At least in my application, views are always bound to either an `m.prop` or an immutable value. What if you tracked when an `m.prop` was updated and queued up a redraw automatically? Redraws would be rate-limited via requestAnimationFrames/setTimeouts as usual.
I imagine this could have a significant performance impact, but don't know the mithril internals well enough to say.
EDIT: Thinking about it, the virtual DOM must be re-constructed on every redraw since the props aren't tied to a view. This probably wouldn't work well then.
The topic of side-effect incurring getter-setters was also brought up a few times in various forms. I wrote about my thoughts on it here ( https://github.com/lhorie/mithril.js/issues/78 )
As far as redrawing impact goes, Mithril does rate-limiting, so even attempting to subvert m.prop to force it to spam redraws should still perform ok.
I imagine this could have a significant performance impact, but don't know the mithril internals well enough to say.
EDIT: Thinking about it, the virtual DOM must be re-constructed on every redraw since the props aren't tied to a view. This probably wouldn't work well then.