Loading collection data...
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.
because .match returns a null when theres no match, that's why you get errors like .map undefined
Can anyone explain to my why this is number one solution when it's not passing all tests?