import 'dart:async';

void main() {
  bar();
  baz();
}

Future<void> bar() async {
  try {
    // uncomment things and observe the output
//     await throwFoo();
//     await futureErrorFoo();
    await futureErrorExceptionFoo();
  } on Exception catch (e) {
    print('type: ${e.runtimeType} string: ${e.toString()}');
  } catch (e) {
    print('type: ${e.runtimeType} string: ${e.toString()}');
  }
}

void baz() {
  throwFoo().catchError((e) {
    print('type: ${e.runtimeType} string: ${e.toString()}');
  });
  futureErrorFoo().catchError((e) {
    print('type: ${e.runtimeType} string: ${e.toString()}');
  });
  futureErrorExceptionFoo().catchError((e) {
    print('type: ${e.runtimeType} string: ${e.toString()}');
  });
}

Future<void> throwFoo() async {
  throw Exception('foo exception');
}

Future<void> futureErrorFoo() async {
  return Future.error('test');
}

Future<void> futureErrorExceptionFoo() async {
  return Future.error(Exception('test'));
}