SamanShafigh

// We can also use async/await which is a Syntactic Sugar For Promises
var addC = function (a, b) {
  return new Promise((resolve, reject) => {
    setTimeout (() => { 
      resolve(a + b); 
    }, 0);
  });
};

SamanShafigh

import {MongoClient} from 'mongodb';
import UserController from './controller/user-controller';
import UserService from './service/user-service'
import MongoDriver from './service/db-service';
import Config from './service/config-service';

export const config = {
  constructor: () => new Config(process.env),
  tags: ['boot']
}

SamanShafigh

import Container from './container';

export default class Kernel { 
  constructor(builder) {
    this.container = new Container(builder);
  }

  /**
   * Boot the kernel, load all services
   */

SamanShafigh

export default class Container {
  constructor(builder) {
    this.services = new Map();
    if (builder !== undefined) {
      Object.keys(builder).forEach(name => this.register(name, builder[name]));
    }
  }

  /**
   * Register a service

SamanShafigh

import Kernel from './kernel';
import * as ServiceBuilder from './service';

(async () => {
  const kernel = new Kernel(ServiceBuilder);
  await kernel.boot();
  
  await kernel.container.get('db').save('product', {}, {id: 1, name: 'ssssscar'});  
})();