How to bulk delete Firebase anonymous users

Question

Due to my probable misuse of anonymous authentication (see How to prevent Firebase anonymous user token from expiring) I have a lot of anonymous users in my app that I don\'

Answer 1

The Firebase Admin SDK can also delete multiple users at once.

Here is Node.js sample.

admin.auth().deleteUsers([uid1, uid2, uid3])
  .then(deleteUsersResult => {
    console.log('Successfully deleted ' + deleteUsersResult.successCount + ' users');
    console.log('Failed to delete ' +  deleteUsersResult.failureCount + ' users');
    deleteUsersResult.errors.forEach(err => {
      console.log(err.error.toJSON());
    });
  })
  .catch(error => {
    console.log('Error deleting users:', error);
  });

Notice: there is a limitation as list all users. The maximum number of users allowed to be deleted is 1000 per batch.