From 82c7aca14203730d5259007dc6f7d644c039efb7 Mon Sep 17 00:00:00 2001
From: petehunt <floydophone@gmail.com>
Date: Mon, 10 Mar 2014 02:16:15 -0700
Subject: [PATCH] Add optimization to ReactDOMComponent

---
 src/browser/ui/ReactDOMComponent.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/browser/ui/ReactDOMComponent.js b/src/browser/ui/ReactDOMComponent.js
index cbe512a74aa..730db6eede6 100644
--- a/src/browser/ui/ReactDOMComponent.js
+++ b/src/browser/ui/ReactDOMComponent.js
@@ -206,6 +206,13 @@ ReactDOMComponent.Mixin = {
   },
 
   receiveComponent: function(nextComponent, transaction) {
+    if (nextComponent === this) {
+      // Since props and context are immutable after the component is
+      // mounted, we can do a cheap identity compare here to determine
+      // if this is a superfluous reconcile.
+      return;
+    }
+
     assertValidProps(nextComponent.props);
     ReactComponent.Mixin.receiveComponent.call(
       this,