window.onkeydown = function (e) { if (!e) e = window.event; shiftHeld = e.shiftKey; }; window.onkeyup = function (e) { if (!e) e = window.event; shiftHeld = e.shiftKey; }; window.onmousemove = function (e) { if (!e) e = window.event; shiftHeld = e.shiftKey; }; export let shiftHeld;