🐛 BUG: Sitemap generation does not contain base path

[caioferrarezi]

What version of astro are you using?

1.0.0-beta.41

Are you using an SSR adapter? If so, which one?

None

What package manager are you using?

yarn

What operating system are you using?

Linux

Describe the Bug

I'm using the v0.1.0 of @astrojs/sitemap and it's not generating the urls with the base path configured.

In my project I have something like:

export default defineConfig({
  site: 'https://www.example.com.br',
  base: '/c',
  ...
})

The final sitemap URLs come without the /c, so https://www.example.com.br/c/my-path is https://www.example.com.br/my-path.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-dhjv1h

Participation

• I am willing to submit a pull request for this issue.

[caioferrarezi]

I forgot to say that the canonicalURL config option has the same problem as well. Apparently, adding something like https://www.example.com/c as the URL constructor base param trims the base path. https://github.com/withastro/astro/blob/main/packages/integrations/sitemap/src/index.ts#L71