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CloudflareDeveloper tools · 6 min

Cloudflare and partners port Microsoft's TypeScript compiler to Rust

Developers wait a long time for TypeScript to check their code, and the compiler uses a lot of memory. That makes it hard to run full development setups in small places such as a browser.

tsrs, a faithful Rust port of the TypeScript compiler, built with the TypeScript team, not a fork. Rust compiles well to WebAssembly, so it can run in browsers and sandboxes.

up to 8xfaster than TypeScript 7.0, with about 70% less memory
Oct 20, 2026Read the post