How to migrate from Jest to Vitest

This is a short snippet and/or cheat sheet - for full guides, blog posts and lessons on everything frontend testing related please check out the rest of HowToTestFrontend.com.

5 simple steps to migrate from Jest to Vitest

#jest#testing#vitest
  • Install: npm install -D vitest (add @vitest/ui if you want the UI)
  • Rename jest.config.js to vitest.config.ts (and probably ask AI to convert it, ChatGPT or Claude can probably do a good job)
  • Swap jest.*vi.* in your tests (use find/replace)
  • Update import paths if using custom Jest plugin resolvers
  • Run vitest and fix any remaining issues

Most teams complete this in a few hours. Full guide here from Vitest.dev .