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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.
Hi Steve,
In your console.log, you forgot to add quotations to make it a string input.
Since we are using Regex expressions, which describe patterns in string data => the input also needs to be in string data for regex to apply.
Your statement: console.log(maskify(1234567890123456)
Should be: console.log(maskify("1234567890123456")
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