fromThrowable<A, B> function

FutureOr<B> fromThrowable<A, B>(FutureOr<A> f(), { required B onSuccess(A a), required B onError(dynamic error, StackTrace stackTrace), })

Implementation

FutureOr<B> fromThrowable<A, B>(
  FutureOr<A> Function() f, {
  required B Function(A a) onSuccess,
  required B Function(dynamic error, StackTrace stackTrace) onError,
}) {
  try {
    final a = f();
    if (a is Future) {
      return (a as Future<A>).then(onSuccess, onError: onError);
    }
    return onSuccess(a);
  } catch (err, stack) {
    return onError(err, stack);
  }
}