some origin header

.gitignore

@@ -34,3 +34,5 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+.env

src/middleware.ts

@@ -0,0 +1,12 @@
+import { NextResponse } from 'next/server';
+import type { NextRequest } from 'next/server';
+
+export function middleware(req: NextRequest) {
+  const res = NextResponse.next();
+  res.headers.set('X-Nonszy-Origin', process.env.ORIGIN ?? 'anywhere');
+  return res;
+}
+
+export const config = {
+  matcher: '/:path*',
+};