Book Image

JavaScript Design Patterns

By : Hugo Di Francesco
Book Image

JavaScript Design Patterns

By: Hugo Di Francesco

Overview of this book

Unlock the potential of JavaScript design patterns, the foundation for development teams seeking structured and reusable solutions to common software development challenges in this guide to improving code maintainability, scalability, and performance. Discover how these patterns equip businesses with cleaner and more maintainable code, promote team collaboration, reduce errors, and save time and costs. This book provides a comprehensive view of design patterns in modern (ES6+) JavaScript with real-world examples of their deployment in professional settings. You’ll start by learning how to use creational, structural, and behavioral design patterns in idiomatic JavaScript, and then shift focus to the architecture and UI patterns. Here, you’ll learn how to apply patterns for libraries such as React and extend them further to general web frontend and micro frontend approaches. The last section of the book introduces and illustrates sets of performance and security patterns, including messaging and events, asset and JavaScript loading strategies, and asynchronous programming performance patterns. Throughout the book, examples featuring React and Next.js, in addition to JavaScript and Web API examples, will help you choose and implement proven design patterns across diverse web ecosystems, transforming the way you approach development.
Table of Contents (16 chapters)
Part 1:Design Patterns
Part 2:Architecture and UI Patterns
Part 3:Performance and Security Patterns

Automatic static generation

In Next.js, the filesystem-based routing means that each path in your web application corresponds to a file in the pages directory of your application. For example, / corresponds to pages/index.js.

Next.js defaults to static generation when no Next.js data fetching methods are used for a given page. You can find more information from the Next.js documentation – Automatic Static Optimization (

Next.js automatically determines that a page is static (i.e., can be prerendered) if it has no blocking data requirements. This determination is made by the absence of getServerSideProps and getInitialProps on the page.

For example, the following page in a Next.js application will be statically generated, since it only exports a page component (the default export of Index); no getServerSideProps or getInitialProps function is exported:

import React from...