Why

Astro RSS is poor and incomplete (details below).

Decision: handcraft ❤️

• small functions, strong types (less than 40 lines of code)
• validated
• full flexibility
• clean output

Issues with Astro RSS

Poor docs.

No way to provide images and categories for items.

The generated rss doesn't even validate properly. Here's an example taken from their own feed.

<rss version="2.0">
<channel>
  <title>The Astro Blog</title>
  <description>News and updates about Astro.</description>
  <link>https://astro.build/</link>
  <item>
    <title>Astro 2.1</title>
    <link>https://astro.build/blog/astro-210/</link>
    <guid>https://astro.build/blog/astro-210/</guid>
    <description>[...]</description>
    <pubDate>Wed, 08 Mar 2023 00:00:00 GMT</pubDate>
</item>

Other options considered

Found only a few libraries.

Outdated, opinionated, not ergonomic:

• feed
• jsonfeed-to-rss