sp-dev-fx-webparts/samples/react-project-online/.yo-rc.json

{
  "@microsoft/generator-sharepoint": {
    "version": "1.4.0",
    "libraryName": "react-project-online",
    "libraryId": "d6729fd9-103c-42c8-8ee5-17760e4ab92f",
    "environment": "spo"
  }
}