Crawler does not crawl absolute URIs even if they are on `prerender.origin`

[LorisSigrist]

Describe the bug

During Prerendering the Crawler is supposed to discover all internal links & follow them. However, if an internal link is on an absolute URI (https://my-site.com) or a Network-Path-refernece (//my-site.com) it will not be crawled, even if the origin is the same as prerender.origin.

I would expect these links to be crawled as well, assuming they are on the base path.

Example:

• prerender.origin = "https://my-page.com"
• base = "/base"
• href = "https://my-page.com/base/some-page" (should cause /some-page to be crawled)

Reproduction

https://github.com/LorisSigrist/sveltekit-absolute-uri-crawling-repro (instructions in README)

Logs

No response

System Info

System:
    OS: macOS 14.4.1
    CPU: (14) arm64 Apple M3 Max
    Memory: 1.02 GB / 36.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 21.7.3 - /opt/homebrew/bin/node
    npm: 10.5.0 - /opt/homebrew/bin/npm
    pnpm: 9.0.6 - /opt/homebrew/bin/pnpm
    bun: 1.1.8 - /opt/homebrew/bin/bun
  Browsers:
    Safari: 17.4.1
  npmPackages:
    @sveltejs/adapter-static: ^3.0.0 => 3.0.1 
    @sveltejs/kit: ^2.4.3 => 2.5.7 
    @sveltejs/vite-plugin-svelte: ^3.0.2 => 3.1.0 
    svelte: ^4.2.7 => 4.2.15 
    vite: ^5.2.6 => 4.5.2

Severity

serious, but I can work around it

Additional Information

<link rel="alternate" links MUST be absolute URIs according to the spec.

This issue makes it impossible for the crawler to discover alternate language versions of pages if they are only linked via alternate tags.

[HannesScript]

Why did LorisSigrist down like Static Side Generation? It's very important for me!!!