NodeJS 12 sort() working

nodejs12-sort.txt

var existingOrder = [{
    CreatedDate: "2021-07-12T03:49:57.000Z"
  },
  {
    CreatedDate: "2021-07-13T09:25:23.000Z"
  },
  {
    CreatedDate: "2021-07-18T04:52:41.000Z"
  },
  {
    CreatedDate: "2021-07-14T05:27:32.000Z"
  },
  {
    CreatedDate: "2021-07-10T08:18:57.000Z"
  },
  {
    CreatedDate: "2021-07-14T08:19:42.000Z"
  },
  {
    CreatedDate: "2021-07-16T08:37:15.000Z"
  },
]

existingOrder.sort((a, b) => {
  const dateA = new Date(a.CreatedDate);
  const dateB = new Date(b.CreatedDate);
  return dateA > dateB ? -1 : 1;
});
console.log(existingOrder);