From 2a6d9e0b8e6461064ac1b546e49a540e2e41aacc Mon Sep 17 00:00:00 2001
From: Jason Bedard <jason+github@jbedard.ca>
Date: Tue, 9 Jun 2015 02:39:08 -0700
Subject: [PATCH] perf(copy): avoid regex in isTypedArray

---
 src/Angular.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Angular.js b/src/Angular.js
index 1030e5410521..7719bbb2048f 100644
--- a/src/Angular.js
+++ b/src/Angular.js
@@ -659,9 +659,9 @@ function isPromiseLike(obj) {
 }
 
 
-var TYPED_ARRAY_REGEXP = /^\[object (Uint8(Clamped)?)|(Uint16)|(Uint32)|(Int8)|(Int16)|(Int32)|(Float(32)|(64))Array\]$/;
+var TYPED_ARRAY_REGEXP = /^\[object (?:Uint8|Uint8Clamped|Uint16|Uint32|Int8|Int16|Int32|Float32|Float64)Array\]$/;
 function isTypedArray(value) {
-  return TYPED_ARRAY_REGEXP.test(toString.call(value));
+  return value && isNumber(value.length) && TYPED_ARRAY_REGEXP.test(toString.call(value));
 }