unknown

svelte-fast-check is an experimental type and compiler warning checker for Svelte/SvelteKit projects that achieves up to 24x faster performance than svelte-check. It leverages TypeScript 7 (tsgo), a Go-based TypeScript compiler that supports incremental builds and parallel processing, while maintaining compatibility by using the same svelte2tsx and Svelte compiler. The tool runs type checking and compiler warnings in parallel, with incremental mode caching unchanged files. Benchmarks show 5.5x speedup in basic mode and 24x in warm incremental mode on a 282-file project. Requires Node.js 22+ or Bun, works with Svelte 5+ and TypeScript 5+.

astralhpi/svelte-fast-check

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