Ladybird Browser adopts Rust, with help from AI
Summary
Ladybird Browser announces a move to Rust to replace C++ for memory safety, starting with porting LibJS. The port leveraged AI tools (Claude Code and Codex) under human guidance to produce byte-for-byte identical Rust output with zero regressions, and extensive testing confirmed equivalence. The project will continue to coexist Rust and C++ via interop boundaries, offering a concrete example of AI-assisted modernization in a browser engine.