CheckoutSummaryConfigProvider.php

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<?php
namespace Magento\Checkout\Model\Cart;

use Magento\Checkout\Model\ConfigProviderInterface;
use Magento\Framework\UrlInterface;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Store\Model\ScopeInterface;

class CheckoutSummaryConfigProvider implements ConfigProviderInterface
{
    private $urlBuilder;

    private $scopeConfig;

    public function __construct(
        UrlInterface $urlBuilder,
        ScopeConfigInterface $scopeConfig
    ) {
        $this->urlBuilder = $urlBuilder;
        $this->scopeConfig = $scopeConfig;
    }

    public function getConfig()
    {
        return [
            'maxCartItemsToDisplay' => $this->getMaxCartItemsToDisplay(),
            'cartUrl' => $this->urlBuilder->getUrl('checkout/cart')
        ];
    }

    private function getMaxCartItemsToDisplay()
    {
        return (int)$this->scopeConfig->getValue(
            'checkout/options/max_items_display_count',
            ScopeInterface::SCOPE_STORE
        );
    }
}