hook to handle back button in ReactNative

useBackButton.js

import React, {useEffect} from 'react';
import {BackHandler} from 'react-native';

const useBackButton = (handler) => {
	useEffect(() => {
		BackHandler.addEventListener("hardwareBackPress", handler);
		return () => {
			BackHandler.removeEventListener(
				"hardwareBackPress",
				handler
			);
		};
	}, [handler]);
};
export default useBackButton;