All files / app/hooks use-navigator-online.ts

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import { useEffect, useState } from 'react';
 
const state = {
  whenOnline: 'online',
  whenOffline: 'offline',
};
 
interface UseNavigatorOnlineArgs {
  onReconnect?(): void;
  onDisconnect?(): void;
}
 
// Credit to https://github.com/oieduardorabelo/use-navigator-online
export function useNavigatorOnline({ onReconnect, onDisconnect }: UseNavigatorOnlineArgs = {}) {
  const [value, setValue] = useState(window.navigator.onLine);
 
  useEffect(() => {
    function handleOnlineStatus() {
      const newState = window.navigator.onLine;
      setValue(newState);
      Iif (newState) onReconnect?.();
      Iif (!newState) onDisconnect?.();
    }
 
    window.addEventListener('online', handleOnlineStatus);
    window.addEventListener('offline', handleOnlineStatus);
 
    return () => {
      window.removeEventListener('online', handleOnlineStatus);
      window.removeEventListener('offline', handleOnlineStatus);
    };
  }, [onDisconnect, onReconnect]);
 
  const isOnline = value === true;
  const isOffline = value === false;
  const status = isOnline ? state.whenOnline : state.whenOffline;
 
  return { status, isOnline, isOffline };
}