Shadcnui

shadcn/ui

shadcn/ui is not a component library; it's a collection of reusable components that you copy and paste into your apps. Built on Radix UI and Tailwind.

When to Use

• Ownership: You want full control over the component code.
• Next.js: The de facto standard for modern Next.js apps.
• Modern: The "Vercel Aesthetic".

Core Concepts

Copy/Paste

npx shadcn-ui@latest add button. This adds components/ui/button.tsx to YOUR project.

Radix UI

The headless, accessible primitives (Dialog, Tooltip) that power the interactions.

cn Utility

A helper to merge Tailwind classes conditionally (clsx + tailwind-merge).

Best Practices (2025)

Do:

• Customize: Edit the component code! That's the point.
• Use lucide-react: The standard icon set.
• Use Blocks: Copy larger blocks (Login Forms, Dashboards) from the registry.

Don't:

• Don't treat it like MUI: There is no npm package to update. You own the code.

References

• shadcn/ui Documentation

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