generator-nest-js-boilerplate/generators/prisma/templates/mongodb/oauth2/src/modules/v1/auth/auth.service.ts

This generator will help you to build your own Nest.js Mongodb API using TypeScript 4

import { Injectable } from '@nestjs/common';

import UsersService from '@v1/users/users.service';

@Injectable()
export default class AuthService {
  constructor(private readonly usersService: UsersService) {}
}