GetIt - get null implementation

get_it_null_impl.dart

//Possible solution for https://stackoverflow.com/questions/77187279/is-it-possible-to-provide-a-null-implementation-when-registering-something-on-fl/77187634#77187634

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:get_it/get_it.dart';

class OurOwnInterface {}

void main() {
  if (kDebugMode) {
    GetIt.I.registerSingleton<OurOwnInterface>(OurOwnInterface());
  }
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    OurOwnInterface? appModel = GetIt.I.getOrNull();
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Hello World! ${appModel.runtimeType}'),
        ),
      ),
    );
  }
}

extension GetItExtension on GetIt {
  T? getOrNull<T extends Object>() {
    try {
      return GetIt.I.get<T>();
    } on StateError catch (_) {
      return null;
    }
  }
}