How to get refreshToken?

[francsiswanto]

Hi,

I need help please. When I try this example, I can not get refreshToken from verify() function.
Right now I'm using this scripts to get refreshToken but still no luck.

passport.use(new GoogleStrategy({}, verify(issuer, profile, context, idToken, accessToken, refreshToken, cb) {
  ....
})

Above script result: refreshToken is undefined.

Thank you.