GeneratorAsync1.js

function asyncTask(count, gen) {
  setTimeout(() => {
    gen.next(count);
  }, 1000);
}

const generator = (function* () {
  let count = 0;
  console.log(yield asyncTask(count++, generator));
  console.log(yield asyncTask(count++, generator));
  console.log("complete");
})();

generator.next();

/*
0
1
complete
*/