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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.
For node.js, flatMap is only available from v11. The JS version of the Kata has node v10 as the newest version.
Does any body has a clue why flatMap is not working??
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