[API reference](https://evolu.dev/docs/api-reference) › [@evolu/react-native](https://evolu.dev/docs/api-reference/react-native) › [web](https://evolu.dev/docs/api-reference/react-native/web) › useIsSsr

```ts
const useIsSsr: () => boolean;
```

Defined in: react/dist/src/local-first/useIsSsr.d.ts:6

Avoiding hydration mismatches.

## See

https://kurtextrem.de/posts/react-uses-hydration