code: function _canImport(fileName, callingFileName, options) {
    if (callingFileName && (fileName === callingFileName)) return false;
    let _fileName = _getFileTests(fileName, options);
    if (options.includes) return (intersection(options.includes, _fileName).length > 0);
    if (options.excludes) return (intersection(options.includes, _fileName).length === 0);
    return true;
  }
docs: Can a filename be imported according to the rules the supplied options.
  
  @private
  @param {string} fileName         Filename to test.
  @param {string} callingFileName  Calling filename (file doing the import).
  @param {Object} options          Import/Export options.
  @returns {boolean}