Bug Sveltekit External Link

Demonstrate static build bug when using a <link> to an external resource.

bug-sveltekit-external-link

Run npm run build.

To create this reproduction, I did:

npm init svelte@next bug-sveltekit-external-link
cd bug-sveltekit-external-link

The package.json was updated with these:

  "devDependencies": {
    "@sveltejs/adapter-static": "^1.0.0-next.26",
    "@sveltejs/kit": "^1.0.0-next.229",
    "svelte": "^3.46.1"
  },

Did npm install.

Then the app.html file was edited, adding a single stylesheet <link> served externally to the <head> section. E.g.:

<link rel="stylesheet" href="/webjars/mdi__font/5.8.55/css/materialdesignicons.min.css">

Then build fails with npm run build.