Currently you can only add blocking functions for User signup and User sign in. I want to be able to add a Blocking function for User Reset password.

This way I can customize password requirements at the API level and implement features in Cloud functions + Firestore such as preventing previous password reuse.

I would have used Cloud Functions + Firestore for my Blocking function, but because this feature didn't exist I ultimately decided to move my auth password checks to my AWS hosted backend API.