Skip inactive or experimental routes for Core.

Author: desrosj

packages/wp-build/lib/build.mjs

@@ -1735,10 +1735,27 @@ async function buildRoute( routeName ) {
  *
  * @return {Promise<void>}
  */
-async function buildAllRoutes() {
+async function buildAllRoutes( activePageIds = null ) {
 	console.log( '\n🚦 Phase 3: Building routes...\n' );
 
-	const routes = getAllRoutes( ROOT_DIR );
+	const allRoutes = getAllRoutes( ROOT_DIR );
+
+	// When activePageIds is provided, skip routes whose pages are all inactive.
+	const routes = activePageIds
+		? allRoutes.filter( ( routeName ) => {
+				const metadata = getRouteMetadata( ROOT_DIR, routeName );
+				if (
+					! metadata ||
+					! metadata.pages ||
+					metadata.pages.length === 0
+				) {
+					return false;
+				}
+				return metadata.pages.some( ( page ) =>
+					activePageIds.has( page )
+				);
+		  } )
+		: allRoutes;
 
 	if ( routes.length === 0 ) {
 		console.log( '   No routes found, skipping.\n' );
@@ -1821,8 +1838,31 @@ async function buildAll( baseUrlExpression ) {
 		} )
 	);
 
-	// Build routes
-	await buildAllRoutes();
+	// Normalize PAGES config to support both string and object formats
+	const normalizedPages = PAGES.map( ( page ) => {
+		if ( typeof page === 'string' ) {
+			return { id: page, init: [], title: undefined };
+		}
+		return {
+			id: page.id,
+			init: page.init || [],
+			title: page.title || undefined,
+			experimental: page.experimental || false,
+		};
+	} );
+
+	// When building for WordPress Core, exclude experimental pages.
+	const isCoreBuild =
+		boolConfigVal( process.env.IS_WORDPRESS_CORE ) ??
+		boolConfigVal( process.env.npm_package_config_IS_WORDPRESS_CORE );
+	const activePages = isCoreBuild
+		? normalizedPages.filter( ( page ) => ! page.experimental )
+		: normalizedPages;
+
+	const activePageIds = new Set( activePages.map( ( p ) => p.id ) );
+
+	// Build only routes that belong to active pages.
+	await buildAllRoutes( activePageIds );
 
 	// Collect route and page data for PHP generation
 	// Use flatMap to expand routes with multiple pages into separate entries
@@ -1849,28 +1889,6 @@ async function buildAll( baseUrlExpression ) {
 		} );
 	} );
 
-	// Normalize PAGES config to support both string and object formats
-	const normalizedPages = PAGES.map( ( page ) => {
-		if ( typeof page === 'string' ) {
-			return { id: page, init: [], title: undefined };
-		}
-		return {
-			id: page.id,
-			init: page.init || [],
-			title: page.title || undefined,
-			experimental: page.experimental || false,
-		};
-	} );
-
-	// When building for WordPress Core, exclude experimental pages.
-	const isCoreBuild =
-		boolConfigVal( process.env.IS_WORDPRESS_CORE ) ??
-		boolConfigVal( process.env.npm_package_config_IS_WORDPRESS_CORE );
-	const activePages = isCoreBuild
-		? normalizedPages.filter( ( page ) => ! page.experimental )
-		: normalizedPages;
-
-	const activePageIds = new Set( activePages.map( ( p ) => p.id ) );
 	const activeRoutes = routes.filter( ( r ) => activePageIds.has( r.page ) );
 
 	const pageData = activePages.map( ( page ) => {