How to use

hasOwnProperty

function

in

Dictionary

if (submittedMap.hasOwnProperty(templateProperty.id)) {
  templateProperty.data = submittedMap[templateProperty.id].data;

function groupByParents(array, options) {
 var arrayByID = keyBy(array, options.customID);

 return array.reduce(function(prev, item) {
  var parentID = property.get(item, options.parentProperty);
  if (!parentID || !arrayByID.hasOwnProperty(parentID)) {
   parentID = options.rootID;
  }

  if (parentID && prev.hasOwnProperty(parentID)) {
   prev[parentID].push(item);
   return prev;
  }

  prev[parentID] = [item];
  return prev;
 }, {});
}