vite relative paths

This is an example repro to illustrate https://github.com/vitejs/vite/pull/7644#issuecomment-1126198509.

Running npm run build (aka node index.js) causes Vite to build src/index.js to public/build. Running npm start starts a server.

Expected behaviour

public/build/app.js includes the following:

const routes = {
  home: () => __vitePreload(() => import("./chunks/home-fd4bed33.js"), true ? ["chunks/home-fd4bed33.js","assets/home-203ffc0a.css"] : void 0)
};

The dependencies are relative to /build/app.js, and should resolve to /build/chunks/home-fd4ved33.js and /build/assets/home-203ffc0a.css.

Actual behaviour

The dependencies are resolved against the document's baseURI. Even in the trivial case where we're visiting /, this breaks (/chunks/home-fd4ved33.js and /assets/home-203ffc0a.css), but even if we were to account for that somehow it would still be broken when we visited /some/nested/path.

As far as I can tell, the document baseURI is irrelevant.