google-api-nodejs-client is not fetching details - node.js

Question

I am using google-api-nodejs-client oauth2.js and console is not showing any errors but no profile details are getting fetched of the signed in user in console. Here, is my code where "Hey there.2" is the last line that is getting displayed in console. Can someone point me the incorrect part?
I have included oauth2.keys.json in the directory.
Edit: I just found that Hey there.3 got displayed but after a very big time interval.
'use strict';
const fs = require('fs');
const path = require('path');
const http = require('http');
const url = require('url');
const opn = require('opn');
const destroyer = require('server-destroy');
const {google} = require('googleapis');
const plus = google.plus('v1');
console.log("Hey there.1");
/**
* To use OAuth2 authentication, we need access to a a CLIENT_ID, CLIENT_SECRET, AND REDIRECT_URI. To get these credentials for your application, visit https://console.cloud.google.com/apis/credentials.
*/
const keyPath = path.join(__dirname, 'oauth2.keys.json');
let keys = {redirect_uris: ['']};
if (fs.existsSync(keyPath)) {
keys = require(keyPath).web;
}
/**
* Create a new OAuth2 client with the configured keys.
*/
const oauth2Client = new google.auth.OAuth2(
keys.client_id,
keys.client_secret,
keys.redirect_uris[0]
);
/**
* This is one of the many ways you can configure googleapis to use authentication credentials.
In this method, we're setting a global reference for all APIs.
Any other API you use here, like google.drive('v3'), will now use this auth client.
You can also override the auth client at the service and method call levels.
*/
google.options({auth: oauth2Client});
/**
* Open an http server to accept the oauth callback.
The only request to our webserver is to /callback?code=<code>
*/
async function authenticate(scopes) {
return new Promise((resolve, reject) => {
// grab the url that will be used for authorization
const authorizeUrl = oauth2Client.generateAuthUrl({
access_type: 'offline',
scope: scopes.join(' '),
});
console.log("Hey there.2");
const server = http
.createServer(async (req, res) => {
try {
console.log("Hey there.3");
if (req.url.indexOf('google') > -1) {
//const qs = querystring.parse(url.parse(req.url).query);
const qs = new url.URL(req.url).searchParams;
res.end('Authentication successful! Please return to the console.');
server.destroy();
//const {tokens} = await oauth2Client.getToken(qs.code);
const {tokens} = await oauth2Client.getToken(qs.get('code'));
oauth2Client.credentials = tokens;
resolve(oauth2Client);
console.log("Hey there.4");
}
} catch (e) {
console.log(e);
reject(e);
}
})
.listen(3000, () => {
// open the browser to the authorize url to start the workflow
opn(authorizeUrl, {wait: false}).then(cp => cp.unref())
;
});
destroyer(server);
});
}
async function runSample() {
// retrieve user profile
const res = await plus.people.get({userId: 'me'});
console.log(res.data);
console.log("Hey there.5");
console.log(userId);
}
const scopes = ['https://www.googleapis.com/auth/plus.login'];
authenticate(scopes)
.then(client => runSample(client))
.catch(console.error);