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          "code": "import { NextResponse } from 'next/server'\nimport type { NextRequest } from 'next/server'\n\nexport function middleware(request: NextRequest) {\n  const token = request.cookies.get('token')\n  if (!token) {\n    return NextResponse.redirect(new URL('/login', request.url))\n  }\n  return NextResponse.next()\n}"
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### Middleware Authentication Example

Source: https://github.com/vercel/next.js/blob/canary/docs/middleware.mdx

Shows how to implement authentication checks in Next.js middleware

```typescript
import { NextResponse } from 'next/server'
...
```

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