$ npm install mongoose

// Using Node.js `require()`

const mongoose = require('mongoose');

​

// Using ES6 imports

import mongoose from 'mongoose';

await mongoose.connect('mongodb://localhost/my_database');

version: '3'

services:

rabbitmq:

    image: "rabbitmq:3-management"

    hostname: "rabbit"

    ports:

      - "15672:15672"

      - "5672:5672"

    labels:

      NAME: "rabbitmq"

    volumes:

      - ./rabbitmq-isolated.conf:/etc/rabbitmq/rabbitmq.config

const Comment = new Schema({

  name: { type: String, default: 'hahaha' },

  age: { type: Number, min: 18, index: true },

  bio: { type: String, match: /[a-z]/ },

  date: { type: Date, default: Date.now },

  buff: Buffer

});

​

// a setter

Comment.path('name').set(function(v) {

  return capitalize(v);

});

​

// middleware

Comment.pre('save', function(next) {

  notify(this.get('email'));

  next();

});