Javascript Error In Simple Aurelia Asp.net 5.0 Rc1 Setup

I am attempting to setup a very basic Aurelia project in ASP.Net 5.0 RC1. I am getting the following JavaScript error after doing a basic initial setup. I am using TypeScript. Unha

Solution 1:

It seems like this is a known issue. The fix is somewhat simple. If you add a core-js mapping at the top of the map section in config.js, it fixes it.

For example,

map: {
    "core-js": "npm:core-js@1.2.6",
    // other mappings
}