/**
 *
 * @returns {boolean} isOnline - indicator if can connect to network
 *
 * The url could be anything, even if manifest.json is not exist in your
 * service, it will probably return 404 or something but it wont throw.
 * Hence, still online.
 */
declare const checkIfOnline: (checkOnlineUrl?: string) => Promise<boolean>;
export default checkIfOnline;