React 19 Hooks: What's New and How to Use Them Effectively

React 19 introduces four new built-in hooks — use(), useActionState, useFormStatus, and useOptimistic — that simplify asynchronous data handling, form state management, and optimistic UI updates. The use() hook breaks traditional hook rules by allowing conditional calls and integrates with Suspense, while useActionState and useFormStatus streamline form submission workflows previously requiring third-party libraries.