[lewispollard]

The way hooks are handled when invoked in functional components is magic, as all stateful things in react are, but hooks themselves are very straightforward. Once you've written a custom hook, it's obvious that they're basically just (yes, this is an oversimplification) react components without the render step. You use the React API just like any other component, including using hooks, and then return some piece of state or whatever is needed. Like functional components, they're just functions that run top to bottom when the props change.