Не могу получить promise response [дубликат]

function  getFinePlanDateTo() { 
  let from = new Date(), workingDates = [] 
  let lastDay; 
  getResult(from, workingDates, lastDay).then((resp)=>{ 
    console.log("resp", resp) // здесь не та дата 
  }); 
} 
         
         
function getResult (from, workingDates, lastDay) { 
  from = new Date(from.setDate(from.getDate() + 1)); 
  return isWorkingDay(from).then(function (result) { 
    if (result && result.working) { 
      workingDates.push(from); 
      lastDay = workingDates[workingDates.length - 1]; 
    } 
    if (workingDates.length < 3) { 
      getResult(from, workingDates, lastDay); 
 
    } else { 
      console.log(lastDay) // здесь дата верная, ее надо вернуть 
      return lastDay 
    } 
    return lastDay 
 
  }) 
 
} 
 
 function isWorkingDay(day) { //сервис, который возвращает объект типа {working:true/false} 
   return service.workingDay(day).then(function (result) {  
    return result 
  }) 
 
}