Thank you! I've raised an issue.

Apart from someone shouting when they are sure of the answer, they cannot communicate with each other.

You can just reset the Kata Trainer with the button of the same name to get the new version of kata

(also your solution now passes all tests :D )

Should be fixed now

Yes, I think it's an error in the JS translation. Unfortunately it seems like it was carelessly approved without addressing any of the feedback given to it.

I think that what you're seeing is the result of the actual and expected values being swapped in the assertion messages. The correct message would be "Expected undefined to equal 1", meaning your function returned undefined when it should have returned 1.