I got rid of the module import, replaced the script with
grid.umd.js
but so much code I have in the definition of the grid e.g.
processItems({ items, record, column }) {
is syntax not supported in IE 11.
I didn't anticipate dropping support of IE 11 but I see (https://www.bryntum.com/examples/scheduler/index.umd.html) doesn't work for me in IE 11.
Is it too much work for me to get IE 11 working fully with all my bells and whistles?