pivot() date sorting

https://github.com/nicolaskruchten/pivottable

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/pivottable/2.13.0/pivot.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/pivottable/2.13.0/pivot.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.19.1/moment.min.js"></script>
<div id="output"></div>

CSS

body {
  font-family: Verdana;
}

JavaScript

$("#output").pivot(
  [
  ["date","color"],
  ["15-12-17", "blue"],
  ["15-12-17", "red"],
  ["13-12-17", "blue"],
  ["16-12-17", "blue"],
  ["15-11-17", "red"],
  ["15-12-16", "yellow"],
  ["14-12-16", "yellow"]
  ], 
  {
    rows: ["date"],
    cols: ["color"],
    sorters:{
    	"date": function(a,b){
      	return moment(b, "DD-MM-YY").diff(moment(a, "DD-MM-YY"));
      }
    }
  });