add sitemap route

Author: nemanjam

src/components/BaseHead.astro

@@ -82,7 +82,7 @@ const ogImageUrl = new URL(image, baseUrl);
     rel="sitemap"
     type="application/xml"
     title="Sitemap"
-    href={`${SITE_URL}/sitemap-index.xml`}
+    href={`${SITE_URL}${ROUTES.STATIC.SITEMAP}`}
   />
 
   {/* Open Graph / Facebook */}

src/constants/routes.ts

@@ -22,6 +22,8 @@ export const ROUTES = {
   STATIC: {
     IMAGES: '/images/',
     FAVICONS: '/images/favicons/',
+    /** generated at build-time only */
+    SITEMAP: '/sitemap-index.xml',
   },
   API: {
     OG_IMAGES: '/api/open-graph/',

src/libs/integrations/sitemap.ts

@@ -5,6 +5,7 @@ import { ROUTES } from '../../constants/routes';
 
 const { SITE_URL } = CONFIG;
 
+/** generated at build-time only */
 export const sitemapIntegration = () =>
   sitemap({
     serialize: (item) => {