Feng Ari is a full‑featured Lua 5.3 virtual machine written in modern JavaScript (ES6) that runs in both Node.js and web browsers. It provides the same C‑API as Lua, exposing `lua`, `lauxlib` and `lualib` modules so developers can execute Lua code, exchange data, and interoperate with JavaScript from either server‑side or client‑side environments. The core library is intended for Lua programmers and JS developers who need to embed or run Lua scripts without a native Lua runtime.