feat(auth): Add support for OpenID Connect provider

packages/auth/ios/RNFBAuth/RNFBAuthModule.m

@@ -980,6 +980,10 @@ - (FIRAuthCredential *)getCredentialForProvider:(NSString *)provider
     credential = [FIROAuthProvider credentialWithProviderID:@"oauth"
                                                     IDToken:authToken
                                                 accessToken:authTokenSecret];
+  } else if ([provider hasPrefix:@"oidc."] ) {
+    credential = [FIROAuthProvider credentialWithProviderID:provider
+                                                    IDToken:authToken
+                                                   rawNonce:nil];
   } else {
     DLog(@"Provider not yet handled: %@", provider);
   }

packages/auth/lib/index.js

@@ -34,6 +34,7 @@ import FacebookAuthProvider from './providers/FacebookAuthProvider';
 import GithubAuthProvider from './providers/GithubAuthProvider';
 import GoogleAuthProvider from './providers/GoogleAuthProvider';
 import OAuthProvider from './providers/OAuthProvider';
+import OIDCProvider from './providers/OIDCProvider';
 import PhoneAuthProvider from './providers/PhoneAuthProvider';
 import TwitterAuthProvider from './providers/TwitterAuthProvider';
 import AppleAuthProvider from './providers/AppleAuthProvider';
@@ -50,6 +51,7 @@ const statics = {
   TwitterAuthProvider,
   FacebookAuthProvider,
   OAuthProvider,
+  OIDCProvider,
   PhoneAuthState: {
     CODE_SENT: 'sent',
     AUTO_VERIFY_TIMEOUT: 'timeout',

packages/auth/lib/providers/OIDCProvider.js

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2016-present Invertase Limited & Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this library except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+const providerId = 'oidc.';
+
+export default class OAuthProvider {
+  constructor() {
+    throw new Error('`new OAuthProvider()` is not supported on the native Firebase SDKs.');
+  }
+
+  static get PROVIDER_ID() {
+    return providerId;
+  }
+
+  static credential(oidcSuffix, idToken, accessToken) {
+    return {
+      token: idToken,
+      secret: accessToken,
+      providerId: providerId + oidcSuffix,
+    };
+  }
+}