Don't attempt to save index when there are no posts or profile details (complained about directory not existing)

src/save/writeToIndex.js

@@ -29,6 +29,10 @@ async function writeToIndex(posts, profilePaths, user) {
         posts: newAndUpdatedEntries.concat(user.indexed.original),
     };
 
+    if (!data.profile.image && !data.profile.description && !data.posts.length) {
+        return;
+    }
+
     return fs.writeFile(filename, yaml.safeDump(data));
 }