If you replace (() => { with (function() { in wrapper.js it appears to make the code work with IE 11.
Internet Explorer (all the way through version 11) does not support the use of JavaScript arrow functions. While you could certainly say "IE not supported", the trivial code change makes it usable in corporate environments where IE is commonly mandated.
If you replace
(() => {
with(function() {
in wrapper.js it appears to make the code work with IE 11.Internet Explorer (all the way through version 11) does not support the use of JavaScript arrow functions. While you could certainly say "IE not supported", the trivial code change makes it usable in corporate environments where IE is commonly mandated.