| /*! | |
|  * is-extglob <https://github.com/jonschlinkert/is-extglob> | |
|  * | |
|  * Copyright (c) 2014-2016, Jon Schlinkert. | |
|  * Licensed under the MIT License. | |
|  */ | |
| 
 | |
| module.exports = function isExtglob(str) { | |
|   if (typeof str !== 'string' || str === '') { | |
|     return false; | |
|   } | |
| 
 | |
|   var match; | |
|   while ((match = /(\\).|([@?!+*]\(.*\))/g.exec(str))) { | |
|     if (match[2]) return true; | |
|     str = str.slice(match.index + match[0].length); | |
|   } | |
| 
 | |
|   return false; | |
| };
 |