added contentParser with type support

src/lib/contentParser.astro

@@ -0,0 +1,16 @@
+---
+import {
+  getCollection,
+  type CollectionEntry,
+  type CollectionKey,
+} from "astro:content";
+
+export const getSinglePage = async <C extends CollectionKey>(
+  collectionName: C,
+): Promise<CollectionEntry<C>[]> => {
+  const allPages = await getCollection(collectionName);
+  const removeIndex = allPages.filter((data) => data.id.match(/^(?!-)/));
+  const removeDrafts = removeIndex.filter((data) => !data.data.draft);
+  return removeDrafts;
+};
+---