Using @nuxtjs/router breaks `nuxi generate`

Environment

Nuxt CLI v3.0.0-rc.5 00:24:09
RootDir: /home/developer/verein/rtc-koeln/Rad-Touristik-Club-Koln-e-V-1972.github.io 00:24:09
Nuxt project info: 00:24:09

• Operating System: Linux
• Node Version: v18.5.0
• Nuxt Version: 2.16.0-27616340.013f051b
• Package Manager: npm@8.13.2
• Builder: webpack
• User Config: build, buildModules, components, css, head, modules, plugins, srcDir, ssr, target, serverHandlers, devServerHandlers, bridge
• Runtime Modules: -
• Build Modules: (), @nuxtjs/router@1.7.0, @nuxtjs/stylelint-module@4.1.0, @nuxtjs/vuetify@1.12.3, @pinia/nuxt@0.3.0, @nuxt/bridge@3.0.0-27628751.3df21c7

Reproduction

['@nuxtjs/router', { fileName: 'router.ts' }],

import Vue from 'vue'
import Router from 'vue-router'
import VIndex from '~/pages/VIndex.vue'
import VCalendar from '~/pages/VCalendar.vue'
import VContact from '~/pages/VContact.vue'
import VGallery from '~/pages/VGallery.vue'
import VGuestbook from '~/pages/VGuestbook.vue'

Vue.use(Router)

export function createRouter() {
    return new Router({
        mode: 'history',
        routes: [
            {
                component: VIndex,
                name: 'index',
                path: '',
            },
            {
                component: VCalendar,
                name: 'calendar',
                path: '/calendar',
            },
            {
                component: VContact,
                name: 'contact',
                path: '/contact',
            },
            {
                component: VGallery,
                name: 'gallery',
                path: '/gallery',
            },
            {
                component: VGuestbook,
                name: 'guestbook',
                path: '/guestbook',
            },
        ],
    })
}

Describe the bug

Using a router.ts works fine with nuxi dev, but with nuxi generate the index.html and the folders with the components are missing.
It works with node .output/server/index.mjs, but not uploaded to a static site.

Additional context

No response

Logs

Nuxt CLI v3.0.0-rc.5                                                                                                                                                        00:21:32
ℹ Production build                                                                                                                                                          00:21:35
ℹ Bundling only for client side                                                                                                                                             00:21:35
ℹ Target: static                                                                                                                                                            00:21:35
ℹ Using components loader to optimize imports                                                                                                                               00:21:35
ℹ Discovered Components: .nuxt/components/readme.md                                                                                                                         00:21:35
✔ Builder initialized                                                                                                                                                       00:21:35
✔ Nuxt files generated                                                                                                                                                      00:21:35

✔ Client
  Compiled successfully in 59.04s


Hash: c9d5f2283fd5389c2fbc
Version: webpack 4.46.0
Time: 59042ms
Built at: 14.07.2022 00:22:35
                           Asset      Size  Chunks                                Chunk Names
  ../server/client.manifest.json  41.6 KiB          [emitted]                     
                      06dfcef.js   246 KiB       1  [emitted] [immutable]  [big]  commons/app
                      56ee819.js  1.49 KiB       2  [emitted] [immutable]         runtime
                        LICENSES  3.95 KiB          [emitted]                     
                      e96d531.js   173 KiB       0  [emitted] [immutable]         app
                      f40f709.js  1.92 MiB       3  [emitted] [immutable]  [big]  vendors/app
fonts/TacticSans-Bld.d0dcd35.otf  66.3 KiB          [emitted] [immutable]         
fonts/TacticSans-Reg.745135e.otf  64.5 KiB          [emitted] [immutable]         
 img/banner_vertikal.cc7568d.svg  3.99 KiB          [emitted] [immutable]         
 + 1 hidden asset
Entrypoint app [big] = 56ee819.js 06dfcef.js f40f709.js e96d531.js

WARNING in asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
This can impact web performance.
Assets: 
  06dfcef.js (246 KiB)
  f40f709.js (1.92 MiB)

WARNING in entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (1000 KiB). This can impact web performance.
Entrypoints:
  app (2.33 MiB)
      56ee819.js
      06dfcef.js
      f40f709.js
      e96d531.js


WARNING in webpack performance recommendations: 
You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.
For more info visit https://webpack.js.org/guides/code-splitting/
✔ Generated public .output/public                                                                                                                                     nitro 00:22:35
ℹ Generating output directory: public/                                                                                                                                      00:22:35
ℹ Generating pages                                                                                                                                                          00:22:37
✔ Client-side fallback created: 200.html                                                                                                                                    00:22:37
start Building server...                                                                                                                                              nitro 00:22:37
start Writing server bundle...                                                                                                                                        nitro 00:22:38
✔ Server built                                                                                                                                                        nitro 00:22:38
  ├─ .output/server/package.json (307 B) (183 B gzip)
  ├─ .output/server/index.mjs (458 B) (257 B gzip)
  ├─ .output/server/chunks/nitro/node-server.mjs.map (57.6 kB) (4.44 kB gzip)
  ├─ .output/server/chunks/nitro/node-server.mjs (17.1 kB) (5.5 kB gzip)
  ├─ .output/server/chunks/handlers/renderer.mjs.map (16.7 kB) (2.93 kB gzip)
  ├─ .output/server/chunks/handlers/renderer.mjs (12.6 kB) (4.09 kB gzip)
  ├─ .output/server/chunks/app/client.manifest.mjs.map (60.6 kB) (639 B gzip)
  └─ .output/server/chunks/app/client.manifest.mjs (42.7 kB) (7.52 kB gzip)
Σ Total size: 740 kB (155 kB gzip)
✔ You can preview this build using node .output/server/index.mjs                                                                                                      nitro 00:22:38
✔ You can now deploy .output/public to any static hosting!                                                                                                                  00:22:38

Process finished with exit code 0

Reproduce the issue with the shown router.ts configuration using nuxi generate, then compare its output with node .output/server/index.mjs. Inspect why static generation creates only the 200.html fallback instead of index.html and component folders. Done means the generated public output contains the pages needed for deployment to static hosting.