Book Image

Building Enterprise JavaScript Applications

By : Daniel Li
Book Image

Building Enterprise JavaScript Applications

By: Daniel Li

Overview of this book

With the over-abundance of tools in the JavaScript ecosystem, it's easy to feel lost. Build tools, package managers, loaders, bundlers, linters, compilers, transpilers, typecheckers - how do you make sense of it all? In this book, we will build a simple API and React application from scratch. We begin by setting up our development environment using Git, yarn, Babel, and ESLint. Then, we will use Express, Elasticsearch and JSON Web Tokens (JWTs) to build a stateless API service. For the front-end, we will use React, Redux, and Webpack. A central theme in the book is maintaining code quality. As such, we will enforce a Test-Driven Development (TDD) process using Selenium, Cucumber, Mocha, Sinon, and Istanbul. As we progress through the book, the focus will shift towards automation and infrastructure. You will learn to work with Continuous Integration (CI) servers like Jenkins, deploying services inside Docker containers, and run them on Kubernetes. By following this book, you would gain the skills needed to build robust, production-ready applications.
Table of Contents (26 chapters)
Title Page
Copyright and Credits
Packt Upsell
Free Chapter
The Importance of Good Code


At the start of this chapter, we looked at the difference between CommonJS and ES6 modules, and settled on using the new ES6 module syntax, which uses the import and export keywords.

Next, we installed Node on our machine using nvm, and got acquainted with the npm and yarn package managers. We then set up a simple HTTP server using the native http Node module. After that, we used Babel to transpile our ESNext code into a syntax supported by our local environment. We also set up nodemon to watch for changes in our code and restart the server whenever a change is detected. Lastly, we incorporated ESLint to spot problems in our code, and use a pre-commit Git hook to run the linter automatically before each commit.



In the next chapter, we will be following a test-driven development (TDD) approach to develop our API server, to provide functionalities for clients to create, read, update, and delete (CRUD) user objects on our database, using ElasticSearch as our data storage solution.