Node

[newswim]

Core concepts

How do modules work?

• This article explains that pretty well - https://www.sitepoint.com/understanding-module-exports-exports-node-js

basically, exports is an object which you can attach properties/methods to, just like any other object.. but the require function will parse a file and bind a matching keyword to a variable.

// lib.js

function sayHi () { return 'Hi' }

exports.sayHi = sayHi

// or..

exports.sayHi = function () { return 'Hi' }

// main.js
const sayHi = require('./lib').sayHi

You're simply accessing that property on the global object, module.exports (or exports, which its aliased to.)

NPM / Using Community Modules and Publishing To NPM

CLI

Processes

Asynchronous functions

• Promises
• Callbacks
• Async/Await
• Generators
• Fibers/Coroutines

Node Debugger

Core modules (assert, crypto, http, event emitters)