How to correctly update an object with values ​​from different inputs?

Question

React

const [user, setUser] = useState({})
const reg = (e) => {
  const {name, value} = e.target
  setUser(user[name] = value)
}

<input
  name='name'
  onChange={reg}
  value={user.name} />
<input 
        name='surname'
  onChange={reg}
  value={user.surname} />

How to correctly update an object with values ​​from different inputs?

Answer 1

setUser({ ...user, [name]: value })