chore: ingest source code

58 files from https://github.com/gothinkster/node-express-realworld-example-app

src/app/routes/article/author.mapper.ts

@@ -0,0 +1,12 @@
+import { User } from '../auth/user.model';
+
+const authorMapper = (author: any, id?: number) => ({
+  username: author.username,
+  bio: author.bio,
+  image: author.image,
+  following: id
+    ? author?.followedBy.some((followingUser: Partial<User>) => followingUser.id === id)
+    : false,
+});
+
+export default authorMapper;