How to Build a Component Library
Create a reusable React component library with TypeScript, Storybook documentation, and automated testing.
What You'll Learn
This intermediate-level guide walks you through how to build a component library step by step. Estimated time: 14 min.
Step 1: Set up the project
Initialize a component library project with TypeScript, proper build configuration, and package management for publishing.
Step 2: Build core components
Create Button, Input, Select, Modal, Table, and Card components with consistent API patterns and comprehensive prop types.
Step 3: Add Storybook documentation
Configure Storybook with stories for every component state, interactive controls, and usage documentation.
Step 4: Implement visual testing
Set up Chromatic or Percy for visual regression testing that catches unintended UI changes automatically.
Step 5: Publish and version
Configure package publishing with semantic versioning, changelogs, and automated releases through your CI pipeline.
Frequently Asked Questions
Should I build my own component library?▾
Build on top of an unstyled library like Radix UI or Headless UI for accessibility. Add your own styling layer. Only build fully custom for unique interaction patterns.
How do I handle theming?▾
Use CSS custom properties or a theme provider pattern for runtime theming. Design tokens in JSON format enable multi-platform consistency.
How do I version components?▾
Use semantic versioning. Breaking API changes require major version bumps. New features are minor versions. Bug fixes are patches. Document migration guides for breaking changes.