--- /dev/null
+/*!
+ * is-extglob <https://github.com/jonschlinkert/is-extglob>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+module.exports = function isExtglob(str) {
+ return typeof str === 'string'
+ && /[@?!+*]\(/.test(str);
+};