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# `useMount`
React lifecycle hook that calls a function after the component is mounted. Use `useLifecycles` if you need both a mount and unmount function.
## Usage
```jsx
import {useMount} from 'react-use';
const Demo = () => {
useMount(() => alert('MOUNTED'));
return null;
};
```
## Reference
```ts
useMount(fn: () => void);
```
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