Make a synchroneous request in NodeJS - node.js

Question

I am trying to make a post request using NodeJS and request.
I tried using promises and the async/await like other post says but I can manage to make work.
const express = require('express');
const bodyParser = require('body-parser');
var request = require("request");
const app = express();
app.use(bodyParser.json());
var token = '';
process.env["NODE_TLS_REJECT_UNAUTHORIZED"] = 0;
function postRequest(options) {
request(options, function (error, response, body) {
if (error) throw new Error(error);
token = (JSON.parse(body)).access_token;
console.log(token + 'tet');
return (token);
});
}
async function requestToken() {
var options = {
method: 'POST',
url: 'https://simplivity#xxxx/api/oauth/token',
headers: { 'Content-Type': 'application/json' },
formData:
{
grant_type: 'password',
username: 'administrator#vsphere.local',
password: 'xxxx'
}
};
try {
var test = await postRequest(options)
return (test);
} catch (error) {
console.error(error);
}
}
var test = requestToken();
console.log(test + 'TOT');
This is the answer :
[object Promise]TOT
00bd0beb-8967-4534-8c63-2e5d0d6876d4tet
Which should be the opposite.
thank you for your help.

Answer 1

(async () => {
var test = await requestToken();
console.log(test + 'TOT');
})();
While not very tidy something like this should work.
Better:
requestToken()
.then(response => {
console.log(response);
});

Answer 2

You need to return a promise.
Change your postRequest to:
function postRequest(options) {
return new Promise(function(resolve, reject) {
request(options, function (error, response, body) {
if (error) throw new Error(error);
token = (JSON.parse(body)).access_token;
console.log(token + 'tet');
resolve(token);
});
});
}