server.es6.js

import express from 'express'
import next from 'next'
import routes from './routes'

const devProxy = {
  '/api': {
    target: process.env.ANCHORE_CLI_URL,
    pathRewrite: {'^/api': '/'},
    changeOrigin: true
  }
}

const port = parseInt(process.env.PORT, 10) || 3000
const env = process.env.NODE_ENV
const dev = env !== 'production'
const app = next({
  dir: '.', // base directory where everything is, could move to src later
  dev
})

const handle = routes.getRequestHandler(app)

let server
app
  .prepare()
  .then(() => {
    server = express()

    // Set up the proxy.
    if (dev && devProxy) {
      const proxyMiddleware = require('http-proxy-middleware')
      Object.keys(devProxy).forEach(function (context) {
        server.use(proxyMiddleware(context, devProxy[context]))
      })
    }

    // Default catch-all handler to allow Next.js to handle all other routes
    server.all('*', (req, res) => handle(req, res))

    server.listen(port, err => {
      if (err) {
        throw err
      }
      console.log(`> Ready on port ${port} [${env}]`)
    })
  })
  .catch(err => {
    console.log('An error occurred, unable to start the server')
    console.log(err)
  })