Data.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\Json\Helper;

/**
 * Json data helper
 *
 * @deprecated 101.0.0 @see \Magento\Framework\Serialize\Serializer\Json
 */
class Data extends \Magento\Framework\App\Helper\AbstractHelper
{
    /**
     * @var \Magento\Framework\Json\DecoderInterface
     */
    protected $jsonDecoder;

    /**
     * @var \Magento\Framework\Json\EncoderInterface
     */
    protected $jsonEncoder;

    /**
     * @param \Magento\Framework\App\Helper\Context $context
     * @param \Magento\Framework\Json\DecoderInterface $jsonDecoder
     * @param \Magento\Framework\Json\EncoderInterface $jsonEncoder
     */
    public function __construct(
        \Magento\Framework\App\Helper\Context $context,
        \Magento\Framework\Json\DecoderInterface $jsonDecoder,
        \Magento\Framework\Json\EncoderInterface $jsonEncoder
    ) {
        parent::__construct($context);
        $this->jsonDecoder = $jsonDecoder;
        $this->jsonEncoder = $jsonEncoder;
    }

    /**
     * Encode the mixed $valueToEncode into the JSON format
     *
     * @param mixed $valueToEncode
     * @return string
     */
    public function jsonEncode($valueToEncode)
    {
        return $this->jsonEncoder->encode($valueToEncode);
    }

    /**
     * Decodes the given $encodedValue string which is
     * encoded in the JSON format
     *
     * @param string $encodedValue
     * @return mixed
     */
    public function jsonDecode($encodedValue)
    {
        return $this->jsonDecoder->decode($encodedValue);
    }
}