var google = require('googleapis').google;
var OAuth2 = google.auth.OAuth2;
var oauth2Client = new OAuth2();
oauth2Client.setCredentials({access_token: 'ACCESS TOKEN HERE'});
var oauth2 = google.oauth2({
auth: oauth2Client,
version: 'v2'
});
oauth2.userinfo.get(
function(err, res) {
if (err) {
console.log(err);
} else {
console.log(res);
}
});