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

By CodeSweetly and Oluwatobi Sofela

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 InsideConfigure a clean, scalable JavaScript projectDefine correct entry pointsModularize your JavaScript codebase for maintainabilityTest your package before and after publishingAutomate version management and release notes using semantic-releaseImplement NPM Trusted Publishing for secure, tokenless releasesCreate professional README and LICENSE filesPublish 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 BookClear, simplified explanations without unnecessary theoryReal-world workflows used by professional library authorsAutomation-first approach to eliminate manual release headachesIt focuses on the steps for building and publishing libraries, not just on JavaScript programming itself.
Who This Book Is ForJavaScript developers ready to publish reusable librariesOpen-source contributors aiming to adopt professional workflowsTeams 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.

• Format: Paperback
• Language: English
• ISBN: B0FRXLGPCZ
• ISBN13: 9798266183056
• Release Date: September 2025
• Publisher: Independently Published
• Length: 118 Pages
• Weight: 0.48 lbs.
• Dimensions: 0.3" x 7.0" x 10.0"