{
  "name": "vh1",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "npm": "^5.10.0",
    "react": "^16.5.0",
    "react-dom": "^16.5.0",
    "react-router-dom": "^4.3.1",
    "react-scripts": "^1.1.5"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "engines": {
    "node": "9.8.0",
    "npm": "5.7.1"
  }
}

{
  "name": "vh1",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "npm": "^5.10.0",
    "react": "^16.5.0",
    "react-dom": "^16.5.0",
    "react-router-dom": "^4.3.1",
    "react-scripts": "^1.1.5"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "engines": {
    "node": "10.10.0",
    "npm": "6.4.1"
  }
}

Upgrade node to 10.10.0 and npm to 6.4.1
Upgrade node to 10.10.0 and npm to 6.4.1
