JAVASCRIPT

convert promise to generator js

function count(n){
  var res = []
  for (var x = 0; x < n; x++) {
    res.push(x)
  }
  return res
}

for (var x of count(5)) {
  console.log(x)
}

convert promise to generator js

function* count(){
  for (var x = 0; true; x++) {
    yield x
  }
}

for (var x of count()) {
  console.log(x)
}