fix(nuxt): remove undefined keys in route object

packages/nuxt/src/pages/utils.ts

@@ -139,8 +139,8 @@
 const metaCache: Record<string, Partial<Record<keyof NuxtPage, any>>> = {}
 async function getRouteMeta (contents: string, absolutePath: string): Promise<Partial<Record<keyof NuxtPage, any>>> {
   // set/update pageContentsCache, invalidate metaCache on cache mismatch
-  if (!(absolutePath in pageContentsCache) || pageContentsCache[absolutePath] !== contents) { 
-    pageContentsCache[absolutePath] = contents 
+  if (!(absolutePath in pageContentsCache) || pageContentsCache[absolutePath] !== contents) {
+    pageContentsCache[absolutePath] = contents
     delete metaCache[absolutePath]
   }
 
@@ -183,7 +183,7 @@
       try {
         extractedMeta[key] = JSON.parse(runInNewContext(`JSON.stringify(${valueString})`, {}))
       } catch {
         console.debug(`[nuxt] Skipping extraction of \`${key}\` metadata as it is not JSON-serializable (reading \`${absolutePath}\`).`)
         dynamicProperties.add(key)
         continue
       }
@@ -196,7 +196,7 @@
           continue
         }
         if (element.type !== 'Literal' || typeof element.value !== 'string') {
           console.debug(`[nuxt] Skipping extraction of \`${key}\` metadata as it is not an array of string literals (reading \`${absolutePath}\`).`)
           dynamicProperties.add(key)
           continue
         }
@@ -207,7 +207,7 @@
     }
 
     if (property.value.type !== 'Literal' || typeof property.value.value !== 'string') {
       console.debug(`[nuxt] Skipping extraction of \`${key}\` metadata as it is not a string literal or array of string literals (reading \`${absolutePath}\`).`)
       dynamicProperties.add(key)
       continue
     }
@@ -414,6 +414,12 @@
         redirect: serializeRouteValue(page.redirect),
       }
 
+      for (const key of ['path', 'name', 'meta', 'alias', 'redirect'] satisfies NormalizedRouteKeys) {
+        if (route[key] === undefined) {
+          delete route[key]
+        }
+      }
+
       if (page.children?.length) {
         route.children = normalizeRoutes(page.children, metaImports, overrideMeta).routes
       }

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

@@ -15,7 +15,6 @@
       "meta": "{"hello":"world"}",
       "name": ""home"",
       "path": ""/"",
-      "redirect": undefined,
     },
   ],
   "should allow pages with `:` in their path": [

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

@@ -14,7 +14,6 @@
       "meta": "{"hello":"world"}",
       "name": ""home"",
       "path": ""/"",
-      "redirect": undefined,
     },
   ],
   "should allow pages with `:` in their path": [