import 'notifier.dart';

/// Minimal stand-ins for the `provider` package, so the fixture needs no
/// dependency.
class BuildContext {}

extension BuildContextX on BuildContext {
  T read<T>() => throw UnimplementedError();

  T watch<T>() => throw UnimplementedError();
}

class Provider<T> {
  const Provider() : value = null;

  const Provider.value({this.value});

  final T? value;

  static T of<T>(BuildContext context, {bool listen = true}) =>
      throw UnimplementedError();
}

class ChangeNotifierProvider<T extends ChangeNotifier> {
  const ChangeNotifierProvider({required this.create}) : value = null;

  const ChangeNotifierProvider.value({required this.value}) : create = null;

  final T Function(BuildContext context)? create;
  final T? value;
}

/// An immutable service. Reading it without subscribing is correct, so a rule
/// that flags every `context.read` in build is wrong.
class AppConfig {
  const AppConfig();
}