Zed on X: “Delta and Zed are now written in Rust. They used to be, too, but they …”

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Zed on X: “Delta and Zed are now written in Rust. They used to be, too, but they …” | PeekX

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Delta and Zed are now written in Rust. They used to be, too, but they still are.

Theo - t3.gg@theo · Oct 7

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

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Oct 9, 2026, 7:31 PM UTC

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