if (typeof Object.assign != 'function') {

(function () {
  Object.assign = function (target) {
    'use strict';
    if (target === undefined || target === null) {
      throw new TypeError('Cannot convert undefined or null to object');
    }

    var output = Object(target);
    for (var index = 1; index < arguments.length; index++) {
      var source = arguments[index];
      if (source !== undefined && source !== null) {
        for (var nextKey in source) {
          if (Object.prototype.hasOwnProperty.call(source, nextKey)) {
            output[nextKey] = source[nextKey];
          }
        }
      }
    }
    return output;
  };
})();

}