OfflineAudioCompletionEvent
The Web Audio API OfflineAudioCompletionEvent interface represents events that occur when the processing of an OfflineAudioContext is terminated. The complete event implements this interface.
var OfflineAudioCompletionEvent: {
prototype: OfflineAudioCompletionEvent;
new (type: string, eventInitDict: OfflineAudioCompletionEventInit): OfflineAudioCompletionEvent;
};