Overview

Building Your First npm Package" is a comprehensive, step-by-step tutorial designed for JavaScript developers who want to create and publish their own npm packages. In this 60-minute codelab, you'll build a practical string utility library that provides essential text manipulation functions including capitalization, truncation, and camelCase conversion. The tutorial guides you through the complete package development lifecycle, covering project initialization, creating a proper directory structure, implementing utility functions with good documentation practices, writing comprehensive tests with Jest, and preparing professional documentation. You'll learn how to test your package locally using npm link before publishing, and finally how to publish your package to the npm registry. By the end of this codelab, you'll have a fully functional, well-tested npm package available for anyone to use, along with the knowledge and confidence to develop more complex packages in the future. This tutorial is perfect for developers looking to share their code with the JavaScript community or understand how npm packages work from the inside.