Refactor(ES6): Null Factory

lib/NullFactory.js

@@ -2,9 +2,11 @@
 	MIT License http://www.opensource.org/licenses/mit-license.php
 	Author Tobias Koppers @sokra
 */
-function NullFactory() {}
-module.exports = NullFactory;
+"use strict";
 
-NullFactory.prototype.create = function(data, callback) {
-	return callback();
-};
+class NullFactory {
+	create(data, callback) {
+		return callback();
+	}
+}
+module.exports = NullFactory;