Jelle @ Samson-IT

Agreed, that's even more specific 👍

Negative. I added a worker.terminate() just to be sure and freed the callback. That may be where my memory leak came from: I'm setting worker[index].callback to be my callback to...

Unfortunately my sexy japanese trackball doesn't have these features. I can see how making the hooks programmatically could be somewhat challenging though. Thanks for the insights @mikeclayton