2024-06-14
5399
#nextjs
Ejiro Asiuwhu
30990
Jun 14, 2024 ⋅ 19 min read

How to use Auth.js for client-side authentication in Next.js

Ejiro Asiuwhu Software engineer with a drive for building highly scalable and performant web applications. Heavily interested in module federation, micro frontends, state machines, TDD, and system designs. Big on web performance and optimization, advanced component design patterns, a11y, SSR, SSG, ISR, and state management. Expert at crafting highly reusable TypeScript-heavy component libraries.

Recent posts:

react 19.2 what is new and what to expect

React 19.2 is here: Activity API, useEffectEvent and more

Discover what’s new in React 19.2, which features long-awaited features like the Activity API and the useEffectEvent Hook.

David Omotayo
Oct 13, 2025 ⋅ 7 min read
ai dev tool power rankings

AI dev tool power rankings & comparison [Oct 2025]

Compare the top AI development tools and models of October September 2025. View updated rankings, feature breakdowns, and find the best fit for you.

Chizaram Ken
Oct 13, 2025 ⋅ 9 min read

Hooks vs. Signals: The great reactivity convergence explained

React Hooks and SolidJS Signals solve reactivity differently. Learn how each manages state and updates, and when to choose one approach over the other.

Isaac Okoro
Oct 10, 2025 ⋅ 4 min read

Exploring the new Chakra UI MCP Server

Discover how the Chakra UI MCP server integrates AI into your editor, reducing context switching and accelerating development by fetching real-time documentation, component data, and code insights directly in-app.

Emmanuel John
Oct 9, 2025 ⋅ 6 min read
View all posts

14 Replies to "How to use Auth.js for client-side authentication in Next.js"

  1. Really great article 😊 I really enjoyed reading it and it makes me want to switch to Next.js. I was wondering why you called this client-side rather than severless? Is the authentication not done server side by SSR? I really apologize if I’m wrong, I’m just trying to understand the authentication flow.

  2. website: next-auth.js
    Example code : next-auth-example
    npm package : next-auth

    But it is called NextAuth.js and not next-auth.js as one could guess from all your urls.

    Am I missing something here ?

  3. Unhandled Runtime Error
    Error: React Context is unavailable in Server Components

    Call Stack
    SessionProvider

    can you please resolve this error

    1. Use the “use client” flag at the top of the file.
      That error is showing up because “SessionProvider” is using react context which is a client component and for it to work, you must mark the file as a client component with the flag above.

      You are using react 13.+.+ I believe

  4. You are using next-auth v5. However, using app router in next 15, `useSession` cannot be used. I’ve been forced to use `auth()` exported from the @/auth.tsx file. SessionProvider is also not usable any more.

Leave a Reply