Add sorting

lib/events.ts

@@ -6,15 +6,22 @@ import { MDXRemoteSerializeResult } from "next-mdx-remote";
 import { serialize } from "next-mdx-remote/serialize";
 
 const EVENTS_PATH = path.join("content", "events");
+const TERMS = ["winter", "spring", "fall"];
 
 export async function getYears(): Promise<string[]> {
   return (await fs.readdir(EVENTS_PATH, { withFileTypes: true }))
     .filter((dirent) => dirent.isDirectory())
-    .map((dirent) => dirent.name);
+    .map((dirent) => dirent.name)
+    .sort();
 }
 
 export async function getTermsByYear(year: string): Promise<string[]> {
-  return await fs.readdir(path.join(EVENTS_PATH, year));
+  return (
+    await fs.readdir(path.join(EVENTS_PATH, year), { withFileTypes: true })
+  )
+    .filter((dirent) => dirent.isDirectory() && TERMS.includes(dirent.name))
+    .map((dirent) => dirent.name)
+    .sort((a, b) => TERMS.indexOf(a) - TERMS.indexOf(b));
 }
 
 interface Metadata {