Next.js Quickstart Guide: Integrating Clerk for User

Clerk is a user management platform that provides authentication, authorization, and user management features. It can be integrated with Next.js to handle user authentication and management. Here's a quickstart guide on how to use Clerk with Next.js:

1. Install Clerk:

First, you need to install Clerk in your Next.js project. You can do this by running the following command in your terminal:

npm install @clerk/clerk-nextjs

2. Initialize Clerk:

Next, you need to initialize Clerk in your _app.js or _app.tsx file. You can do this by importing the ClerkProvider and passing your Clerk frontend API key:

import { ClerkProvider } from "@clerk/clerk-nextjs";

const clerkFrontendApi = "your-clerk-frontend-api";

function MyApp({ Component, pageProps }) {
  return (
    <ClerkProvider frontendApi={clerkFrontendApi}>
      <Component {...pageProps} />
    </ClerkProvider>
  );
}

export default MyApp;

3. Use Clerk Components:

Now, you can use Clerk's components in your pages to handle authentication. For example, you can use the SignIn component to create a sign-in page:

import { SignIn } from "@clerk/clerk-nextjs";

export default function SignInPage() {
  return <SignIn path="/sign-in" routing="path" signUpUrl="/sign-up" />;
}

4. Protect Pages:

You can protect pages in your application by using the UserButton component and checking if the user is signed in. For example:

import { UserButton, useUser } from "@clerk/clerk-nextjs";

export default function ProtectedPage() {
  const { isSignedIn } = useUser();

  if (!isSignedIn) {
    return <Redirect to="/sign-in" />;
  }

  return (
    <div>
      <h1>Protected Page</h1>
      <UserButton afterSignOutUrl="/" />
    </div>
  );
}

This is a basic guide to using Clerk with Next.js. For more detailed information, you can refer to the Clerk Next.js documentation.