Files
zeekay 05fc512820 feat: sync upstream shadcn/ui — [email protected], v4 app, font system, chart improvements
Upstream sync from shadcn-ui/ui (1686 commits since last merge base).

Key changes:
- packages/shadcn upgraded to 4.1.0 (CLI font transformers, scaffold from github, chart colors)
- apps/v4 replaces apps/www as the primary docs/registry app
- Font system: 25+ heading font registries, font markers utility, @supports override
- Chart improvements: recharts v3 compat, radial chart fixes
- templates/ updated with monorepo variants (astro, vite, react-router, start)
- skills/shadcn AI skill definitions added
- deprecated/ removed (auth, auth-firebase, cli, www)

Preserved Hanzo-only paths: app/, pkg/, demo/, docs/, template/next/
2026-03-24 19:04:31 -07:00

67 lines
1.4 KiB
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---
title: Next.js
description: Adding dark mode to your Next.js app.
---
<Steps>
## Install next-themes
Start by installing `next-themes`:
```bash
npm install next-themes
```
## Create a theme provider
```tsx title="components/theme-provider.tsx" showLineNumbers
"use client"
import * as React from "react"
import { ThemeProvider as NextThemesProvider } from "next-themes"
export function ThemeProvider({
children,
...props
}: React.ComponentProps<typeof NextThemesProvider>) {
return <NextThemesProvider {...props}>{children}</NextThemesProvider>
}
```
## Wrap your root layout
Add the `ThemeProvider` to your root layout and add the `suppressHydrationWarning` prop to the `html` tag.
```tsx {1,6,9-14,16} title="app/layout.tsx" showLineNumbers
import { ThemeProvider } from "@/components/theme-provider"
export default function RootLayout({ children }: RootLayoutProps) {
return (
<>
<html lang="en" suppressHydrationWarning>
<head />
<body>
<ThemeProvider
attribute="class"
defaultTheme="system"
enableSystem
disableTransitionOnChange
>
{children}
</ThemeProvider>
</body>
</html>
</>
)
}
```
## Add a mode toggle
Place a mode toggle on your site to toggle between light and dark mode.
<ComponentPreview name="mode-toggle" className="[&_.preview]:items-start" />
</Steps>