DependyDependency Injection for Dart & Flutter

Lightweight, modular dependency injection. Define providers, compose modules, and let Dependy wire it all together.

🔧

Easy to Use

Lightweight and straightforward API. Define providers, create modules, and resolve dependencies in just a few lines of code.

📦

Modular by Design

Compose independent modules, nest scopes, and combine them freely. Keep your architecture clean as your app grows.

⚡

Powered by Dart

Built with Dart's type system and async features. Full type safety, no code generation, and no reflection required.

📱

Flutter Ready

First-class Flutter support with scoped providers, widget mixins, and reactive rebuilds out of the box.

Simple by Design

Provider-based DI with lazy resolution
Composable modules and nested scopes
Singleton, transient, and scoped lifetimes
Tagged instances, decorators, and reset
Override providers for testing
Debug graph for inspecting the dependency tree
First-class Flutter integration

dart

import 'package:dependy/dependy.dart';

final module = DependyModule(
  providers: {
    DependyProvider<CounterService>(
      (_) => CounterService(),
    ),
  },
);

final counter = await module<CounterService>();
counter.increment();
print(counter.count); // 1