rsnext/examples/with-firebase-hosting/app/package.json

{
  "name": "app",
  "version": "1.0.0",
  "dependencies": {
    "next": "beta",
    "react": "^15.6.1",
    "react-dom": "^15.6.1"
  },
  "scripts": {
    "dev": "next",
    "build": "next build"
  }
}