yeonwooz/promise_all.ts

## promise_all.ts
async function usePromiseAll() {
  console.time('a')
  const res1 = bar(5)
  const res2 = car(res1)
  const res = await Promise.all([res1, res2])

  console.log(res)
  console.timeEnd('a')   // 2000ms
}

usePromiseAll()
	async function usePromiseAll() {
	console.time('a')
	const res1 = bar(5)
	const res2 = car(res1)
	const res = await Promise.all([res1, res2])

	console.log(res)
	console.timeEnd('a') // 2000ms
	}

	usePromiseAll()