missing .output/public/index.html after upgrading to RC12

[flkrnr]

Environment

• Operating System: Linux
• Node Version: v16.18.0
• Nuxt Version: 3.0.0-rc.12
• Nitro Version: 0.6.0
• Package Manager: npm@8.19.2
• Builder: vite
• User Config: ssr, modules, buildModules, build, css, head, pwa, runtimeConfig
• Runtime Modules: @nuxtjs/tailwindcss@5.3.5, @vueuse/nuxt@9.4.0, @kevinmarrec/nuxt-pwa@0.8.0
• Build Modules: @pinia/nuxt@0.4.3

Reproduction

Currently I am building my nuxt3 application without SSR (via setting ssr: false in nuxt.config.ts).
Up until the upgrade from nuxt3 RC11 to RC12 there was an index.html file located in .output/public after building the application using nuxt build and I was able to deploy the generated SPA Application via AWS Amplify as example using the following config:

version: 1
backend:
  phases:
    build:
      commands:
        - '# Execute Amplify CLI with the helper script'
        - amplifyPush --simple
frontend:
  phases:
    preBuild:
      commands:
        - npm ci
    build:
      commands:
        - npm run build
  artifacts:
    # IMPORTANT - Please verify your build output directory
    baseDirectory: /.output/public
    files:
      - '**/*'
  cache:
    paths:
      - node_modules/**/*

Describe the bug

after building locally i noticed that the file .output/public/index.html was missing after upgrading from RC11 to RC12. Now with the index.html file missing, Its is not possible anymore to host a SPA without prerendered routes.

Please correct me if I missunderstood something there ✌️.

Additional context

No response

Logs

No response

[danielroe]

Are you running nuxt build? In this case it won't generate the file. Instead you can run nuxt generate and you should be good to go.

Related: nuxt/framework#7831.

[flkrnr]

@danielroe thanks for your response. Yes I was running nuxt build to generate the .output folder. (added it in the issue description) When I'm running nuxt generate every route is generated statically for a prerendered SPA. Isn't it possible anymore to just generate a "classic" not prerendered SPA with one single index.html file? I think in nuxt2 the command was nuxt build --spa .
according to the current nuxt3 docs for nuxi generate The command triggers the nuxi build command with the prerender argument set to true (https://v3.nuxtjs.org/api/commands/generate#nuxi-generate)

[shiva-prasad-reddy]

I'm having the same issue, using "npm run build" with "ssr: false" is not generating any html files but "npm run generate" with "ssr: false" is prerendering all the routes.

[danielroe]

This is intended behaviour (not generating the index when running nuxt build) as it prevents runtime config from working when running a server.

To generate only one route you can do:

export default defineNuxtConfig({
  nitro: {
    prerender: {
      crawlLinks: false,
      routes: ['/']
    }
  }
})