name : BeforeWriting.php <?php namespace Maatwebsite\Excel\Events; use Maatwebsite\Excel\Writer; class BeforeWriting extends Event { /** * @var Writer */ public $writer; /** * @var object */ private $exportable; /** * @param Writer $writer * @param object $exportable */ public function __construct(Writer $writer, $exportable) { $this->writer = $writer; parent::__construct($exportable); } /** * @return Writer */ public function getWriter(): Writer { return $this->writer; } /** * @return mixed */ public function getDelegate() { return $this->writer; } }