odan / slim4-skeleton

src/Renderer/JsonRenderer.php

<?php

namespace App\Renderer;

use Psr\Http\Message\ResponseInterface;

final class JsonRenderer
{
    public function json(
        ResponseInterface $response,
        mixed $data = null,
    ): ResponseInterface {
        $response = $response->withHeader('Content-Type', 'application/json');

        $response->getBody()->write(
            (string)json_encode(
                $data,
                JSON_UNESCAPED_SLASHES | JSON_PARTIAL_OUTPUT_ON_ERROR
            )
        );

        return $response;

The expression return $response returns the type Psr\Http\Message\MessageInterface which includes types incompatible with the type-hinted return Psr\Http\Message\ResponseInterface.

    }
}