sp-dev-fx-webparts/samples/react-jest-testing/.yo-rc.json

{
  "@microsoft/generator-sharepoint": {
    "version": "1.4.1",
    "libraryName": "react-jest-testing",
    "libraryId": "9e16e13b-8d8c-4b89-8de4-dd654c5b6740",
    "environment": "spo"
  }
}