Function nextAvailableFilename

src/shared/utils/fs.ts:527–544

(folder: string, prefix: string, suffix = "")

 * @param suffix suffix of the directory/file
 */
export function nextAvailableFilename(folder: string, prefix: string, suffix = ""): string {
	// Set an upper bound on how many attempts we should make in getting a non-existent name.
	const maxSearchLimit = 128;

	for (let index = 1; index <= maxSearchLimit; index++) {
		const name = `${prefix}${index}${suffix}`;
		const fullPath = path.join(folder, name);

		if (!fs.existsSync(fullPath)) {
			// Name doesn't appear to exist on-disk and thus can be used - return it.
			return name;
		}
	}

	// We hit the search limit, so return {prefix}{index} (eg. mydir1) and allow the extension to
	// handle the already-exists condition if user doesn't change it manually.
	return `${prefix}1${suffix}`;
}

/// Updates the modification time of a file to the current time (if the file exists).
export function touchFile(filePath: string): void {