AFAIK the window manager/shell is javascript. You can bring up a JS console and inspect/move windows around, or extend the shell UI - sort of like you would cr

AFAIK the window manager/shell is javascript. You can bring up a JS console and inspect/move windows around, or extend the shell UI - sort of like you would create a browser extension. I suspect they made that choice because... well.. javascript is everywhere and there are lots of developers that know it.