FacebookAuthProvider class

Provider for generating an OAuthCredential for ProviderId.FACEBOOK.

Signature:

export declare class FacebookAuthProvider extends BaseOAuthProvider

Extends: BaseOAuthProvider

Constructors

Constructor Modifiers Description
(constructor)() Constructs a new instance of the FacebookAuthProvider class

Properties

Property Modifiers Type Description
FACEBOOK_SIGN_IN_METHOD static 'facebook.com' Always set to SignInMethod.FACEBOOK.
PROVIDER_ID static 'facebook.com' Always set to ProviderId.FACEBOOK.

Methods

Method Modifiers Description
credential(accessToken) static Creates a credential for Facebook.
credentialFromError(error) static Used to extract the underlying OAuthCredential from a AuthError which was thrown during a sign-in, link, or reauthenticate operation.
credentialFromResult(userCredential) static Used to extract the underlying OAuthCredential from a UserCredential.

FacebookAuthProvider.(constructor)

Constructs a new instance of the FacebookAuthProvider class

Signature:

constructor();

FacebookAuthProvider.FACEBOOK_SIGN_IN_METHOD

Always set to SignInMethod.FACEBOOK.

Signature:

static readonly FACEBOOK_SIGN_IN_METHOD: 'facebook.com';

FacebookAuthProvider.PROVIDER_ID

Always set to ProviderId.FACEBOOK.

Signature:

static readonly PROVIDER_ID: 'facebook.com';

FacebookAuthProvider.credential()

Creates a credential for Facebook.

Signature:

static credential(accessToken: string): OAuthCredential;

Parameters

Parameter Type Description
accessToken string Facebook access token.

Returns:

OAuthCredential

Example

// `event` from the Facebook auth.authResponseChange callback.
const credential = FacebookAuthProvider.credential(event.authResponse.accessToken);
const result = await signInWithCredential(credential);

FacebookAuthProvider.credentialFromError()

Used to extract the underlying OAuthCredential from a AuthError which was thrown during a sign-in, link, or reauthenticate operation.

Signature:

static credentialFromError(error: FirebaseError): OAuthCredential | null;

Parameters

Parameter Type Description
error FirebaseError

Returns:

OAuthCredential | null

FacebookAuthProvider.credentialFromResult()

Used to extract the underlying OAuthCredential from a UserCredential.

Signature:

static credentialFromResult(userCredential: UserCredential): OAuthCredential | null;

Parameters

Parameter Type Description
userCredential UserCredential The user credential.

Returns:

OAuthCredential | null

Example 1

// Sign in using a redirect.
const provider = new FacebookAuthProvider();
// Start a sign in process for an unauthenticated user.
provider.addScope('user_birthday');
await signInWithRedirect(auth, provider);
// This will trigger a full page redirect away from your app

// After returning from the redirect when your app initializes you can obtain the result
const result = await getRedirectResult(auth);
if (result) {
  // This is the signed-in user
  const user = result.user;
  // This gives you a Facebook Access Token.
  const credential = FacebookAuthProvider.credentialFromResult(result);
  const token = credential.accessToken;
}

Example 2

// Sign in using a popup.
const provider = new FacebookAuthProvider();
provider.addScope('user_birthday');
const result = await signInWithPopup(auth, provider);

// The signed-in user info.
const user = result.user;
// This gives you a Facebook Access Token.
const credential = FacebookAuthProvider.credentialFromResult(result);
const token = credential.accessToken;