From 3884998f3b44f3bbbf4a627c66754c99566e33ef Mon Sep 17 00:00:00 2001
From: lennartboeckx <lennart_boeckx@hotmail.com>
Date: Sun, 17 Dec 2017 22:14:41 +0100
Subject: [PATCH] fixed memory leak because eventlisteners weren't destroyed
 (#3728)

---
 lib/timeline/Core.js              | 1 +
 lib/timeline/component/ItemSet.js | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/lib/timeline/Core.js b/lib/timeline/Core.js
index dee44004..719c77cf 100644
--- a/lib/timeline/Core.js
+++ b/lib/timeline/Core.js
@@ -527,6 +527,7 @@ Core.prototype.destroy = function () {
     }
   }
   this.listeners = null;
+  this.hammer && this.hammer.destroy();
   this.hammer = null;
 
   // give all components the opportunity to cleanup
diff --git a/lib/timeline/component/ItemSet.js b/lib/timeline/component/ItemSet.js
index a5b0b688..2df52931 100644
--- a/lib/timeline/component/ItemSet.js
+++ b/lib/timeline/component/ItemSet.js
@@ -483,6 +483,8 @@ ItemSet.prototype.destroy = function() {
   this.setItems(null);
   this.setGroups(null);
 
+  this.hammer && this.hammer.destroy();
+  this.groupHammer && this.groupHammer.destroy();
   this.hammer = null;
 
   this.body = null;