SOURCE

function sleep(time){
    console.log('insilde sleep')
    return new Promise((resolve)=>{ settimeout(resolve,time)})
}

console.log('sleep')
await sleep(2000)
console.log('sleep2')

(async function() {
  console.log('Do some thing, ' + new Date());
  await sleep(3000);
  console.log('Do other things, ' + new Date());
})();