rsnext/errors/client-flush-effects.md

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# `useFlushEffects` can not be called on the client
#### Why This Error Occurred
The `useFlushEffects` hook was executed while rendering a component on the client, or in another unsupported environment.
#### Possible Ways to Fix It
The `useFlushEffects` hook can only be called while _server rendering a client component_. As a best practice, we recommend creating a wrapper hook:
```jsx
// lib/use-style-libraries.js
import { useFlushEffects } from 'next/streaming'
export default function useStyleLibraries() {
if (typeof window === 'undefined') {
// eslint-disable-next-line react-hooks/rules-of-hooks
useFlushEffects([
/* ... */
])
}
/* ... */
}
```