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Component Library

A reusable, documented set of UI building blocks that keep a product visually and behaviorally consistent across teams.

What Is a Component Library?

A component library is a curated collection of reusable interface elements — buttons, forms, cards, navigation, and more — built once and shared across an application or organization. Each component encapsulates its markup, styling, and behavior so teams assemble screens from consistent, tested pieces instead of rebuilding them.

Paired with a design system, a component library speeds development, enforces accessibility and brand consistency, and makes large front-end codebases far easier to maintain as they grow.

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Component Library