The **script‑manager** package provides a lightweight Node.js library for safely executing untrusted or resource‑intensive JavaScript code. It runs user scripts inside a pool of reusable worker processes (or via an HTTP‑server or dedicated process), enforces timeouts, isolates the VM, and supports callbacks between the script and the parent, making it ideal for services that need to sandbox custom scripts—such as SaaS platforms, testing tools, or any application that must run third‑party code without jeopardizing the main Node process.