How come the coverage report is not being returned when using the Vitest coverage command?

Is there anyone out there who can assist me with getting coverage reports to work in my Vitest and Typescript project using the command line?

Currently, all I am seeing is a summary of passed and failed tests, but no actual coverage report.

I've already installed "@vitest/-coverage-v8" and I'm running the command "npx vitest run --coverage" in the terminal.

Interestingly, the terminal displays "Coverage enabled with v8", but then it just runs once and stops.

What could I be missing here?

Answer №1

Before anything else, ensure that the version of @vitest/coverage-v8 matches the version of vitest. If you're still not seeing reports, consider enabling tests.coverage.reportOnFailure.

Check out this link for more information. Visit here for details on coverage report settings.

Answer №2

The report will be displayed only if all tests have been successfully completed.

Answer №3

In my situation, I found that the coverage result was not generated when the reporter parameter was left empty. For instance:

test: {
reporters: [
  ['default'],
],
coverage: {
  reporter: [],
  provider: 'istanbul', // or 'v8'
},

},

Therefore, I had to exclude the reporter configuration.

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