From f95747b929d50227fe3fdf2a999b8fecc18cd21f Mon Sep 17 00:00:00 2001
From: David Greenspan <dgreenspan@alum.mit.edu>
Date: Thu, 24 Sep 2015 05:43:59 -0700
Subject: [PATCH] Remove dependence on ES5 shams per #4189

Docs not updated
---
 src/isomorphic/classic/element/ReactElement.js             | 6 ++++--
 src/renderers/dom/ReactDOM.js                              | 6 +-----
 src/renderers/dom/client/syntheticEvents/SyntheticEvent.js | 5 ++++-
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/isomorphic/classic/element/ReactElement.js b/src/isomorphic/classic/element/ReactElement.js
index 39db3d2a6b755..bad91e5030c5c 100644
--- a/src/isomorphic/classic/element/ReactElement.js
+++ b/src/isomorphic/classic/element/ReactElement.js
@@ -109,8 +109,10 @@ var ReactElement = function(type, key, ref, self, source, owner, props) {
       element._self = self;
       element._source = source;
     }
-    Object.freeze(element.props);
-    Object.freeze(element);
+    if (Object.freeze) {
+      Object.freeze(element.props);
+      Object.freeze(element);
+    }
   }
 
   return element;
diff --git a/src/renderers/dom/ReactDOM.js b/src/renderers/dom/ReactDOM.js
index f8e030c8446af..f9c8e7f76dd76 100644
--- a/src/renderers/dom/ReactDOM.js
+++ b/src/renderers/dom/ReactDOM.js
@@ -98,16 +98,12 @@ if (__DEV__) {
       Object.keys,
       String.prototype.split,
       String.prototype.trim,
-
-      // shams
-      Object.create,
-      Object.freeze,
     ];
 
     for (var i = 0; i < expectedFeatures.length; i++) {
       if (!expectedFeatures[i]) {
         console.error(
-          'One or more ES5 shim/shams expected by React are not available: ' +
+          'One or more ES5 shims expected by React are not available: ' +
           'https://fb.me/react-warning-polyfills'
         );
         break;
diff --git a/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js b/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
index 71d018004bd03..ac111803e0686 100644
--- a/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
+++ b/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
@@ -175,7 +175,10 @@ SyntheticEvent.Interface = EventInterface;
 SyntheticEvent.augmentClass = function(Class, Interface) {
   var Super = this;
 
-  var prototype = Object.create(Super.prototype);
+  var E = function () {};
+  E.prototype = Super.prototype;
+  var prototype = new E();
+
   assign(prototype, Class.prototype);
   Class.prototype = prototype;
   Class.prototype.constructor = Class;