A quick and simple way to order an array of objects that have a moment.js date property, using Lodash!

lodash-sort-by-moment.ts

import * as _ from 'lodash';
...

/* 
 * Group them by the formatted date below. 
 * The more specific this format is, the smaller the groups will become.
 */ 
private groupMessagesByDate(messages) {
  return _(messages)
    .groupBy((m: any) => m.date.format('MM/DD/YYYY'))
    .map((value, key) => ({date: key, messages: value})) // Map them out
    .value();
}

...