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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.
Tests break on Node 12.x and above:
consider this one as a very strong suggestion:
in the sample tests, you should show the strings using multiline ones. This way the expecte'd result is immediatly visible from the user.
=> you have to be pretty clear about that
Duplicate
The task is not explained at all.