fallbackRule with Mutation return type

[brielov]

Hi, I have a login mutation which returns a User. I have a fallbackRule set to isLoggedIn and the login mutation set to allow but when I run the mutation I get unauthorized cause of User using the fallback rule. How can I allow the user to be returned only for the login mutation?

shield({
  Mutation: {
    login: allow // this returns unauthorized because of the fallbackRule!
  },
  User: allow // I don't want to do this
}, {
  fallbackRule: isLoggedIn
})