Sort news years and news terms

lib/news.ts

@@ -6,6 +6,7 @@ import { MDXRemoteSerializeResult } from "next-mdx-remote";
 import { serialize } from "next-mdx-remote/serialize";
 
 const NEWS_PATH = path.join("content", "news");
+const TERMS = ["winter", "spring", "fall"];
 
 interface Metadata {
   author: string;
@@ -20,7 +21,8 @@ export interface News {
 export async function getNewsYears(): Promise<string[]> {
   return (await fs.readdir(NEWS_PATH, { withFileTypes: true }))
     .filter((dirent) => dirent.isDirectory())
-    .map((dirent) => dirent.name);
+    .map((dirent) => dirent.name)
+    .sort();
 }
 
 export async function getNewsTermsByYear(year: string): Promise<string[]> {
@@ -29,8 +31,9 @@ export async function getNewsTermsByYear(year: string): Promise<string[]> {
       withFileTypes: true,
     })
   )
-    .filter((dirent) => dirent.isDirectory())
-    .map((dirent) => dirent.name);
+    .filter((dirent) => dirent.isDirectory() && TERMS.includes(dirent.name))
+    .map((dirent) => dirent.name)
+    .sort((a, b) => TERMS.indexOf(a) - TERMS.indexOf(b));
 }
 
 export async function getNewsByTerm(