// The getTokens function is a filtering function with the arguement rawstring. It will return an array
of lowercase data elements that splits on a sequence of one or more commas or whitespace so that it will not
produce empty elements in the results. This function serves to perform the matching of a pattern or a
search and replace.//

function getTokens(rawString) {
  // NB: `.filter(Boolean)` removes any falsy items from an array //This will remove any null, 0, or Nan value from the array or string//
  return rawString.toLowerCase().split(/[ ,!.";:-]+/).filter(Boolean).sort(); // .sort function sorts array by alphabetical order//
}

//The mostFrequentWord function assigns when called the getTokens array to the variable words.
Below that is a new object for word frequency count called wordFrequencies. A for loop that will run and reference
  what "i" is which is the first text in the string that will return. They start at 0 not 1 and if the
  condition of less than or equal to words.length the value will be incremented and run immediately.
//

function mostFrequentWord(text) {
  let words = getTokens(text);
  let wordFrequencies = {};
  for (let i = 0; i <= words.length; i++) {
    if (words[i] in wordFrequencies) {
      wordFrequencies[words[i]]++;
    } else {
      wordFrequencies[words[i]] = 1;
    }
  }
  let currentMaxKey = Object.keys(wordFrequencies)[0];
  let currentMaxCount = wordFrequencies[currentMaxKey];

  for (let word in wordFrequencies) {
    if (wordFrequencies[word] > currentMaxCount) {
      currentMaxKey = word;
      currentMaxCount = wordFrequencies[word];
    }
  }
  return currentMaxKey;
}
// The script wil return the currentMaxKey and we will have the word used most.