From 07aea8d7e62fcd341c825d585d031640f0e1535e Mon Sep 17 00:00:00 2001
From: Andrew Boni <andrewfboni@gmail.com>
Date: Tue, 3 Nov 2015 15:51:08 -0800
Subject: [PATCH] Use ng-repeat with track by  to prevent dupes and improve
 performance

---
 angular-tree-control.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/angular-tree-control.js b/angular-tree-control.js
index 38439ea..4b402b8 100644
--- a/angular-tree-control.js
+++ b/angular-tree-control.js
@@ -261,7 +261,7 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
                     if(!template) {
                         template =
                             '<ul {{options.ulClass}} >' +
-                            '<li ng-repeat="node in node.{{options.nodeChildren}} | filter:filterExpression:filterComparator {{options.orderBy}}" ng-class="headClass(node)" {{options.liClass}}' +
+                            '<li ng-repeat="node in node.{{options.nodeChildren}} track by $index | filter:filterExpression:filterComparator {{options.orderBy}}" ng-class="headClass(node)" {{options.liClass}}' +
                             'set-node-to-data>' +
                             '<i class="tree-branch-head" ng-class="iBranchClass()" ng-click="selectNodeHead(node)"></i>' +
                             '<i class="tree-leaf-head {{options.iLeafClass}}"></i>' +