Airship\Cabin\Hull\Filter\Ajax\CommentForm::__construct PHP Method

    public function __construct()
    {
        $this->addFilter('year', (new StringFilter())->addCallback(function ($str) : string {
            if (!\preg_match('/^[0-9]{4}$/', $str)) {
                throw new \TypeError();
            }
            return $str;
        }))->addFilter('month', (new StringFilter())->addCallback(function ($str) : string {
            if (!\preg_match('/^[0-9]{2}$/', $str)) {
                throw new \TypeError();
            }
            return $str;
        }))->addFilter('slug', (new StringFilter())->addCallback(function ($str) : string {
            if (!\preg_match('/^[a-z0-9\\-]+$/', $str)) {
                throw new \TypeError();
            }
            return $str;
        }));
    }