node‑posix is an npm module that adds the POSIX system calls missing from Node’s core — functions such as chroot, getuid/getgid, resource‑limit setting, syslog, process‑group control, and more — so developers can perform low‑level Unix operations (e.g., privilege changes, logging, resource management) directly from JavaScript. It’s aimed at anyone building server‑side or CLI tools that need portable, production‑ready Posix‑level capabilities beyond what Node provides out of the box.