node-example async await

/* ignore the first 50 lines */

import {execSync} from 'child_process';

const ImageModule = {
  resize: function(data) {
    execSync('sleep 1');
    return "resized data";
  }
}
const File = {
  getFile: function(src) {
    return new Promise((resolve, reject) => {
      setTimeout(function(){
        resolve("image data");
      }, 0);
    });
  },
  saveFile: function(data, dst) {
    return new Promise((resolve, reject) => {
      setTimeout(function(){
        resolve(true);
      }, 0);
    });
  }
}
const TwitterAPI = {
  getProfile: function(username) {
    return new Promise((resolve, reject) => {
      setTimeout(function(){
        resolve({username: 'bjelline', followers: [1,2,3]});
      }, 0);
    });
  },
};

const Model = {
  setFollowers: function(username, followers) {
    return new Promise((resolve, reject) => {
      setTimeout(function(){
          resolve(true);
      }, 0);
    });
  },
};





/*                            */
/*  example code starts here  */
/*                            */

async function fetchTwitterFollowers(username) {
  const profile = await TwitterAPI.getProfile(username);
  await Model.setFollowers(profile.username, profile.followers);
  return profile.followers.length;
}
async function createThumbnail(src, dest) {
  const fileData = await File.getFile(src);
  const newImage = ImageModule.resize(fileData);
  await File.saveFile(newImage, dest);
  return true;
}

const [number, success] = await Promise.all([
  fetchTwitterFollowers('fhsalzburg'),
  createThumbnail('/tmp/files/fhsalzburg.png', '/data/fhsalzburg.png')
]);

console.log("number of followers", number);
console.log("and thumbnail created? " +  (success ? "yes" : "no"));