import mongoose via node cli code example

Example 1: how to install mongoose

$ npm install mongoose

Example 2: mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/twitter', {
    useNewUrlParser: true,
    useUnifiedTopology: true
});

const db = mongoose.connection;

db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function () {
    console.log("Database Connected !!!");
});

module.exports = db;