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|
---
description: Configure dark mode for your framework
argument-hint: "[framework]"
allowed-tools: Read, Write, Edit, Bash
---
Set up dark mode with theme switching for your specific framework.
## Instructions
Based on the framework detected or specified:
1. Install required dependencies
2. Set up theme provider
3. Configure CSS variables
4. Create theme toggle component
5. Set up persistence (cookies/localStorage)
## Framework Configurations
### Next.js (App Router)
```bash
npm install next-themes
```
Create `components/theme-provider.tsx`:
```tsx
"use client"
import * as React from "react"
import { ThemeProvider as NextThemesProvider } from "next-themes"
import { type ThemeProviderProps } from "next-themes/dist/types"
export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
return <NextThemesProvider {...props}>{children}</NextThemesProvider>
}
```
Wrap in `app/layout.tsx`:
```tsx
<ThemeProvider
attribute="class"
defaultTheme="system"
enableSystem
disableTransitionOnChange
>
{children}
</ThemeProvider>
```
### Vite
Create `components/theme-provider.tsx`:
```tsx
import { createContext, useContext, useEffect, useState } from "react"
type Theme = "dark" | "light" | "system"
const ThemeProviderContext = createContext<{
theme: Theme
setTheme: (theme: Theme) => void
}>({
theme: "system",
setTheme: () => null,
})
export function ThemeProvider({ children }: { children: React.ReactNode }) {
const [theme, setTheme] = useState<Theme>(
() => (localStorage.getItem("theme") as Theme) || "system"
)
useEffect(() => {
const root = window.document.documentElement
root.classList.remove("light", "dark")
if (theme === "system") {
const systemTheme = window.matchMedia("(prefers-color-scheme: dark)")
.matches
? "dark"
: "light"
root.classList.add(systemTheme)
return
}
root.classList.add(theme)
}, [theme])
const value = {
theme,
setTheme: (theme: Theme) => {
localStorage.setItem("theme", theme)
setTheme(theme)
},
}
return (
<ThemeProviderContext.Provider value={value}>
{children}
</ThemeProviderContext.Provider>
)
}
export const useTheme = () => {
const context = useContext(ThemeProviderContext)
if (context === undefined)
throw new Error("useTheme must be used within a ThemeProvider")
return context
}
```
### Remix
```bash
npm install remix-themes
```
In `app/root.tsx`:
```tsx
import { themeSessionResolver } from "remix-themes"
import {
PreventFlashOnWrongTheme,
ThemeProvider,
useTheme,
} from "remix-themes"
export async function loader({ request }: LoaderFunctionArgs) {
const { getTheme } = await themeSessionResolver(request)
return { theme: getTheme() }
}
export default function App() {
const data = useLoaderData<typeof loader>()
const [theme] = useTheme()
return (
<html lang="en" className={theme ?? ""}>
<head>
<PreventFlashOnWrongTheme ssrTheme={Boolean(data.theme)} />
</head>
<body>
<ThemeProvider
specifiedTheme={data.theme}
themeAction="/action/set-theme"
>
<Outlet />
</ThemeProvider>
</body>
</html>
)
}
```
### Astro
In layout file:
```astro
<script is:inline>
const theme = (() => {
if (typeof localStorage !== 'undefined' && localStorage.getItem('theme')) {
return localStorage.getItem('theme')
}
if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
return 'dark'
}
return 'light'
})()
if (theme === 'light') {
document.documentElement.classList.remove('dark')
} else {
document.documentElement.classList.add('dark')
}
window.localStorage.setItem('theme', theme)
</script>
```
## Theme Toggle Component
Create `components/theme-toggle.tsx`:
```tsx
import { Moon, Sun } from "lucide-react"
import { Button } from "@/components/ui/button"
import {
DropdownMenu,
DropdownMenuContent,
DropdownMenuItem,
DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"
import { useTheme } from "@/components/theme-provider" // or "next-themes"
export function ThemeToggle() {
const { setTheme } = useTheme()
return (
<DropdownMenu>
<DropdownMenuTrigger asChild>
<Button variant="outline" size="icon">
<Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
<Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
<span className="sr-only">Toggle theme</span>
</Button>
</DropdownMenuTrigger>
<DropdownMenuContent align="end">
<DropdownMenuItem onClick={() => setTheme("light")}>
Light
</DropdownMenuItem>
<DropdownMenuItem onClick={() => setTheme("dark")}>
Dark
</DropdownMenuItem>
<DropdownMenuItem onClick={() => setTheme("system")}>
System
</DropdownMenuItem>
</DropdownMenuContent>
</DropdownMenu>
)
}
```
## CSS Configuration
Ensure `globals.css` has:
```css
@layer base {
:root {
--background: 0 0% 100%;
--foreground: 222.2 84% 4.9%;
/* ... other variables ... */
}
.dark {
--background: 222.2 84% 4.9%;
--foreground: 210 40% 98%;
/* ... other variables ... */
}
}
```
## Example
If the user says: `/setup-dark-mode next`
1. Install next-themes
2. Create ThemeProvider component
3. Wrap app in ThemeProvider
4. Create ThemeToggle component
5. Add to navigation/header
6. Test theme switching
|
