Singleton Macro

A Dart package that provides a Singleton macro to transform classes into singletons automatically. This package leverages Dart's macro system to enforce the singleton pattern on the annotated classes.

Features

• Automatic singleton implementation.
• Ensures a single instance of the class.
• Simplifies singleton pattern usage in Dart.

Installation

Add the following to your pubspec.yaml file:

dependencies:
  singleton_macro: ^0.0.2-dev.1

Usage

Annotate your class with @Singleton to make it a singleton:

// lib/main.dart
import 'package:singleton_macro/singleton_macro.dart';

@Singleton()
class MySingletonClass {
  String name = "foo";
}

void main() {
  final instance1 = MySingletonClass();
  print(instance1.name);  // Output: foo

  final instance2 = MySingletonClass();
  instance2.name = "bar";
  print(instance1.name);  // Output: bar

  print(identical(instance1, instance2));  // Output: true
}

Run

dart --enable-experiment=macros run lib/main.dart

Contributing

Contributions are welcome! Please submit pull requests or create issues for any improvements or bugs you find.

Github Repo

Sponsor

If you find this project helpful, consider sponsoring it on GitHub:

Github Sponsor

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Maintained by Manish Gautam

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