Dependency Injection

Nubie provides a structured approach to Dependency Injection (DI) using tsyringe under the hood.

Registering Services

With Nubie, you can assign service via addServices method

Nubie.createApp().addServices([InfrastructureDi, ApplicationDi]).runAsync();

Defining Services

Create a class that will tell Nubie to register dependencies.

// application/DependencyInjection.ts
import { IServiceCollection } from "nubie";

export class ApllicationDi {
  constructor(serviceCollection: IServiceCollection) {
    serviceCollection.addScoped("IAuthService", AuthService);
    // serviceCollection.addSingelton("IAuthService", AuthService);
    // serviceCollection.addTransient("IAuthService", AuthService);
  }
}

Injection

Use the @Inject decorator to request dependencies in your controller / other classes constructors. Nubie automatically resolves these dependencies at runtime.

import { ApiController, HttpGet, HttpResponse } from "nubie";
import { Inject } from "nubie";

@ApiController()
class AuthenticationController {
  private readonly _authService: IAuthService;

  constructor(@Inject("IAuthService") authService: IAuthService) {
    this._authService = authService;
  }
}