sp-dev-fx-webparts/samples/angular-yammer/.yo-rc.json

{
  "@microsoft/generator-sharepoint": {
    "libraryName": "angular-yammer",
    "framework": "none",
    "version": "1.0.0",
    "libraryId": "f3f740d2-5a08-4e10-8f7c-b64846dc4f23"
  }
}