How do you implement background tasks in React Native?

Question

Accepted Answer

**react-native-background-fetch:**
```tsx
import BackgroundFetch from "react-native-background-fetch";

BackgroundFetch.configure({
  minimumFetchInterval: 15,
  stopOnTerminate: false,
  startOnBoot: true,
}, async (taskId) => {
  console.log("[BackgroundFetch] taskId:", taskId);
  // Perform background work
  await syncData();
  BackgroundFetch.finish(taskId);
}, (taskId) => {
  console.log("[BackgroundFetch] timeout:", taskId);
  BackgroundFetch.finish(taskId);
});
```

**Limitations:**
- iOS: 15-minute minimum interval
- Android: varies by manufacturer
- System may defer or kill tasks

**Use cases:**
- Background sync
- Location updates
- Data prefetching
- Scheduled notifications

React Native: How do you implement background tasks in React Native?