What is the best way to integrate Material UI with the router in a Next.js application?

Recently, I created a Next.js v13 typescript app using npx create-next-app. After removing all the default css and html, I started incorporating Material UI into my project. However, when I added the CssBaseline, it resulted in numerous errors related to missing React imports. This issue seems to stem from the root layout component being accessed from a server component according to online resources. Here's a snippet of the error message:

Server Error
TypeError: createContext only works in Client Components. Add the "use client" directive at the top of the file to use it. Read more: https://nextjs.org/docs/messages/context-in-server-component

This error happened while generating the page. Any console logs will be displayed in the terminal window.
Call Stack
React
node_modules/@emotion/react/dist/emotion-element-6bdfffb2.esm.js (14:41)
... (error continues)

I'm puzzled by this as I expected the implementation should work seamlessly. What could I possibly be overlooking?

I believe once I resolve this issue, integrating MUI into my application will become straightforward enabling me to expand its capabilities.

Initially, I contemplated replicating the setup used in material-next-ts example within the pages router. However, the version of emotion utilized offers a simpler default approach that requires minimal configuration. Hence, I find the extensive steps taken in the pages route unnecessary. It would be beneficial if this example is adapted for the app router!

Answer №1

If you're encountering an error message, following the guidance provided can help resolve the issue:

TypeError: createContext only works in Client Components. Add the "use client" directive at the top of the file to use it. Read more: https://nextjs.org/docs/messages/context-in-server-component

To fix this, consider adding the 'use client' directive at the beginning of your app/layout.tsx. For further information on why 'use client' is needed, check out the Next.js documentation:

In many React applications, context plays a crucial role in data sharing between components. In Next.js 13, while context is fully supported within Client Components, it cannot be used directly in Server Components due to their lack of React state and interactivity. Context mainly serves to update interactive components deeper in the component tree after React state changes.

Additionally, read through another section that highlights how your app/layout.tsx functions as a default Server Component:

To simplify the adoption of Server Components, all components inside the App Router are initially classified as Server Components, including special files and colocated components. This ensures ease of implementation with optimal performance without extra steps. You also have the option to switch to Client Components by using the 'use client' directive.

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