persist‑path is a tiny Node.js utility that returns the correct filesystem location for storing an application’s persistent data on the current operating system. It automatically resolves to a hidden directory under the user’s home on Linux/BSD, to `~/Library/Preferences` on macOS, and to the `%APPDATA%` folder on Windows, optionally appending a project‑specific sub‑path supplied by the caller. It’s aimed at developers who need a simple, cross‑platform way to locate configuration or data files.