code: function _importDirectoryOptionsParser(options={}) {
    const _options = Object.assign({
      imports: {},
      onload: options.callback,
      extension: makeArray(options.extensions || settings.get('extensions')),
      useSyncRequire: settings.get('useSyncRequire'),
      merge: settings.get('mergeImports'),
      rescursive: false
    }, options, {
      squashErrors: !!options.retry
    });
  
    if (_options.extensions) delete _options.extensions;
  
    if (options.callback) console.warn(`The options.callback method is deprecated, please use options.onload() instead. This being used in ${getCallingFileName()}`);
  
    return _options;
  }
docs: Parse the input options, filling-in any defaults.
  
  @private
  @param {Object} [options={}]   The options to parse.
  @returns {Object}