Get existing Watches

Is there any way to get a list of listeners created by setWatch()?

I was thinking about creating a global listener, so it would be nice if it could do something like

setWatch(()=>{
  // check only this function is listening
  if (getWatches(BTN1).length === 1) doCoolStuff();
}, BTN1);

And that would allow me to doCoolStuff by pressing BTN1 from e.g. most clocks, but without interfering with apps that actually use BTN1.

And I guess the same question for Bangle.on()? (Because I just realized it would be neat to swipe from the clock to settings/launcher)

there is global['\xff'].watches array and the pin is there too so it is doable. However I'm not sure it is stable interface for getting list of watches.

Fri 2021.04.23

While the instruction @fanoush provided in post #2 would most likely be the preferred method, from the WebIDE use of dump() also will provide that detail.

Thanks for the replies.
That does sound like too much bother (for now), guess I'll just stick with a "try not to assign buttons that are already in use" message.

And I guess the same question for Bangle.on()?

You can do similarly - with Bangle["#onfoobar"]

But yes, while those haven't changed in a while there is no guarantee they won't change in the future.