Did this solution work for you? VSCode offers minimal support for JS embedded in HTML. They have no intention of improving this either. The current structure of having the examples as HTML files with embedded javascript is great as long I just need to read the code. If I need to dig deeper into any of the import in the file, VSCode simply is not able to figure out where to find the import.
I’m considering having a local branch where I port all the examples to use discrete JS files.