mapAsync method

@override @visibleForTesting Async<T> mapAsync(@noFutures Async<T> noFutures(Async<T> async))

Transforms the inner Async instance if this is an Async.

Provided for pair-axis symmetry with Result.mapOk/Result.mapErr — real code almost always wants resultMap, fold, or foldResult instead.

Implementation

@override
@visibleForTesting
@pragma('vm:prefer-inline')
Async<T> mapAsync(@noFutures Async<T> Function(Async<T> async) noFutures) {
  try {
    return noFutures(this);
  } on Err catch (err) {
    return Async.err(err.transfErr<T>());
  } catch (error, stackTrace) {
    return Async.err(Err<T>(error, stackTrace: stackTrace));
  }
}