[SOLVED] How to initialise a class constructor using inversify which has other dependency

How to initialise a class constructor using inversify which has other dependency

config.ts

export const bindings = new AsyncContainerModule(async (bind) => {
  await getDbConnection();
  await AppSubscribers;
  await Locators;
  await RouterClass;

  bind<AppSubscribers>(TYPES.AppSubscribers).to(AppSubscribers);
  bind<Locators>(TYPES.Locators).to(Locators);
  bind<IRepository>(TYPES.IRepository).to(Repository);

locator.ts

import { inject, injectable } from 'inversify';
import TYPES from '@shared/di/types/types';
import Locator from '../.Locators';
import { AfterTypeCreated } from './AfterTypeCreated';
import { logger } from '@shared/core/logger/logger';
export class AppSubscribers {
  constructor(
    @inject(TYPES.Locators)
    private locators: Locators
  ) {
    logger.info('SUBSCRIBER STARTED');
    new AfterDataCreated(this._locators);
  }
}

AppSubscriber needs to inject Locators which further injects Repo and other services.

I need to initialise app subscriber at the start of the application to add all the subscribers (observers) to the registry.

Solution

You probably need to use toDynamicValue, toFactory or toProvider. This is an example of toDynamicValue:

container.bind<AppSubscribers>(TYPES.AppSubscribers).toDynamicValue((context) => {
    const locators = context.container.get(TYPES.Locators)
    const appSubscribers = new AppSubscribers();
    appSubscribers.initialize(); // Do something then call AfterDataCreated
    return appSubscribers;
}).inSingletonScope();

Take a look to the docs if this is not the perfect solution for you: