React Suspense & the use() Hook: Complete Guide (2026)

Short summary

React 19's use() hook simplifies Suspense integration for async data fetching by unwrapping Promises inline during render. Critical patterns: create Promises outside components and use stable references to avoid infinite loops; wrap ErrorBoundary outside Suspense for rejection handling; nest multiple Suspense boundaries for progressive loading. Server Components can start fetches before hydration, streaming partial HTML while data loads, and useTransition prevents skeleton flashing during state updates.

• •React 19's use() hook directly integrates Promises with Suspense without libraries
• •Create Promises outside components and pass as stable props to avoid infinite re-render loops
• •Use nested Suspense boundaries with ErrorBoundary (outside Suspense) for progressive loading and error handling

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