Metric/SI linear and area units about leaflet-measure HOT 7 CLOSED

var measure = function (latlngs) {
  var last = _.last(latlngs);
  var path = geocrunch.path(_.map(latlngs, function (latlng) {
    return [latlng.lng, latlng.lat];
  }));
  return {
    lastCoord: {
      dd: {
        x: last.lng,
        y: last.lat
      },
      dms: {
        x: ddToDms(last.lng, 'E', 'W'),
        y: ddToDms(last.lat, 'N', 'S')
      }
    },
    length: {
      feet: path.distance({
        units: 'feet'
      }),
      miles: path.distance({
        units: 'miles'
      }),
      meters: path.distance({
        units: 'meters'
      }),
      kilometers: path.distance({
        units: 'kilometers'
      })
    },
    area: {
      acres: path.area({
        units: 'acres'
      }),
      sqmeters: path.area({
        units: 'sqmeters'
      })      
    }
  };
};

var controlTemplate = _.template("<a class=\"<%= model.className %>-toggle js-toggle\" href=\"#\" title=\"Measure distances and areas\">Measure</a>\n<div class=\"<%= model.className %>-interaction js-interaction\">\n  <div class=\"js-startprompt startprompt\">\n    <h3>Measure Distances and Areas</h3>\n    <ul class=\"tasks\">\n      <a href=\"#\" class=\"js-start start\">Create a new measurement</a>\n    </ul>\n  </div>\n  <div class=\"js-measuringprompt\">\n    <h3>Measure Distances and Areas</h3>\n    <p class=\"js-starthelp\">Start creating a measurement by adding points to the map</h3>\n    <div class=\"js-results results\"></div>\n    <ul class=\"js-measuretasks tasks\">\n      <li><a href=\"#\" class=\"js-cancel cancel\">Cancel</a></li>\n      <li><a href=\"#\" class=\"js-finish finish\">Finish Measurement</a></li>\n    </ul>\n  </div>\n</div>");
var resultsTemplate = _.template("<div class=\"group\">\n<p class=\"lastpoint heading\">Last Point</p>\n<p><%= model.lastCoord.dms.y %> <span class=\"coorddivider\">/</span> <%= model.lastCoord.dms.x %></p>\n<p><%= humanize.numberFormat(model.lastCoord.dd.y, 6) %> <span class=\"coorddivider\">/</span> <%= humanize.numberFormat(model.lastCoord.dd.x, 6) %></p>\n</div>\n<% if (model.pointCount > 1) { %>\n<div class=\"group\">\n<p><span class=\"heading\">Path Distance</span> <%= humanize.numberFormat(model.length.meters, 0) %> Meters (<%= humanize.numberFormat(model.length.kilometers, 2) %> Kilometers)</p>\n</div>\n<% } %>\n<% if (model.pointCount > 2) { %>\n<div class=\"group\">\n<p><span class=\"heading\">Area</span> <%= humanize.numberFormat(model.area.acres, 2) %> Acres</p>\n</div>\n<% } %>");
var pointPopupTemplate = _.template("<h3>Point Location</h3>\n<p><%= model.lastCoord.dms.y %> <span class=\"coorddivider\">/</span> <%= model.lastCoord.dms.x %></p>\n<p><%= humanize.numberFormat(model.lastCoord.dd.y, 6) %> <span class=\"coorddivider\">/</span> <%= humanize.numberFormat(model.lastCoord.dd.x, 6) %></p>\n<ul class=\"tasks\">\n  <li><a href=\"#\" class=\"js-zoomto zoomto\">Center on this Location</a></li>\n  <li><a href=\"#\" class=\"js-deletemarkup deletemarkup\">Delete</a></li>\n</ul>");
var linePopupTemplate = _.template("<h3>Linear Measurement</h3>\n<p><%= humanize.numberFormat(model.length.meters, 0) %> Meters</p>\n<p><%= humanize.numberFormat(model.length.kilometers, 2) %> Kilometers</p>\n<ul class=\"tasks\">\n  <li><a href=\"#\" class=\"js-zoomto zoomto\">Center on this Line</a></li>\n  <li><a href=\"#\" class=\"js-deletemarkup deletemarkup\">Delete</a></li>\n</ul>");
var areaPopupTemplate = _.template("<h3>Area Measurement</h3>\n<p><%= humanize.numberFormat(model.area.acres, 2) %> Acres</p>\n<p><%= humanize.numberFormat(model.length.meters, 0) %> meters (<%= humanize.numberFormat(model.length.kilometers, 2) %> Kilometers) Perimeter</p>\n<ul class=\"tasks\">\n  <li><a href=\"#\" class=\"js-zoomto zoomto\">Center on this Area</a></li>\n  <li><a href=\"#\" class=\"js-deletemarkup deletemarkup\">Delete</a></li>\n</ul>");

var measureControl = L.control.measure({
position: 'bottomright', 
activeColor: '#0004FC', 
completedColor: '#0004FC'
lengthUnit: 'meters',
lengthUnit2: 'kilometers',
areaUnit: 'acres'
areaUnit2: 'hectares'
});
measureControl.addTo(map);