[SuperZen]

const obj = [
  { time: 1000, foo: () => console.log(1) },
  {
    time: 500, foo: () => {
      console.log(2)
    }
  }
]
obj.reduce(async (p, { foo, time }) => {
  await p
  return new Promise(res => setTimeout(() => (foo(), res()), time))
}, Promise.resolve())