Similar to #386.
The template throws the following error in Internet Explorer 11:

The error is coming from configureStore.ts:

Please consider adding a polyfill to the template for this.
Thanks for reporting this!
I'll add this as a note to #484, and close this one as duplicate.
How to resolve this?
Most helpful comment
https://github.com/aspnet/JavaScriptServices/wiki/Supporting-Internet-Explorer-11-(or-older)