import 'reflect-metadata';
import { container, inject, injectable, singleton } from 'tsyringe';

@singleton()
class DependencyA {
  action() {
    console.log('Dependency A > action() > _c1: ');
  }
}

@injectable()
@singleton()
class BusinessLogic {
  constructor(private _dependencyA: DependencyA) {}

  foo() {
    this._dependencyA.action();
  }
}

@injectable()
class BusinessLogicInjected {
  constructor(
    public prop1: string,
    private _BusinessLogic?: BusinessLogic,
  ) {}

  foo() {
    console.log('prop1: ', this.prop1);
    this._BusinessLogic?.foo();
  }
}

const _BusinessLogicInjected = container.resolve(BusinessLogicInjected);
_BusinessLogicInjected.foo();