From 1d2beb514713f49840491bc94f42f07f8623b89e Mon Sep 17 00:00:00 2001
From: Sapphire <582087790@qq.com>
Date: Thu, 21 Jun 2018 14:36:29 +0800
Subject: [PATCH] Update Sortable.js

---
 Sortable.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Sortable.js b/Sortable.js
index 8b32dfb..802ab38 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -495,7 +495,8 @@
 		},
 
 		_triggerDragStart: function (/** Event */evt, /** Touch */touch) {
-			touch = touch || (evt.pointerType == 'touch' ? evt : null);
+			var touchType = evt && (evt.pointerType == 'touch' || evt.type == 'pointerDown' || evt.type == 'pointerdown')
+			touch = touch || (touchType ? evt : null);
 
 			if (touch) {
 				// Touch device support