npm run import -- "minimize xpath"

var importer = require('../Core');
var {selectDom} = importer.import("select tree");

function minXpath(combinations, ctx) {
    // flatten the XPath stack using '/'
    // sort by smallest and return shortest path matching 1 DOM element
    const minimal = combinations
            .filter(c => selectDom([`.//${c}`], ctx).length === 1)
            .sort((a, b) => a.length - b.length);
    return minimal[ 0 ];

    // TODO: prioritize by button/input, ids, classes, attributes? (extra credit), index
}

module.exports = {
    minXpath
};

What the code could have been:

// Import necessary modules
const { selectTree } = require('../Core');

/**
 * Finds the shortest XPath that matches exactly one DOM element.
 * 
 * @param {string[]} combinations - An array of XPath combinations
 * @param {object} ctx - The DOM context
 * @returns {string} The shortest XPath that matches exactly one DOM element
 */
function minXpath(combinations, ctx) {
    // Filter out XPaths that match more than one element
    const matchingXPaths = combinations.filter((xpath) => {
        const elements = selectTree([`.//${xpath}`], ctx);
        return elements.length === 1;
    });

    // Prioritize XPaths that match specific elements (e.g. buttons, inputs, IDs, classes)
    const priortizedXPaths = matchingXPaths.sort((a, b) => {
        // Prioritize XPaths that match specific elements (e.g. buttons, inputs, IDs, classes)
        const aPriority = getPriority(a, ctx);
        const bPriority = getPriority(b, ctx);
        return aPriority - bPriority;
    });

    // Return the shortest prioritized XPath
    return priortizedXPaths.sort((a, b) => a.length - b.length)[0];
}

// Helper function to get the priority of an XPath
function getPriority(xpath, ctx) {
    // Check if the XPath matches a button, input, ID, class, or attribute
    if (isButtonOrInput(xpath, ctx)) return 10;
    if (isIdOrClass(xpath, ctx)) return 5;
    if (isAttribute(xpath, ctx)) return 2;
    // Default priority
    return 0;
}

// Helper functions to check if an XPath matches a specific element type
function isButtonOrInput(xpath, ctx) {
    const elements = selectTree([`.//${xpath}`], ctx);
    return elements.some((element) => element.tagName === 'BUTTON' || element.tagName === 'INPUT');
}

function isIdOrClass(xpath, ctx) {
    const elements = selectTree([`.//${xpath}`], ctx);
    return elements.some((element) => element.id || element.classList.length > 0);
}

function isAttribute(xpath, ctx) {
    const elements = selectTree([`.//${xpath}`], ctx);
    return elements.some((element) => Object.keys(element.attributes).length > 0);
}

module.exports = { minXpath };

var importer = require('../Core');
var {selectDom} = importer.import('select tree');

function minXpath(combinations, ctx) {
    //...
}

const minimal = combinations
       .filter(c => selectDom([`.//${c}`], ctx).length === 1)
       .sort((a, b) => a.length - b.length);
return minimal[0];

module.exports = {
    minXpath
};