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.
PRESET_COLORSis a predefined map as the instructions say, it's not a part of JS core, it's a const/var defined for this kata.Please when you report a problem, paste the error message you see, and when you need help with your code (as it seems to be the case), we need to see it too. Don't forget to mark your post as having spoiler content if you do paste it here.
No problem with the kata.