var x = new StablePriorityQueue();
x.add(1);
x.add(0);
x.add(5);
x.add(4);
x.add(3);
x.peek(); // should return 0, leaves x unchanged
x.size; // should return 5, leaves x unchanged
while(!x.isEmpty()) {
  console.log(x.poll());
} // will print 0 1 3 4 5
x.trim(); // (optional) optimizes memory usage

var x = new StablePriorityQueue(function(a,b) {return b - a});
x.add(1);
x.add(0);
x.add(5);
x.add(4);
x.add(3);
while(!x.isEmpty()) {
  console.log(x.poll());
} // will print 5 4 3 1 0

var x = new StablePriorityQueue(function(a, b) {
      return a.energy - b.energy;
});
[{ name: 'player', energy: 10},
 { name: 'monster1', energy: 10},
 { name: 'monster2', energy: 10},
 { name: 'monster3', energy: 10}
].forEach(function(o){
      x.add(o);
})
while (!x.isEmpty()) {
    console.log(x.poll());
}
// will output:
//{ name: 'player', energy: 10 }
//{ name: 'monster1', energy: 10 }
//{ name: 'monster2', energy: 10 }
//{ name: 'monster3', energy: 10 }

var StablePriorityQueue = require("stablepriorityqueue");
var b = new StablePriorityQueue();// initially empty
b.add(1);// add the value "1"