Answers for "add mongoose"

mongoose setup

// getting-started.js
const mongoose = require('mongoose');
mongoose.connect("mongodb://localhost:27017/name", { useUnifiedTopology: true, useNewUrlParser: true });

mongoose add document

const Product = require('../models/product.js');

const product = new Product();
product.save()
		.then(doc => {})
        .catch(err => {});