mapErrAsync<F extends Object> method

Future<TaskResult<T, F>> mapErrAsync<F extends Object>(FutureOr<F> op(E error))

This is the async version of mapOrElse.

Implementation

Future<TaskResult<T, F>> mapErrAsync<F extends Object>(FutureOr<F> Function(E error) op) async {
  if (isErr) {
    return Err(await op(error!));
  }
  return Ok(data!);
}