I am using passport-google-oauth and I need to get the refreshToken. It normally returns undefined.

app.get(
  "/auth/google",
  passport.authenticate("google", {
    scope: [
      "https://www.googleapis.com/auth/userinfo.profile",
      "https://www.googleapis.com/auth/userinfo.email",
    ],
    prompt: "consent",
  })
);

I've browsed the internet, and there were old solutions of adding accessType: "offline". But it seems like in this version of passport there is no accessType. What do?