @returns {void}
	 */
	addGroup(chunkGroup) {
		this._groups.add(chunkGroup);
	}

	/**
	 * @param {ChunkGroup} chunkGroup the chunkGroup the chunk is being removed from
	 * @returns {void}
	 */
	removeGroup(chunkGroup) {
		this._groups.delete(chunkGroup);
	}

	/**
	 * @param {ChunkGroup} chunkGroup the chunkGroup to check
	 * @returns {boolean} returns true if chunk has chunkGroup reference and exists in chunkGroup
	 */
	isInGroup(chunkGroup) {
		return this._groups.has(chunkGroup);
	}

	/**
	 * @returns {number} the amount of groups that the said chunk is in
	 */
	getNumberOfGroups() {
		return this._groups.size;
	}

	/**
	 * @returns {SortableSet} the chunkGroups that the said chunk is referenced in
	 */
	get groupsIterable() {
		this._groups.sort();
		return this._groups;
	}

	/**
	 * @returns {void}
	 */
	disconnectFromGroups() {
		for (const chunkGroup of this._groups) {
			chunkGroup.removeChunk(this);
		}
	}

	/**
	 * @param {Chunk} newChunk the new chunk that will be split out of
	 * @returns {void}
	 */
	split(newChunk) {
		for (const chunkGroup of this._groups) {
			chunkGroup.insertChunk(newChunk, this);
			newChunk.addGroup(chunkGroup);
		}
		for (const idHint of this.idNameHints) {
			newChunk.idNameHints.add(idHint);
		}
		newChunk.runtime = mergeRuntime(newChunk.runtime, this.runtime);
	}

	/**
	 * @param {Hash} hash hash (will be modified)
	 * @param {ChunkGraph} chunkGraph the chunk graph
	 * @returns {void}
	 */
	updateHash(hash, chunkGraph) {
		hash.update(
			`${this.id} ${this.ids ? this.ids.join() : ""} ${this.name || ""} `
		);
		const xor = new StringXor();
		for (const m of chunkGraph.getChunkModulesIterable(this)) {
			xor.add(chunkGraph.getModuleHash(m, this.runtime));
		}
		xor.updateHash(hash);
		const entryModules =
			chunkGraph.getChunkEntryModulesWithChunkGroupIterable(this);
		for (const [m, chunkGroup] of entryModules) {
			hash.update(
				`entry${chunkGraph.getModuleId(m)}${
					/** @type {ChunkGroup} */ (chunkGroup).id
				}`
			);
		}
	}

	/**
	 * @returns {Set} a set of all the async chunks
	 */
	getAllAsyncChunks() {
		const queue = new Set();
		const chunks = new Set();

		const initialChunks = intersect(
			Array.from(this.groupsIterable, g => new Set(g.chunks))
		);

		const initialQueue = new Set(this.groupsIterable);

		for (const chunkGroup of initialQueue) {
			for (const child of chunkGroup.childrenIterable) {
				if (child instanceof Entrypoint) {
					initialQueue.add(child);
				} else {
					queue.add(child);
				}
			}
		}

		for (const chunkGroup of queue) {
			for (const chunk of chunkGroup.chunks) {
				if (!initialChunks.has(chunk)) {
					chunks.add(chunk);
				}
			}
			for (const child of chunkGroup.childrenIterable) {
				queue.add(child);
			}
		}

		return chunks;
	}

	/**
	 * @returns {Set} a set of all the initial chunks (including itself)
	 */
	getAllInitialChunks() {
		const chunks = new Set();
		const queue = new Set(this.groupsIterable);
		for (const group of queue) {
			if (group.isInitial()) {
				for (const c of group.chunks) chunks.add(c);
				for (const g of group.childrenIterable) queue.add(g);
			}
		}
		return chunks;
	}

	/**
	 * @returns {Set} a set of all the referenced chunks (including itself)
	 */
	getAllReferencedChunks() {
		const queue = new Set(this.groupsIterable);
		const chunks = new Set();

		for (const chunkGroup of queue) {
			for (const chunk of chunkGroup.chunks) {
				chunks.add(chunk);
			}
			for (const child of chunkGroup.childrenIterable) {
				queue.add(child);
			}
		}

		return chunks;
	}

	/**
	 * @returns {Set} a set of all the referenced entrypoints
	 */
	getAllReferencedAsyncEntrypoints() {
		const queue = new Set(this.groupsIterable);
		const entrypoints = new Set();

		for (const chunkGroup of queue) {
			for (const entrypoint of chunkGroup.asyncEntrypointsIterable) {
				entrypoints.add(entrypoint);
			}
			for (const child of chunkGroup.childrenIterable) {
				queue.add(child);
			}
		}

		return entrypoints;
	}

	/**
	 * @returns {boolean} true, if the chunk references async chunks
	 */
	hasAsyncChunks() {
		const queue = new Set();

		const initialChunks = intersect(
			Array.from(this.groupsIterable, g => new Set(g.chunks))
		);

		for (const chunkGroup of this.groupsIterable) {
			for (const child of chunkGroup.childrenIterable) {
				queue.add(child);
			}
		}

		for (const chunkGroup of queue) {
			for (const chunk of chunkGroup.chunks) {
				if (!initialChunks.has(chunk)) {
					return true;
				}
			}
			for (const child of chunkGroup.childrenIterable) {
				queue.add(child);
			}
		}

		return false;
	}

	/**
	 * @param {ChunkGraph} chunkGraph the chunk graph
	 * @param {ChunkFilterPredicate=} filterFn function used to filter chunks
	 * @returns {Record} a record object of names to lists of child ids(?)
	 */
	getChildIdsByOrders(chunkGraph, filterFn) {
		/** @type {Map} */
		const lists = new Map();
		for (const group of this.groupsIterable) {
			if (group.chunks[group.chunks.length - 1] === this) {
				for (const childGroup of group.childrenIterable) {
					for (const key of Object.keys(childGroup.options)) {
						if (key.endsWith("Order")) {
							const name = key.slice(0, key.length - "Order".length);
							let list = lists.get(name);
							if (list === undefined) {
								list = [];
								lists.set(name, list);
							}
							list.push({
								order:
									/** @type {number} */
									(
										childGroup.options[
											/** @type {keyof ChunkGroupOptions} */ (key)
										]
									),
								group: childGroup
							});
						}
					}
				}
			}
		}
		/** @type {Record} */
		const result = Object.create(null);
		for (const [name, list] of lists) {
			list.sort((a, b) => {
				const cmp = b.order - a.order;
				if (cmp !== 0) return cmp;
				return a.group.compareTo(chunkGraph, b.group);
			});
			/** @type {Set} */
			const chunkIdSet = new Set();
			for (const item of list) {
				for (const chunk of item.group.chunks) {
					if (filterFn && !filterFn(chunk, chunkGraph)) continue;
					chunkIdSet.add(/** @type {ChunkId} */ (chunk.id));
				}
			}
			if (chunkIdSet.size > 0) {
				result[name] = Array.from(chunkIdSet);
			}
		}
		return result;
	}

	/**
	 * @param {ChunkGraph} chunkGraph the chunk graph
	 * @param {string} type option name
	 * @returns {{ onChunks: Chunk[], chunks: Set }[] | undefined} referenced chunks for a specific type
	 */
	getChildrenOfTypeInOrder(chunkGraph, type) {
		const list = [];
		for (const group of this.groupsIterable) {
			for (const childGroup of group.childrenIterable) {
				const order =
					childGroup.options[/** @type {keyof ChunkGroupOptions} */ (type)];
				if (order === undefined) continue;
				list.push({
					order,
					group,
					childGroup
				});
			}
		}
		if (list.length === 0) return undefined;
		list.sort((a, b) => {
			const cmp =
				/** @type {number} */ (b.order) - /** @type {number} */ (a.order);
			if (cmp !== 0) return cmp;
			return a.group.compareTo(chunkGraph, b.group);
		});
		const result = [];
		let lastEntry;
		for (const { group, childGroup } of list) {
			if (lastEntry && lastEntry.onChunks === group.chunks) {
				for (const chunk of childGroup.chunks) {
					lastEntry.chunks.add(chunk);
				}
			} else {
				result.push(
					(lastEntry = {
						onChunks: group.chunks,
						chunks: new Set(childGroup.chunks)
					})
				);
			}
		}
		return result;
	}

	/**
	 * @param {ChunkGraph} chunkGraph the chunk graph
	 * @param {boolean=} includeDirectChildren include direct children (by default only children of async children are included)
	 * @param {ChunkFilterPredicate=} filterFn function used to filter chunks
	 * @returns {Record>} a record object of names to lists of child ids(?) by chunk id
	 */
	getChildIdsByOrdersMap(chunkGraph, includeDirectChildren, filterFn) {
		/** @type {Record>} */
		const chunkMaps = Object.create(null);

		/**
		 * @param {Chunk} chunk a chunk
		 * @returns {void}
		 */
		const addChildIdsByOrdersToMap = chunk => {
			const data = chunk.getChildIdsByOrders(chunkGraph, filterFn);
			for (const key of Object.keys(data)) {
				let chunkMap = chunkMaps[key];
				if (chunkMap === undefined) {
					chunkMaps[key] = chunkMap = Object.create(null);
				}
				chunkMap[/** @type {ChunkId} */ (chunk.id)] = data[key];
			}
		};

		if (includeDirectChildren) {
			/** @type {Set} */
			const chunks = new Set();
			for (const chunkGroup of this.groupsIterable) {
				for (const chunk of chunkGroup.chunks) {
					chunks.add(chunk);
				}
			}
			for (const chunk of chunks) {
				addChildIdsByOrdersToMap(chunk);
			}
		}

		for (const chunk of this.getAllAsyncChunks()) {
			addChildIdsByOrdersToMap(chunk);
		}

		return chunkMaps;
	}
}

module.exports = Chunk;