Sample of using vite with aspnet (net6) with aspnet handling the views and vite handling the assets.
Run the typical npm run dev in the vite-app folder, then debug aspnet as usual.
Aspnet has the controllers and views, and the view specify what script file as entry.
If the vite url changes from https://localhost:3000 then change it accordingly in Program.cs file.
Everything should just work when publishing the aspnet site. Vite makes the assets and they becomes static files.