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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
that's great that you're obsessed with solving the kata but NOBODY WANTS YOU YELLING AT THEM LIKE THIS BECAUSE THINGS ARE NOT AS YOU WISH THEY WERE. if you want to see tests on a kata such as this one you are going to have to use console.log() to print the inputs. just because your code is passing the basic tests guarantees nothing, and if a knowledgeable coder can actually see your code and tell you there's a problem, the right thing to do would be say, "Thank you for reviewing my code", and get back to work.
console.log...(wave)
Please, be very attentive because your code has a serious bug!
Revise it once again from the beginning...