I tried setting the username and then reading it in a session in the client side in the following code but it gives an error:

import { useSession } from "vinxi/http";

function getSession() {
  return useSession({
    password: process.env.SESSION_SECRET
  });
}

export default function Index() {
  const session = getSession();
  session.data.user = "adam"; //set the user name
  const username : string = session.data.user //get the user name
  
  return (
    <div>
      <p>Username: {username}</p>
    </div>
  );
}