That example uses the passport Twitch strategy.
A brief read of the passportJS docs it seems that it doesn’t support it.
As per my example(s)
You just add force_verify=true to the URL you redirect the user to Twitch with
So
https://id.twitch.tv/oauth2/authorize?client_id=MyClientID&redirect_uri=MyRredict&response_type=code&scope=SCOPES
becomes
https://id.twitch.tv/oauth2/authorize?client_id=MyClientID&redirect_uri=MyRredict&response_type=code&force_verify=true&scope=SCOPES