code: function filterConfig(config) {
  	return Object
  		.entries(config)
  		.filter(
  			([key, value]) =>
  				typeof value === typeof DEFAULT_CONFIG[key]
  		)
  		.reduce(
  			(obj, [key, value]) => {
  				obj[key] = value
  				return obj
  			}, {}
  		)
  }
docs: Allows to filter config object
  @param  {Object} config
  @return {Object}