function getTokens(rawString) {
  // NB: `.filter(Boolean)` removes any falsy items from an array
  return rawString.toLowerCase().split(/[ ,!.";:-]+/).filter(Boolean).sort();
}


// counting the amount of time a word/character pops up and sorting them and to show which word/character comes up the most.


function mostFrequentWord(text) {
  let words = getTokens(text);
  let wordFrequencies = {};

  // putting the strings into a loop and counting the frequency of the words/characters in the string or leaving them as 1 if the character
    only comes up once

  for (let i = 0; i <= words.length; i++) {
    if (words[i] in wordFrequencies) {
      wordFrequencies[words[i]]++;
    } else {
      wordFrequencies[words[i]] = 1;
    }
  }
  // starting from index 0 and adding the counts to wordFrequencies.

  let currentMaxKey = Object.keys(wordFrequencies)[0];
  let currentMaxCount = wordFrequencies[currentMaxKey];

//making currentMaxKey equal the count of "word" and equalling the total into the frequencies and then returning the currentMaxKey.

  for (let word in wordFrequencies) {
    if (wordFrequencies[word] > currentMaxCount) {
      currentMaxKey = word;
      currentMaxCount = wordFrequencies[word];
    }
  }
  return currentMaxKey;
}