Guoba UtilsuseUnmount
@guoba-ai/hook / useUnmount
Function: useUnmount()
function useUnmount(fn): void;Defined in: useUnmount.ts:29
Run a callback when the component unmounts. The latest callback reference is always used, avoiding stale closure issues.
Parameters
fn
() => void
The callback to run on unmount
Returns
void
Example
useUnmount(() => {
console.log('Component unmounted!')
})
function Subscription({ unsubscribe }: { unsubscribe: () => void }) {
useUnmount(unsubscribe)
return null
}
const { rerender, unmount } = renderHook(({ fn }) => useUnmount(fn), {
initialProps: { fn: firstCleanup },
})
rerender({ fn: latestCleanup })
unmount()
// latestCleanup runsWarning
The callback is not called on mount or re-render; it runs when the component unmounts.