I used your example to create tfs extension with Angular and I deployed it successfully. Now I would like to use the "baseUri" field in the vss-extension.json manifest to connect the extension to my server to debug the extension.
To do so I used ng serve --ssl to create a web server using https. In the tfs, I can see that I make requests to my server and successfully get all the elements it required, but the extension itself failed to load and stuck on the "Loading" symbol with the title: "Extension is taking longer than expected to load".
No errors in the console and no 404 responses.