useMounted

API

import useMounted from '@restart/hooks/useMounted'

useMounted() => () => boolean
Track whether a component is current mounted. Generally less preferable than properlly canceling effects so they don't run after a component is unmounted, but helpful in cases where that isn't feasible, such as a Promise resolution.
Return Value () => boolean
a function that returns the current isMounted state of the component
```
const [data, setData] = useState(null)
const isMounted = useMounted()
useEffect(() => {
  fetchdata().then((newData) => {
     if (isMounted()) {
       setData(newData);
     }
  })
})
```