@capacitor-firebase/authentication

@capacitor-firebase/authentication

⚡️ Capacitor plugin for Firebase Authentication.

Installation

npm install @capacitor-firebase/authentication firebase
npx cap sync

Add Firebase to your project if you haven't already (Android / iOS / Web).

On iOS, verify that this function is included in your app's AppDelegate.swift:

func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
  return ApplicationDelegateProxy.shared.application(app, open: url, options: options)
}

The further installation steps depend on the selected authentication method:

• Apple Sign-In
• Facebook Sign-In
• GitHub Sign-In
• Google Sign-In
• Microsoft Sign-In
• Play Games Sign-In
• Twitter Sign-In
• Yahoo Sign-In
• Phone Number Sign-In
• Custom Token Sign-In

Attention: Please note that this plugin uses third-party SDKs to offer native sign-in. These SDKs can initialize on their own and collect various data. Here you can find more information.

Configuration

These configuration values are available:

Prop	Type	Description	Default
skipNativeAuth	boolean	Configure whether the plugin should skip the native authentication. Only needed if you want to use the Firebase JavaScript SDK. Only available for Android and iOS.	false
providers	string[]	Configure which providers you want to use so that only the providers you need are fully initialized. If you do not configure any providers, they will be all initialized. Please note that this does not prevent the automatic initialization of third-party SDKs. Only available for Android and iOS.	["apple.com", "facebook.com", "github.com", "google.com", "microsoft.com", "playgames.google.com", "twitter.com", "yahoo.com", "phone"]

Examples

In capacitor.config.json:

{
  "plugins": {
    "FirebaseAuthentication": {
      "skipNativeAuth": false,
      "providers": ["apple.com", "google.com"]
    }
  }
}

In capacitor.config.ts:

/// <reference types="@capacitor/firebase-authentication" />

import { CapacitorConfig } from '@capacitor/cli';

const config: CapacitorConfig = {
  plugins: {
    FirebaseAuthentication: {
      skipNativeAuth: false,
      providers: ["apple.com", "google.com"],
    },
  },
};

export default config;

Demo

A working example can be found here: robingenz/capacitor-firebase-authentication-demo

Usage

import { FirebaseAuthentication } from '@capacitor-firebase/authentication';

const getCurrentUser = async () => {
  const result = await FirebaseAuthentication.getCurrentUser();
  return result.user;
};

const getIdToken = async () => {
  const result = await FirebaseAuthentication.getIdToken();
  return result.token;
};

const setLanguageCode = async () => {
  await FirebaseAuthentication.setLanguageCode({ languageCode: 'en-US' });
};

const signInWithApple = async () => {
  await FirebaseAuthentication.signInWithApple();
};

const signInWithFacebook = async () => {
  await FirebaseAuthentication.signInWithFacebook();
};

const signInWithGithub = async () => {
  await FirebaseAuthentication.signInWithGithub();
};

const signInWithGoogle = async () => {
  await FirebaseAuthentication.signInWithGoogle();
};

const signInWithMicrosoft = async () => {
  await FirebaseAuthentication.signInWithMicrosoft();
};

const signInWithPlayGames = async () => {
  await FirebaseAuthentication.signInWithPlayGames();
};

const signInWithPhoneNumber = async () => {
  const { verificationId } = await FirebaseAuthentication.signInWithPhoneNumber(
    {
      phoneNumber: '123456789',
    },
  );
  const verificationCode = window.prompt(
    'Please enter the verification code that was sent to your mobile device.',
  );
  await FirebaseAuthentication.signInWithPhoneNumber({
    verificationId,
    verificationCode,
  });
};

const signInWithTwitter = async () => {
  await FirebaseAuthentication.signInWithTwitter();
};

const signInWithYahoo = async () => {
  await FirebaseAuthentication.signInWithYahoo();
};

const signOut = async () => {
  await FirebaseAuthentication.signOut();
};

const useAppLanguage = async () => {
  await FirebaseAuthentication.useAppLanguage();
};

API

• getCurrentUser()
• getIdToken(...)
• setLanguageCode(...)
• signInWithApple(...)
• signInWithFacebook(...)
• signInWithGithub(...)
• signInWithGoogle(...)
• signInWithMicrosoft(...)
• signInWithPlayGames(...)
• signInWithTwitter(...)
• signInWithYahoo(...)
• signInWithPhoneNumber(...)
• signInWithCustomToken(...)
• signOut()
• useAppLanguage()
• useEmulator(...)
• addListener('authStateChange', ...)
• removeAllListeners()
• Interfaces
• Type Aliases

getCurrentUser()

getCurrentUser() => Promise<GetCurrentUserResult>

Fetches the currently signed-in user.

Returns: Promise<GetCurrentUserResult>

---

getIdToken(...)

getIdToken(options?: GetIdTokenOptions | undefined) => Promise<GetIdTokenResult>

Fetches the Firebase Auth ID Token for the currently signed-in user.

Param	Type
options	GetIdTokenOptions

Returns: Promise<GetIdTokenResult>

---

setLanguageCode(...)

setLanguageCode(options: SetLanguageCodeOptions) => Promise<void>

Sets the user-facing language code for auth operations.

Param	Type
options	SetLanguageCodeOptions

---

signInWithApple(...)

signInWithApple(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Apple sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithFacebook(...)

signInWithFacebook(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Facebook sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithGithub(...)

signInWithGithub(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the GitHub sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithGoogle(...)

signInWithGoogle(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Google sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithMicrosoft(...)

signInWithMicrosoft(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Microsoft sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithPlayGames(...)

signInWithPlayGames(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Play Games sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithTwitter(...)

signInWithTwitter(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Twitter sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithYahoo(...)

signInWithYahoo(options?: SignInOptions | undefined) => Promise<SignInResult>

Starts the Yahoo sign-in flow.

Param	Type
options	SignInOptions

Returns: Promise<SignInResult>

---

signInWithPhoneNumber(...)

signInWithPhoneNumber(options: SignInWithPhoneNumberOptions) => Promise<SignInWithPhoneNumberResult>

Starts the sign-in flow using a phone number.

Either the phone number or the verification code and verification ID must be provided.

Only available for Android and iOS.

Param	Type
options	SignInWithPhoneNumberOptions

Returns: Promise<SignInWithPhoneNumberResult>

---

signInWithCustomToken(...)

signInWithCustomToken(options: SignInWithCustomTokenOptions) => Promise<SignInResult>

Starts the Custom Token sign-in flow.

This method cannot be used in combination with skipNativeAuth on Android and iOS. In this case you have to use the signInWithCustomToken interface of the Firebase JS SDK directly.

Param	Type
options	SignInWithCustomTokenOptions

Returns: Promise<SignInResult>

---

signOut()

signOut() => Promise<void>

Starts the sign-out flow.

---

useAppLanguage()

useAppLanguage() => Promise<void>

Sets the user-facing language code to be the default app language.

---

useEmulator(...)

useEmulator(options: UseEmulatorOptions) => Promise<void>

Instrument your app to talk to the Authentication emulator.

Param	Type
options	UseEmulatorOptions

---

addListener('authStateChange', ...)

addListener(eventName: 'authStateChange', listenerFunc: AuthStateChangeListener) => Promise<PluginListenerHandle> & PluginListenerHandle

Listen for the user's sign-in state changes.

Param	Type
eventName	'authStateChange'
listenerFunc	AuthStateChangeListener

Returns: Promise<PluginListenerHandle> & PluginListenerHandle

---

removeAllListeners()

removeAllListeners() => Promise<void>

Remove all listeners for this plugin.

---

Interfaces

GetCurrentUserResult

Prop	Type	Description
user	User | null	The currently signed-in user, or null if there isn't any.

User

Prop	Type
displayName	string | null
email	string | null
emailVerified	boolean
isAnonymous	boolean
phoneNumber	string | null
photoUrl	string | null
providerId	string
tenantId	string | null
uid	string

GetIdTokenResult

Prop	Type	Description
token	string	The Firebase Auth ID token JWT string.

GetIdTokenOptions

Prop	Type	Description
forceRefresh	boolean	Force refresh regardless of token expiration.

SetLanguageCodeOptions

Prop	Type	Description
languageCode	string	BCP 47 language code. Example: en-US.

SignInResult

Prop	Type	Description
user	User | null	The currently signed-in user, or null if there isn't any.
credential	AuthCredential | null	Credentials returned by an auth provider.

AuthCredential

Prop	Type	Description
providerId	string	The authentication provider ID for the credential. Example: google.com.
accessToken	string	The OAuth access token associated with the credential if it belongs to an OAuth provider.
idToken	string	The OAuth ID token associated with the credential if it belongs to an OIDC provider.
secret	string	The OAuth access token secret associated with the credential if it belongs to an OAuth 1.0 provider.
nonce	string	The random string used to make sure that the ID token you get was granted specifically in response to your app's authentication request.

SignInOptions

Prop	Type	Description
customParameters	SignInCustomParameter[]	Configures custom parameters to be passed to the identity provider during the OAuth sign-in flow.

SignInCustomParameter

Prop	Type	Description
key	string	The custom parameter key (e.g. login_hint).
value	string	The custom parameter value (e.g. [e-mail]).

SignInWithPhoneNumberResult

Prop	Type	Description
verificationId	string	The verification ID, which is needed to identify the verification code.

SignInWithPhoneNumberOptions

Prop	Type	Description
phoneNumber	string	The phone number to be verified.
verificationId	string	The verification ID which will be returned when signInWithPhoneNumber is called for the first time. The verificationCode must also be provided.
verificationCode	string	The verification code from the SMS message. The verificationId must also be provided.

SignInWithCustomTokenOptions

Prop	Type	Description
token	string	The custom token to sign in with.

UseEmulatorOptions

Prop	Type	Description
host	string	The emulator host (e.g. 10.0.2.2).
port	number	The emulator host (e.g. 9099). Default: 9099

PluginListenerHandle

Prop	Type
remove	() => Promise<void>

AuthStateChange

Prop	Type	Description
user	User | null	The currently signed-in user, or null if there isn't any.

Type Aliases

AuthStateChangeListener

Callback to receive the user's sign-in state change notifications.

(change: AuthStateChange): void

FAQ

1. What does this plugin do?
   This plugin enables the use of Firebase Authentication in a Capacitor app. It uses the Firebase SDK for Java (Android), Swift (iOS) and JavaScript.
2. What is the difference between the web implementation of this plugin and the Firebase JS SDK?
   The web implementation of this plugin encapsulates the Firebase JS SDK and enables a consistent interface across all platforms. You can decide if you prefer to use the web implementation or the Firebase JS SDK.
3. What is the difference between the native and web authentication?
   For web authentication, the Firebase JS SDK is used. This only works to a limited extent on Android and iOS in the WebViews (see here). For native authentication, the native SDKs from Firebase, Google, etc. are used. These offer all the functionalities that the Firebase JS SDK also offers on the web. However, after a login with the native SDK, the user is only logged in on the native layer of the app. If the user should also be logged in on the web layer, additional steps are required (see here).
4. How can I use this plugin with the Firebase JavaScript SDK?
   See here.

Changelog

See CHANGELOG.md.

License

See LICENSE.

Credits

This plugin is based on the Capacitor Firebase Authentication plugin. Thanks to everyone who contributed to the project!