find specific word and their count in array object in javascript

gistfile1.txt

const object1 = {
  a: 'NO',
  b: 'NO',
  c: 'Yes',
  d: 'NO',
};

//console.log(Object.values(object1));

function getWordCount(array) {
  let map = {};
  for (let i = 0; i < array.length; i++) {
    let item = array[i];
    map[item] = (map[item] + 1) || 1;
  }
  return map.NO;
  
}

console.log(getWordCount(Object.values(object1)));