"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isValidDomain = isValidDomain;
/**
 * A simple test to determine if a hostname is a properly-formatted domain name
 *
 * A "valid domain" is defined here: https://url.spec.whatwg.org/#valid-domain
 *
 * Regex was originally sourced from here, then remixed to add punycode support:
 * https://www.oreilly.com/library/view/regular-expressions-cookbook/9781449327453/ch08s15.html
 */
function isValidDomain(hostname) {
    return (
    // Consider localhost valid as well since it's okay wrt Secure Contexts
    hostname === 'localhost' ||
        // Support punycode (ACE) or ascii labels and domains
        /^((xn--[a-z0-9-]+|[a-z0-9]+(-[a-z0-9]+)*)\.)+([a-z]{2,}|xn--[a-z0-9-]+)$/i.test(hostname));
}