Fix.

node_modules/is-descriptor/index.js

@@ -1,22 +0,0 @@
-/*!
- * is-descriptor <https://github.com/jonschlinkert/is-descriptor>
- *
- * Copyright (c) 2015-2017, Jon Schlinkert.
- * Released under the MIT License.
- */
-
-'use strict';
-
-var typeOf = require('kind-of');
-var isAccessor = require('is-accessor-descriptor');
-var isData = require('is-data-descriptor');
-
-module.exports = function isDescriptor(obj, key) {
-  if (typeOf(obj) !== 'object') {
-    return false;
-  }
-  if ('get' in obj) {
-    return isAccessor(obj, key);
-  }
-  return isData(obj, key);
-};