This demonstration seeks to resolve sveltejs/kit#7320.

Things to note:

1. vite.config.js features build.sourcemap = true

2. Added some flags for Node.js in package.json

   {
     "scripts": {
       "dev": "NODE_OPTIONS=--enable-source-maps vite dev",
       "build": "vite build",
       "preview": "NODE_OPTIONS=--enable-source-maps vite preview",
     }
   }

Despite the above, I could not set up breakpoints for server-side source maps in Chrome Dev tools. The source maps appears, but they are apparently not linked to Node.js when the dev or preview server launches.