import { Arbitrary } from './definition/Arbitrary';
/**
 * For domains
 * having an extension with at least two lowercase characters
 *
 * According to {@link https://www.ietf.org/rfc/rfc1034.txt | RFC 1034},
 * {@link https://www.ietf.org/rfc/rfc1123.txt | RFC 1123} and
 * {@link https://url.spec.whatwg.org/ | WHATWG URL Standard}
 *
 * @public
 */
export declare function domain(): Arbitrary<string>;