Подсчет избыточности ответов в массиве

const input =  [
  {_id: "5ca8b8ca0f1b2f54646ded9a", question: "Do you like it ?", answer: "yes"},
  {_id: "5ca8b8ca0f1b2f54646ded99", question: "Do you like it ?", answer: "no"},
  {_id: "5ca8b8f80f1b2f54646deda1", question: "Where are you ?", answer: "home"},
  {_id: "5ca8b8f80f1b2f54646deda0", question: "Where are you ?", answer: "home"}
];

const groupByQuestionAndAnswers = Object.values(input.reduce((accu, {question, answer}) => {
  if (!accu[question]) 
    accu[question] = {question};
  if (!accu[question][answer]) 
    accu[question][answer] = {answer, count: 0};
  accu[question][answer].count += 1;

  return accu;
}, {}));

const output = groupByQuestionAndAnswers.map(({question, ...res}) => {
  return {question, answers: Object.values(res)};
});

console.info(output);

const data = [
{_id: "5ca8b8ca0f1b2f54646ded9a", question: "Do you like it ?", answer: "yes"},
{_id: "5ca8b8ca0f1b2f54646ded99", question: "Do you like it ?", answer: "no"},
{_id: "5ca8b8f80f1b2f54646deda1", question: "Where are you ?", answer: "home"},
{_id: "5ca8b8f80f1b2f54646deda0", question: "Where are you ?", answer: "home"}
];

const res = data.reduce((acc, {question, answer}) => {
 qFound = acc.find(qa => qa.question === question);
 if (qFound){ 
   ansFound = qFound.answers.find(ans => ans.answer === answer);
   if (ansFound){
      ansFound.count = ansFound.count + 1;
   }else{
      qFound.answers.push({answer, count:1});
   }
 }else{
   acc.push({
     question,
     answers: [].concat({answer, count: 1})
  });
 }
 return acc;
},[]);
console.info(res);