[Question] Should the IPlayFabResultCommon interface extend the IPlayFabError interface?

[marcjordan]

When stubbing out the PlayFab SDK for testing, the callback type needs an object that conforms to this interface:

    export interface IPlayFabSuccessContainer<TResult extends IPlayFabResultCommon> extends IPlayFabError {
        data: TResult;
    }

but IPlayFabResultCommon also extends IPlayFabError. So while I think I should be able to use an object that looks like this:

{
  code: 200,
  status: 'OK',
  error: '',
  errorCode: 0,
  errorMessage: ''
  data: {
    Data: {}
  }
}

I'm having to build an object that looks like this in order to get Typescript to allow it as a parameter to the ApiCallback function:

{
  code: 200,
  status: 'OK',
  error: '',
  errorCode: 0,
  errorMessage: ''
  data: {
    code: 200,
    status: 'OK'
    error: '',
    errorCode: 0,
    errorMessage: '',
    Data: {}
  }
}

Also, shouldn't the error, errorCode, and errorMessage properties be optional? Those are not returned when the call is successful.