From e386fa7674d5678017e39e14bb8a513d45849e8a Mon Sep 17 00:00:00 2001
From: Joffrey JAFFEUX <j.jaffeux@gmail.com>
Date: Thu, 25 Apr 2019 10:36:41 +0200
Subject: [PATCH] FIX: ensures we have touches when starting pan event (#7435)

---
 app/assets/javascripts/discourse/mixins/pan-events.js.es6 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/mixins/pan-events.js.es6 b/app/assets/javascripts/discourse/mixins/pan-events.js.es6
index 423fb1c8a55..2b4dc4dd1e7 100644
--- a/app/assets/javascripts/discourse/mixins/pan-events.js.es6
+++ b/app/assets/javascripts/discourse/mixins/pan-events.js.es6
@@ -24,7 +24,7 @@ export default Ember.Mixin.create({
   addTouchListeners($element) {
     if (this.site.mobileView) {
       $element
-        .on("touchstart", e => this._panStart(e.touches[0]))
+        .on("touchstart", e => e.touches && this._panStart(e.touches[0]))
         .on("touchmove", e => {
           const touchEvent = e.touches[0];
           touchEvent.type = "pointermove";