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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.
In the JS version i tried to use Array.find() from the ES6 standard, but this doesn't work though it should be supported.
+1 to this, since the Java version has no Test case and no clear specification, it is totally unclear what to look for. I expected a syntax error at first.
The Java test cases didn't work for me as well. My solution got accepted though.