Brimstone

lastmod 2025-11-19created 2025-11-192 edits

An ES2025 JavaScript engine written in Rust

About

• A JavaScript engine implemented from scratch in Rust, with near-complete support for the ECMAScript specification
• Currently passes over 97% of the ECMAScript language, verified with test262-based tests
• Inspired by V8's Ignition design and SerenityOS's LibJS, it implements most components itself with minimal dependencies
• Provides spec-compliant built-in objects and functions, including a bytecode VM, a compacting garbage collector, and a custom RegExp engine and parser
• Not yet production-ready, but an important step forward in developing a Rust-based JS engine with ES2025-level features

See also

• Rust
• JavaScript

Favorite site

• Github - Hans-Halverson/brimstone
• Brimstone - An ES2025 JavaScript engine written in Rust | GeekNews