How to use random-seed

function getRandom(arr, seed) {
  var rand = gen.create(seed);
  return arr[Math.floor(rand.random() * (arr.length - 1))];
}

const scrambleWord = (word) => {
 if (word.length <= 3) {
  return word;
 }

 const random = create(word.toLowerCase());

 const newWord = word.split('');
 const firstLetter = newWord.shift();
 const lastLetter = newWord.pop();

 for (let i = 0; i < word.length; i += 1) {
  const from = random(word.length);
  const to = random(word.length);
  newWord.splice(to, 0, newWord.splice(from, 1)[0]);
 }

 newWord.unshift(firstLetter);
 newWord.push(lastLetter);

 return newWord.join('');
}