];

function firstFetchCall(fetchMock: ReturnType<typeof vi.fn>): unknown[] {

const call = fetchMock.mock.calls.at(0);

const call = fetchMock.mock.calls[0];

if (!call) {

throw new Error("expected fetch call");

}

return call;

}

function firstFetchInit(fetchMock: ReturnType<typeof vi.fn>): RequestInit {

const init = firstFetchCall(fetchMock).at(1);

const init = firstFetchCall(fetchMock)[1];

if (!init || typeof init !== "object") {

throw new Error("expected fetch init");

}

timeoutMs: 5_000,

});

const url = firstFetchCall(fetchMock).at(0);

const url = firstFetchCall(fetchMock)[0];

const init = firstFetchInit(fetchMock);

const headers = init?.headers as Record<string, string> | undefined;

expect(url).toBe("https://api.openai.com/v1/audio/speech");