From 853492ea53a88dc21bc0a6c70f0c8fcf0f479c9a Mon Sep 17 00:00:00 2001
From: Ian Petzer <ianpetzer@gmail.com>
Date: Fri, 25 Sep 2020 13:25:18 +0200
Subject: [PATCH] Update drag-coordinator.indexOf implementation to not use 
 findIndex as hasMany does not support this

---
 addon/services/drag-coordinator.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/addon/services/drag-coordinator.js b/addon/services/drag-coordinator.js
index d9f81ee..aae937b 100644
--- a/addon/services/drag-coordinator.js
+++ b/addon/services/drag-coordinator.js
@@ -5,9 +5,13 @@ import { isEqual } from '@ember/utils';
 
 
 function indexOf(items, a) {
-  return items.findIndex(function (element) {
-    return isEqual(element, a);
+  var returnIndex=null;
+  items.forEach(function(element, index) {
+    if (isEqual(element, a)) {
+      returnIndex=index;
+    }
   });
+  return returnIndex;
 }
 
 function swapInPlace(items, a, b) {