generator-nest-js-boilerplate/generators/auth/templates/postgresql/jwt/src/modules/v1/roles/roles.service.ts

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

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

import RolesRepository from '@v1/roles/roles.repository';
import { RolesEnum } from '@decorators/roles.decorator';

@Injectable()
export default class RolesService {
  constructor(private readonly rolesRepository: RolesRepository) {}

  getByName(name: RolesEnum) {
    return this.rolesRepository.getByName(name);
  }
}