firebaseui web

FirebaseUI is an open-source JavaScript library for Web that provides simple, customizable UI bindings on top of Firebase SDKs to eliminate boilerplate code and promote best practices.

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FirebaseUI for Web — Auth

FirebaseUI is an open-source JavaScript library for Web that provides simple,
customizable UI bindings on top of Firebase SDKs
to eliminate boilerplate code and promote best practices.

FirebaseUI Auth provides a drop-in auth solution that handles the UI flows for
signing in users with email addresses and passwords, phone numbers, Identity
Provider Sign In including Google, Facebook, GitHub, Twitter, Apple, Microsoft,
Yahoo, OpenID Connect (OIDC) providers and SAML providers. It is built on top of
Firebase Auth.

The FirebaseUI component implements best practices for authentication on mobile
devices and websites, helping to sign-in and sign-up conversion for your app. It
also handles cases like account recovery and account linking that can be
security sensitive and error-prone to handle.

FirebaseUI Auth clients are also available for
iOS and
Android.

FirebaseUI fully supports all recent browsers. Signing in with federated
providers (Google, Facebook, Twitter, GitHub, Apple, Microsoft, Yahoo, OIDC,
SAML) is also supported in Cordova/Ionic environments. Additional non-browser
environments(React Native…) or Chrome extensions will be added once the
underlying Firebase core SDK supports them in a way that is compatible with
FirebaseUI.

Table of Contents

  1. Demo
  2. Installation
  3. Usage instructions
  4. Configuration
  5. Customization
  6. Advanced
  7. Developer Setup
  8. IAP External Identities Support with FirebaseUI
  9. Cordova Setup
  10. React DOM Setup
  11. Angular Setup
  12. Known issues
  13. Deprecated APIs
  14. Release Notes

Demo

Accessible here:
https://fir-ui-demo-84a6c.firebaseapp.com.

Installation

Option 1: CDN

You just need to include the following script and CSS file in the <head> tag
of your page, below the initialization snippet from the Firebase Console:

<script src="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.js"></script>
<link type="text/css" rel="stylesheet" href="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.css" />

Localized Widget

Localized versions of the widget are available through the CDN. To use a
localized widget, load the localized JS library instead of the default library:

<script src="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth__{LANGUAGE_CODE}.js"></script>
<link type="text/css" rel="stylesheet" href="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.css" />

where {LANGUAGE_CODE} is replaced by the code of the language you want. For example, the French
version of the library is available at
https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth__fr.js. The list of available
languages and their respective language codes can be found at LANGUAGES.md.

Right-to-left languages also require the right-to-left version of the stylesheet, available at
https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth-rtl.css, instead of the default
stylesheet. The supported right-to-left languages are Arabic (ar), Farsi (fa), and Hebrew (iw).

Option 2: npm Module

Install FirebaseUI and its peer-dependency Firebase via npm using the following
commands:

$ npm install firebase firebaseui --save

You can then import the following modules within your source files:

import firebase from 'firebase/compat/app';
import * as firebaseui from 'firebaseui'
import 'firebaseui/dist/firebaseui.css'

Option 3: Bower component

Install FirebaseUI and its dependencies via Bower using the following command:

$ bower install firebaseui --save

You can then include the required files in your HTML, if your HTTP Server serves
the files within bower_components/:

<script src="bower_components/firebaseui/dist/firebaseui.js"></script>
<link type="text/css" rel="stylesheet" href="bower_components/firebaseui/dist/firebaseui.css" />

Using FirebaseUI for Authentication

FirebaseUI includes the following flows:

  1. Interaction with Identity Providers such as Google and Facebook
  2. Phone number based authentication
  3. Sign-up and sign-in with email accounts (email/password and email link)
  4. Password reset
  5. Prevention of account duplication (activated when
    “One account per email address” setting is enabled in the
    Firebase console. This setting is enabled
    by default.)
  6. Integration with
    one-tap sign-up
  7. Ability to upgrade anonymous users through sign-in/sign-up.
  8. Sign-in as a guest

Configuring sign-in providers

To use FirebaseUI to authenticate users you first need to configure each
provider you want to use in their own developer app settings. Please read the
Before you begin section of Firebase Authentication at the following links:

For Google Cloud’s Identity Platform (GCIP)
developers, you can also enable SAML and OIDC providers following the
instructions:

Starting the sign-in flow

You first need to initialize your
Firebase app. The
firebase.auth.Auth instance should be passed to the constructor of
firebaseui.auth.AuthUI. You can then call the start method with the CSS
selector that determines where to create the widget, and a configuration object.

The following example shows how to set up a sign-in screen with all supported
providers. Please refer to the demo application in the examples folder
for a more in-depth example, showcasing a Single Page Application mode.

Firebase and FirebaseUI do not work when executed directly from a file (i.e.
opening the file in your browser, not through a web server). Always run
firebase serve (or your preferred local server) to test your app locally.

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Sample FirebaseUI App</title>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-app-compat.js"></script>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-auth-compat.js"></script>
    <!-- *******************************************************************************************
       * TODO(DEVELOPER): Paste the initialization snippet from this dialog box:
       * Firebase Console > Project Settings > Add App > Web.
       ***************************************************************************************** -->
    <script src="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.js"></script>
    <link type="text/css" rel="stylesheet" href="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.css" />
    <script type="text/javascript">
      // FirebaseUI config.
      var uiConfig = {
        signInSuccessUrl: '<url-to-redirect-to-on-success>',
        signInOptions: [
          // Leave the lines as is for the providers you want to offer your users.
          firebase.auth.GoogleAuthProvider.PROVIDER_ID,
          firebase.auth.FacebookAuthProvider.PROVIDER_ID,
          firebase.auth.TwitterAuthProvider.PROVIDER_ID,
          firebase.auth.GithubAuthProvider.PROVIDER_ID,
          firebase.auth.EmailAuthProvider.PROVIDER_ID,
          firebase.auth.PhoneAuthProvider.PROVIDER_ID,
          firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID
        ],
        // tosUrl and privacyPolicyUrl accept either url string or a callback
        // function.
        // Terms of service url/callback.
        tosUrl: '<your-tos-url>',
        // Privacy policy url/callback.
        privacyPolicyUrl: function() {
          window.location.assign('<your-privacy-policy-url>');
        }
      };

      // Initialize the FirebaseUI Widget using Firebase.
      var ui = new firebaseui.auth.AuthUI(firebase.auth());
      // The start method will wait until the DOM is loaded.
      ui.start('#firebaseui-auth-container', uiConfig);
    </script>
  </head>
  <body>
    <!-- The surrounding HTML is left untouched by FirebaseUI.
         Your app may use that space for branding, controls and other customizations.-->
    <h1>Welcome to My Awesome App</h1>
    <div id="firebaseui-auth-container"></div>
  </body>
</html>

This is only relevant for single page apps or apps where the sign-in UI is
rendered conditionally (e.g. button click)

When redirecting back from Identity Providers like Google
and Facebook or email link sign-in, start() method needs to be called to
finish the sign-in flow.
If it requires a user interaction to start the initial sign-in process, you need
to check if there is a pending redirect operation going on on page load to check
whether start() needs to be called.

To check if there is a pending redirect operation to complete a sign-in attempt,
check isPendingRedirect() before deciding whether to render FirebaseUI
via start().

if (ui.isPendingRedirect()) {
  ui.start('#firebaseui-auth-container', uiConfig);
}

Here is how you would track the Auth state across all your pages:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Sample FirebaseUI App</title>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-app-compat.js"></script>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-auth-compat.js"></script>
    <!-- *******************************************************************************************
       * TODO(DEVELOPER): Paste the initialization snippet from:
       * Firebase Console > Overview > Add Firebase to your web app. *
       ***************************************************************************************** -->
    <script type="text/javascript">
      initApp = function() {
        firebase.auth().onAuthStateChanged(function(user) {
          if (user) {
            // User is signed in.
            var displayName = user.displayName;
            var email = user.email;
            var emailVerified = user.emailVerified;
            var photoURL = user.photoURL;
            var uid = user.uid;
            var phoneNumber = user.phoneNumber;
            var providerData = user.providerData;
            user.getIdToken().then(function(accessToken) {
              document.getElementById('sign-in-status').textContent = 'Signed in';
              document.getElementById('sign-in').textContent = 'Sign out';
              document.getElementById('account-details').textContent = JSON.stringify({
                displayName: displayName,
                email: email,
                emailVerified: emailVerified,
                phoneNumber: phoneNumber,
                photoURL: photoURL,
                uid: uid,
                accessToken: accessToken,
                providerData: providerData
              }, null, '  ');
            });
          } else {
            // User is signed out.
            document.getElementById('sign-in-status').textContent = 'Signed out';
            document.getElementById('sign-in').textContent = 'Sign in';
            document.getElementById('account-details').textContent = 'null';
          }
        }, function(error) {
          console.log(error);
        });
      };

      window.addEventListener('load', function() {
        initApp()
      });
    </script>
  </head>
  <body>
    <h1>Welcome to My Awesome App</h1>
    <div id="sign-in-status"></div>
    <div id="sign-in"></div>
    <pre id="account-details"></pre>
  </body>
</html>

Configuration

FirebaseUI supports the following configuration parameters.

Name Required Description
autoUpgradeAnonymousUsers No Whether to automatically upgrade existing anonymous users on sign-in/sign-up. See Upgrading anonymous users.
Default: false When set to true, signInFailure callback is required to be provided to handle merge conflicts.
callbacks No An object of developers' callbacks after specific events.
Default: {}
credentialHelper No The Credential Helper to use. See Credential Helper.
Default: firebaseui.auth.CredentialHelper.NONE
queryParameterForSignInSuccessUrl No The redirect URL parameter name for the sign-in success URL. See Overwriting the sign-in success URL.
Default: "signInSuccessUrl"
queryParameterForWidgetMode No The redirect URL parameter name for the “mode” of the Widget. See FirebaseUI widget modes.
Default: "mode"
signInFlow No The sign-in flow to use for IDP providers: redirect or popup.
Default: "redirect"
immediateFederatedRedirect No A boolean which determines whether to immediately redirect to the provider's site or instead show the default 'Sign in with Provider' button when there is only a single federated provider in signInOptions. In order for this option to take effect, the signInOptions must only hold a single federated provider (like 'google.com') and signInFlow must be set to 'redirect'.
signInOptions Yes The list of providers enabled for signing into your app. The order you specify them will be the order they are displayed on the sign-in provider selection screen.
signInSuccessUrl No The URL where to redirect the user after a successful sign-in. Required when the signInSuccessWithAuthResult callback is not used or when it returns true.
tosUrl Yes The URL of the Terms of Service page or a callback function to be invoked when Terms of Service link is clicked.
privacyPolicyUrl Yes The URL of the Privacy Policy page or a callback function to be invoked when Privacy Policy link is clicked.
adminRestrictedOperation No This setting is only applicable to "Google Cloud Identity Platform" projects. Learn more about [GCIP](https://cloud.google.com/identity-platform/). The object for configuring `adminRestrictedOperation` options, contains 3 fields: `status(boolean)`: This flag should mirror the project user actions ("Enable create") settings. When sign-up is disabled in the project settings, this should be set to `true`. Setting this to `true` without disabling sign-up in the project settings will not have any effect. For GCIP projects, this is done by going to the "Settings" page in the "Identity Platform" section in the Cloud Console. Under the "USERS" tab, go to "User actions". Uncheck "Enable create (sign-up)" and click "SAVE". This does not enforce the policy but is rather useful for providing additional instructions to the end user when a user tries to create a new user account and the Auth server blocks the operation. This boolean works on all providers (federated, email/password, email link and phone number). `adminEmail(string|undefined)`: The optional site administrator email to contact for access when sign up is disabled, for example: `[email protected]`. `helpLink(string|undefined)`: The optional help link to provide information on how to get access to the site when sign up is disabled. For example: `https://www.example.com/trouble_signing_in`.

Credential Helper

The role of a credential helper is to help your users sign into your website.
When one is enabled, your users will be prompted with email addresses and
usernames they have saved from your app or other applications.
FirebaseUI supports the one-tap sign-up credential helper. accountchooser.com
is no longer supported.

One-tap sign-up

One-tap sign-up
provides seamless authentication flows to
your users with Google’s one tap sign-up and automatic sign-in APIs.
With one tap sign-up, users are prompted to create an account with a dialog
that’s inline with FirebaseUI NASCAR screen. With just one tap, they get a
secure, token-based, passwordless account with your service, protected by their
Google Account. As the process is frictionless, users are much more likely to
register.
Returning users are signed in automatically, even when they switch devices or
platforms, or after their session expires.
One-tap sign-up integrates with FirebaseUI and if you request Google OAuth
scopes, you will still get back the expected Google OAuth access token even if
the user goes through the one-tap flow. However, in that case ‘redirect’ flow is
always used even when ‘popup’ is specified.
In addition, if you choose to force prompt for Google sign-in, one-tap auto
sign-in will be automatically disabled.
One-tap is an additive feature and is only supported in the latest evergreen
modern browser environments.
For more information on how to configure one-tap sign-up, refer to the
one-tap get started guide.

The following example shows how to configure one-tap sign-up with FirebaseUI.
Along with the corresponding one-tap credentialHelper, the Google OAuth
clientId has to be provided with the Firebase Google provider:

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      // Google provider must be enabled in Firebase Console to support one-tap
      // sign-up.
      provider: firebase.auth.GoogleAuthProvider.PROVIDER_ID,
      // Required to enable ID token credentials for this provider.
      // This can be obtained from the Credentials page of the Google APIs
      // console. Use the same OAuth client ID used for the Google provider
      // configured with GCIP or Firebase Auth.
      clientId: 'xxxxxxxxxxxxxxxxx.apps.googleusercontent.com'
    },
    firebase.auth.FacebookAuthProvider.PROVIDER_ID,
    firebase.auth.TwitterAuthProvider.PROVIDER_ID,
    firebase.auth.GithubAuthProvider.PROVIDER_ID,
    firebase.auth.EmailAuthProvider.PROVIDER_ID,
  ],
  // Required to enable one-tap sign-up credential helper.
  credentialHelper: firebaseui.auth.CredentialHelper.GOOGLE_YOLO
});
// Auto sign-in for returning users is enabled by default except when prompt is
// not 'none' in the Google provider custom parameters. To manually disable:
ui.disableAutoSignIn();

Auto sign-in for returning users can be disabled by calling
ui.disableAutoSignIn(). This may be needed if the FirebaseUI sign-in page is
being rendered after the user signs out.

To see FirebaseUI in action with one-tap sign-up, check out the FirebaseUI
demo app.

Credential Helper Value
One-tap sign-up firebaseui.auth.CredentialHelper.GOOGLE_YOLO
None (disable) firebaseui.auth.CredentialHelper.NONE

Available providers

Provider Value
Google firebase.auth.GoogleAuthProvider.PROVIDER_ID
Facebook firebase.auth.FacebookAuthProvider.PROVIDER_ID
Twitter firebase.auth.TwitterAuthProvider.PROVIDER_ID
Github firebase.auth.GithubAuthProvider.PROVIDER_ID
Email and password firebase.auth.EmailAuthProvider.PROVIDER_ID
Phone number firebase.auth.PhoneAuthProvider.PROVIDER_ID
Anonymous firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID
Apple apple.com
Microsoft microsoft.com
Yahoo yahoo.com
SAML (GCIP only) saml.*********
OIDC (GCIP only) oidc.*********

Configure OAuth providers

To specify custom scopes, or custom OAuth parameters per provider, you can pass
an object instead of just the provider value:

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: firebase.auth.GoogleAuthProvider.PROVIDER_ID,
      scopes: [
        'https://www.googleapis.com/auth/contacts.readonly'
      ],
      customParameters: {
        // Forces account selection even when one account
        // is available.
        prompt: 'select_account'
      }
    },
    {
      provider: firebase.auth.FacebookAuthProvider.PROVIDER_ID,
      scopes: [
        'public_profile',
        'email',
        'user_likes',
        'user_friends'
      ],
      customParameters: {
        // Forces password re-entry.
        auth_type: 'reauthenticate'
      }
    },
    // Twitter does not support scopes.
    firebase.auth.TwitterAuthProvider.PROVIDER_ID,
    // Other providers don't need to be given as object.
    firebase.auth.EmailAuthProvider.PROVIDER_ID
  ]
});

Generic OAuth provider

You can let your users authenticate with FirebaseUI using OAuth providers like
Apple,
Microsoft Azure Active Directory
and Yahoo
by integrating generic OAuth Login into your app.

You just need to pass the provider ID in signInOptions, FirebaseUI provides
the default configurations for the sign in button(button color, icon and display
name):

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    'apple.com',
    'microsoft.com',
    'yahoo.com',
  ]
});

You can also override these default configurations with your own custom ones.
Generic OAuth providers’ signInOptions support the following configuration
parameters.

Name Required Description
provider Yes The provider ID, eg. microsoft.com.
providerName No The provider name displayed to end users (sign in button/linking prompt), eg. "Microsoft" Default: provider ID
fullLabel No The full label of the button. Instead of "Sign in with $providerName", this button label will be used. Default: Sign in with $providerName
buttonColor No The color of sign in button. The css of the button can be overwritten with the attribute/value in the HTML element: data-provider-id="providerId"
iconUrl No The URL of the Identity Provider's icon. This will be displayed on the provider's sign-in button, etc.
scopes No The list of additional OAuth 2.0 scopes beyond basic profile that you want to request from the authentication provider.
customParameters No The list of additional custom OAuth parameters that you want to send with the OAuth request.
loginHintKey No The key of the custom parameter, with which the login hint can be passed to the provider. This is useful in case a user previously signs up with an IdP like Microsoft and then tries to sign in with email using the same Microsoft email. FirebaseUI can then ask the user to sign in with that email to the already registered account with Microsoft. For Microsoft and Yahoo, this field is `login_hint`. 
ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: 'microsoft.com',
      providerName: 'Microsoft',
      // To override the full label of the button.
      // fullLabel: 'Login with Microsoft',
      buttonColor: '#2F2F2F',
      iconUrl: '<icon-url-of-sign-in-button>',
      loginHintKey: 'login_hint',
      scopes: [
        'mail.read'
      ],
      customParameters: {
        prompt: 'consent'
      }
    }
  ]
});

OpenID Connect (OIDC) providers (GCIP only)

For GCIP customers, you can enable your
app for
OpenID Connect (OIDC)
authentication with FirebaseUI.

OIDC providers’ signInOptions support the following configuration parameters.

Name Required Description
provider Yes The provider ID, eg. oidc.myProvider.
providerName No The provider name displayed to end users (sign in button/linking prompt). Default: provider ID
fullLabel No The full label of the button. Instead of "Sign in with $providerName", this button label will be used. Default: Sign in with $providerName
buttonColor Yes The color of sign in button. The css of the button can be overwritten with attribute/value in the HTML element: data-provider-id="providerId"
iconUrl Yes The URL of the Identity Provider's icon. This will be displayed on the provider's sign-in button, etc.
customParameters No The list of additional custom parameters that the OIDC provider supports. 
ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: 'oidc.myProvider',
      providerName: 'MyOIDCProvider',
      // To override the full label of the button.
      // fullLabel: 'Employee Login',
      buttonColor: '#2F2F2F',
      iconUrl: '<icon-url-of-sign-in-button>',
      customParameters: {
        OIDCSupportedParameter: 'value'
      }
    }
  ]
});

SAML providers (GCIP only)

For GCIP customers, you can enable your
app for
SAML
authentication with FirebaseUI.

SAML providers’ signInOptions support the following configuration parameters.

Name Required Description
provider Yes The provider ID, eg. saml.myProvider.
providerName No The provider name displayed to end users (sign in button/linking prompt). Default: provider ID
fullLabel No The full label of the button. Instead of "Sign in with $providerName", this button label will be used. Default: Sign in with $providerName
buttonColor Yes The color of sign in button. The css of the button can be overwritten with attribute/value in the HTML element: data-provider-id="providerId"
iconUrl Yes The URL of the Identity Provider's icon. This will be displayed on the provider's sign-in button, etc. 
ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: 'saml.myProvider',
      providerName: 'MySAMLProvider',
      // To override the full label of the button.
      // fullLabel: 'Constractor Portal',
      buttonColor: '#2F2F2F',
      iconUrl: '<icon-url-of-sign-in-button>'
    }
  ]
});

Configure Email Provider

You can configure either email/password or email/link sign-in with FirebaseUI by
providing the relevant object in the configuration signInOptions
array.

You can disable new user sign up with email providers by setting the flag
disableSignUp.status to true. This will display an error message when new
users attempt to sign up.

Note that this flag will only disable sign up from the UI and will not prevent
sign up via REST API. It is highly recommended that Identity Platform projects
enforce this policy via one of these 2 mechanisms:

  • Blocking functions: Set a beforeCreate trigger to disable sign up for email
    providers.
  • In the Cloud Console / Settings / USERS tab, uncheck Enable create (sign-up)
    checkbox. Though for this setting, sign up for all providers will be disabled.
Name Type Required Description
provider string Yes For email sign-in, this should be firebase.auth.EmailAuthProvider.PROVIDER_ID.
requireDisplayName boolean No Defines whether to require the user to provide a display name during email and password sign up. Note: this has no effect when using the firebase.auth.EmailAuthProvider.EMAIL_LINK_SIGN_IN_METHOD.
Default: true
signInMethod string No Defines whether to use email and password or email link authentication. This should be firebase.auth.EmailAuthProvider.EMAIL_PASSWORD_SIGN_IN_METHOD for email and password sign-in, firebase.auth.EmailAuthProvider.EMAIL_LINK_SIGN_IN_METHOD for email link authentication.
Default: firebase.auth.EmailAuthProvider.EMAIL_PASSWORD_SIGN_IN_METHOD
forceSameDevice boolean No Whether to force same device flow. If false, opening the link on a different device will display a message instructing the user to open the link on the same device or browser. This should be true when used with anonymous user upgrade flows. This is only relevant to email link sign-in. Default: false
emailLinkSignIn function No Defines the optional callback function to return firebase.auth.ActionCodeSettings configuration to use when sending the link. This provides the ability to specify how the link can be handled, custom dynamic link, additional state in the deep link, etc. When not provided, the current URL is used and a web only flow is triggered. This is only relevant to email link sign-in.
disableSignUp firebaseui.auth.DisableSignUpConfig No The object for configuring `disableSignUp` options, contains 3 fields: `status(boolean)`: Whether disable user from signing up with email providers (email/password or email link). `adminEmail(string|undefined)`: The optional site administrator email to contact for access when sign up is disabled, for example: `[email protected]`. `helpLink(string|undefined)`: The optional help link to provide information on how to get access to the site when sign up is disabled. For example: `https://www.example.com/trouble_signing_in`.

Email and Password

Email and password authentication is the default sign-in method for Email
providers.
The EmailAuthProvider with email and password can be configured to require the
user to enter a display name (defaults to true).

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: firebase.auth.EmailAuthProvider.PROVIDER_ID,
      requireDisplayName: false
    }
  ]
});

Email Link Authentication

FirebaseUI supports sign-in and sign-up with email links.
Using email link sign-in with FirebaseUI comes with the following benefits:

  • End to end support for email link sign-in with only a few configuration lines.
  • Enforces security and privacy best practices.
  • Ability to force same device flows or allow cross device flows where a user
    can start the flow on one device and end it on another. This also covers
    Android where email link sign-in is also supported with
    FirebaseUI-android and
    FirebaseUI-ios
    for iOS support.
  • Ability to switch to email link sign-in while continuing to sign-in existing
    users with email and password.
  • Ability to support account linking, where an existing email link user signing
    in with Facebook for the first time using the same email will have
    both accounts merged so they can sign in with either (Facebook or email link)
    going forward.
  • Ability to support anonymous user upgrade as long as the flow starts and ends
    on the same device. Users opening the link on a different device will be
    notified to open the link on the same device where the flow started.

The sample code below demonstrates how to configure email link sign-in with
FirebaseUI. In this example, cross device flows are allowed and additional state
is passed in the URL, as well as the ability to configure the link to open via
mobile application too.

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: firebase.auth.EmailAuthProvider.PROVIDER_ID,
      // Use email link authentication and do not require password.
      // Note this setting affects new users only.
      // For pre-existing users, they will still be prompted to provide their
      // passwords on sign-in.
      signInMethod: firebase.auth.EmailAuthProvider.EMAIL_LINK_SIGN_IN_METHOD,
      // Allow the user the ability to complete sign-in cross device, including
      // the mobile apps specified in the ActionCodeSettings object below.
      forceSameDevice: false,
      // Used to define the optional firebase.auth.ActionCodeSettings if
      // additional state needs to be passed along request and whether to open
      // the link in a mobile app if it is installed.
      emailLinkSignIn: function() {
        return {
          // Additional state showPromo=1234 can be retrieved from URL on
          // sign-in completion in signInSuccess callback by checking
          // window.location.href.
          // If you are using a fragment in the URL, additional FirebaseUI
          // parameters will be appended to the query string component instead
          // of the fragment.
          // So for a url: https://www.example.com/#/signin
          // The completion URL will take the form:
          // https://www.example.com/?uid_sid=xyz&ui_sd=0#/signin
          // This should be taken into account when using frameworks with "hash
          // routing".
          url: 'https://www.example.com/completeSignIn?showPromo=1234',
          // Custom FDL domain.
          dynamicLinkDomain: 'example.page.link',
          // Always true for email link sign-in.
          handleCodeInApp: true,
          // Whether to handle link in iOS app if installed.
          iOS: {
            bundleId: 'com.example.ios'
          },
          // Whether to handle link in Android app if opened in an Android
          // device.
          android: {
            packageName: 'com.example.android',
            installApp: true,
            minimumVersion: '12'
          }
        };
      }
    }
  ]
});

When rendering the sign-in UI conditionally (relevant for single page apps),
use ui.isPendingRedirect() to detect if the URL corresponds to a sign-in with
email link and the UI needs to be rendered to complete sign-in.
You can also just use
firebase.auth().isSignInWithEmailLink(window.location.href).

// Is there an email link sign-in?
if (ui.isPendingRedirect()) {
  ui.start('#firebaseui-auth-container', uiConfig);
}
// This can also be done via:
if (firebase.auth().isSignInWithEmailLink(window.location.href)) {
  ui.start('#firebaseui-auth-container', uiConfig);
}

Additional state passed in the url can be retrieved on sign-in
completion via the signInSuccess callbacks.

If you are using a fragment in the URL, additional FirebaseUI parameters will be
appended to the query string component instead of the fragment.
So for a url https://www.example.com/#/signin, the completion URL will take
the form https://www.example.com/?uid_sid=xyz&ui_sd=0#/signin.
This should be taken into account when using frameworks with “hash routing”.

// ...
signInSuccessWithAuthResult: function(authResult, redirectUrl) {
  // If a user signed in with email link, ?showPromo=1234 can be obtained from
  // window.location.href.
  // ...
  return false;
}

FirebaseUI uses the
history API to
clear the URL from query parameters related to email link sign-in after the
one-time code is processed. This prevents the user from re-triggering the
sign-in completion flow again on page reload or if the user signs out and tries
to sign in again in a single page application, etc.

When same device flows are not enforced, a user going through account linking
flow (eg. user signing in with Facebook with an email that belongs to an
existing email link user) opening the link on a different device would be given
the choice to continue sign-in with email link without merging the Facebook
credential or instructed to open the link on the same device where the flow was
initiated to successfully merge both accounts.

You cannot use email/password and email/link sign-in at the same time. Only one
mode can be configured at a time. However, if you previously signed up users
with passwords. Switching to email/link will only apply to new users and
existing password users will continue to be prompted for password on sign-in.

Configure Phone Provider

The PhoneAuthProvider can be configured with custom reCAPTCHA parameters
whether reCAPTCHA is visible or invisible (defaults to normal). Refer to the
reCAPTCHA API docs for
more details.

The default country to select in the phone number input can also be set.
List of supported country codes. If unspecified,
the phone number input will default to the United States (+1).

The countries to select can also be configured with blacklistedCountries or
whitelistedCountries. It accepts either ISO (alpha-2) or E164
(prefix with ‘+’) formatted country code. Invalid country code will be ignored.
whitelistedCountries and blacklistedCountries cannot be specified at the
same time.

The following options are currently supported. Any other
parameters will be ignored.

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: firebase.auth.PhoneAuthProvider.PROVIDER_ID,
      recaptchaParameters: {
        type: 'image', // 'audio'
        size: 'normal', // 'invisible' or 'compact'
        badge: 'bottomleft' //' bottomright' or 'inline' applies to invisible.
      },
      defaultCountry: 'GB', // Set default country to the United Kingdom (+44).
      // For prefilling the national number, set defaultNationNumber.
      // This will only be observed if only phone Auth provider is used since
      // for multiple providers, the NASCAR screen will always render first
      // with a 'sign in with phone number' button.
      defaultNationalNumber: '1234567890',
      // You can also pass the full phone number string instead of the
      // 'defaultCountry' and 'defaultNationalNumber'. However, in this case,
      // the first country ID that matches the country code will be used to
      // populate the country selector. So for countries that share the same
      // country code, the selected country may not be the expected one.
      // In that case, pass the 'defaultCountry' instead to ensure the exact
      // country is selected. The 'defaultCountry' and 'defaultNationaNumber'
      // will always have higher priority than 'loginHint' which will be ignored
      // in their favor. In this case, the default country will be 'GB' even
      // though 'loginHint' specified the country code as '+1'.
      loginHint: '+11234567890',
      // You can provide a 'whitelistedCountries' or 'blacklistedCountries' for
      // countries to select. It takes an array of either ISO (alpha-2) or
      // E164 (prefix with '+') formatted country codes. If 'defaultCountry' is
      // not whitelisted or is blacklisted, the default country will be set to
      // the first country available (alphabetical order). Notice that
      // 'whitelistedCountries' and 'blacklistedCountries' cannot be specified
      // at the same time.
      whitelistedCountries: ['US', '+44']
    }
  ]
});

Configure Anonymous Provider

The AnonymousAuthProvider can be enabled to let users continue as a guest. If
a user is already signed in anonymously, clicking this sign-in option will keep
the same current anonymous user. In addition, when auto-upgrade for anonymous
users is enabled in addition to this option and a user is already signed in
anonymously, clicking this sign-in option will also keep the same current
anonymous user.

ui.start('#firebaseui-auth-container', {
  signInOptions: [
    {
      provider: firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID
    }
  ]
});

Sign In Flows

Two sign in flows are available:

  • redirect, the default, will perform a full page redirect to the sign-in page
    of the provider (Google, Facebook…). This is recommended for mobile apps.
  • The popup flow will open a popup to the sign-in page of the provider. If the
    popup is blocked by the browser, it will fall back to a full page redirect.

Available callbacks

signInSuccessWithAuthResult(authResult, redirectUrl)

The signInSuccessWithAuthResult callback is invoked when user signs in
successfully.
The authResult provided here is a firebaseui.auth.AuthResult object, which
includes the current logged in user, the credential used to sign in the user,
additional user info indicating if the user is new or existing and operation
type like ‘signIn’ or ‘link’. This callback will replace signInSuccess in
future.

Parameters:

Name Type Optional Description
authResult firebaseui.auth.AuthResult No The AuthResult of successful sign-in operation. The AuthResult object has same signature as firebase.auth.UserCredential.
redirectUrl string Yes The URL where the user is redirected after the callback finishes. It will only be given if you overwrite the sign-in success URL.

Should return: boolean

If the callback returns true, then the page is automatically redirected
depending on the case:

  • If no signInSuccessUrl parameter was given in the URL (See:
    Overwriting the sign-in success URL)
    then the default signInSuccessUrl in config is used.
  • If the value is provided in the URL, that value will be used instead of the
    static signInSuccessUrl in config.

If the callback returns false or nothing, the page is not automatically
redirected.

signInSuccess(currentUser, credential, redirectUrl)

This callback will be deprecated and will be replaced by
signInSuccessWithAuthResult which takes firebaseui.auth.AuthResult.

Parameters:

Name Type Optional Description
currentUser firebase.User No The logged in user.
credential firebase.auth.AuthCredential Yes The credential used to sign in the user.
redirectUrl string Yes The URL where the user is redirected after the callback finishes. It will only be given if you overwrite the sign-in success URL.

Should return: boolean

If the callback returns true, then the page is automatically redirected
depending on the case:

  • If no signInSuccessUrl parameter was given in the URL (See:
    Overwriting the sign-in success URL)
    then the default signInSuccessUrl in config is used.
  • If the value is provided in the URL, that value will be used instead of the
    static signInSuccessUrl in config.

If the callback returns false or nothing, the page is not automatically
redirected.

signInFailure(error)

The signInFailure callback is provided to handle any unrecoverable error
encountered during the sign-in process.
The error provided here is a firebaseui.auth.AuthUIError error with the
following properties.

firebaseui.auth.AuthUIError properties:

Name Type Optional Description
code string No The corresponding error code. Currently the only error code supported is firebaseui/anonymous-upgrade-merge-conflict
credential firebase.auth.AuthCredential Yes The existing non-anonymous user credential the user tried to sign in with.

Should return: Promise<void>|void

FirebaseUI will wait for the returned promise to handle the reported error
before clearing the UI. If no promise is returned, the UI will be cleared on
completion. Even when this callback resolves, signInSuccessWithAuthResult
callback will not be triggered.

This callback is required when autoUpgradeAnonymousUsers is enabled.

uiShown()

This callback is triggered the first time the widget UI is rendered. This is
useful for cases where the application should display a custom loader before
FirebaseUI is displayed.

Example with all parameters used

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Sample FirebaseUI App</title>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-app-compat.js"></script>
    <script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-auth-compat.js"></script>
    <!-- *******************************************************************************************
       * TODO(DEVELOPER): Paste the initialization snippet from:
       * Firebase Console > Overview > Add Firebase to your web app. *
       ***************************************************************************************** -->
    <script src="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.js"></script>
    <link type="text/css" rel="stylesheet" href="https://www.gstatic.com/firebasejs/ui/6.1.0/firebase-ui-auth.css" />
    <script type="text/javascript">
      // FirebaseUI config.
      var uiConfig = {
        callbacks: {
          signInSuccessWithAuthResult: function(authResult, redirectUrl) {
            var user = authResult.user;
            var credential = authResult.credential;
            var isNewUser = authResult.additionalUserInfo.isNewUser;
            var providerId = authResult.additionalUserInfo.providerId;
            var operationType = authResult.operationType;
            // Do something with the returned AuthResult.
            // Return type determines whether we continue the redirect
            // automatically or whether we leave that to developer to handle.
            return true;
          },
          signInFailure: function(error) {
            // Some unrecoverable error occurred during sign-in.
            // Return a promise when error handling is completed and FirebaseUI
            // will reset, clearing any UI. This commonly occurs for error code
            // 'firebaseui/anonymous-upgrade-merge-conflict' when merge conflict
            // occurs. Check below for more details on this.
            return handleUIError(error);
          },
          uiShown: function() {
            // The widget is rendered.
            // Hide the loader.
            document.getElementById('loader').style.display = 'none';
          }
        },
        credentialHelper: firebaseui.auth.CredentialHelper.NONE,
        // Query parameter name for mode.
        queryParameterForWidgetMode: 'mode',
        // Query parameter name for sign in success url.
        queryParameterForSignInSuccessUrl: 'signInSuccessUrl',
        // Will use popup for IDP Providers sign-in flow instead of the default, redirect.
        signInFlow: 'popup',
        signInSuccessUrl: '<url-to-redirect-to-on-success>',
        signInOptions: [
          // Leave the lines as is for the providers you want to offer your users.
          firebase.auth.GoogleAuthProvider.PROVIDER_ID,
          firebase.auth.FacebookAuthProvider.PROVIDER_ID,
          firebase.auth.TwitterAuthProvider.PROVIDER_ID,
          {
            provider: firebase.auth.EmailAuthProvider.PROVIDER_ID,
            // Whether the display name should be displayed in the Sign Up page.
            requireDisplayName: true
          },
          {
            provider: firebase.auth.PhoneAuthProvider.PROVIDER_ID,
            // Invisible reCAPTCHA with image challenge and bottom left badge.
            recaptchaParameters: {
              type: 'image',
              size: 'invisible',
              badge: 'bottomleft'
            }
          },
          firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID
        ],
        // Set to true if you only have a single federated provider like
        // firebase.auth.GoogleAuthProvider.PROVIDER_ID and you would like to
        // immediately redirect to the provider's site instead of showing a
        // 'Sign in with Provider' button first. In order for this to take
        // effect, the signInFlow option must also be set to 'redirect'.
        immediateFederatedRedirect: false,
        // tosUrl and privacyPolicyUrl accept either url string or a callback
        // function.
        // Terms of service url/callback.
        tosUrl: '<your-tos-url>',
        // Privacy policy url/callback.
        privacyPolicyUrl: function() {
          window.location.assign('<your-privacy-policy-url>');
        }
      };

      var ui = new firebaseui.auth.AuthUI(firebase.auth());
      // The start method will wait until the DOM is loaded.
      ui.start('#firebaseui-auth-container', uiConfig);
    </script>
  </head>
  <body>
    <!-- The surrounding HTML is left untouched by FirebaseUI.
         Your app may use that space for branding, controls and other customizations.-->
    <h1>Welcome to My Awesome App</h1>
    <div id="firebaseui-auth-container"></div>
    <div id="loader">Loading...</div>
  </body>
</html>

Upgrading anonymous users

Enabling anonymous user upgrade

When an anonymous user signs in or signs up with a permanent account, you want
to be sure the user can continue with what they were doing before signing up.
For example, an anonymous user might have items in their shopping cart.
At check-out, you prompt the user to sign in or sign up. After the user is
signed in, the user’s shopping cart should contain any items the user added
while signed in anonymously.

To support this behavior, FirebaseUI makes it easy to “upgrade” an anonymous
account to a permanent account. To do so, simply set autoUpgradeAnonymousUsers
to true when you configure the sign-in UI (this option is disabled by
default).

FirebaseUI links the new credential with the anonymous account using Firebase
Auth’s linkWithCredential method:

anonymousUser.linkWithCredential(permanentCredential);

The user will retain the same uid at the end of the flow and all data keyed
on that identifier would still be associated with that same user.

Anonymous user upgrade is also supported by email link sign-in in FirebaseUI.
An anonymous user triggering the email link option will, on return from clicking
the link, upgrade to an email link user.
However, forceSameDevice must be set to true in the email signInOption.
This is to ensure that when the user clicks the link, it is opened on the same
device/browser where the initial anonymous user exists.

Handling anonymous user upgrade merge conflicts

There are cases when a user, initially signed in anonymously, tries to
upgrade to an existing Firebase user. For example, a user may have signed up
with a Google credential on another device. When trying to upgrade to the
existing Google user, an error auth/credential-already-in-use will be thrown
by Firebase Auth as an existing user cannot be linked to another existing user.
No two users can share the same credential. In that case, both user data
have to be merged before one user is discarded (typically the anonymous user).
In the case above, the anonymous user shopping cart will be copied locally,
the anonymous user will be deleted and then the user is signed in with the
permanent credential. The anonymous user data in temporary storage will be
copied back to the non-anonymous user.

FirebaseUI will trigger the signInFailure callback with an error code
firebaseui/anonymous-upgrade-merge-conflict when the above occurs. The error
object will also contain the permanent credential.
Sign-in with the permanent credential should be triggered in the callback to
complete sign-in.
Before sign-in can be completed via
auth.signInWithCredential(error.credential), the data of the anonymous user
must be copied and the anonymous user deleted. After sign-in completion, the
data has to be copied back to the non-anonymous user. An example below
illustrates how this flow would work if user data is persisted using Firebase
Realtime Database.

Example:

// Temp variable to hold the anonymous user data if needed.
var data = null;
// Hold a reference to the anonymous current user.
var anonymousUser = firebase.auth().currentUser;
ui.start('#firebaseui-auth-container', {
  // Whether to upgrade anonymous users should be explicitly provided.
  // The user must already be signed in anonymously before FirebaseUI is
  // rendered.
  autoUpgradeAnonymousUsers: true,
  signInSuccessUrl: '<url-to-redirect-to-on-success>',
  signInOptions: [
    firebase.auth.GoogleAuthProvider.PROVIDER_ID,
    firebase.auth.FacebookAuthProvider.PROVIDER_ID,
    firebase.auth.EmailAuthProvider.PROVIDER_ID,
    firebase.auth.PhoneAuthProvider.PROVIDER_ID
  ],
  callbacks: {
    signInSuccessWithAuthResult: function(authResult, redirectUrl) {
      // Process result. This will not trigger on merge conflicts.
      // On success redirect to signInSuccessUrl.
      return true;
    },
    // signInFailure callback must be provided to handle merge conflicts which
    // occur when an existing credential is linked to an anonymous user.
    signInFailure: function(error) {
      // For merge conflicts, the error.code will be
      // 'firebaseui/anonymous-upgrade-merge-conflict'.
      if (error.code != 'firebaseui/anonymous-upgrade-merge-conflict') {
        return Promise.resolve();
      }
      // The credential the user tried to sign in with.
      var cred = error.credential;
      // If using Firebase Realtime Database. The anonymous user data has to be
      // copied to the non-anonymous user.
      var app = firebase.app();
      // Save anonymous user data first.
      return app.database().ref('users/' + firebase.auth().currentUser.uid)
          .once('value')
          .then(function(snapshot) {
            data = snapshot.val();
            // This will trigger onAuthStateChanged listener which
            // could trigger a redirect to another page.
            // Ensure the upgrade flow is not interrupted by that callback
            // and that this is given enough time to complete before
            // redirection.
            return firebase.auth().signInWithCredential(cred);
          })
          .then(function(user) {
            // Original Anonymous Auth instance now has the new user.
            return app.database().ref('users/' + user.uid).set(data);
          })
          .then(function() {
            // Delete anonymnous user.
            return anonymousUser.delete();
          }).then(function() {
            // Clear data in case a new user signs in, and the state change
            // triggers.
            data = null;
            // FirebaseUI will reset and the UI cleared when this promise
            // resolves.
            // signInSuccessWithAuthResult will not run. Successful sign-in
            // logic has to be run explicitly.
            window.location.assign('<url-to-redirect-to-on-success>');
          });

    }
  }
});

Multi-tenancy support

For GCIP customers, you can build
a tenant-specific sign-in page with FirebaseUI. Make sure you’ve enabled
multi-tenancy for your project and configured your tenants. See the
Multi-tenancy quickstart
to learn how.

This feature requires firebase
version 6.6.0 or higher.

To use FirebaseUI with multi-tenancy, you need to set the tenant ID on the
Auth instance being passed to FirebaseUI before calling ui.start().

// The Firebase Auth instance.
var auth = firebase.auth();
// Initialize FirebaseUI.
var ui = new firebaseui.auth.AuthUI(auth);
// Set the tenant ID on Auth instance.
auth.tenantId = selectedTenantId;
// Start the sign-in flow in selected tenant.
// All sign-in attempts will now use this tenant ID.
ui.start('#firebaseui-auth-container', selectedTenantConfig);

FirebaseUI only handles the sign-in flows for you, you will still need to build
your own UI to let the end users select a tenant to sign in with.
You can refer to the example in this
guide.

There is also a
quickstart
app available to demonstrate how to build a single sign-in page with the
FirebaseUI for two tenants which have different sets of identity providers
enabled.

Customizing FirebaseUI for authentication

Currently, FirebaseUI does not offer customization out of the box. However, the
HTML around the widget is not affected by it so you can display everything you
want around the widget container.

Advanced

FirebaseUI widget modes

Upon initialization, FirebaseUI will look for the mode parameter in the URL.
Depending on the value of this parameter, it will trigger a specific mode. When
no mode parameter is found, it will default to the sign-in mode.

You can change the name of this parameter with the queryParameterForWidgetMode
configuration parameter.

Query parameter value Description
?mode=select Sign-in mode

Example:

https://<url-of-the-widget>?mode=select

Overwriting the sign-in success URL

You can pass a query parameter to the widget’s URL that will overwrite the URL
the user is redirected to after a successful sign-in. If you do so, you must set
the configuration signInSuccessUrl value (even if it will be overwritten).
When passing the redirect URL this way, the signInSuccessWithAuthResult
callback will receive the value as the redirectUrl argument.

You must include the mode explicitly in the URL when using the
signInSuccessUrl parameter, otherwise FirebaseUI will directly redirect to the
URL specified.

You can change the name of this parameter with the
queryParameterForSignInSuccessUrl configuration parameter.

Example:

https://<url-of-the-widget>?mode=select&signInSuccessUrl=signedIn.html will
redirect the user to https://<url-of-the-widget>/signedIn.html after a
successful sign-in flow.

Developer Setup

Dependencies

To set up a development environment to build FirebaseUI from source, you must
have the following installed:

  • Node.js (>= 6.0.0)
  • npm (should be included with Node.js)
  • Java SE Runtime Environment 8

In order to run the demo and tests, you must also have:

  • Python (2.7)

Download the FirebaseUI source and its dependencies with:

git clone https://github.com/firebase/firebaseui-web.git
cd firebaseui-web
npm install

Building FirebaseUI

To build the library, run:

npm run build

This will create output files in the dist/ folder.

To build a localized JavaScript binary, run:

npm run build build-js-{LANGUAGE_CODE}

where {LANGUAGE_CODE} is replaced by the
code of the language you want. For example, the French binary
can be built with npm run build build-js-fr. This will create a binary
firebaseui__fr.js in the dist/ folder.

Build names for language codes with underscores, eg. zh_tw, zh_cn, pt_pt
will be mapped to zh-TW, xh-CN, pt-PT. The underscore will be replaced by
a hyphen symbol and the subsequent characters will be capitalized.

npm run build build-js-zh-TW

This will create a binary firebaseui__zh_tw.js in the dist/ folder.

To build a localized npm FirebaseUI module, run:

npm run build build-npm-{LANGUAGE_CODE}

Make sure all underscore symbols in the LANGUAGE_CODE are replaced with
dashes.
This will generate dist/npm__{LANGUAGE_CODE}.js.
You can then import/require it:

import firebaseui from './npm__{LANGUAGE_CODE}';

Build names for language codes with underscores, eg. zh_tw, zh_cn, pt_pt
will be mapped to zh-TW, xh-CN, pt-PT. The underscore will be replaced by
a hyphen symbol and the subsequent characters will be capitalized.

npm run build build-npm-zh-TW

This will create a binary npm__zh_tw.js in the dist/ folder.

To build a localized ES module of FirebaseUI, run:

npm run build build-esm-{LANGUAGE_CODE}

Make sure all underscore symbols in the LANGUAGE_CODE are replaced with
dashes.
This will generate dist/esm__{LANGUAGE_CODE}.js.
You can then import/require it:

import firebaseui from './esm__{LANGUAGE_CODE}';

Build names for language codes with underscores, eg. zh_tw, zh_cn, pt_pt
will be mapped to zh-TW, xh-CN, pt-PT. The underscore will be replaced by
a hyphen symbol and the subsequent characters will be capitalized.

npm run build build-esm-zh-TW

This will create a binary esm__zh_tw.js in the dist/ folder.

Running the demo app

To run the demo app, you must have a Firebase project set up on the
Firebase Console. Copy
demo/public/sample-config.js to demo/public/config.js:

cp demo/public/sample-config.js demo/public/config.js

Copy the data from the “Add Firebase to your web app” flow in Firebase Console.
Next, run

npm run demo

This will start a local server serving a FirebaseUI demo app with all local
changes. More details can be found in the demo app folder, covering
how to configure the app to be deployed on a Firebase Hosting instance.

Running unit tests.

All unit tests can be run on the command line (via PhantomJS) with:

npm test

Alternatively, the unit tests can be run manually by running

npm run serve

Then, all unit tests can be run at: http://localhost:4000/buildtools/all_tests.html
You can also run tests individually by accessing each HTML file under
generated/tests, for example: http://localhost:4000/generated/tests/javascript/widgets/authui_test.html

Run tests using SauceLabs

You need a SauceLabs account to run tests on
SauceLabs.

Go to your SauceLab account, under “My Account”, and copy paste the access key.
Now export the following variables, in two Terminal windows:

export SAUCE_USERNAME=<your username>
export SAUCE_ACCESS_KEY=<the copy pasted access key>

Then, in one Terminal window, start SauceConnect:

./buildtools/sauce_connect.sh

Take note of the “Tunnel Identifier” value logged in the terminal,at the top. In
the other terminal that has the exported variables, run the tests:

npm test -- --saucelabs --tunnelIdentifier=<the tunnel identifier>

IAP External Identities Support with FirebaseUI

You can use FirebaseUI to build the authentication page to use external
identities with
Google Cloud IAP.
The documentation can be found here.

Cordova Setup

Introduction

FirebaseUI sign-in widget supports Cordova applications. This includes
email/password and all OAuth providers (Google, Facebook, Twitter and GitHub).
Phone authentication is not supported due to the limitation in the underlying
Firebase core SDK.
Email link authentication is not yet supported due to the inability to detect
the incoming link when the user clicks it to complete sign-in.

Available providers

Provider Value
Google firebase.auth.GoogleAuthProvider.PROVIDER_ID
Facebook firebase.auth.FacebookAuthProvider.PROVIDER_ID
Twitter firebase.auth.TwitterAuthProvider.PROVIDER_ID
Github firebase.auth.GithubAuthProvider.PROVIDER_ID
Email and password firebase.auth.EmailAuthProvider.PROVIDER_ID
Anonymous firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID
Microsoft microsoft.com
Yahoo yahoo.com
SAML (GCIP only) saml.*********
OIDC (GCIP only) oidc.*********

Setup and Usage

In order to integrate FirebaseUI with your Cordova application, you need to
follow these steps:

  • Install the necessary Cordova plugins, make the necessary Firebase Console
    changes and update your config.xml file as documented in
    OAuth Sign-In for Cordova
  • After you have successfully configured your application, you can use
    FirebaseUI in your Cordova application just like any other traditional browser
    applications.

Keep in mind the following while you set up the app:

  • Only redirect signInFlow is supported as Firebase Auth does not support
    popup mode for Cordova.
  • firebase.auth.PhoneAuthProvider.PROVIDER_ID is not currently supported.
  • If you are providing a Content-Security-Policy make sure you add the
    appropriate exceptions for FirebaseUI resources (style-src, media-src,
    img-src, script-src, etc.) and underlying Firebase JS SDK.

React DOM Setup

In React DOM applications you can use the FirebaseUI Web React Wrapper.

Angular Setup

In Angular applications you can use this FirebaseUI Web Angular Wrapper from the community.

Known issues

Firebase Auth does not work in Safari private browsing

When a user has enabled the private browsing mode in Safari, the web storage is
disabled. This currently results in an error being thrown upon Firebase Auth
initialization. Therefore, when following the snippets above, FirebaseUI will
never get initialized and no UI will be displayed.

Tips for Single Page apps (UI Widget is already rendered on the page

warning)

When re-rendering the FirebaseUI Auth widget (for instance after signing in a
user, signing them out and trying to sign them in again), it will sometimes log a
warning:

UI Widget is already rendered on the page and is pending some user
interaction. Only one widget instance can be rendered per page. The previous
instance has been automatically reset.

This happens when the UI widget was in a pending state, i.e. the user was in the
middle of performing a sign-in flow. You should generally avoid re-rendering the
widget in the middle of an action, but if you do, to avoid the warning, you
should use the reset() method before re-rendering the widget.

Tips for initializing a new UI instance with the same Auth instance

When trying to initialize a new UI widget with the same Auth instance, you will
get an app/duplicate-app error. In general, you should keep a reference to
the AuthUI instance and instead call reset() and then start(...) again to
re-render the widget.

If you don’t keep a reference to that AuthUI instance, you can get the reference
by calling firebaseui.auth.AuthUI.getInstance(appId) where appId is the same
as the optional one used to initialize the AuthUI instance. If none was provided
just call firebaseui.auth.AuthUI.getInstance().

This is the recommended way but you also have the option to delete the AuthUI
instance by calling ui.delete() which returns a promise that resolves on
successful deletion. You can then initialize a new UI instance with the same
Auth instance without getting the app/duplicate-app error. At any time, you
can only have one AuthUI instance with the same appId or the same Auth
instance.

FirebaseUI is broken in IE11 when deployed on a local server accessed

through localhost (but works when deployed on a remote server)

Several developers reported issues with IE11 when testing the widget integration
on a server deployed locally, accessing the application through a localhost
address. However, it doesn’t impact applications deployed on a server (as you
can verify in the demo app).

Release Notes

Latest: https://github.com/firebase/firebaseui-web/releases/latest

For v1.0.0 and superior: https://github.com/firebase/firebaseui-web/releases

6.0.0

FirebaseUI-web v6.0.0 is intended to be used alongside Firebase JS SDK v9 or v10 compat.

If using the CDN, change your Firebase imports to:

<script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-app-compat.js"></script>
<script src="https://www.gstatic.com/firebasejs/10.0.0/firebase-auth-compat.js"></script>

If NPM:

import firebase from 'firebase/compat/app';
import 'firebase/compat/auth';

See the Firebase upgrade guide for more information.

5.0.0

accountchooser.com has been operating in “universal opt-out” mode and was
shutdown on July 2021. FirebaseUI-web has stopped supporting this credential
helper and since version v5.0.0, all related configurations and enums have been
removed.

  • If you are using firebaseui.auth.CredentialHelper.ACCOUNT_CHOOSER_COM,
    you need to switch to firebaseui.auth.CredentialHelper.NONE or
    firebaseui.auth.CredentialHelper.GOOGLE_YOLO. Follow the instruction on
    one-tap sign-up when switching to the latter.
  • If you are configuring acUiConfig in the UI configurations, this is no
    longer supported and should not be used.
  • firebaseui.auth.FederatedSignInOption#authMethod is no longer required to
    be provided by the latest
    one-tap API.

0.5.0

See the milestone 0.5.0
for the issues covered in this release. Below is a summary of the most important
ones:

  • FirebaseUI now supports Single Page Application: a reset method was
    added to allow to dispose of the widget. When the user leaves a page where the
    FirebaseUI widget was rendered (for instance in the componentWillUnmount
    method of a React component), call the reset method of the
    firebaseui.auth.AuthUI instance you created. Also, call the reset method
    before rendering again the widget if one has already been rendered on the
    page. Please refer to the demo app for guidance on how to use
    FirebaseUI in a Single Page Application context.
  • Custom scopes can now be added for each provider. See
    Configure OAuth providers.
  • Several issues, different but related to the displayName not being present
    after sign up with email and password, have been fixed.
  • A new config parameter has been added: signInFlow. It allows to specify
    whether the Identity Providers sign in flows should be done through redirect
    (the default) or popup. See Sign In Flows.