async_await.js

#!/usr/bin/env node

const highFive = () => new Promise((res, rej) => {
  res('clap!');
});

(async function() {
  // 1. correct but prefer syntax 2
  await highFive()
      .then((res) => {
        console.log(res);
      })
      .catch((err) => {
        console.error(err);
      });

  // 2.
  try {
    console.log(await highFive());
  } catch (e) {
    console.error(err);
  }

  // 3.
  highFive().then(res => {console.log(res)});
  console.log('get executed before "clap!" just above.');

  // 4.
  console.log(await highFive());
  console.log('get executed after the "clap!" just above.')
})()