nodemailer bug

oops.js

const nodemailer = require('nodemailer');

var asd = nodemailer.createTransport({
    service:'Gmail',
        auth: {
            type: 'OAuth2',
            user: "ASDASD",
            serviceClient: "ASDASD",
            private_key: "ASDASD",
            access_token: "ASDASD",
            refresh_token: "ASDASD",
            expires: 3600
        }
    });