Selection sort in ES6

selectionSort.js

/**
 * Find the index of the smallest element of the array
 * @param {array} list - Array of numbers
 * @returns {number} - Index
 */
const findMinItemIndex = list => {
  let minIndex = 0;
  let minItem = list[0];
  const length = list.length;

  for (let i = 1; i < length; i++) {
    if (list[i] < minItem) {
      minIndex = i;
      minItem = list[i];
    }
  }

  return minIndex;
};

/**
 * Selection sort
 * @param {array} list - Array of numbers
 * @returns {array} - Sorted array
 */
const selectionSort = list => {
  const newList = [];
  const length = list.length;

  for (let i = 0; i < length; i++) {
    const minIndex = findMinItemIndex(list);

    newList.push(list.splice(minIndex, 1)[0]);
  }

  return newList;
};