posts setup

.vitepress/theme/posts.data.ts

@@ -0,0 +1,30 @@
+import { createContentLoader, type ContentData } from "vitepress";
+import { groupBy } from "../utils";
+
+interface Post {
+  title: string;
+  url: string;
+  date: string;
+}
+
+type Dictionary = ReturnType<typeof transformRawPosts>;
+
+declare const data: Dictionary;
+export { data };
+
+function transformRawPosts(rawPosts: ContentData[]): Record<string, Post[]> {
+  const posts: Post[] = rawPosts
+    .map(({ url, frontmatter }) => ({
+      title: frontmatter.title,
+      url,
+      date: (frontmatter.date as Date).toISOString().slice(0, 10),
+    }))
+    .sort((a, b) => b.date.localeCompare(a.date));
+
+  return groupBy(posts, (post) => post.date.slice(0, 4));
+}
+
+export default createContentLoader("posts/*.md", {
+  includeSrc: true,
+  transform: (raw) => transformRawPosts(raw),
+});