Only activate partytown if necessary

astro.config.mjs

@@ -9,15 +9,15 @@ import image from '@astrojs/image';
 import mdx from '@astrojs/mdx';
 import partytown from '@astrojs/partytown';
 
-import { remarkReadingTime } from './src/utils/frontmatter.js';
-
+import { remarkReadingTime } from './src/utils/frontmatter.mjs';
 import { SITE } from './src/config.mjs';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
-// https://astro.build/config
+const whenExternalScripts = (items = []) =>
+	SITE.googleAnalyticsId ? (Array.isArray(items) ? items.map((item) => item()) : [items()]) : [];
+
 export default defineConfig({
-	// Astro uses this full URL to generate your sitemap and canonical URLs in your final build
 	site: SITE.origin,
 	base: SITE.basePathname,
 	trailingSlash: SITE.trailingSlash ? 'always' : 'never',
@@ -36,10 +36,11 @@ export default defineConfig({
 		}),
 		mdx(),
 
-		/* Disable this integration if you don't use Google Analytics (or other external script). */
-		partytown({
-			config: { forward: ['dataLayer.push'] },
-		}),
+		...whenExternalScripts(() =>
+			partytown({
+				config: { forward: ['dataLayer.push'] },
+			})
+		),
 	],
 
 	markdown: {