jupyterlab/packages/services/examples/node/package.json

{
  "name": "node-example",
  "version": "3.4.3",
  "private": true,
  "scripts": {
    "clean": "rimraf node_modules",
    "update": "rimraf node_modules/@jupyterlab/services && npm install"
  },
  "dependencies": {
    "@jupyterlab/services": "^6.4.3",
    "node-fetch": "^2.6.0",
    "ws": "^7.4.6"
  },
  "devDependencies": {
    "rimraf": "~3.0.0"
  }
}