Event handler for all errors in AudioWorkletProcessor

[mehagar]

The current specification includes onprocessorerror (https://www.w3.org/TR/webaudio/#dom-audioworkletnode-onprocessorerror), but I would like to be able to get events from errors that may happen in other contexts.

For example, I have this:

class CustomAudioWorletProcessor extends AudioWorkletProcessor {
  constructor(options) {
    super();
    this.port.onmessage = ((message) => throw new Error('test exception'));
  }
}

onprocessorerror will not receive the test exception, because the error does not occur in the constructor. It is only later when I send a message to the worklet processor that the exception happens.

Is it possible to do this already? Ideally I would be able to register an event handler like so:

myAudioNode.onerror = (event) => { console.log('error in worklet') }

[hoch]

onprocessorerror gets triggered only by two cases:

1. The processor constructor.
2. The processor's process() function.

See https://webaudio.github.io/web-audio-api/#dom-audioworkletnode-onprocessorerror.

For your question, we have a plan to add an error handler on AudioWorkletGlobalScope, but the spec work has not been started:
#2431

[hoch]

Closing this since we have #2431 to track the same problem.