Is there a substitute for useState in a Next.js server component?

With my static site at , the only interactive feature being the dark mode toggle, I understand that using useState is not feasible in a server component.

export default function RootLayout({ children }: { children: React.ReactNode }) {
    const [darkMode, setDarkMode] = useState(true);
    return (
        <html lang="en">
            <head />
            <body className={inter.className}>
                <div className={darkMode ? "dark" : ""}>
                    <main className="min-h-screen bg-white px-5 dark:bg-black absolute left-0 right-0 -z-50">
                        <FallingStar />
                        <Navbar darkMode={darkMode} setDarkMode={setDarkMode} />
                        <div className="mx-auto max-w-3xl z-50 mb-10">
                            {children}
                            <Footer />
                        </div>
                        <AnalyticsWrapper />
                    </main>
                </div>
            </body>
        </html>
    );
}

In this code snippet, I simply add the dark class to my container div to enable dark mode. The dark mode switch happens in the navbar.

When working with Next.js 13, I used the "use client" keyword in layout.tsx to convert my entire layout into a client component. However, since I want dark mode to be on by default, turning the whole layout into a client component may not be ideal. Hence, I plan to change the site into a server-side component for later hydration to achieve the desired interactivity.

Answer №1

It's important to consider shifting client components lower in the hierarchy when working with new server components/client components. This helps minimize client-side JavaScript and maintain key dependencies on the server.

For more insights, check out this link: https://nextjs.org/docs/app/building-your-application/rendering/composition-patterns#moving-client-components-down-the-tree

If you're wondering about incorporating interactive client side components without converting the layout into a client component, this answer provides some clever techniques: Does a client layout make everything client? If so, how to add client interactivities to it while keeping it a server component?

The documentation also demonstrates how Server Components can be utilized within client components through children props, offering flexibility in integration: https://nextjs.org/docs/app/building-your-application/rendering/composition-patterns#supported-pattern-passing-server-components-to-client-components-as-props

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