manifold/web/hooks/use-user.ts

import { useEffect, useState } from 'react'
import { listenForLogin, User } from '../lib/firebase/users'

export const useUser = () => {
  const [user, setUser] = useState<User | null>(null)

  useEffect(() => {
    return listenForLogin(setUser)
  }, [])

  return user
}