next.js/examples/custom-server-polka/package.json

{
  "name": "custom-server-polka",
  "version": "1.0.0",
  "scripts": {
    "dev": "node server.js",
    "build": "next build",
    "start": "NODE_ENV=production node server.js"
  },
  "dependencies": {
    "next": "latest",
    "polka": "0.2.3",
    "react": "16.2.0",
    "react-dom": "16.2.0"
  }
}