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diff --git a/node_modules/fbjs/lib/keyMirrorRecursive.js.flow b/node_modules/fbjs/lib/keyMirrorRecursive.js.flow
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+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule keyMirrorRecursive
+ * @flow weak
+ * @typechecks
+ */
+
+'use strict';
+
+var invariant = require('./invariant');
+
+/**
+ * Constructs an enumeration with keys equal to their value. If the value is an
+ * object, the method is run recursively, including the parent key as a suffix.
+ * An optional prefix can be provided that will be prepended to each value.
+ *
+ * For example:
+ *
+ *   var ACTIONS = keyMirror({FOO: null, BAR: { BAZ: null, BOZ: null }}});
+ *   ACTIONS.BAR.BAZ = 'BAR.BAZ';
+ *
+ *   Input:  {key1: null, key2: { nested1: null, nested2: null }}}
+ *   Output: {key1: key1, key2: { nested1: nested1, nested2: nested2 }}}
+ *
+ *   var CONSTANTS = keyMirror({FOO: {BAR: null}}, 'NameSpace');
+ *   console.log(CONSTANTS.FOO.BAR); // NameSpace.FOO.BAR
+ */
+function keyMirrorRecursive<T>(obj: T, prefix?: ?string): T {
+  return keyMirrorRecursiveInternal(obj, prefix);
+}
+
+function keyMirrorRecursiveInternal(
+/*object*/obj,
+/*?string*/prefix) /*object*/{
+  var ret = {};
+  var key;
+
+  invariant(isObject(obj), 'keyMirrorRecursive(...): Argument must be an object.');
+
+  for (key in obj) {
+    if (!obj.hasOwnProperty(key)) {
+      continue;
+    }
+
+    var val = obj[key];
+
+    var newPrefix = prefix ? prefix + '.' + key : key;
+
+    if (isObject(val)) {
+      val = keyMirrorRecursiveInternal(val, newPrefix);
+    } else {
+      val = newPrefix;
+    }
+
+    ret[key] = val;
+  }
+  return ret;
+}
+
+function isObject(obj) /*boolean*/{
+  return obj instanceof Object && !Array.isArray(obj);
+}
+
+module.exports = keyMirrorRecursive;
+\ No newline at end of file