Accessing SoundCloud HTTP API by Node.js (> 7.x)

index.js

/*
  References:
    https://developers.soundcloud.com/docs/api/guide
    https://developers.soundcloud.com/docs/api/reference
*/

const fetch = require('node-fetch');
const readline = require('readline');
const FormData = require('form-data');
const util = require('util');

(async function main(){

  let rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });

  let formData = new FormData();
  formData.append('grant_type', 'password');
  for (let name of ['client_id', 'client_secret', 'username', 'password']) {
    formData.append(name, await ask(name + ': ', rl));
  }

  rl.close();

  let tokenResp = await fetch('https://api.soundcloud.com/oauth2/token',
                         { method: 'POST', body: formData });
  let tokenJson = await tokenResp.json();
  let accessToken = tokenJson.access_token;

  let activitiesResp = await fetch('https://api.soundcloud.com/me/activities?oauth_token=' + accessToken);
  let activities = await activitiesResp.json();

  console.log('Result: ');
  console.log(util.inspect(activities, { depth: null }));
})();

function ask(message, rl){
  return new Promise(function(resolve, reject) {
    rl.question(message, function(answer){
      resolve(answer);
    });
  });
}

package.json

{
  "name": "soundcloud-node-example",
  "version": "1.0.0",
  "description": "Accessing SoundCloud HTTP API by Node.js (> 7.x)",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "45deg",
  "license": "WTFPL",
  "dependencies": {
    "form-data": "^2.2.0",
    "node-fetch": "^1.7.1"
  }
}