vercel__flags/apps/docs/app/robots.ts

import type { MetadataRoute } from "next";

const protocol = process.env.NODE_ENV === "production" ? "https" : "http";
const baseUrl = `${protocol}://${process.env.NEXT_PUBLIC_VERCEL_PROJECT_PRODUCTION_URL}`;

export default function robots(): MetadataRoute.Robots {
  return {
    rules: {
      userAgent: "*",
      allow: "/",
    },
    sitemap: `${baseUrl}/sitemap.xml`,
  };
}