Script Errors when loading sample app in Internet Explorer

While evaluating Marko for a new project, we encountered the following errors in the browser console when loading the marko-express sample project in Internet Explorer 11.

Seeing the following errors in the browser console:

SCRIPT1003: Expected ':'
File: ComponentDef.js, Line 125, Column:48

SCRIPT5022: Cannot find module "/marko$4.9.1/src/components/ComponentDef" from "/marko$4.9.1/src/components"
File: index.js, Line: 434, Column: 13

I also tried loading https://markojs.com/ in Internet Explorer and received similar console errors:

SCRIPT1014: Invalid character
File: index-7c89f318.js, Line: 72, Column: 450

SCRIPT5009: '$_mod' is undefined
File: markojs.com, Line: 43, Column: 9