What are some common mistakes when using useContext in React?

What are some common mistakes when using useContext in React?

Some common mistakes include not wrapping components in the Provider, using useContext outside of a functional component, and not memoizing context values.

Can you explain why wrapping components in the Provider is important?

Wrapping components in the Provider is crucial because it allows those components to access the context values. Without it, they won't receive any data from the context.

What happens if I use useContext outside of a functional component?

Using useContext outside of a functional component will result in an error because hooks can only be called at the top level of a functional component.

How can I optimize context values to avoid unnecessary re-renders?

You can optimize context values by memoizing them using React's useMemo hook, which prevents re-renders when the context value hasn't changed.

Are there any performance issues I should be aware of with useContext?

Yes, if the context value changes frequently, it can lead to performance issues as all components consuming that context will re-render. It's best to keep context values stable.