From a7fe7ada142b0b7d0ff790b2c9fb9314a553be3c Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Sun, 30 Mar 2014 20:30:03 -0700
Subject: [PATCH] Fixing variable name collisions

---
 es5-shim.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/es5-shim.js b/es5-shim.js
index 69e0c4f7..70e7c1f0 100644
--- a/es5-shim.js
+++ b/es5-shim.js
@@ -680,29 +680,29 @@ if (!Object.keys) {
         },
         isArguments = function isArguments(value) {
             var str = _toString(value);
-            var isArguments = str === '[object Arguments]';
-            if (!isArguments) {
-                isArguments = !Array.isArray(str)
+            var isArgs = str === '[object Arguments]';
+            if (!isArgs) {
+                isArgs = !Array.isArray(str)
                 && value !== null
                 && typeof value === 'object'
                 && typeof value.length === 'number'
                 && value.length >= 0
                 && isFunction(value.callee);
             }
-            return isArguments;
+            return isArgs;
         };
 
     Object.keys = function keys(object) {
-        var isFunction = isFunction(object),
-            isArguments = isArguments(object),
+        var isFn = isFunction(object),
+            isArgs = isArguments(object),
             isObject = object !== null && typeof object === 'object';
 
-        if (!isObject && !isFunction) {
+        if (!isObject && !isFn) {
             throw new TypeError("Object.keys called on a non-object");
         }
 
         var keys = [],
-            skipProto = hasProtoEnumBug && isFunction;
+            skipProto = hasProtoEnumBug && isFn;
         for (var name in object) {
             if (!(skipProto && name === 'prototype') && owns(object, name)) {
                 keys.push(name);