#assertions

A dark code editor style panel titled vitest.config.ts - toThrow matcher change, contrasting Vitest 4's empty-message-only match against Vitest 5's match-any-error behavior with the fix below it

Fix Vitest 5 toThrow('') Silently Passing Tests

Vitest 5 changes toThrow('') to match any thrown error, not just an empty message. Fix the silent false-pass with toThrow(/^$/) or toThrow().

Aug 13, 2026Read more →