function getTokens(rawString) {
  // NB: `.filter(Boolean)` removes any falsy items from an array
  return rawString.toLowerCase().split(/[ ,!.";:-]+/).filter(Boolean).sort();
}
    //Changing the string to all lower-case, putting spaces(?) between common possible symbols and characters, then filters by Boolean items only (so no symbols), then sorts alphabetically and returns it. //

function mostFrequentWord(text) {
    //Pulls array/items from above?

let words = getTokens(text);
  let wordFrequencies = {};
      //Makes an object called wordFrequencies, then starts building a loop that goes over the array from getTokens

  for (let i = 0; i <= words.length; i++) {
    if (words[i] in wordFrequencies) {
      wordFrequencies[words[i]]++;
    } else {
      wordFrequencies[words[i]] = 1;
    }
    //If a word in wordFrequencies appears more than once, ups value of word[i] by one. If hasn’t seen before, logs it as word[i]=1
  }

let currentMaxKey = Object.keys(wordFrequencies)[0];
    //Makes array called currentMaxKey, made of keys from wordFrequencies.

  let currentMaxCount = wordFrequencies[currentMaxKey];
    //Makes an obj currentMaxCount is contains the most common key and the number of times it appears

  for (let word in wordFrequencies) {
    if (wordFrequencies[word] > currentMaxCount) {
      currentMaxKey = word;
      currentMaxCount = wordFrequencies[word];
    }
        //Makes a loop that checks if a word in wordFrequencies appears more than the currentMaxCount. If so, changes that word key and its frequency to the new currentMaxCount. The word then becomes the currentMaxKey.
  }
  return currentMaxKey;
      //Displays most common word in the text
}