I built a 30x faster svelte-check in 2 days with AI

Show HN: I built a 30x faster svelte-check in 2 days with AI

I built a 30x faster svelte-check in 2 days with AI operates in show hn launch.

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I built a Rust drop-in replacement for svelte-check that's 10-30x faster for Svelte 5 projects.What it does:- Parses Svelte files with a custom Rust parser - Transforms them to TSX in parallel using Rayon - Runs type-checking via Microsoft's tsgo (the native Go port of TypeScript) - Maps errors back to original .svelte locations via source mapsWhy it's fast:The official svelte-check uses TypeScript's Language Service API optimized for IDEs with persistent connections. Great for autocomplete but slow for batch CLI checks.svelte-check-rs writes real TSX files to disk and runs tsgo as a standalone compiler. This enables incremental builds with persistent .tsbuildinfo, so subsequent runs only re

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Website: svelte-check-rs.vercel.app