Steps
- open this repo with code spaces
- install .NET Interactive Notebook extension
- open the browser develoepr tools
- open the COVID-19.dib file
Now the console output will show how the api is setup

And the issue now si that the uri used in fetch will not return the javascript but an authentication challenge that at the end will redirect to the content.
https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fcodespaces%2Fauth%2F1f2b55e9-d023-41ac-a41e-62a81dcc73da%3Fpath%3D%252fresources%252fdotnet-interactive.js%26query%3D%253fcacheBuster%253d1599849429679%26port%3D33209%26cid%3D9022302298382529f56085aba962154f
This results in a cross-origin blocked calls
