Vitest 2.0 vs Jest: We Migrated 400 Tests and Here's What Actually Changed
Vitest 2.0 vs Jest: We migrated a 400-test Jest suite last month. Runtime dropped from 47 seconds to 11 seconds. Here is the honest breakdown. Vitest 1.x was already faster than Jest for TypeScript projects because it reuses Vite's transform pipeline instead of running ts-jest or babel-jest. Vitest
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