code: function ExpandFiles(options) {
    if (!(this instanceof ExpandFiles)) {
      return new ExpandFiles(options);
    }
  
    Base.call(this, {}, options);
    this.use(utils.plugins());
    this.is('Files');
  
    this.options = options || {};
    if (util.isFiles(options) || arguments.length > 1) {
      this.options = {};
      this.expand.apply(this, arguments);
      return this;
    }
  }
docs: Create an instance of `ExpandFiles` with `options`.
  
  ```js
  var config = new ExpandFiles({cwd: 'src'});
  ```
  @param {Object} `options`
  @api public