import {useState,useEffect} from 'react'

 const useNetworkStatus=()=> {

    const [isOnline, setIsOnline] = useState(navigator.onLine);

    useEffect(() => {
      window.addEventListener('online', () => {
        setIsOnline(navigator.onLine);
      });
      window.addEventListener('offline', () => {
        setIsOnline(navigator.onLine);
      });

      return ()=>{
        window.removeEventListener("online", setIsOnline);
        window.removeEventListener("offline", setIsOnline);
      }
    });

    return isOnline;
  }

  export default useNetworkStatus

import React from 'react';
import { useNetworkStatus } from 'share/hooks';

function Index() {
  const isOnlie = useNetworkStatus();
  return <div>Index</div>;
}

export default Index;