Function modulesBySourceType

lib/ChunkGraph.js:108–134

(sourceTypesByModule)

 * @returns {ModulesBySourceType} modules by source type
 */
const modulesBySourceType = (sourceTypesByModule) => (set) => {
	/** @typedef {SortableSet<Module>} ModuleSortableSet */
	/** @type {Map<SourceType, ModuleSortableSet>} */
	const map = new Map();
	for (const module of set) {
		const sourceTypes =
			(sourceTypesByModule && sourceTypesByModule.get(module)) ||
			module.getSourceTypes();
		for (const sourceType of sourceTypes) {
			let innerSet = map.get(sourceType);
			if (innerSet === undefined) {
				/** @type {ModuleSortableSet} */
				innerSet = new SortableSet();
				map.set(sourceType, innerSet);
			}
			innerSet.add(module);
		}
	}
	for (const [key, innerSet] of map) {
		// When all modules have the source type, we reuse the original SortableSet
		// to benefit from the shared cache (especially for sorting)
		if (innerSet.size === set.size) {
			map.set(key, set);
		}
	}
	return map;
};

/** @typedef {(set: SortableSet<Module>) => Map<string, SortableSet<Module>>} ModulesBySourceType */