reverse index.html implemented

index.js

@@ -20,13 +20,26 @@ const http = require('http');
 
 exports.handler = (event, context, callback) => {
   const request = event.Records[0].cf.request;
-    
-  if (request.uri.endsWith('/')) {
+  
+  let prefixPath; // needed for 2nd condition
+
+  if (request.uri.match('.+/$')) {
     request.uri += 'index.html';
     callback(null, request);
-  } else if (request.uri.match('/[^/.]*$')) {
+  } else if (prefixPath = request.uri.match('(.+)/index.html')) {
     const response = {
-      status: '302',
+      status: '301',
+      statusDescription: 'Found',
+      headers: {
+        location: [{
+          key: 'Location', value: prefixPath[1] + '/',
+        }],
+      }
+    };
+    callback(null, response);
+  } else if (request.uri.match('/[^/.]+$')) {
+    const response = {
+      status: '301',
       statusDescription: 'Found',
       headers: {
         location: [{