fix(nuxt): fix syntax error when serializing route meta (#25515)

packages/nuxt/src/pages/utils.ts

@@ -457,7 +457,7 @@ export function normalizeRoutes (routes: NuxtPage[], metaImports: Set<string> =
         }
       } else {
         if (route.meta != null) {
-          metaRoute.meta = `{ ...(${metaImportName}) || {}), ...${route.meta} }`
+          metaRoute.meta = `{ ...(${metaImportName} || {}), ...${route.meta} }`
         }
 
         if (route.alias != null) {

packages/nuxt/test/__snapshots__/pages-override-meta-disabled.test.ts.snap

@@ -1,4 +1,14 @@
 {
+  "pushed route, skips generation from file": [
+    {
+      "alias": "["pushed-route-alias"].concat(mockMeta?.alias || [])",
+      "component": "() => import("pages/route-file.vue").then(m => m.default || m)",
+      "meta": "{ ...(mockMeta || {}), ...{"someMetaData":true} }",
+      "name": "mockMeta?.name ?? "pushed-route"",
+      "path": "mockMeta?.path ?? "/"",
+      "redirect": "mockMeta?.redirect",
+    },
+  ],
   "route without file": [
     {
       "alias": "["sweet-home"]",

packages/nuxt/test/__snapshots__/pages-override-meta-enabled.test.ts.snap

@@ -1,4 +1,13 @@
 {
+  "pushed route, skips generation from file": [
+    {
+      "alias": "["pushed-route-alias"]",
+      "component": "() => import("pages/route-file.vue").then(m => m.default || m)",
+      "meta": "{"someMetaData":true}",
+      "name": ""pushed-route"",
+      "path": ""/"",
+    },
+  ],
   "route without file": [
     {
       "alias": "["sweet-home"]",

packages/nuxt/test/pages.test.ts

@@ -542,6 +542,18 @@ describe('pages:generateRoutesFromFiles', () => {
         }
       ]
     },
+    {
+      description: 'pushed route, skips generation from file',
+      output: [
+        {
+          name: 'pushed-route',
+          path: '/',
+          alias: ['pushed-route-alias'],
+          meta: { someMetaData: true },
+          file: `${pagesDir}/route-file.vue`,
+        }
+      ]
+    },
   ]
 
   const normalizedResults: Record<string, any> = {}