Enable CORS

exam/routes/routes.php

@@ -11,6 +11,14 @@ SimpleRouter::error(function (Request $request, Exception $exception) {
   Response::response()->httpCode(is_int($code) ? $code : 500)->json(["message" => $exception->getMessage()]);
 });
 
+// CORS
+SimpleRouter::options('/', function () {
+  Response::response()
+    ->header("Access-Control-Allow-Origin: *")
+    ->header("Access-Control-Allow-Methods: *")
+    ->header("Access-Control-Allow-Headers: *");
+})->setMatch('/(.+)/is');
+
 // Index
 SimpleRouter::all("/", function () {
   Response::redirect("docs", 301);