nuxt.config.js

export default {
  // Global page headers: https://go.nuxtjs.dev/config-head
  head: {
    title: 'nuxt-ssr-firebase-auth',
    htmlAttrs: {
      lang: 'en'
    },
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: '' },
      { name: 'format-detection', content: 'telephone=no' }
    ],
    link: [
      { rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' }
    ]
  },

  // Global CSS: https://go.nuxtjs.dev/config-css
  css: [
  ],

  // Plugins to run before rendering page: https://go.nuxtjs.dev/config-plugins
  plugins: [
  ],

  // Auto import components: https://go.nuxtjs.dev/config-components
  components: true,

  // Modules for dev and build (recommended): https://go.nuxtjs.dev/config-modules
  buildModules: [
    // https://go.nuxtjs.dev/typescript
    '@nuxt/typescript-build',
    // https://go.nuxtjs.dev/stylelint
    '@nuxtjs/stylelint-module',
  ],

  // Modules: https://go.nuxtjs.dev/config-modules
  modules: [
    '@nuxtjs/pwa',
    '@nuxtjs/firebase',
  ],

  firebase: {
    config: {
      apiKey: process.env.FB_API_Key,
      authDomain: process.env.FB_AUTH_DOMAIN,
      databaseURL: process.env.FB_DATABASE_URL,
      projectId: process.env.FB_PROJECT_ID,
      storageBucket: process.env.FB_STORAGE_BUCKET,
      messagingSenderId: process.env.FB_MESSAGING_SENDER_ID,
      measurementId: process.env.FB_MESSAGING_ID || '',
      appId: process.env.FB_APP_ID,
    },
    services: {
      firestore: true,
      auth: {
        initialize: {
          onAuthStateChangedMutation: 'auth/ON_AUTH_STATE_CHANGED_MUTATION',
          onAuthStateChangedAction: 'auth/onAuthStateChangedAction',
        },
        ssr: true
      }
    }
  },

  pwa: {
    meta: false,
    icon: false,
    workbox: {
      importScripts: [
        '/firebase-auth-sw.js'
      ],
      // by default the workbox module will not install the service worker in dev environment to avoid conflicts with HMR
      // only set this true for testing and remember to always clear your browser cache in development
      dev: process.env.NODE_ENV === 'development',
    }
  },

  // Build Configuration: https://go.nuxtjs.dev/config-build
  build: {
  }
}