Type switch case

main.dart

void main() {
  final Object something = TypeA();
  
  something.matchTypes({
    TypeA : () => print("found A"),
    TypeB : () => print("found B"),
  });
  
}

extension Ext<ANY> on ANY {
  
  void matchTypes<T>(Map<Object, void Function()> map) {
    final key = map.keys.firstWhere((it) => it is T, orElse: () => null);
    if(key == null) {
      throw "No match found for type $T";
    }
    map[key].call();
  }
}


class TypeA {
  String name;
}

class TypeB {
  String age;
}