Migrating to Firebase Auth firebase@12.17.0
Version firebase@12.17.0 introduces 1 breaking change. This guide details how to update your code.
Released: 7/30/2026
1
Breaking Changes
1
Migration Steps
5
Affected Symbols
⚠️ Check Your Code
If you use any of these symbols, you need to read this guide:
initializeAppCheckVertexAIBackendAgentPlatformBackendFirestoreSettingsFirebaseErrorBreaking Changes
●Issue #1
The ability to call `initializeAppCheck` without a `provider` has been removed. You must now provide a provider when initializing App Check.
Migration Steps
- 1When initializing App Check, ensure you provide a `provider` to `initializeAppCheck`.
Release Summary
This release introduces text-to-speech capabilities and updates the AI backend naming convention. It also includes a change to Firestore's HTTP/2 flow control and removes the ability to initialize App Check without a provider.
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View the full release notes and all changes for Firebase Auth firebase@12.17.0.
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