1 files changed, 19 insertions, 0 deletions
diff --git a/src/utils/helpers/sort.ts b/src/utils/helpers/sort.ts
new file mode 100644
index 0000000..ade82d0
--- /dev/null
+++ b/src/utils/helpers/sort.ts
@@ -0,0 +1,19 @@
+import { ArticlePreview } from '@ts/types/articles';
+import { PostsList } from '@ts/types/blog';
+
+type YearCollection = {
+  [key: string]: ArticlePreview[];
+};
+
+export const sortPostsByYear = (data: PostsList[]) => {
+  const yearCollection: YearCollection = {};
+
+  data.forEach((page) => {
+    page.posts.forEach((post) => {
+      const postYear = new Date(post.date.publication).getFullYear().toString();
+      yearCollection[postYear] = [...(yearCollection[postYear] || []), post];
+    });
+  });
+
+  return yearCollection;
+};