From 7f59e4089a80f3d086ba81846d40fed9c4871189 Mon Sep 17 00:00:00 2001
From: Justin Ridgewell <justin@ridgewell.name>
Date: Sat, 16 May 2015 20:14:04 -0400
Subject: [PATCH] Optimize _.isEqual for primatives

https://github.com/jashkenas/backbone/pull/3605#issuecomment-102657781
---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 1efa346b5..cc1aaf450 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1203,7 +1203,7 @@
 
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
-    return eq(a, b);
+    return a === a && a !== 0 && typeof a !== 'object' && typeof b !== 'object' ? a === b : eq(a, b);
   };
 
   // Is a given array, string, or object empty?