From 6e2b9a1a05031c47065bc442348cf5f2de7734ec Mon Sep 17 00:00:00 2001
From: Nobuyuki Fujioka <n.fujioka@abacusmaths.info>
Date: Fri, 16 Mar 2018 11:53:01 +0000
Subject: [PATCH] fix for nested sortables with react-sortablejs

Could you add this conditional so that I can use nested sortables with react-sortablejs?
https://github.com/cheton/react-sortable/issues/23
---
 Sortable.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Sortable.js b/Sortable.js
index 8b32dfb..36b4dee 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -1338,7 +1338,9 @@
 
 		evt.originalEvent = originalEvt;
 
-		rootEl.dispatchEvent(evt);
+		if(rootEl) {
+		  rootEl.dispatchEvent(evt);
+	        }
 
 		if (options[onName]) {
 			options[onName].call(sortable, evt);