Update MetadataRoute to namespace

.eslintrc.json

@@ -63,7 +63,7 @@
         "@typescript-eslint/consistent-type-assertions": "warn",
         "no-array-constructor": "off",
         "@typescript-eslint/no-array-constructor": "warn",
-        "@typescript-eslint/no-namespace": "error",
+        "@typescript-eslint/no-namespace": "off",
         "no-use-before-define": "off",
         "@typescript-eslint/no-use-before-define": [
           "warn",

packages/next/src/build/webpack/loaders/metadata/resolve-route-data.test.ts

@@ -30,7 +30,7 @@ describe('resolveRouteData', () => {
     })
 
     it('should error with ts when specify both wildcard userAgent and specific userAgent', () => {
-      const data1: MetadataRoute['robots'] = {
+      const data1: MetadataRoute.Robots = {
         rules: [
           // @ts-expect-error userAgent is required for Array<Robots>
           {
@@ -43,14 +43,14 @@ describe('resolveRouteData', () => {
         ],
       }
 
-      const data2: MetadataRoute['robots'] = {
+      const data2: MetadataRoute.Robots = {
         rules: {
           // Can skip userAgent for single Robots
           allow: '/',
         },
       }
 
-      const data3: MetadataRoute['robots'] = {
+      const data3: MetadataRoute.Robots = {
         rules: { allow: '/' },
       }
 

packages/next/src/build/webpack/loaders/metadata/resolve-route-data.ts

@@ -2,7 +2,7 @@ import type { MetadataRoute } from '../../../../lib/metadata/types/metadata-inte
 import { resolveArray } from '../../../../lib/metadata/generate/utils'
 
 // convert robots data to txt string
-export function resolveRobots(data: MetadataRoute['robots']): string {
+export function resolveRobots(data: MetadataRoute.Robots): string {
   let content = ''
   const rules = Array.isArray(data.rules) ? data.rules : [data.rules]
   for (const rule of rules) {
@@ -43,7 +43,7 @@ export function resolveRobots(data: MetadataRoute['robots']): string {
 
 // TODO-METADATA: support multi sitemap files
 // convert sitemap data to xml string
-export function resolveSitemap(data: MetadataRoute['sitemap']): string {
+export function resolveSitemap(data: MetadataRoute.Sitemap): string {
   let content = ''
   content += '<?xml version="1.0" encoding="UTF-8"?>\n'
   content += '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n'
@@ -63,25 +63,22 @@ export function resolveSitemap(data: MetadataRoute['sitemap']): string {
   return content
 }
 
-export function resolveManifest(data: MetadataRoute['manifest']): string {
+export function resolveManifest(data: MetadataRoute.Manifest): string {
   return JSON.stringify(data)
 }
 
 export function resolveRouteData(
-  data:
-    | MetadataRoute['robots']
-    | MetadataRoute['sitemap']
-    | MetadataRoute['manifest'],
-  fileType: keyof MetadataRoute
+  data: MetadataRoute.Robots | MetadataRoute.Sitemap | MetadataRoute.Manifest,
+  fileType: 'robots' | 'sitemap' | 'manifest'
 ): string {
   if (fileType === 'robots') {
-    return resolveRobots(data as MetadataRoute['robots'])
+    return resolveRobots(data as MetadataRoute.Robots)
   }
   if (fileType === 'sitemap') {
-    return resolveSitemap(data as MetadataRoute['sitemap'])
+    return resolveSitemap(data as MetadataRoute.Sitemap)
   }
   if (fileType === 'manifest') {
-    return resolveManifest(data as MetadataRoute['manifest'])
+    return resolveManifest(data as MetadataRoute.Manifest)
   }
   return ''
 }

packages/next/src/lib/metadata/types/metadata-interface.ts

@@ -561,10 +561,10 @@ type SitemapFile = Array<{
 }>
 
 type ResolvingMetadata = Promise<ResolvedMetadata>
-type MetadataRoute = {
-  robots: RobotsFile
-  sitemap: SitemapFile
-  manifest: ManifestFile
+declare namespace MetadataRoute {
+  export type Robots = RobotsFile
+  export type Sitemap = SitemapFile
+  export type Manifest = ManifestFile
 }
 
 export { Metadata, ResolvedMetadata, ResolvingMetadata, MetadataRoute }

test/e2e/app-dir/metadata-dynamic-routes/app/manifest.ts

@@ -1,6 +1,6 @@
 import { MetadataRoute } from 'next'
 
-export default function manifest(): MetadataRoute['manifest'] {
+export default function manifest(): MetadataRoute.Manifest {
   return {
     name: 'Next.js App',
     short_name: 'Next.js App',

test/e2e/app-dir/metadata-dynamic-routes/app/robots.ts

@@ -1,6 +1,6 @@
 import type { MetadataRoute } from 'next'
 
-export default function robots(): MetadataRoute['robots'] {
+export default function robots(): MetadataRoute.Robots {
   return {
     rules: [
       {

test/e2e/app-dir/metadata-dynamic-routes/app/sitemap.ts

@@ -1,6 +1,6 @@
 import { MetadataRoute } from 'next'
 
-export default function sitemap(): MetadataRoute['sitemap'] {
+export default function sitemap(): MetadataRoute.Sitemap {
   return [
     {
       url: 'https://example.com',