code: function getFileItem(fileId, stat, filePath){
      return {
          id:fileId,
          fullPath: filePath,
          name: getName(fileId, !stat.isDirectory()),
          ancestors: getPathAncestors(fileId),
          isDir:stat.isDirectory(),
          isFile:!stat.isDirectory(),
          ext:!stat.isDirectory() ? getExt(fileId) : null,
          modifiedDT: stat.mtime, // (stat.ctime.getTime() > stat.mtime.getTime()) ? stat.ctime : stat.mtime,
          createdDT: stat.birthtime,
          size: stat.size
      };
  }
docs: helper - sumarize file info
  @param {String} fileId
  @param {Object} stat fsStat object
  @param {String} filePath
  @returns {Object}  file info object