Testing custom React hooks ensures your reusable hook logic works correctly and handles edge cases properly. With over 12 years of React development experience since 2014 and as the creator of CoreUI, I’ve written and tested hundreds of custom hooks. React Testing Library provides renderHook utility specifically designed for testing hooks in isolation without needing a component. This approach allows you to test hook logic, state updates, and side effects independently.

Custom hooks in React allow you to extract and reuse stateful logic between components without changing your component hierarchy. As the creator of CoreUI with over 11 years of React development experience, I use custom hooks extensively to share common functionality like data fetching, form validation, and localStorage management across our UI components. Custom hooks are just JavaScript functions that start with “use” and can call other React hooks.

Creating custom hooks allows you to extract and reuse stateful logic between React components. As the creator of CoreUI with over 11 years of React development experience, I build custom hooks extensively to share common functionality across UI components. Custom hooks are JavaScript functions that start with “use” and can call other hooks, making complex logic reusable and testable.