Fix.

node_modules/set-value/index.js

@@ -0,0 +1,55 @@
+/*!
+ * set-value <https://github.com/jonschlinkert/set-value>
+ *
+ * Copyright (c) 2014-2015, 2017, Jon Schlinkert.
+ * Released under the MIT License.
+ */
+
+'use strict';
+
+var split = require('split-string');
+var extend = require('extend-shallow');
+var isPlainObject = require('is-plain-object');
+var isObject = require('is-extendable');
+
+module.exports = function(obj, prop, val) {
+  if (!isObject(obj)) {
+    return obj;
+  }
+
+  if (Array.isArray(prop)) {
+    prop = [].concat.apply([], prop).join('.');
+  }
+
+  if (typeof prop !== 'string') {
+    return obj;
+  }
+
+  var keys = split(prop, {sep: '.', brackets: true}).filter(isValidKey);
+  var len = keys.length;
+  var idx = -1;
+  var current = obj;
+
+  while (++idx < len) {
+    var key = keys[idx];
+    if (idx !== len - 1) {
+      if (!isObject(current[key])) {
+        current[key] = {};
+      }
+      current = current[key];
+      continue;
+    }
+
+    if (isPlainObject(current[key]) && isPlainObject(val)) {
+      current[key] = extend({}, current[key], val);
+    } else {
+      current[key] = val;
+    }
+  }
+
+  return obj;
+};
+
+function isValidKey(key) {
+  return key !== '__proto__' && key !== 'constructor' && key !== 'prototype';
+}