Count Words

reduce-count-words

function reducer(acc, currentValue, currentIndex, arr) {
  acc[currentValue] = (acc[currentValue]+1) || 1;
  return acc;
}

function countWords(arrOfWords) {
  return arrOfWords.reduce(reducer, {});
}

const mapCounts = countWords(["hello", "world", "hello", "dogs", "hello", "cats"], reducer, {});

console.log(mapCounts);