I'm trying to set up a Next JS app with iron-session and a 'remember me' function, whereby if the user ticks the remember me box on the login form then the maxAge of the iron-session cookie is set to a week rather than my default value of 24 hours.

However, I can't work out a way to set the value programatically. I've tried the following but I get 'rememberMe not defined' on the ternary.

export default withIronSessionApiRoute(
  async function loginRoute(req, res) {
    const { username, password, rememberMe } = req.body;
    await req.session.save();
    return res.status(200).send('Logged in');
  },
  {
    cookieName: 'DEMOAUTH',
    password: 'PmsDH2Hm09rP7XRJkuo7TKDQXtowtBjurW66RUzU',
    ttl: rememberMe ? 60 * 60 * 24 * 7 : 60 * 60 * 24,
  }
);

EDIT following Jesse's comment - I tweaked slightly, adding a const rememberMe = true to check the value was definitely being set and I get the same behaviour

export default withIronSessionApiRoute(
  async function loginRoute(req, res) {
    const { username, password } = req.body;
    const rememberMe = true;
    await req.session.save();
    return res.status(200).send('Logged in');
  },
  {
    cookieName: 'DEMOAUTH',
    password: 'PmsDH2Hm09rP7XRJkuo7TKDQXtowtBjurW66RUzU',
    ttl: rememberMe ? 60 * 60 * 24 * 7 : 60 * 60 * 24,
  }
);