From 6a67167eedbadb0797e66e9c47c3e259f00c9eae Mon Sep 17 00:00:00 2001
From: David Sevilla Martin <me@datitisev.me>
Date: Tue, 10 Mar 2020 17:58:50 -0400
Subject: [PATCH] common: fix subtree retainer not adding new callback checks

---
 js/src/common/utils/SubtreeRetainer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/src/common/utils/SubtreeRetainer.ts b/js/src/common/utils/SubtreeRetainer.ts
index 0d7be4baf..3024277a9 100644
--- a/js/src/common/utils/SubtreeRetainer.ts
+++ b/js/src/common/utils/SubtreeRetainer.ts
@@ -7,7 +7,7 @@ export default class SubtreeRetainer {
     }
 
     check(...callbacks: Function[]) {
-        this.callbacks.concat(...callbacks);
+        this.callbacks.push(...callbacks);
     }
 
     /**