async - await looping in node.js

const request = require('request');

function callRemoteApi(url) {
  return new Promise((resolve, reject) => {
    console.log('Fetching', url);
    request(url, (err, res) => {
      if (err) {
        return reject(err);
      }
      console.log('Got', url);
      const result = JSON.parse(res.body).url;
      resolve(result);
    });
  });
}

async function runTest() {
  const urls = [
    'https://httpbin.org/delay/5',
    'https://httpbin.org/delay/1',
    'https://httpbin.org/delay/3',
  ];
  await forLoopExample(urls);
  await promiseAllExample(urls);
  console.log('Done with all examples.');
}

async function forLoopExample(urls) {
  console.log('Run for loop example');
  let promises = [];
  for (let url of urls) {
    console.log(await callRemoteApi(url));
  }
  console.log('Done for loop example\n');
}


async function promiseAllExample(urls) {
  console.log('Run promise.all example');
  let promises = [];
  for (let url of urls) {
    promises.push(callRemoteApi(url));
  };
  await Promise.all(promises)
    .then(result => console.log('Result of all promises:', result))
  console.log('Done promise.all example.\n');
}

runTest();