add provider_credential snippets for the social Idps that don't have it.

auth-next/facebook.js

@@ -163,3 +163,12 @@ function authWithCredential(credential) {
     });
   // [END auth_facebook_signin_credential]
 }
+
+function facebookProviderCredential(accessToken) {
+  // [START auth_facebook_provider_credential]
+  const { FacebookAuthProvider } = require("firebase/auth");
+
+  const credential = FacebookAuthProvider.credential(accessToken);
+  // [END auth_facebook_provider_credential]
+}
+

auth-next/google-signin.js

@@ -157,4 +157,13 @@ function isUserEqual_wrapper() {
   // [END auth_google_checksameuser]
 }
 
+function googleProviderCredential(idToken) {
+  // [START auth_google_provider_credential]
+  const { GoogleAuthProvider } = require("firebase/auth");
+
+  const credential = GoogleAuthProvider.credential(idToken);
+  // [END auth_google_provider_credential]
+}
+
+
 

auth-next/twitter.js

@@ -73,3 +73,10 @@ function twitterSignInRedirectResult() {
   // [END auth_twitter_signin_redirect_result]
 }
 
+function twitterProviderCredential(accessToken, secret) {
+  // [START auth_twitter_provider_credential]
+  const { TwitterAuthProvider } = require("firebase/auth");
+
+  const credential = TwitterAuthProvider.credential(accessToken, secret);
+  // [END auth_twitter_provider_credential]
+}

auth/facebook.js

@@ -151,3 +151,9 @@ function authWithCredential(credential) {
     });
   // [END auth_facebook_signin_credential]
 }
+
+function facebookProviderCredential(accessToken) {
+  // [START auth_facebook_provider_credential]
+  var credential = firebase.auth.FacebookAuthProvider.credential(accessToken);
+  // [END auth_facebook_provider_credential]
+}

auth/google-signin.js

@@ -142,3 +142,9 @@ function isUserEqual(googleUser, firebaseUser) {
   return false;
 }
 // [END auth_google_checksameuser]
+
+function googleProviderCredential(idToken) {
+  // [START auth_google_provider_credential]
+  var credential = firebase.auth.GoogleAuthProvider.credential(idToken);
+  // [END auth_google_provider_credential]
+}

auth/initialization.txt

@@ -0,0 +1,9 @@
+<script src="https://www.gstatic.com/firebasejs/x.x.x/firebase.js"></script>
+<script>
+// Initialize Auth
+const config = {
+  apiKey: "...",
+  authDomain: "my-app-12345.firebaseapp.com"
+};
+firebase.initializeApp(config);
+</script>

auth/multi-tenancy.js

@@ -23,7 +23,7 @@ function switchTenantSingleAuth() {
   // [END multitenant_switch_tenant]
 }
 
-function switchTenantMultiAuthInstance(config) {
+function switchTenantMultiAuth(config) {
   // [START multitenant_switch_tenant_multiinstance]
   // Multiple Auth instances
   firebase.initializeApp(config, 'app1_for_tenantId1');

auth/twitter.js

@@ -76,3 +76,9 @@ function twitterSignInRedirectResult() {
     });
   // [END auth_twitter_signin_redirect_result]
 }
+
+function twitterProviderCredential(accessToken, secret) {
+  // [START auth_twitter_provider_credential]
+  var credential = firebase.auth.TwitterAuthProvider.credential(accessToken, secret);
+  // [END auth_twitter_provider_credential]
+}

snippets/auth-next/facebook/auth_facebook_provider_credential.js

@@ -0,0 +1,11 @@
+// This snippet file was generated by processing the source file:
+// ./auth-next/facebook.js
+//
+// To update the snippets in this file, edit the source and then run
+// 'npm run snippets'.
+
+// [START auth_facebook_provider_credential_modular]
+import { FacebookAuthProvider } from "firebase/auth";
+
+const credential = FacebookAuthProvider.credential(accessToken);
+// [END auth_facebook_provider_credential_modular]

snippets/auth-next/google-signin/auth_google_provider_credential.js

@@ -0,0 +1,11 @@
+// This snippet file was generated by processing the source file:
+// ./auth-next/google-signin.js
+//
+// To update the snippets in this file, edit the source and then run
+// 'npm run snippets'.
+
+// [START auth_google_provider_credential_modular]
+import { GoogleAuthProvider } from "firebase/auth";
+
+const credential = GoogleAuthProvider.credential(idToken);
+// [END auth_google_provider_credential_modular]

snippets/auth-next/twitter/auth_twitter_provider_credential.js

@@ -0,0 +1,11 @@
+// This snippet file was generated by processing the source file:
+// ./auth-next/twitter.js
+//
+// To update the snippets in this file, edit the source and then run
+// 'npm run snippets'.
+
+// [START auth_twitter_provider_credential_modular]
+import { TwitterAuthProvider } from "firebase/auth";
+
+const credential = TwitterAuthProvider.credential(accessToken, secret);
+// [END auth_twitter_provider_credential_modular]