pro-di v1.0.3

pro-di

A lightweight yet powerful dependency injection container for Node.js and TypeScript applications.

What is pro-di?

pro-di makes it easy to:

• Manage dependencies in your application
• Write cleaner, more maintainable code
• Test components in isolation

Key Features

✨ Simple Global Container One container to rule them all - easy setup with zero configuration

🎯 Smart Module System Group related dependencies using defineModule

🔧 Decorator Support Register dependencies effortlessly:

Getting Started

npm install pro-di
# or
pnpm add pro-di

Complete Example

Here's a comprehensive example showing how to use pro-di:

// Define interfaces
const IUserRepository = Symbol("IUserRepository");
const IAuthService = Symbol("IAuthService");

// implementations.js
class UserRepository {
  async findById(id) {
    return await db.users.findOne(id);
  }
}

class AuthService {
  constructor(userRepo) {
    this.userRepo = userRepo;
  }

  validateUser(user) {
    // Validation logic
    return true;
  }
}

// usage.js
const container = new Container();

// Register services
container.register(IUserRepository, UserRepository);
container.register(IAuthService, {
  useClass: AuthService,
  inject: [IUserRepository]
});

// Register module
container.registerModule({
  services: [
    { token: IUserRepository, useClass: UserRepository },
    { token: IAuthService, useClass: AuthService }
  ]
});

// Use services
const authService = container.resolve(IAuthService);
const isValid = authService.validateUser(someUser);

This example demonstrates:

• Interface definitions
• Service decorators
• Dependency injection
• Container setup
• Module registration
• Service resolution