Creating NPM Package: Build, Test, and Publish Vanilla JavaScript Libraries Like a Pro

Updated for 2026 Do you want to publish high-quality JavaScript packages to NPM without struggling with complicated setups or unreliable release scripts? Creating NPM Package is a hands-on, step-by-step guide that walks you through every stage of building a modern JavaScript library, from setting up your project to automating production releases. This new edition includes the latest best practices, such as using semantic-release for automated versioning and release notes, setting up secure NPM Trusted Publishing, and a ... Read More

Updated for 2026 Do you want to publish high-quality JavaScript packages to NPM without struggling with complicated setups or unreliable release scripts? Creating NPM Package is a hands-on, step-by-step guide that walks you through every stage of building a modern JavaScript library, from setting up your project to automating production releases. This new edition includes the latest best practices, such as using semantic-release for automated versioning and release notes, setting up secure NPM Trusted Publishing, and a new chapter on making your JavaScript codebase more modular and scalable. If you've ever asked yourself questions like these: How should I structure my JavaScript library? How do I automate versioning and changelogs without manual work? How do I securely publish using modern CI workflows? How do I scale my library beyond a single file? This book gives you clear, practical answers to all of these questions. What You'll Learn Inside Configure a clean, scalable JavaScript project Define correct entry points Modularize your JavaScript codebase for maintainability Test your package before and after publishing Automate version management and release notes using semantic-release Implement NPM Trusted Publishing for secure, tokenless releases Create professional README and LICENSE files Publish and validate your package in both local and production environments This book is more than just a tutorial. It gives you a repeatable system you can use for different projects. Why Choose This Book Clear, simplified explanations without unnecessary theory Real-world workflows used by professional library authors Automation-first approach to eliminate manual release headaches It focuses on the steps for building and publishing libraries, not just on JavaScript programming itself. Who This Book Is For JavaScript developers ready to publish reusable libraries Open-source contributors aiming to adopt professional workflows Teams requiring consistent and maintainable package configurations Whether you're publishing your first open-source project or improving a professional release process, this book will help you deliver clean, automated JavaScript libraries without extra complexity. Start building smarter today. Start publishing like a pro. Read Less