oxc-project/tsrs
Rust port of the TypeScript 7 type checker
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README & documentation
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[](https://www.npmjs.com/package/tsrs) [](https://github.com/oxc-project/tsrs/blob/main/LICENSE) tsrs is a drop-in replacement for the TypeScript 7 compiler and language server, written in Rust. Our goal is 100% conformance, with much lower memory use and faster type checking. Read the announcement. You can try tsrs today and give us feedback on performance, memory usage, and conformance. Try checking and emitting code in the browser playground. We aim to release a stable version against TypeScript 7.1 with 100% conformance. See compatibility and evidence for supported features and known gaps. Default mode preserves the pinned TypeScript compiler's checker behavior, including known diagnostic differences when checker count or file order changes. This sensitivity is inherited from TypeScript itself. See differences from pinned TypeScript for the remaining runtime differences and unsupported features. The following defaults and opt-in preset are available in 0.20.0 and later. By default, tsrs follows the pinned TypeScript compiler's checker settings: four checkers (capped by file count),…
Read the full README ↗ · Preview checked 2026-10-27T16:28:30.491Z
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What this repository does
Rust port of the TypeScript 7 type checker
Repository facts
- Owner
- oxc-project
- Primary language
- Rust
- Stars
- 2,648
- Forks
- 52
- Open issues + pull requests
- 22
- License
- Apache-2.0
- Archived
- No
- Default branch
- main
- Created
- 2026-10-01T15:14:18.000Z
- Last push
- 2026-10-30T23:39:52.000Z
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