text: const { NotImplementedError } = require("../extensions/index.js");
  
  /**
   * There's a list of file, since two files cannot have equal names,
   * the one which comes later will have a suffix (k),
   * where k is the smallest integer such that the found name is not used yet.
   *
   * Return an array of names that will be given to the files.
   *
   * @param {Array} names
   * @return {Array}
   *
   * @example
   * For input ["file", "file", "image", "file(1)", "file"],
   * the output should be ["file", "file(1)", "image", "file(1)(1)", "file(2)"]
   *
   */
  function renameFiles(names) {
    let count = 0;
    let result = [];
  
    result.push([names[0]]);
  
    for (let i = 1; i < names.length; i++) {
      if (result.join("").replace(new RegExp(",", "g"), "").includes(names[i])) {
        count++;
        result.push([`${names[i]}(${count})`]);
      } else {
        count = 0;
        result.push([names[i]]);
      };
    };
    if (result.flat().length < 2) {
      result.length = 0;
    };
    return result.flat();
  };
  
  module.exports = {
    renameFiles,
  };
  