almost done

lib/post.ts

@@ -0,0 +1,18 @@
+import fs from "fs";
+import path from "path";
+import matter from "gray-matter";
+
+const postsDirectory = path.join(process.cwd(), "..", "_posts");
+
+export async function getPostData(category: string, id: string) {
+  const fullPath = path.join(postsDirectory, category, `${id}.md`);
+  const fileContents = fs.readFileSync(fullPath, "utf8");
+
+  const matterResult = matter(fileContents);
+
+  return {
+    id,
+    content: matterResult.content,
+    ...matterResult.data,
+  };
+}