Method addModuleRuntimeRequirements

lib/ChunkGraph.js:1665–1701

* Adds module runtime requirements. * @param {Module} module the module * @param {RuntimeSpec} runtime the runtime * @param {RuntimeRequirements} items runtime requirements to be added (ownership of this Set is given to ChunkGraph when transferOwnership not false) * @param {boolean} transfer

(
		module,
		runtime,
		items,
		transferOwnership = true
	)

	 * @returns {void}
	 */
	addModuleRuntimeRequirements(
		module,
		runtime,
		items,
		transferOwnership = true
	) {
		const cgm = this._getChunkGraphModule(module);
		const runtimeRequirementsMap = cgm.runtimeRequirements;
		if (!transferOwnership) this._sharedModuleRuntimeRequirements.add(items);
		if (runtimeRequirementsMap === undefined) {
			/** @type {ChunkGraphRuntimeRequirements} */
			const map = new RuntimeSpecMap();
			map.set(runtime, items);
			cgm.runtimeRequirements = map;
			return;
		}
		runtimeRequirementsMap.update(runtime, (runtimeRequirements) => {
			if (runtimeRequirements === undefined) return items;
			const owned =
				!this._sharedModuleRuntimeRequirements.has(runtimeRequirements);
			// Merge into whichever owned Set is larger; otherwise copy-on-write.
			if (owned && runtimeRequirements.size >= items.size) {
				for (const item of items) runtimeRequirements.add(item);
				return runtimeRequirements;
			} else if (transferOwnership) {
				for (const item of runtimeRequirements) items.add(item);
				this._sharedModuleRuntimeRequirements.delete(items);
				return items;
			} else if (owned) {
				for (const item of items) runtimeRequirements.add(item);
				return runtimeRequirements;
			}
			const merged = new Set(runtimeRequirements);
			for (const item of items) merged.add(item);
			return merged;
		});
	}

	/**
	 * Adds chunk runtime requirements.