stopRecording() needs a callback for successful operation

[toramanlis]

If you want to process the audio file with, for example, getRecordingFile() as soon as the recording stops, you need to wait a bit before attempting so.

Waiting with setTimeout() is not a good practice for this as you have no way of knowing how long youshould wait exactly.

Using setInterval() gets a bit cluttered since you need to clear it after finished or reattempt.