sitemap-build.tsx

const GetUrlElement = ({ host, route, date }: Url): string => {
  if (date) {
    return `<url><loc>${host}${route}</loc><lastmod>${date}</lastmod></url>`;
  } else return `<url><loc>${host}${route}</loc></url>`;
};

const GetSitemapXml = (urls: Array<Url>): string => `<?xml version="1.0" encoding="UTF-8"?>
    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    ${urls.map((url) => GetUrlElement(url)).join('')}
    </urlset>`;