Bubble sort in ES6

bubbleSort.js

/**
 * Bubble sort
 * @param {array} arr - Array of numbers
 */
const bubbleSort = (arr = []) => {
  const length = arr.length;

  for (let i = 0; i < length; i++) {
    for (let j = 0; j < length - i; j++) {
      const tmp = arr[j + 1];

      if (tmp < arr[j]) {
        arr[j + 1] = arr[j];
        arr[j] = tmp;
      }
    }
  }
};