What are the uses of the useUnmount function in hooks?

The main purpose of the useUnmount function in React hooks is to perform some cleanup operations when a component is unmounted.

1. Unsubscribe or clear timers: When a component is unmounted, it is necessary to unsubscribe from events or clear timers to prevent memory leaks or invalid operations. By using useUnmount, these cleanup operations can be performed when the component is unmounted.
2. Disconnect or close resources: When using external resources like WebSocket connections or database connections, it is necessary to close these resources when the component is unmounted in order to prevent resource leaks or invalid connections. Using useUnmount allows these closing operations to be executed when the component is unmounted.
3. Cleanup side effects: Side effects refer to operations performed in React components that are unrelated to state, such as sending network requests or manipulating the DOM. Sometimes, these side effects need to be cleaned up when a component is unmounted to prevent invalid operations or memory leaks. By using useUnmount, these cleanup operations can be executed when the component is unmounted.

In short, the main purpose of the useUnmount function is to perform some cleaning operations when the component is unmounted, ensuring that the component’s lifecycle is properly managed and handled.