pawol.nu/app/robots.js

export default function robots() {
  const isProduction = process.env.NEXT_PUBLIC_ENV === 'production';

  if (!isProduction) {
    return {
      rules: {
        userAgent: '*',
        disallow: '/',
      },
    }
  }

  return {
    rules: {
      userAgent: '*',
      allow: '/',
    },
    sitemap: `${process.env.NEXT_PUBLIC_SITE_URL || 'https://pawol.nu'}/sitemap.xml`,
  }
}