Don't use domain-regex

It's broken, it doesn't match what you think it will match.

lib/alias.js

@@ -2,11 +2,10 @@ import Now from './';
 import toHost from './to-host';
 import chalk from 'chalk';
 import isZeitWorld from './is-zeit-world';
-import _domainRegex from 'domain-regex';
 import { DOMAIN_VERIFICATION_ERROR } from './errors';
 import { resolve4 } from './dns';
 
-const domainRegex = _domainRegex();
+const domainRegex = /^((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}$/;
 
 export default class Alias extends Now {
 

lib/domains.js

@@ -1,10 +1,9 @@
 import Now from '../lib';
 import isZeitWorld from './is-zeit-world';
-import _domainRegex from 'domain-regex';
 import chalk from 'chalk';
 import { DNS_VERIFICATION_ERROR } from './errors';
 
-const domainRegex = _domainRegex();
+const domainRegex = /^((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}$/;
 
 export default class Domains extends Now {
 

package.json

@@ -63,7 +63,6 @@
     "copy-paste": "1.3.0",
     "cross-spawn-async": "2.2.4",
     "docker-file-parser": "0.1.0",
-    "domain-regex": "0.0.1",
     "email-prompt": "0.1.8",
     "email-validator": "1.0.4",
     "fs-promise": "0.5.0",