AI BriefingCloudflare and VoidZero Launch tsrs, a Rust Port of TypeScript Compiler
·2026.10.20 22:00
Key point
The experimental release is available on npm and incubated within the Oxc JavaScript compiler toolchain.
Details
- Cloudflare and VoidZero, collaborating with Max Schwenk and the TypeScript team, are incubating tsrs, a Rust port of the TypeScript compiler, within the Oxc JavaScript compiler toolchain.
- Early benchmarks show tsrs is up to 8x faster and uses approximately 70% less memory than TypeScript 7.0 when using the same number of type check workers.
- The project aims to enable fully encapsulated development environments in browsers, embedded devices, and IoT applications by leveraging Rust's memory management for WebAssembly, avoiding the need to compile a garbage collector.
- Maintenance involves merging tsrs with tsc-rs into a single package and using AI agents to review upstream changes, fetch diffs, and propose fixes to ensure compatibility with upstream TypeScript.
- The team is not forking TypeScript; the TypeScript team retains full control over language design, and tsrs aims to be a faithful port that contributes performance improvements back to the upstream Go implementation.
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