Check if user exists in Firestore

Question

I\'d like to create a users database in Cloud Firestore, with the email as the unique ID for each user. The users should be in a collection, and each user is a

Answer 1

Task result has a field named AdditionalUserInfo, you can find here isNewUser. it will return false if the user already exists.

  if (task.result?.additionalUserInfo!!.isNewUser){
         addNewUser()
    } else {
         updateUser()
  }