Theo - t3.gg(@theo):Announcing tsc-rs (aka ts-rust), my complete rewrite of the Typescript compiler, type checker, and LSP, all in Rust. This is a project I've had agents working on for 5 months now. I burned ~$400k of Codex tokens and got nowhere. Burned ~$20k of Opus and got there in 2 weeks. I have not read a single line of the code. tsc-rs is an open source drop-in replacement for tsc, and it's available now.

Theo - t3.gg

@theo

Full time CEO @t3dotcodes & @t3dotchat. Part time YouTuber, investor, and developer

Joined October 2016

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Theo - t3.gg@theo

2026.10.07 11:07

Announcing tsc-rs (aka ts-rust), my complete rewrite of the Typescript compiler, type checker, and LSP, all in Rust. This is a project I've had agents working on for 5 months now. I burned ~$400k of Codex tokens and got nowhere. Burned ~$20k of Opus and got there in 2 weeks. I have not read a single line of the code. tsc-rs is an open source drop-in replacement for tsc, and it's available now.