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function(e){"use strict";var t=function(){this.head=null,this.tail=null};t.prototype={add:function(e){var t={item:e,next:null},n=this.tail;n?n.next=t:this.head=t,this.tail=t},get:function(){var e=this.head;if(e)return null===(this.head=e.next)&&(this.tail=null),e.item}},e.exports=t}