var t,i;function n(){if(i)return t;i=1;var n=function(){this.head=null,this.tail=null};return n.prototype={add:function(t){var i={item:t,next:null},n=this.tail;n?n.next=i:this.head=i,this.tail=i},get:function(){var t=this.head;if(t)return null===(this.head=t.next)&&(this.tail=null),t.item}},t=n}export{n as __require};