serializer = $serializer ?: ObjectManager::getInstance() ->get(JsonHexTag::class); $this->checkoutConfigProvider = $checkoutConfigProvider ?: ObjectManager::getInstance() ->get(CheckoutConfigProvider::class); } /** * Retrieve serialized config. * * @return string|bool */ private function getSerializedCheckoutConfig(): string|bool { return $this->serializer->serialize($this->checkoutConfigProvider->getConfig()); } /** * @inheritDoc */ public function toHtml() { $html = parent::toHtml(); $serializedConfig = $this->getSerializedCheckoutConfig(); $jsString = ''; $html .= $jsString; return $html; } }