vitest-fail-on-console: Stop Ignoring console.error in Your Tests

Originally published at recca0120.github.io All tests pass, but the terminal is full of red console.error output. This is common and easy to ignore — the tests passed, after all. But those errors don't appear out of nowhere. Something went wrong; nobody just noticed. vitest-fail-on-console does one thing: if console.error or console.warn appears during a test, that test fails. It forces you to acknowledge these messages instead of letting them drown in noise. Why console.error in Tests Is a Code