How to use

emptyDir

function

in

empty-dir

/**
   * Finds all empty directories within `options.cwd`.
   * @private
   * @param  {Function} cb Callback to call once complete.
   */
  _findEmptyDirs(cb) {
    let self = this,
      results = [];

    subdirs(this.options.cwd, function(err, dirs) {
      if(err) self.utils.error(err, '_findEmptyDirs');
      if(err || !Array.isArray(dirs)) return cb(err, []);

      each(dirs, (dir, dCb) => {
        emptyDir(dir, self.options.emptyDirFilter || function() { return true; }, (err, isEmpty) => {
          if(err) self.utils.error(err, '_findEmptyDirs');
          if(err || !isEmpty) return dCb();
          results.push(dir);
          dCb();
        });
      }, (err) => {
        self.emit('emptyDirs', results);
        cb(err, results);
      });
    });
  }

    mkdirp(fixturePath)
   if (emptyDir(fixturePath)) {
    throw String(`Please put some files to the ${fixturePath} directory,
you might not want to test with no files right?`)