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