From 4d69a0ce2960647fb7852ae35e885c08effa2980 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Sun, 9 Nov 2014 00:02:00 -0800
Subject: [PATCH] Add comments to `_.isFunction`. [ci skip]

---
 lodash.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lodash.js b/lodash.js
index 948fd1ed3..7d7b968c1 100644
--- a/lodash.js
+++ b/lodash.js
@@ -7377,9 +7377,13 @@
       // https://github.com/jashkenas/underscore/issues/1621
       return typeof value == 'function' || false;
     }
-    // fallback for older versions of Chrome and Safari
+    // fallback for environments that return incorrect `typeof` operator results
     if (isFunction(/x/) || !Uint8Array || !isFunction(Uint8Array)) {
       isFunction = function(value) {
+        // the use of `Object#toString` avoids issues with the `typeof` operator
+        // in older versions of Chrome and Safari which return 'function' for
+        // regexes and modern Safari which returns 'object' for typed array
+        // constructors
         return toString.call(value) == funcClass;
       };
     }