It's not obvious that shadcn-ui is for React.

[garyross]

Here's what the front page says:

Beautifully designed components that you can copy and paste into your apps. Made with Tailwind CSS. Open source.

On first glance, it is a 'Tailwind CSS' library and thus you would expect to be able to copy and paste the components into any app. Perhaps better:

Beautifully designed components styled with Tailwind CSS. Copy and paste components into your React apps. Open source

My understanding is that it is built on top of Radix UI: "Unstyled, accessible, open source React primitives for high-quality web apps and design systems."

This may seem obvious to users but it's not obvious for new visitors.