Yes, that could be a good idea.

Does it make sense to just add this to Bangle.getOptions() ?

I tried this already but don't think its a good idea. Bangle.getOptions internally calls the same function as Bangle.setOptions, and options never change except by Bangle.setOptions (I think). Adding poll rate to the options would break those implicit rules.

What about just Bangle.getPollInterval()?

Good point. We could just add getPollInterval, I guess it's ok.

I'm just a bit anxious about adding a whole bunch of extra functions as it makes it harder to find what you're after. It's also basically impossible for me to remove a method after it's been added :)

There is http://www.espruino.com/Reference#l_Bangle_dbg which returns debug info. It would make a lot of sense to add it in there I guess

I agree. I'll prepare a PR with Bangle.dbg().pollInterval

brilliant - thanks!