@jonny Thanks. It seems a little easier to escape now, fast mouse movements or hitting the side of the screen work. But it's the general idea.
I stuck it in the lower case version of the URL at my website:
https://qaz.wtf/js/
I can credit you differently if you'd like.
@elithebearded
dang. we'll have to write a predictive kalman filter to move the window one or two steps ahead of where the mouse is going to be then. no credit needed, it was your site :)