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    Convert a callback to a promise


    Promises are rapidly overtaking callbacks in popularity. In this lesson, I show you how to rewrite a callback using ES6 Promises. After getting a handle on the basics, we'll convert an error-first style callback to use the Resolve and Reject handlers built into Promises. If you aren't familiar with Promises, this lesson can be a great starting point by learning how to duplicate the behavior of a callback with ES6 Promises.