An AMD utility module for working with ArcGIS portal items that including helper functions missing from other esri/arcgis classes (addItem, etc)

portalUtils.js

define([
  "dojo/io-query",

  "esri/request",

  "esri/arcgis/utils"
],
function(
  ioQuery,
  esriRequest,
  arcgisUtils
) {
  return {
    // add an item to a portal users's content
    // assumes portal user is already logged in (using identity manager)
    addItem: function (portalUser, content) {
        var requestParams = { f: "json", token: portalUser.credential.token };
        var url = portalUser.portal.portalUrl + "content/users/" + portalUser.username + "/addItem";
        url += "?" + ioQuery.objectToQuery(requestParams);
        return esriRequest({
          url: url,
          content: content
        }, {
          usePost: true
        });
    },
    // get item info and item data
    // wraps arcgisUtils.getItem function to
    // make it more generic for other portals
    getItem: function(portal, itemId) {
      arcgisUtils.arcgisUrl = portal.url + "/sharing/content/items";
      return arcgisUtils.getItem(itemId);
    }
  };
});