const syncBody = (resolve: any, reject: any) => {
    console.log("sync body start")
    resolve("ok")
    console.log("sync body end")
  }
  const asyncBody = (resolve: any, reject: any) => {
    console.log("async body start")
    setTimeout(() => {
      console.log("timeout start")
      resolve("ok")
      console.log("timeout end")
    }, 1000)
    console.log("async body end")
  }

  console.log("create promise start")
  let p = new Promise((resolve, reject) => {
    console.log("promise body start")
    syncBody(resolve, reject)
    console.log("promise body end")
  })
  console.log("create promise end")

  console.log("specify promise.then start")
  p.then((x) => {
    console.log("resolved", x)
  })
  console.log("specify promise.then end")