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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.
I need some help, I've made the challenge with Javascript, but I have no chance to submit because of this("Random tests"):
TypeError: board[x].map is not a function
at randomBoard
at /home/codewarrior/index.js:224:10
at /runner/frameworks/javascript/cw-2.js:152:11
at Promise._execute
at Promise._resolveFromExecutor
at new Promise
at describe
at /home/codewarrior/index.js:144:1
at /home/codewarrior/index.js:248:5
at Object.handleError