spatie / laravel-collection-macros

src/Macros/ChunkBy.php

<?php

namespace Spatie\CollectionMacros\Macros;

use Illuminate\Support\Collection;

/*
 * Separate a collection into chunks as long as the given callback returns true.
 *
 * @param callable $callback
 * @param bool $preserveKeys
 *
 * @return \Illuminate\Support\Collection
 */
class ChunkBy
{
    public function __invoke()
    {
        return function ($callback, bool $preserveKeys = false): Collection {
            return $this->sliceBefore(function ($item, $prevItem) use ($callback) {

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

                return $callback($item) !== $callback($prevItem);
            }, $preserveKeys);
        };
    }
}