Method getChildIdsByOrdersMap

lib/Chunk.js:898–936

* Gets child ids by orders map. * @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 {Ch

(chunkGraph, includeDirectChildren, filterFn)

	 * @returns {ChunkChildIdsByOrdersMapByData} a record object of names to lists of child ids(?) by chunk id
	 */
	getChildIdsByOrdersMap(chunkGraph, includeDirectChildren, filterFn) {
		/** @type {ChunkChildIdsByOrdersMapByData} */
		const chunkMaps = Object.create(null);

		/**
		 * Adds child ids by orders to map.
		 * @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 {Chunks} */
			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;
	}

	/**
	 * Checks whether this chunk contains the chunk graph.