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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.
Have you tried to search for documentation online? Just something like "check empty array JavaScript", "check null array JavaScript"?
You're doing it wrong. Try reading the posts below.
P.S.: your current code works.
Apparently, a lot.
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Not an issue ~~ There's this in description too
If the input is an empty array or is null, return an empty array.The description quite literally says "given an array of integers", yet one test gives
nullas the input, which results inTypeError: Cannot read property 'length' of nullwhen correctly assuming that you always get an array (as per description) and merely need to test for its length.You have already decided you have either the sum of the elements or the number of elements. The tests are wrong.
I wonder how many people got it wrong at first because they mis-read the instructions XD.