next.js/packages/create-next-app/templates/app-empty/ts/app/layout.tsx

import type { Metadata } from "next";

export const metadata: Metadata = {
  title: "Create Next App",
  description: "Generated by create next app",
};

export default function RootLayout({ children }: LayoutProps<"/">) {
  return (
    <html lang="en">
      <body>{children}</body>
    </html>
  );
}