Yu1709$!%yuyu!$%wutu!5=126+

                
____  ___       .__                 
\   \/  /  _____|  |   ______  _  __
 \     /  /  ___/  |  /  _ \ \/ \/ /
 /     \  \___ \|  |_(  <_> )     / 
/___/\  \/____  >____/\____/ \/\_/  
      \_/     \/    @ligmakokz

Editing: compile.js

'use strict';

const fill = require('fill-range');
const utils = require('./utils');

const compile = (ast, options = {}) => {
  let walk = (node, parent = {}) => {
    let invalidBlock = utils.isInvalidBrace(parent);
    let invalidNode = node.invalid === true && options.escapeInvalid === true;
    let invalid = invalidBlock === true || invalidNode === true;
    let prefix = options.escapeInvalid === true ? '\\' : '';
    let output = '';

if (node.isOpen === true) {
      return prefix + node.value;
    }
    if (node.isClose === true) {
      return prefix + node.value;
    }

if (node.type === 'open') {
      return invalid ? (prefix + node.value) : '(';
    }

if (node.type === 'close') {
      return invalid ? (prefix + node.value) : ')';
    }

if (node.type === 'comma') {
      return node.prev.type === 'comma' ? '' : (invalid ? node.value : '|');
    }

if (node.value) {
      return node.value;
    }

if (node.nodes && node.ranges > 0) {
      let args = utils.reduce(node.nodes);
      let range = fill(...args, { ...options, wrap: false, toRegex: true });

if (range.length !== 0) {
        return args.length > 1 && range.length > 1 ? `(${range})` : range;
      }
    }

if (node.nodes) {
      for (let child of node.nodes) {
        output += walk(child, node);
      }
    }
    return output;
  };

return walk(ast);
};

module.exports = compile;

Name	Type	Actions
compile.js	File
constants.js	File
expand.js	File
parse.js	File
stringify.js	File
utils.js	File