Hides unpublished articles from the RSS

src/pages/rss.xml.js

@@ -1,16 +0,0 @@
-import rss from '@astrojs/rss';
-import { getCollection } from 'astro:content';
-import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
-
-export async function GET(context) {
-	const posts = await getCollection('blog');
-	return rss({
-		title: SITE_TITLE,
-		description: SITE_DESCRIPTION,
-		site: context.site,
-		items: posts.map((post) => ({
-			...post.data,
-			link: `/blog/${post.id}/`,
-		})),
-	});
-}

src/pages/rss.xml.ts

@@ -0,0 +1,25 @@
+import rss from "@astrojs/rss";
+import { SITE_TITLE, SITE_DESCRIPTION } from "../consts";
+import { getCollection, type CollectionEntry } from "astro:content";
+import type { AstroUserConfig } from "astro";
+
+function publishedOnly(
+  p: CollectionEntry<"blog">,
+): p is CollectionEntry<"blog"> & { data: { pubDate: Date } } {
+  return p.data.pubDate !== undefined;
+}
+
+export async function GET(context: AstroUserConfig) {
+  const posts = (await getCollection("blog", publishedOnly)).sort(
+    (a, b) => b.data.pubDate.valueOf() - a.data.pubDate.valueOf(),
+  );
+  return rss({
+    title: SITE_TITLE,
+    description: SITE_DESCRIPTION,
+    site: context.site as string,
+    items: posts.map((post) => ({
+      ...post.data,
+      link: `/blog/${post.id}/`,
+    })),
+  });
+}