ulua is a pure Rust implementation of the Luau language that supports both interpreter and JIT compilation modes for native machine code generation. It provides a complete language pipeline from lexical analysis through bytecode compilation and execution, with ergonomic Rust integration and WebAssembly compatibility. The project is a modernized refactor of luau-rs/luau that eliminates unsafe code, applies idiomatic Rust patterns, and offers both CLI and high-level API interfaces.