Managing loading states declaratively for async operations.
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suspenseasyncperformance
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Suspense with a lazy component
import { lazy, Suspense } from "react";
// the chunk for Heavy loads on demand; Suspense shows the fallback meanwhile
const Heavy = lazy(() => import("./Heavy.js"));
export default function App() {
return (
<div style={{ padding: 24, fontFamily: "system-ui" }}>
<Suspense fallback={<p>Loading…</p>}>
<Heavy />
</Suspense>
</div>
);
}05
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