text: 'use strict';
  
  const fs = require('fs');
  const path = require('path');
  
  module.exports = function sortByIsDirectory(dir, paths, cb) {
    // take the listing file names in `dir`
    // returns directory and file array, each entry is
    // of the array a [name, stat] tuple
    let pending = paths.length;
    const errs = [];
    const dirs = [];
    const files = [];
  
    if (!pending) {
      cb(errs, dirs, files);
      return;
    }
  
    paths.forEach((file) => {
      fs.stat(path.join(dir, file), (err, s) => {
        if (err) {
          errs.push([file, err]);
        } else if (s.isDirectory()) {
          dirs.push([file, s]);
        } else {
          files.push([file, s]);
        }
  
        pending -= 1;
        if (pending === 0) {
          cb(errs, dirs, files);
        }
      });
    });
  };
  
  