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/**
 * Bug fix for the issue described at the link below.
 * @link https://community.adobe.com/t5/indesign/extendscript-oddity-with-file-folder-on-mac-os-x/m-p/3887816?page=1#M165105
 */
function fixVolumePathBug(filepath) {
    if ($.os.toLowerCase().indexOf('mac') === -1) return filepath;

    var $HOME = new Folder('~/').fsName;

    if (filepath.indexOf($HOME) > 0) {

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/*
 * Iterative search.
 * Big-O = O(logN)
 */
const binarySearch = (haystack, needle) => {

    let start = 0,
        end   = haystack.length - 1;

    /*

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/**
 * Partitions array into halves.
 * O(log n) Big-O notation
 * @param items
 * @param left
 * @param right
 * @returns {*}
 */
const partition = (items, left, right) => {

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/**
 * Recursively split, sort, and re-merge the array.
 * @param unsortedArray
 * @returns {*[]|*}
 * 
 * Big-O:
 * 
 * Space complexity : O(n)
 * Time complexity  : O(n Log n)
 */

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/**
 * Converts a flat array to a tree with runtime O(n)
 *
 * Big-O : O(n)
 *
 * This algorithm was taken from Phillip Stanislaus's "Performant Array to Tree"
 * which has O(n) complexity. It builds the tree in a single pass.
 * @link https://github.com/philipstanislaus
 * @link https://www.npmjs.com/package/performant-array-to-tree
 * @see https://github.com/iconifyit/30-Days-of-Algorithms

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/**
 * Bubble sort.
 * @param a
 * @returns {*}
 *
 * Big-O : O(n2)
 *
 * From wikipedia:
 *      Bubble sort has a worst-case and average complexity of О(n2), where n is the number of
 *      items being sorted. Most practical sorting algorithms have substantially better worst-case

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/**
 * Find shared elements between two lists.
 * @param   {array} x
 * @param   {array} y
 * @returns {[]}
 */
const shared_items = ( x, y ) => {

    x.sort();
    y.sort();

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/**
 * This algorithm finds a missing number in an array of numbers from 1 - N.
 * This approach only works if there is one-and-only-one missing number,
 * and no duplicate numbers. There are other algorithms for those cases
 * which I will cover on a different day.
 *
 * Given : a is a list of positive integers from 1 - N
 * Given : a contains all unique numbers
 * Given : a has one-and-only-one missing number
 * Given : n == a.length

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/**
 * Euclid's algorithm for Greatest Common Divisor.
 * @param {int} m
 * @param {int} n
 * @returns {string|number}
 *
 * Given : 0 < n < m
 *
 * 1. Divide m by n. If the remainder is 0, GCD is n.
 * 2. m <-- n, n <-- r

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/**
 * The main function.
 * @param s
 * @returns {boolean}
 */
function isNumber(s) {

    s = s.trim();

    var chars = new Set(s);