const delay = (ms) => new Promise((resolve, reject) => setTimeout(() => resolve('Vika'), ms));
function* likeAsync () {
  console.log(1);
  console.log(yield 1.5);
  let res1 = yield delay(2000);
  console.log(2, res1);
  let res2 = yield delay(2000);
  console.log(3, res2);
  try {
    console.log(yield fetch("http://localhost:10000"));
 }
 catch (e) {
   console.log('generator error catch', e);
 }
 let res3 = yield delay(2000);
  console.log(4, res3);
  
  let res4 = yield delay(2000);
  console.log(5, res4);
}



function run (gena) {
  let iter = gena();
  function next(result, error) {
  let value;
  let done;

  if (error) {
    const errGen = iter.throw(error);
    value = errGen.value;
    done =  errGen.done;
    }
  if(!error) { 
    const resultGen = iter.next(result);
    value = resultGen.value;
    done =  resultGen.done;
  }
  if (done) {return};
   
  if(value && typeof value?.then === 'function'){
      value.then(next, err => next(undefined, err))
  } else {
      next(value);
    }
  }
  next();
}

run(likeAsync);