Should You Leave Jest for Vitest? 2.0s vs 1.3s
Jest 30.5.2 vs Vitest 5.0.3 on 40 files / 200 Node tests: wall medians Jest 2027 ms, Vitest isolate-on 2422 ms, Vitest --no-isolate 1287 ms, Jest --runInBand 3346 ms. Both 200/200 pass. Leave Jest after measuring isolate; default isolate can lose.
5 Oct 20265 min read