node_modules/workerpool/examples/embeddedWorker/package.json

{
  "dependencies": {},
  "devDependencies": {
    "btoa": "1.2.1",
    "webpack": "4.39.2",
    "webpack-cli": "3.3.7"
  },
  "scripts": {
    "build": "npm run build-embedded-worker && npm run build-app",
    "build-app": "npx webpack app.js -o dist/app.bundle.js --mode=production",
    "build-embedded-worker": "node createEmbeddedWorker.js"
  }
}