From 33e04a117329e2acd4cb89931d5f5e160ef2c42b Mon Sep 17 00:00:00 2001
From: Rand Scullard <rand@randscullard.com>
Date: Thu, 7 May 2015 09:25:31 -0400
Subject: [PATCH] fix41: Handle the case where the user is using a mouse on a
 browser that supports touch events, causing touchEvent to be undefined in
 _mouseDown and _mouseMove.

---
 jquery.ui.touch-punch.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/jquery.ui.touch-punch.js b/jquery.ui.touch-punch.js
index 0e26f14..1197f26 100755
--- a/jquery.ui.touch-punch.js
+++ b/jquery.ui.touch-punch.js
@@ -206,7 +206,7 @@
 
     _mouseDown.call(self, event);
 
-    if (event.isDefaultPrevented()) {
+    if (event.isDefaultPrevented() && touchEvent) {
       touchEvent.preventDefault();
       touchStartDefaultPrevented = true;
     }
@@ -223,7 +223,7 @@
 
     _mouseMove.call(self, event);
 
-    if (event.isDefaultPrevented()) {
+    if (event.isDefaultPrevented() && touchEvent) {
       touchEvent.preventDefault();
     }
   };