Async Loop Example

async-loops.js

const sleep = async ms => new Promise(
  resolve => setTimeout(() => {
    console.log('~~~ Slept for', ms, 'ms')
    resolve()
  }, ms)
)

const of = async range => {
  for (const ms of range) {
    await sleep(ms)
  }
}

const map = async range => {
  await range.map(async ms => sleep(ms))
}

const main = async () => {
  const range = [...Array(5).keys()].map(val => val * 500)

  await of(range)
  await map(range)
}

main()