redirect to lowercase address

it's easier to do your own caching/deduping of requests if you just need to lowercase rather than form a checksum, the API will still return the checksummed address

Author: frolic

next.config.js

@@ -29,6 +29,17 @@ module.exports = {
     },
   ],
   headers: async () => [
+    {
+      source: "/api/:path*",
+      headers: [
+        { key: "Access-Control-Allow-Credentials", value: "true" },
+        { key: "Access-Control-Allow-Origin", value: "*" },
+        {
+          key: "Access-Control-Allow-Methods",
+          value: "GET,OPTIONS,PATCH,DELETE,POST,PUT",
+        },
+      ],
+    },
     {
       has: [
         {

src/pages/api/ens/resolve/[address].ts

@@ -34,10 +34,11 @@ export default async function handler(
   res: NextApiResponse<Data>
 ) {
   const inputAddress = firstParam(req.query.address);
-  const address = getAddress(inputAddress.toLowerCase());
+  const lowercaseAddress = inputAddress.toLowerCase();
+  const address = getAddress(lowercaseAddress);
 
-  if (address !== inputAddress) {
-    return res.redirect(308, resolve(req.url!, address));
+  if (inputAddress !== lowercaseAddress) {
+    return res.redirect(307, resolve(req.url!, lowercaseAddress));
   }
 
   try {