Using React 19 with Vite and Next.js

Learn about the latest features of React 19, like client and server actions, `useOptimistic`, and more. In this demo, we'll start with a client-only React application using Vite and walk through how React 19 simplifies your application logic and helps create a better UX. Then, we'll move to a server framework like Next.js to show how to use React Server Components, Server Actions, and more.