Problems with importing libraries into typescript .ts files and cors errors

Question

I am trying to build a fairly simple html canvas game in typescript, and for that I plan to use the Konva library. I can easily import it into my html file with <script src="... which should allow my program to run. But since the typescript is in a separate folder I need to import it separately in order to not cause errors and to use suggestions in vscode. Using import requires that when connected to an html file it has type="module", and even though all of these files are in a folder together on my desktop, importing a js file that is a module causes CORS errors.

Is there any other way to do any of this? Every answer I seem to find requires creating a local http webserver, and that really seems like way to much effort for a coding an html canvas game.