text: // from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
  if (typeof Object.assign !== 'function') {
      Object.assign = function (target, varArgs) { // .length of function is 2
          'use strict';
          if (target === null) { // TypeError if undefined or null
              throw new TypeError('Cannot convert undefined or null to object');
          }
  
          var to = Object(target);
  
          for (var index = 1; index < arguments.length; index++) {
              var nextSource = arguments[index];
  
              if (nextSource !== null) { // Skip over if undefined or null
                  for (var nextKey in nextSource) {
                      // Avoid bugs when hasOwnProperty is shadowed
                      if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                          to[nextKey] = nextSource[nextKey];
                      }
                  }
              }
          }
          return to;
      };
  }
  