alt.hn

5/27/2026 at 7:35:03 PM

tsz: high performance TypeScript checker, emitter, and language service in Rust

https://tsz.dev/

by bpierre

5/28/2026 at 11:15:47 AM

I ran into this earlier, the commit history is the one maintainer and Claude pumping out like hundreds of commits 24 hours a day. Aside from the token cost, I’m wondering how this will turn out relative to the official tsgo native push.

by presentation

5/28/2026 at 6:32:28 PM

Yeah not surprising. But if uses the TS test suite and compares output with tsc byte for byte, then an AI banging its head against the wall for a week should get there eventually.

by rjh29

5/29/2026 at 11:55:14 AM

I think it’s been banging it’s head against the wall for many months now lol

by presentation

5/28/2026 at 2:55:26 AM

how does it compare to tsx ? https://github.com/privatenumber/tsx

by vivzkestrel

5/28/2026 at 6:34:45 AM

It seems like tsx is a wrapper around tsc for easy compile+run workflow.

tsz seems to be a compiler, a replacement for tsc

by aerzen

5/28/2026 at 10:26:11 AM

Seems like tsx is a wrapper around esbuild, not tsc.

by SahAssar

5/28/2026 at 2:53:38 AM

This seems cool. Like bun for tsc

by rwalls