Bubble sorting algorithm in JavaScript

bubblesort.algo.js

/**
 * Bubble sorting algorithm in JavaScript.
 * 
 * Here i'm using arrow function and ES6, but you can use native function and ES5 instead.
 *
 * @param {array} arr Unsorted Array
 * @return {array}
 */
const bubbleSort = arr => {
  let swapped;
  do {
    swapped = false;
    for (let index = 0; index < arr.length; index++) {
      if (arr[index] > arr[index + 1]) {
        let tmp = arr[index];
        arr[index] = arr[index + 1];
        arr[index + 1] = tmp;
        swapped = true;
      }
    }
  } while (swapped);
  return arr;
};