Extensive Stylelint config file for LESS syntax based on config-recommended with rules and declarations ordering

stylelint.config.js

const orderedPropertyHash = require('css-property-sort-order-smacss');

/** @type {string[]} List of CSS properties */
const orderedPropertyList = [];

Object.values(orderedPropertyHash).forEach(listOrListOfLists => {
    listOrListOfLists.forEach(propertyOrList => {
        if (Array.isArray(propertyOrList)) {
            orderedPropertyList.push(...propertyOrList);
        } else {
            orderedPropertyList.push(propertyOrList);
        }
    });
});

const always = 'always';
const never = 'never';
const alwaysSingleLine = 'always-single-line';

const typeOrder = [
    'at-variables',
    'dollar-variables',
    'custom-properties',
    'declarations',
    'rules'
    //'at-rules' - doesn't work well with less mixins
];

/** @type {Object} Stylelint config object */
const config = {
    extends: 'stylelint-config-recommended',
    plugins: [
        'stylelint-order'
    ],
    ignoreFiles: [],
    rules: {
        'at-rule-no-unknown': null,
        'at-rule-empty-line-before': [
            'always', {
                except: ['first-nested'],
                ignore: ['after-comment', 'blockless-after-blockless'],
                ignoreAtRules: ['if', 'else']
            }
        ],
        indentation: [
            4, {
                ignore: ['inside-parens']
            }
        ],
        'order/order': typeOrder,
        'order/properties-order': orderedPropertyList,
        'string-quotes': null, //single is breaking CSS syntax for some reason
        'length-zero-no-unit': true,
        'max-empty-lines': 2,
        'max-line-length': 120,
        'no-eol-whitespace': true,
        'no-missing-end-of-source-newline': true,
        'unit-case': 'lower',
        'color-hex-case': 'upper',
        'color-hex-length': 'short',
        linebreaks: 'unix',
        'selector-type-no-unknown': null,
        'no-descending-specificity': null,
        'font-family-name-quotes': null,
        'function-url-quotes': never,
        'declaration-colon-space-after': always,
        'declaration-colon-space-before': never,
        //'declaration-block-semicolon-newline-after': always, - buggy
        'block-closing-brace-newline-after': always,
        'selector-combinator-space-before': always,
        'selector-combinator-space-after': always,
        'no-empty-first-line': true,
        'rule-empty-line-before': [
            'always-multi-line', {
                except: ['first-nested'],
                ignore: ['after-comment']
            }
        ],
        'value-no-vendor-prefix': true,
        'at-rule-no-vendor-prefix': true,
        'block-opening-brace-space-before': always,
        'declaration-block-semicolon-newline-before': 'never-multi-line',
        'value-list-comma-space-after': alwaysSingleLine,
        'selector-list-comma-space-before': never,
        'selector-list-comma-space-after': alwaysSingleLine,
        'function-comma-space-after': alwaysSingleLine
    }
};

module.exports = config;