Word Tracker JS Fundamentals

function wordsTracker(arr) {
  const wordsToFind = arr.shift().split(' ');
  const wordCounts = {};

  arr.forEach(sentence => {
    wordsToFind.forEach(word => {
      const wordsInSentence = sentence.split(' ');
      const count = wordsInSentence.reduce((acc, curr) => {
        if (curr === word) {
          return acc + 1;
        }
        return acc;
      }, 0);
      wordCounts[word] = (wordCounts[word] || 0) + count;
    });
  });

  const sortedCounts = Object.entries(wordCounts)
    .sort((a, b) => b[1] - a[1]);

  const output = sortedCounts
    .map(([word, count]) => `${word} - ${count}`)
    .join('\n');

  console.log(output);
}