id_token_hint.js

var TokenSet
passport.use('oidc', new Strategy({client}, (tokenSet, userinfo, done)=>{
        TokenSet = tokenSet;
        return done(null, tokenSet.claims());
    })
)
//And on logout we can set the id_token_hint parameter
app.get('/logout', (req, res) => {
    res.redirect(client.endSessionUrl({
        id_token_hint: TokenSet.id_token
    }
    ));
});