Function useMounted

useMounted(): Readonly<Ref<boolean>>
Tracks the mounted state of a component.

Returns Readonly<Ref<boolean>>
A readonly reference that is false initially and true after the component is mounted.
Example
```
const mounted = useMounted()

  watchEffect(() => {
    if (mounted.value) {
      console.log('Component mounted')
    }
  })
```
- Defined in src/runtime/composables/useMounted.ts:19