Method optimize

lib/FileSystemInfo.js:720–937

* Processes the provided new snapshot. * @param {Snapshot} newSnapshot snapshot * @param {Set<string>} capturedFiles files to snapshot/share * @returns {void}

(newSnapshot, capturedFiles)

	 * @returns {void}
	 */
	optimize(newSnapshot, capturedFiles) {
		if (capturedFiles.size === 0) {
			return;
		}
		/**
		 * Increase shared and store optimization entry.
		 * @param {SnapshotOptimizationEntry} entry optimization entry
		 * @returns {void}
		 */
		const increaseSharedAndStoreOptimizationEntry = (entry) => {
			if (entry.children !== undefined) {
				for (const child of entry.children) {
					increaseSharedAndStoreOptimizationEntry(child);
				}
			}
			entry.shared++;
			storeOptimizationEntry(entry);
		};
		/**
		 * Stores optimization entry.
		 * @param {SnapshotOptimizationEntry} entry optimization entry
		 * @returns {void}
		 */
		const storeOptimizationEntry = (entry) => {
			for (const path of /** @type {SnapshotContent} */ (
				entry.snapshotContent
			)) {
				const old =
					/** @type {SnapshotOptimizationEntry} */
					(this._map.get(path));
				if (old.shared < entry.shared) {
					this._map.set(path, entry);
				}
				capturedFiles.delete(path);
			}
		};

		/** @type {SnapshotOptimizationEntry | undefined} */
		let newOptimizationEntry;

		const capturedFilesSize = capturedFiles.size;

		/** @type {Set<SnapshotOptimizationEntry> | undefined} */
		const optimizationEntries = new Set();

		for (const path of capturedFiles) {
			const optimizationEntry = this._map.get(path);
			if (optimizationEntry === undefined) {
				if (newOptimizationEntry === undefined) {
					newOptimizationEntry = {
						snapshot: newSnapshot,
						shared: 0,
						snapshotContent: undefined,
						children: undefined
					};
				}
				this._map.set(path, newOptimizationEntry);
			} else {