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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 never decalre them unless they're needed.
You should, but it's not required. This way a function pollutes the global scope, and that's bad.
wow! Don't you have to declare const or let before the function expression name?