Make something streamlike out of an asynchronous call

streamishExample.js

function makeStreamyThing(array, delayInterval){
	var newStreamyThing = array.map((element, index) => {
		  return callback => setTimeout(() => {
        callback(element)
      }, (index + 1) * delayInterval)
    })
	return newStreamyThing
}

fetch('https://www.omdbapi.com/?s=batman')
  .then((res) => res.json())
  .then(data => {movieData = makeStreamyThing(data.Search, 500).map(fn => {
	    fn(console.log)
	  })
  })
  .catch((err) => {console.error(err)})