I'm trying the wrap my head around the Client Credentials Flow of Spotify API and in their documentation they have this way to get the Access Token:

var client_id = 'CLIENT_ID';
var client_secret = 'CLIENT_SECRET';

const authOptions = {
  url: "https://accounts.spotify.com/api/token",
  headers: {
    "Authorization":
      "Basic " +
      new Buffer.from(clientID + ":" + clientSecret).toString("base64"),
    "Content-Type": "application/x-www-form-urlencoded",
  },
  form: {
    grant_type: "client_credentials",
  },
  json: true,
};

request.post(authOptions, function(error, response, body) {
  if (!error && response.statusCode === 200) {
    var token = body.access_token;
  }
});

Now I'm trying to get that token and export or use it in the API calls but whatever I do, I cannot access that statement.

Putting the POST into a variable or function and calling it results in undefined.

This is what I'm trying to achieve:

import authOptions from "./credentials.js";
import pkg from "request";
const { post } = pkg;

const Spotify = {
  getAccessToken() {
    post(authOptions, function (error, response, body) {
      if (!error && response.statusCode === 200) {
        const token = body.access_token;
        return token;
      }
    });
  },

  async search(input) {
    const accessToken = Spotify.getAccessToken();
    const response = await fetch(
      `https://api.spotify.com/v1/search?q=${input}&type=artist`,
      {
        headers: {
          "Authorization": `Bearer ${accessToken}`,
          "Content-Type": "application/json",
        },
      }
    );
    const data = await response.json();
    console.log(data);
  },
};

export default Spotify;

Yet of course there's no Access Token returned from that post request.

Is there any way I can convert that piece of code into Async/Await?