From bb98c9afb320df4d0bff875ba89cac1f2c323b95 Mon Sep 17 00:00:00 2001
From: Mike Gerwitz <mikegerwitz@gnu.org>
Date: Mon, 21 Apr 2014 22:22:42 -0400
Subject: [PATCH] Revert "Removed unnecessary try/catch from isInstanceOf"

This reverts commit 58ee52ad4a0ebf51f9add9b99188968268ed6f8e.

As it turns out, IE9 allows use of instanceof with special object types, not
just functions. One such example is HTMLElement; its type is `object', whereas
in Firefox and Chromium it is `function'. There is no reliable way to perform
this detection.

Therefore, the try/catch here is more reliable.
---
 lib/ClassBuilder.js | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/ClassBuilder.js b/lib/ClassBuilder.js
index 74f2dc4..0b760aa 100644
--- a/lib/ClassBuilder.js
+++ b/lib/ClassBuilder.js
@@ -244,14 +244,16 @@ exports.isInstanceOf = function( type, instance )
         return false;
     }
 
-    // check prototype chain (will throw an error if type is not a
-    // constructor (function)
-    if ( ( typeof type === 'function' )
-        && ( instance instanceof type )
-    )
+    try
     {
-        return true;
+        // check prototype chain (will throw an error if type is not a
+        // constructor (function)
+        if ( instance instanceof type )
+        {
+            return true;
+        }
     }
+    catch ( e ) {}
 
     // if no metadata is available, then our remaining checks cannot be
     // performed