Rocket.Chat/server/services/startup.ts

import { MongoInternals } from 'meteor/mongo';

import { api } from '../sdk/api';
import { Authorization } from './authorization/service';
import { MeteorService } from './meteor/service';

api.registerService(new Authorization(MongoInternals.defaultRemoteCollectionDriver().mongo.db));
api.registerService(new MeteorService());