onnov / json-rpc-server

src/Result/RpcResultError.php

<?php

/**
 * Created by PhpStorm.
 * Project: json-rpc-server
 * User: sv
 * Date: 03.07.2020
 * Time: 15:32
 */

declare(strict_types=1);

namespace Onnov\JsonRpcServer\Result;

/**
 * Class RpcResultError
 *
 * @package Onnov\JsonRpcServer\Result
 */
class RpcResultError extends RpcResultAbstract
{
    public function __construct()
    {
        $this->result = 'error';
    }

    /**
     * @return string
     */
    public function getResult(): string
    {
        return $this->result;

The expression return $this->result could return the type null which is incompatible with the type-hinted return string. Consider adding an additional type-check to rule them out.

    }
}