Problem generating a sitemap

[ljrodriguez1]

What version of astro are you using?

2.1.2

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

Vercel

What package manager are you using?

npm

What operating system are you using?

Linux, WSL2

What browser are you using?

Chrome

Describe the Bug

The bug i Am experiencing is with this minimal astro config

export default defineConfig({
  site: "https://example.com",
  base: "/blog",
  output: "static",
  adapter: vercel(),
  integrations: [
    sitemap(),
  ],
  trailingSlash: "never",
});

This produce 2 sitemap files, the first one is sitemap-index.xml

<?xml version="1.0" encoding="UTF-8"?><sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://example.com/sitemap-0.xml</loc></sitemap></sitemapindex>

Here we should have https://example.com/blog/sitemap-0.xml

then in the second file: sitemap-0.xml i have this:

<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1"><url><loc>https://sundes.com/blogpost/1</loc></url></urlset>

where i should have a url like https://sundes.com/blog/post/1

I think this is a bug in the plugin, i will try to fix this, but i am not sure if i could create a working PR for this

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-47cfzy?file=astro.config.mjs

Participation

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

[43081j]

if i run the repro locally it seems to work fine.

we get a sitemap-index.xml which has one entry: [...]/blog/sitemap-0.xml

that then has several /blog/blog/[...] entries (/blog/ twice in each one but that seems different to your problem)

maybe its just me though? could you try the repro again?

[andremralves]

if i run the repro locally it seems to work fine.

I think it's because the 'trailingSlash: "never"' option is missing in the repro.

I tested locally and this error seems to occur when both base: "/something" and trailingSlash: "never" options are set. So the sitemap plugin generates a URL without the trailing slash for the base path.

I think I can solve this issue. If nobody is currently working to solve it, I would like to work on this issue.

[43081j]

@andremralves go for it, doesn't sound like anyone's on it

im gonna guess its some buggy concatenation in the sitemap integration, probably a good place to start. joining paths without a trailing slash to separate them

assuming depending on the node standard lib is fine - could maybe use path.join