Andrey Shock

const consola = require('consola')
const { Nuxt, Builder } = require('nuxt')
const app = require('./app')

// Import and Set Nuxt.js options
const config = require('../nuxt.config.js')
config.dev = process.env.NODE_ENV !== 'production'

async function start () {
  // Init Nuxt.js
  const nuxt = new Nuxt(config)

  const { host, port } = nuxt.options.server

  await nuxt.ready()
  // Build only in dev mode
  if (config.dev) {
    const builder = new Builder(nuxt)
    await builder.build()
  }

  // Give nuxt middleware to express
  app.use(nuxt.render)

  // Listen the server
  app.listen(port, host, () => {
		consola.ready({
			message: `Server listening on http://${host}:${port}`,
			badge: true
		})
	})
}
start()

const express = require('express')
const app = express()

module.exports = app

serverMiddleware: {
    '/api': '~/api'
  },

const express = require('express')

// Create express instance
const app = express()

app.get('/', (req, res) => res.status(200).json([{name: "Robert"}, {name: "John"}]))

// Export express app
module.exports = app

// Start standalone server if directly running
if (require.main === module) {
  const port = process.env.PORT || 3001
  app.listen(port, () => {
    console.log(`API server listening on port ${port}`)
  })
}

<template lang="pug">
  div
    p(v-for="user in users") {{ user.name }}
</template>
<script>
export default {
  async asyncData({ $axios }) {
    const users = await $axios.$get('/api/')

    return {
      users,
    }
  },
}
</script>