From 07a288398e16b2cb68ef1605434dce7031e59c8e Mon Sep 17 00:00:00 2001
From: Jake Archibald <jaffathecake@gmail.com>
Date: Wed, 23 Jun 2021 10:39:27 +0100
Subject: [PATCH] Spotted another leak (#1069)

---
 src/shared/prerendered-app/Intro/blob-anim/index.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/shared/prerendered-app/Intro/blob-anim/index.ts b/src/shared/prerendered-app/Intro/blob-anim/index.ts
index 8b1d9e58..53b266d2 100644
--- a/src/shared/prerendered-app/Intro/blob-anim/index.ts
+++ b/src/shared/prerendered-app/Intro/blob-anim/index.ts
@@ -329,10 +329,11 @@ export function startBlobAnim(canvas: HTMLCanvasElement) {
     hasFocus = false;
   };
 
-  new ResizeObserver(() => {
+  const resizeObserver = new ResizeObserver(() => {
     // Redraw for new canvas size
     if (!animating) drawFrame(0);
-  }).observe(canvas);
+  });
+  resizeObserver.observe(canvas);
 
   addEventListener('focus', focusListener);
   addEventListener('blur', blurListener);
@@ -341,6 +342,7 @@ export function startBlobAnim(canvas: HTMLCanvasElement) {
   function destruct() {
     removeEventListener('focus', focusListener);
     removeEventListener('blur', blurListener);
+    resizeObserver.disconnect();
     document.removeEventListener('visibilitychange', visibilityListener);
   }