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# `useObservable`
React state hook that tracks the latest value of an `Observable`.
## Usage
```jsx
import {useObservable} from 'react-use';
const counter$ = new BehaviorSubject(0);
const Demo = () => {
const value = useObservable(counter$, 0);
return (
<button onClick={() => counter$.next(value + 1)}>
Clicked {value} times
</button>
);
};
```
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