import { isDefined } from './isDefined';

export const isDomain = (url: string | undefined | null) =>
  isDefined(url) &&
  /^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,1}\.(xn--)?([a-z0-9-]{1,61}|[a-z0-9-]{1,30}\.[a-z]{2,})$/.test(
    url,
  );