spatie / laravel-collection-macros

src/Macros/FirstOrFail.php

<?php

namespace Spatie\CollectionMacros\Macros;

use Illuminate\Support\Collection;
use Spatie\CollectionMacros\Exceptions\CollectionItemNotFound;

/*
 * Get the first item. Throws CollectionItemNotFound if the item was not found.
 *
 * @return mixed
 */
class FirstOrFail
{
    public function __invoke()
    {
        return function () {
            if (! is_null($item = $this->first())) {

The method first() does not seem to exist on object<Spatie\CollectionMacros\Macros\FirstOrFail>.

                return $item;
            }

            throw new CollectionItemNotFound('No items found in collection.');
        };
    }
}