| 'use strict'; | |
| 
 | |
| module.exports = function prepend(value, key) { | |
|   if (key !== undefined) { | |
|     return this.put(key, value); | |
|   } | |
| 
 | |
|   this.items.unshift(value); | |
| 
 | |
|   return this; | |
| };
 |