refactor: use Intl.ListFormat for joining the authors

Author: SeanCassiere

app/utils/blog.ts

@@ -1,15 +1,12 @@
+const joiner = new Intl.ListFormat('en-US', {
+  style: 'long',
+  type: 'conjunction',
+})
+
 export function formatAuthors(authors: Array<string>) {
   if (!authors.length) {
     return 'TanStack'
   }
 
-  if (authors.length === 1) {
-    return authors[0]
-  }
-
-  if (authors.length === 2) {
-    return authors.join(' and ')
-  }
-
-  return authors.slice(0, -1).join(', ') + ', and ' + authors.slice(-1)
+  return joiner.format(authors)
 }