fix(nuxt): restore prerenderedAt behaviour pending next patch

packages/nuxt/src/app/composables/payload.ts

@@ -79,7 +79,10 @@ async function _importPayload (payloadURL: string) {
 export async function isPrerendered (url = useRoute().path) {
   // Note: Alternative for server is checking x-nitro-prerender header
   const nuxtApp = useNuxtApp()
-  if (!appManifest) { return !!nuxtApp.payload.prerenderedAt }
+  if (nuxtApp.payload.prerenderedAt) {
+    return true
+  }
+  if (!appManifest) { return false }
   const manifest = await getAppManifest()
   if (manifest.prerendered.includes(url)) {
     return true

test/bundle.test.ts

@@ -19,7 +19,7 @@ describe.skipIf(process.env.SKIP_BUNDLE_SIZE === 'true' || process.env.ECOSYSTEM
   for (const outputDir of ['.output', '.output-inline']) {
     it('default client bundle size', async () => {
       const clientStats = await analyzeSizes('**/*.js', join(rootDir, outputDir, 'public'))
-      expect.soft(roundToKilobytes(clientStats.totalBytes)).toMatchInlineSnapshot('"99.1k"')
+      expect.soft(roundToKilobytes(clientStats.totalBytes)).toMatchInlineSnapshot('"99.2k"')
       expect(clientStats.files.map(f => f.replace(/\..*\.js/, '.js'))).toMatchInlineSnapshot(`
         [
           "_nuxt/entry.js",

test/fixtures/basic/nuxt.config.ts

@@ -47,9 +47,6 @@ export default defineNuxtConfig({
       }
     },
     routeRules: {
-      // TODO: update this test
-      // pretend to be fully prerendered
-      '/**': { prerender: true },
       '/route-rules/spa': { ssr: false },
       '/hydration/spa-redirection/**': { ssr: false },
       '/no-scripts': { experimentalNoScripts: true }

test/fixtures/basic/plugins/prerender.server.ts

@@ -0,0 +1,4 @@
+export default defineNuxtPlugin((nuxtApp) => {
+  // Pretend to be prerendered
+  nuxtApp.payload.prerenderedAt = Date.now()
+})