svelte-fast-check

svelte-fast-check is a fast type and Svelte compiler warning checker for Svelte/SvelteKit projects, leveraging the TypeScript 7 (tsgo) preview (Go-based, parallel) for up to 24x faster incremental checks compared to svelte-check. Version 0.4.5 (Jan 2025) adds Windows support and fixes Node.js glob compatibility. Requires Node.js 22+ or Bun, Svelte 5+, and TypeScript 5+. Key differentiators: uses tsgo for faster incremental type checking, supports Svelte compiler warnings (unused CSS, a11y), reads warningFilter from svelte.config.js. Not included: CSS language service diagnostics.