As its name suggests, a `Maybe` is a type that may or may not hold a value. In JavaScript, we can use `Maybe`s to check whether a value is undefined or null prior to passing it through to a transformer function and ultimately give us better control over the flow of our In this lesson, we walk through the process of writing a factory function for creating objects that implement a `Maybe` functor. The overall goal of the lesson is to become more comfortable working with the functor data type while learning about `Maybe`, a widely-known implementation in the functional programming world