Manage a list of reserved words Mostly used to blacklist reserved subdomains (à la Slack, e.g. http://apple.acme.com or http://wiki.acme.com)
npm install reservify --save
var reservify = require('reservify')();
// Modifiy reserved words or companies.
reservify
.add('slite') // Add a reserved word
.remove('weather') // Remove a reserved word
console.log(reservify.test('wiki')); // true
console.log(reservify.test('apple')); // true
console.log(reservify.test('saucette')); // false