Shuffle Array

shuffle.js

const shuffle = arr => {
  var i, j, temp;
  arr = arr.slice();
  i = arr.length;
  if (i === 0) {
    return arr;
  }
  while (--i) {
    j = Math.floor(Math.random() * (i + 1));
    temp = arr[i];
    arr[i] = arr[j];
    arr[j] = temp;
  }
  return arr;
}
export default shuffle;