Graphics on BangleJS2

Since the BangleJS has a framebuffer, I expected its Graphics Object to extend the arraybuffer one, but that is apparently not the case as g.buffer is undefined and g.asImage("object") returns a copy.
Is there any way to access the framebuffer directly?

Edit: Couldn't find a good way to do it, did it anyway.

Also, I think 'LCD' was meant to be 'g' in https://www.espruino.com/Graphics (or does that not apply to the BangleJS2?):

On the few boards that do contain LCDs, there is a predefined variable
called 'LCD' (which is an instance of the Graphics Object).