src/routes/blog/feed.xml/+server.ts


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import { RSS_ROOT } from '$/lib';
import { RSSChannelElement, RSSItemElement, RSSRootElement } from 'rsstrogen/rss';
import { XMLDeclaration, XMLDocumentRoot } from 'rsstrogen/xml'
import { dev } from '$app/environment';
import posts from '../posts';

export const prerender = true;
export const GET = async (req) => {
  const doc = new XMLDocumentRoot().child(
    new XMLDeclaration().version().encoding(),
    new RSSRootElement()
      .channel(
        new RSSChannelElement(
          'Latest blog posts for 7222e800',
          'Some Fancy Description Here',
          RSS_ROOT
        )
          .pubDate(new Date('2026-01-14T15:53:57Z') /* When the last item was published */)
          .lastBuildDate(new Date() /* When this file was last updated - usually when your build process last ran */)
          .language('en')
          .generator()
          .items(
            ...(await Promise.all(Object.values(posts)))
              .filter(v => v.metadata.published === true || (dev && req.url.searchParams.has('include-unpublished')))
              .map(({ metadata }) => {
                const item = new RSSItemElement(`${metadata.published === true ? '' : metadata.published ? '🚧 ' : '🛑 '}${metadata.title}`, metadata.blurb, new URL(`${metadata.id}-${metadata.slug}`, RSS_ROOT));
                if (metadata.author)
                  item.author(metadata.author);
                item.pubDate(new Date(metadata.created));
                item.guid(new URL(`${metadata.id}`, RSS_ROOT).href, true)
                return item;
              })
          ),
      )
  )
  return new Response(doc.toString(), {
    headers: {
      'Content-Type': 'application/rss+xml;charset=utf-8'
    }
  })
}