Porting 100k lines from TypeScript to Rust using Claude Code in a month
Summary
The article narrates experimenting with Claude Code to port a ~100k line codebase from JavaScript/TypeScript to Rust within a month, detailing challenges, sandboxes, and iterative workflows. It highlights the need for engineering oversight when using AI-assisted coding, and reports a complete Rust port with a notable speedup over the original JS implementation. The piece frames LLM-powered coding as a valuable tool that requires careful prompting and manual cleanup to achieve reliable results.