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

{
  "@microsoft/generator-sharepoint": {
    "version": "1.3.1",
    "libraryName": "react-youtube",
    "libraryId": "ca0fd050-e358-4093-93cd-bc3d74e131e5",
    "environment": "spo"
  }
}