{
  "scripts": {
    "build": "npm-run-all --parallel 'build:*' --serial start",
    "build:css": "echo 'build css' && sleep 1",
    "build:js": "echo 'build js' && sleep 2",
    "start": "echo 'start http server'"
  },
  "dependencies": {
    "npm-run-all": "^4.0.1"
  }
}