Building a Custom Hook
In this lesson, you'll learn how to create a custom hook!
We'll cover the following
Introduction
Before we go into the other advanced patterns, it’s important to understand the default way to share functionality with hooks — building a custom hook.
Only by building on this foundation can we take advantage of the other advanced patterns we will discuss.
So far, we’ve built a compound component that works great! Let’s say you were the author of some open-source library, and you wanted to expose the “expand” functionality via a custom hook, how would you do this?
First, let’s agree on the name of your open-source (OS) library. We’ll leave it as Expandable
— same as before.
Now, instead of having the logic for managing the expanded
state in an Expandable
component that returns a Provider
, we can just export 2 custom hooks.
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