TypeError: Cannot read properties of undefined (reading 'disconnect')

[p-himik]

Once every few weeks I can see this error in the logs:

TypeError: Cannot read properties of undefined (reading 'disconnect')
File "node_modules/waveform-playlist/lib/Playout.js" line 73 col 21 in AudioBufferSourceNode.source.onended
this.source.disconnect();

(the line number seems to be a bit off - maybe an issue with source maps).

The relevant code is this block: https://github.com/naomiaro/waveform-playlist/blob/main/src/Playout.js#L65-L83

But I can't figure out how the error could be happening in the first place - the only way seems to be if onended is called more than once, and I can't find why that would happen. I also can't reproduce the behavior, so I have a slight suspicion it might be macOS-specific (the users are on macOS).

Do you have any clue on why that error could appear?

[naomiaro]

hmm do you know which version of waveform-playlist this app is using?

[p-himik]

4.3.3, and I've been seeing that error since 4.1 or so (right when I started using waveform-playlist).