Amplify UI

Authenticator

Authenticator component adds complete authentication flows to your application with minimal boilerplate.

The Authenticator component adds complete authentication flows to your application with minimal boilerplate.

Quick start

Next.js 13.4+ introduces App Router with the usage of Server Components. Amplify UI components are interactive and designed to work on the client side. To use them inside of Server Components you must wrap them in a Client Component with "use client". For more info, visit Next.js third party package documentation.

If you are using Next.js Pages Router, no changes are required to use Amplify UI components.

Step 1. Configure backend

The Authenticator works seamlessly with the Amplify CLI to automatically work with your backend.

First, update @aws-amplify/cli with npm or yarn if you're using a version before 6.4.0:

npm install -g @aws-amplify/cli@latest
yarn global add @aws-amplify/cli@latest

Now that you have the Amplify CLI installed, you can set up your Amplify project by running amplify init in your project's root directory. Then run amplify add auth and follow the prompts to add authentication to your backend configuration.

If you have an existing backend, run amplify pull to sync your aws-exports.js with your cloud backend.

You should now have an aws-exports.js file in your src/ directory with your latest backend configuration.

Step 2. Install dependencies

npm install @aws-amplify/ui-react aws-amplify
yarn add @aws-amplify/ui-react aws-amplify

Step 3. Add the Authenticator

The quickest way to get started is by wrapping your application with the Authenticator component. Once an end-user has created an account & signed in, the underlying component is rendered with access to the user.

You can use the Authenticator component directly, or wrap your app in withAuthenticator Higher-Order Component:

import React from 'react';
import { Amplify } from 'aws-amplify';
import { Authenticator } from '@aws-amplify/ui-react';
import '@aws-amplify/ui-react/styles.css'; import awsExports from './aws-exports'; Amplify.configure(awsExports); export default function App() {
return (
<Authenticator>
{({ signOut, user }) => ( <main> <h1>Hello {user.username}</h1> <button onClick={signOut}>Sign out</button> </main> )} </Authenticator> ); }

withAuthenticator defaults the variation prop to modal.

import { Amplify } from 'aws-amplify';

import { withAuthenticator } from '@aws-amplify/ui-react';
import '@aws-amplify/ui-react/styles.css';

import awsExports from './aws-exports';
Amplify.configure(awsExports);

function App({ isPassedToWithAuthenticator, signOut, user }) {
  if (!isPassedToWithAuthenticator) {
    throw new Error(`isPassedToWithAuthenticator was not provided`);
  }

  return (
    <>
      <h1>Hello {user.username}</h1>
      <button onClick={signOut}>Sign out</button>
    </>
  );
}

export default withAuthenticator(App);

export async function getStaticProps() {
  return {
    props: {
      isPassedToWithAuthenticator: true,
    },
  };
}
import { Amplify } from 'aws-amplify';

import { withAuthenticator, WithAuthenticatorProps, } from '@aws-amplify/ui-react';
import '@aws-amplify/ui-react/styles.css';
import awsExports from './aws-exports'; Amplify.configure(awsExports);
interface Props extends WithAuthenticatorProps {
isPassedToWithAuthenticator: boolean; } function App({ isPassedToWithAuthenticator, signOut, user }: Props) { if (!isPassedToWithAuthenticator) { throw new Error(`isPassedToWithAuthenticator was not provided`); }
return (
<> <h1>Hello {user?.username}</h1> <button onClick={signOut}>Sign out</button> </> ); } export default withAuthenticator(App); export async function getStaticProps() { return { props: { isPassedToWithAuthenticator: true, }, }; }
React Authenticator v1

Looking for a previous version of Authenticator? Checkout the Authenticator v1 documentation.

Please see troubleshooting if you have trouble building or running your application with Authenticator.

Next steps

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