NuxtJS Server Middleware Proxy Passthrough

index.js

// lives at /api/index.js
const httpProxy = require('http-proxy')
const proxy = httpProxy.createProxyServer()
const API = process.env.API_URL || 'http://localhost:8080/v1alpha1/graphql'

export default function(req, res, next) {
  proxy.web(req, res, {
    target: API
  })
}

nuxt.config.js

// remainder of code left out
serverMiddleware: [
  {
    path: 'api',
    handler: '~/api/index.js'
  }
],