vitest
Key benefits of Vitest over Jest:
- 2-10x faster test startup (built on Vite and esbuild)
- Native TypeScript support without ts-jest
- Hot Module Replacement for instant re-runs
- Jest-compatible API requiring minimal code changes
- Modern ESM-first architecture
<quick_start> <automated_migration> RECOMMENDED APPROACH: Use automated codemods for fastest migration.
Option 1: vitest-codemod (recommended)
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