add accessible skip-to-content link

lib/helpers/fetcher.ts

@@ -3,5 +3,10 @@
 // note: fetch does *not* need to be poly/ponyfilled in Next.js:
 // https://nextjs.org/blog/next-9-1-7#new-built-in-polyfills-fetch-url-and-objectassign
 
-// eslint-disable-next-line no-undef
-export const fetcher = (url: RequestInfo) => fetch(url).then((res) => res.json());
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const fetcher = async (input: RequestInfo, init?: RequestInit): Promise<any> => {
+  const res = await fetch(input, init);
+  return res.json();
+};
+
+export default fetcher;