talyssonoc

import api from './infra/api'; // has no dependencies
import { validateUser } from './domain/user'; // has no dependencies
import makeUserRepository from './infra/user/userRepository';
import makeArticleRepository from './infra/article/articleRepository';
import makeCreateUser from './app/user/createUser';
import makeGetArticle from './app/article/getArticle';

const userRepository = makeUserRepository({
  api
});

talyssonoc

class SequelizeUsersRepository {
  add(user) {
    const { valid, errors } = user.validate();

    if(!valid) {
      const error = new Error('ValidationError');
      error.details = errors;

      return Promise.reject(error);
    }

talyssonoc

const UsersController = {
  create(req, res) { 
    const createUser = new CreateUser({ usersRepository });

    createUser
      .on('SUCCESS', (user) => {
        res.status(201).json(user);
      })
      .on('VALIDATION_ERROR', (error) => {
        res.status(400).json({

talyssonoc

const EventEmitter = require('events');

class CreateUser extends EventEmitter {
  constructor({ usersRepository }) {
    super();
    this.usersRepository = usersRepository;
  }

  execute(userData) {
    const user = new User(userData);

talyssonoc

const { attributes } = require('structure');

const User = attributes({
  id: Number,
  name: {
    type: String,
    required: true
  },
  age: Number
})(class User {