From 301647bf1b6da9303b39b3c8c8a88f15eaf1b7b3 Mon Sep 17 00:00:00 2001
From: Boris Serdyuk
Date: Sat, 21 Sep 2013 12:38:09 +0400
Subject: refactor(angular.toJson): use charAt instead of regexp

Provides a performance improvement when serializing to JSON strings.

Closes #4093
---
 src/Angular.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Angular.js b/src/Angular.js
index 8c322460..b438270c 100644
--- a/src/Angular.js
+++ b/src/Angular.js
@@ -758,7 +758,7 @@ function bind(self, fn) {
 function toJsonReplacer(key, value) {
   var val = value;
 
-  if (/^\$+/.test(key)) {
+  if (typeof key === 'string' && key.charAt(0) === '$') {
     val = undefined;
   } else if (isWindow(value)) {
     val = '$WINDOW';
-- 
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