Suspense

In the previous tutorial, you wrote tests for your React components. Now let’s make your app resilient with Error Boundaries and Suspense. What is an Error Boundary? When a component throws an error during rendering, React normally crashes the entire app. An Error Boundary catches the error and shows a fallback UI instead. Think of it like a try/catch block — but for React components. The Problem Without Error Boundaries function BrokenComponent() { throw new Error("Something went wrong!"); // Crashes the whole app return <div>This never renders</div>; } function App() { return ( <div> <Header /> <BrokenComponent /> {/* Crashes App */} <Footer /> </div> ); } Without an Error Boundary, the error propagates up and the whole page goes blank. ...