nuxt.config.js

export default {
  srcDir: 'app',
  /*
  ** Headers of the page
  */
  head: {
    title: 'Nuxt Firebase SNS Example',
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: 'Nuxt.js project' }
    ],
    link: [
      { rel: 'stylesheet', href: 'https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css' },
      { rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' }
    ]
  },
  /*
  ** Customize the progress bar color
  */
  css: [
    '~/assets/base.css'
  ],
  plugins: [
    '~/plugins/firebase'
  ],
  loading: { color: '#00d1b2' },
  /*
  ** Build configuration
  */
  env: {
    APIKEY: process.env.APIKEY,
    AUTHDOMAIN: process.env.AUTHDOMAIN,
    DATABASEURL: process.env.DATABASEURL,
    PROJECTID: process.env.PROJECTID,
    STORAGEBUCKET: process.env.STORAGEBUCKET,
    MESSAGINGSENDERID: process.env.MESSAGINGSENDERID,
    APPID: process.env.APPID
  },
  build: {
    babel: {
      presets({ isServer }) {
        return [
          [
            require.resolve('@nuxt/babel-preset-app'),
            {
              buildTarget: isServer ? 'server' : 'client',
              corejs: { version: 3 }
            }
          ]
        ]
      }
    }
  }
}