refactor: expose BlocListenerSingleChildWidget

[PlugFox]

Right now package export

class MultiBlocListener extends MultiProvider {
  MultiBlocListener({
    required List<BlocListenerSingleChildWidget> listeners,
    ...
  });
}

but doesn't expose BlocListenerSingleChildWidget interface

[felangel]

Hi @PlugFox 👋
Thanks for opening an issue!

Can you provide more context regarding why you want that interface exposed? BlocListener applies it as a mixin so if you want to type your list of listeners you can use BlocListener.

[PlugFox]

@felangel, of course, I know.
But you should use BlocListener as generic or expose BlocListenerSingleChildWidget or create and export new interface (abstract class or mixin), which will be common to them.

You can't use classes as an external API without exporting the classes themselves.

[felangel]

@felangel, of course, I know. But you should use BlocListener as generic or expose BlocListenerSingleChildWidget or create and export new interface (abstract class or mixin), which will be common to them.

You can't use classes as an external API without exporting the classes themselves.

What’s your use case for needing the interface? It was just added to work around a bug in Dart (will double check if it’s still need shortly).