sp-dev-fx-webparts/samples/react-invitation-manager/config/package-solution.json

{
  "solution": {
    "name": "react-invitation-manager-client-side-solution",
    "id": "7d08f6e8-b222-4ed7-8910-8ea911d117fe",
    "version": "1.0.1.0"
  },
  "paths": {
    "zippedPackage": "solution/react-invitation-manager.sppkg"
  }
}