nuxt.config.js

const pkg = require('./package')

module.exports = {
  mode: 'universal',

  /*
  ** Headers of the page
  */
  head: {
    title: 'Now Playing on Spotify',
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: pkg.description }
    ],
    link: [{ rel: 'icon', type: 'image/x-icon', href: '/favicon.png' }]
  },

  /*
  ** Customize the progress-bar color
  */
  loading: { color: '#fff' },

  /*
  ** Global CSS
  */
  css: [],

  /*
  ** Plugins to load before mounting the App
  */
  plugins: [],

  /*
  ** Nuxt.js modules
  */
  modules: [
    // Doc: https://axios.nuxtjs.org/usage
    '@nuxtjs/axios',
    '@nuxtjs/dotenv'
  ],
  /*
  ** Axios module configuration
  */
  axios: {
    // See https://github.com/nuxt-community/axios-module#options
  },

  /*
  ** Build configuration
  */
  build: {
    watch: ['api'],
    /*
    ** You can extend webpack config here
    */
    extend(config, ctx) {}
  },
  serverMiddleware: ['~/api'],
  env: {
    spotifyId: process.env.SPOTIFY_CLIENT_ID,
    clientUrl: process.env.CLIENT_URL
  }
}