Node Ecosystem, TDD, CI/CD

Overview

Application development in the Node.js ecosystem, including the writing of modular code using CommonJS modules, writing tests to assert code quality, setting up and working in a “Continuous Integration” environment (Github Actions).

Class Outline

• Kick-off and Introductions
• Course Overview
• Setup Questions

Learning Objectives

Students will be able to

Describe and Define

• Node and the V8 Engine

Execute

• Setup a Node.js Package using npm
• Create CommonJS modules
• Create a simple express server
• See passing tests via CI using GitHub actions (Continuous Integration)
• Deploy to the cloud using CD (Continuous Deployment)

Notes

Importing and Exporting Modules

If one module exports a function or an object …

// person.js
const person = {};

person.walk = function() {
  return 'walking';
}

module.exports = person;

Another module can import and use that function or object

const human = require('./person.js'))
console.log( human.walk() );  // prints 'walking'

CI/CD - Continuous Integration and Deployment

In your lab today, you’ll be doing a full “professional” deployment using 2 branches, PR’s, and a continuous process to get your code deployed.

You will repeat this process for every server based lab moving forward. Keep these notes (and the lab steps) handy for future reference