cssd-back/app/Services/ExportCollection.php

<?php

namespace App\Services;

use Maatwebsite\Excel\Concerns\FromCollection;

class ExportCollection implements FromCollection
{

    protected $data;

    public function __construct( $data)
    {
        $this->data = $data;
    }

    public function collection()
    {
        return $this->data;
    }

}