feat(core): Support google one tap sign in

packages/core/package.json

@@ -52,6 +52,7 @@
     "zod": "catalog:"
   },
   "devDependencies": {
+    "@types/google-one-tap": "^1.2.6",
     "@types/jsdom": "catalog:",
     "firebase": "catalog:",
     "jsdom": "catalog:",
@@ -60,7 +61,7 @@
     "tsup": "catalog:",
     "typescript": "catalog:",
     "vite": "catalog:",
-    "vitest-tsconfig-paths": "catalog:",
-    "vitest": "catalog:"
+    "vitest": "catalog:",
+    "vitest-tsconfig-paths": "catalog:"
   }
 }

packages/core/src/auth.ts

@@ -21,16 +21,17 @@ import {
   sendSignInLinkToEmail as _sendSignInLinkToEmail,
   signInAnonymously as _signInAnonymously,
   signInWithPhoneNumber as _signInWithPhoneNumber,
+  signInWithCredential as _signInWithCredential,
   ActionCodeSettings,
   ApplicationVerifier,
   AuthProvider,
   ConfirmationResult,
   EmailAuthProvider,
   linkWithCredential,
   PhoneAuthProvider,
-  signInWithCredential,
   signInWithRedirect,
   UserCredential,
+  AuthCredential,
 } from "firebase/auth";
 import { getBehavior, hasBehavior } from "./behaviors";
 import { FirebaseUIConfiguration } from "./config";
@@ -63,14 +64,14 @@ export async function signInWithEmailAndPassword(
 
     if (hasBehavior(ui, "autoUpgradeAnonymousCredential")) {
       const result = await getBehavior(ui, "autoUpgradeAnonymousCredential")(ui, credential);
-      
+
       if (result) {
         return handlePendingCredential(ui, result);
       }
     }
 
     ui.setState("pending");
-    const result = await signInWithCredential(ui.auth, credential);
+    const result = await _signInWithCredential(ui.auth, credential);
     return handlePendingCredential(ui, result);
   } catch (error) {
     handleFirebaseError(ui, error);
@@ -138,7 +139,7 @@ export async function confirmPhoneNumber(
     }
 
     ui.setState("pending");
-    const result = await signInWithCredential(ui.auth, credential);
+    const result = await _signInWithCredential(ui.auth, credential);
     return handlePendingCredential(ui, result);
   } catch (error) {
     handleFirebaseError(ui, error);
@@ -193,7 +194,7 @@ export async function signInWithEmailLink(
     }
 
     ui.setState("pending");
-    const result = await signInWithCredential(ui.auth, credential);
+    const result = await _signInWithCredential(ui.auth, credential);
     return handlePendingCredential(ui, result);
   } catch (error) {
     handleFirebaseError(ui, error);
@@ -235,6 +236,31 @@ export async function signInWithProvider(ui: FirebaseUIConfiguration, provider:
   }
 }
 
+export async function signInWithCredential(
+  ui: FirebaseUIConfiguration,
+  credential: AuthCredential
+): Promise<UserCredential> {
+  try {
+    if (hasBehavior(ui, "autoUpgradeAnonymousCredential")) {
+      const userCredential = await getBehavior(ui, "autoUpgradeAnonymousCredential")(ui, credential);
+
+      // If they got here, they're either not anonymous or they've been linked.
+      // If the credential has been linked, we don't need to sign them in, so return early.
+      if (userCredential) {
+        return handlePendingCredential(ui, userCredential);
+      }
+    }
+
+    ui.setState("pending");
+    const result = await _signInWithCredential(ui.auth, credential);
+    return handlePendingCredential(ui, result);
+  } catch (error) {
+    handleFirebaseError(ui, error);
+  } finally {
+    ui.setState("idle");
+  }
+}
+
 export async function completeEmailLinkSignIn(
   ui: FirebaseUIConfiguration,
   currentUrl: string