Allow responses other that json (or plain text)

[doktordirk]

Atm, other formats are not allowed. To be backwards compatible, one option could be to always also return the original response

async function getResponseData(response: Response) {
// ...
const text = await response.clone().text()
//...
}

async function fetchJson(url: string, init: RequestInit): Promise<ApiResponse> {
//...
 const result = {
	...response,
    data,
  }
//...
}

[vdawg-git]

It really should not throw if the spec defines the response as plain/text and the status is 200.
What is a good work-around for that?