nuxt.config.js

export default {
  mode: 'universal',
  /*
  ** Headers of the page
  */
  head: {
    title: process.env.npm_package_name || '',
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: process.env.npm_package_description || '' }
    ],
    link: [
      { rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' }
    ]
  },
  /*
  ** Customize the progress-bar color
  */
  loading: { color: '#fff' },
  /*
  ** Global CSS
  */
  css: [
  ],
  /*
  ** Plugins to load before mounting the App
  */
  plugins: [
  ],
  /*
  ** Nuxt.js dev-modules
  */
  buildModules: [
  ],
  /*
  ** Nuxt.js modules
  */
  modules: [
  ],
  /*
  ** Build configuration
  */
  build: {
    babel: {
      presets(env, [ preset, { buildTarget } ]) {
        const envConfigs = {
          client: {
            targets: { chrome: "66" },
            exclude: [
              "@babel/plugin-transform-regenerator",
            //  "@babel/plugin-transform-runtime"
            ]
          },
          modern: {
            targets: { chrome: "66" },
            exclude: [
              "@babel/plugin-transform-regenerator",
            //  "@babel/plugin-transform-runtime"
            ]
          },
          server: {
            targets: { node: "current" }
          }
        }

         return [
           [
             "@nuxt/babel-preset-app",
             envConfigs[buildTarget]
           ]
         ]
       }
    },

    /*
    ** You can extend webpack config here
    */
    extend (config, ctx) {
    }
  }
}