code: function baseAssignValue(object, key, value) {
          if (key == "__proto__" && defineProperty) {
              defineProperty(object, key, {
                  configurable: true,
                  enumerable: true,
                  value: value,
                  writable: true
              });
          } else {
              object[key] = value;
          }
      }
docs: The base implementation of `assignValue` and `assignMergeValue` without
  value checks.
  
  @private
  @param {Object} object The object to modify.
  @param {string} key The key of the property to assign.
  @param {*} value The value to assign.