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

{
  "solution": {
    "name": "react-pagecontributors-client-side-solution",
    "id": "1c18830a-4c18-4b82-a571-77863b19c66d",
    "version": "1.0.0.0"
  },
  "paths": {
    "zippedPackage": "solution/react-pagecontributors.sppkg"
  }
}