Backend JavaScript

Concepts

In this project, we will focus on the following concepts:

• Modern JavaScript
• Software Linter

Learning Objectives

By the end of this project, you should be able to explain the following topics without relying on external resources:

• What is ES6 (ECMAScript 2015)
• New features introduced in ES6
• The difference between a constant and a variable
• Block-scoped variables
• Arrow functions and default function parameters
• Rest and spread function parameters
• String templating in ES6
• Object creation and properties in ES6
• Iterators and for-of loops

Requirements

General

• All files will be executed on Ubuntu 18.04 LTS using NodeJS 12.11.x
• Allowed editors: vi, vim, emacs, Visual Studio Code
• All files should end with a new line
• A README.md file, located at the root of the project folder, is mandatory
• Your code should use the .js extension
• Your code will be tested using the Jest Testing Framework
• Your code will be analyzed using the ESLint linter with specific rules provided

Setup To set up your development environment, please follow these steps:

1. Install NodeJS 12.11.x by running the following commands in your home directory:

curl -sL https://deb.nodesource.com/setup_12.x -o nodesource_setup.sh
sudo bash nodesource_setup.sh
sudo apt install nodejs -y

2. Confirm that NodeJS and npm (Node Package Manager) are successfully installed:

$ nodejs -v
v12.11.1
$ npm -v
6.11.3

3. Install the required dependencies for the project by running the following commands in your project directory:

npm install --save-dev jest
npm install --save-dev babel-jest @babel/core @babel/preset-env
npm install --save-dev eslint

Configuration Files

The project includes the following configuration files:

• package.json: Contains the project dependencies and scripts.
• babel.config.js: Configuration file for Babel.
• .eslintrc.js: Configuration file for ESLint. Make sure to run npm install from the terminal in your project folder to install all the necessary project dependencies.