createJsonMutation mapData always return null on React Native

[ArtemBozhenko]

createJsonMutation have a responce.body check

async function isEmptyResponse(response: Response): Promise<boolean> {
  if (!response.body) {
    return true;
  }

  const headerAsEmpty = response.headers.get('Content-Length') === '0';
  if (headerAsEmpty) {
    return true;
  }

  // Clone response to read it
  // because response can be read only once
  const clonnedResponse = response.clone();
  const bodyAsText = await clonnedResponse.text();
  if (bodyAsText.length === 0) {
    return true;
  }

  return false;
}

In React Native, response.body is always null / undefined (because there is no ReadableStream), even when the response actually has a body and a valid Content-Length.

As a result, this condition:

if (!response.body) {
  return true;
}

makes isEmptyResponse always return true on React Native