package.php

См. документацию.

<?php
 
namespace Bitrix\Main\Web\WebPacker\Resource;

class Package
{
    protected $list = [];
    protected $onDemand = false;

    public static function getOrderedTypeList()
    {
        return [
            Asset::CSS,
            Asset::LANG,
            Asset::LAYOUT,
            Asset::JS,
        ];
    }

    public function __construct(array $assets = [])
    {
        foreach ($assets as $asset)
        {
            $this->addAsset($asset);
        }
    }

    public function addAsset(Asset $item)
    {
        $this->list[] = $item;
        return $this;
    }

    public function getAssets($type = null)
    {
        if ($type)
        {
            $list = [];
            foreach ($this->list as $asset)
            {
                if ($asset->getType() !== $type)
                {
                    continue;
                }
 
                $list[] = $asset;
            }
 
            return $list;
        }
 
        return $this->list;
    }

    public function onDemand()
    {
        $this->onDemand = true;
        return $this;
    }

    public function isOnDemand()
    {
        return $this->onDemand;
    }

    public function toArray($type = null)
    {
        $result = [];
        foreach ($this->list as $asset)
        {
            if ($type && $asset->getType() != $type)
            {
                continue;
            }
 
            $path = $asset->getUri();
            if ($this->onDemand && !$path)
            {
                continue;
            }
 
            $content = $asset->getContent();
            if (!$this->onDemand && !$content)
            {
                continue;
            }
 
            $result[] = [
                'type' => $asset->getType(),
                'path' => $path,
                'content' => $content,
                'cache' => true,
            ];
        }
 
        return $result;
    }
}