From 6a5a7f37b285ea2ce5058e84eb4664ccfbad5938 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samy=20Pess=C3=A9?= <samypesse@gmail.com>
Date: Thu, 27 Oct 2016 10:17:08 +0200
Subject: [PATCH] Add warning log when references are different in
 shouldComponentUpdate(Fix #373)

---
 src/components/node.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/components/node.js b/src/components/node.js
index fd1edde1b..0b1f987b4 100644
--- a/src/components/node.js
+++ b/src/components/node.js
@@ -1,4 +1,5 @@
 
+import Immutable from 'immutable'
 import Base64 from '../serializers/base-64'
 import Debug from 'debug'
 import React from 'react'
@@ -7,6 +8,7 @@ import TYPES from '../constants/types'
 import Leaf from './leaf'
 import Void from './void'
 import scrollTo from '../utils/scroll-to'
+import warning from '../utils/warning'
 
 /**
  * Debug.
@@ -97,7 +99,10 @@ class Node extends React.Component {
     }
 
     // If the node has changed, update.
-    if (props.node != this.props.node) {
+    if (Immutable.is(props.node, this.props.node)) {
+      if (props.node != this.props.node) {
+          warning('Encountered different references for identical node values in "shouldComponentUpdate". Check that you are preserving references')
+      }
       return true
     }