Top Shot user-hook

user_hook.js

import * as fcl from "@onflow/fcl"
import { useState, useEffect } from 'react';

export function useCurrentUser() {
  const [user, setUser] = useState(null);
  useEffect(() => {
    fcl.currentUser().subscribe(setUser)
  }, []);
  return {
    currentUser: user,
    logOut: fcl.unauthenticate,
    logIn: fcl.logIn,
    signUp: fcl.signUp,
  }
}