From 602eb62462cae2ef4201a3e0e6cdb1ac3d8510b1 Mon Sep 17 00:00:00 2001
From: Oliver Tacke <o.tacke@posteo.de>
Date: Thu, 24 Sep 2020 12:44:18 +0200
Subject: [PATCH] Fix closing of AudioContext that is already closed

When you were retrying after being done, the 'retry' handler was
trying to close the AudioContext that had already been closed by
the 'done' handler thus throwing an exception. Fixed by checking
the AudioContext's state for being closed already before trying
to close it.
---
 src/components/Recorder.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/Recorder.js b/src/components/Recorder.js
index 8faed86..e0190e6 100644
--- a/src/components/Recorder.js
+++ b/src/components/Recorder.js
@@ -248,7 +248,9 @@ export default class Recorder extends H5P.EventDispatcher {
     this.stream.getAudioTracks().forEach(track => track.stop());
     this.sourceNode.disconnect();
     this.scriptProcessorNode.disconnect();
-    this.audioContext.close();
+    if (this.audioContext.state !== 'closed') {
+      this.audioContext.close();
+    }
 
     delete this.userMedia;
   }