{
  ...
  "scripts": {
    "monaca:preview": "npm run build && npm run dev",
    "monaca:transpile": "npm run build",
    "build": "workbox injectManifest workbox-config.js",
    "dev": "browser-sync start -s www/ --watch --port 8080 --ui-port 8081"
  },
  ...
}