export async function apiFetch<T = unknown>(url: string, init?: RequestInit): Promise<T> {
  const res = await fetch(url, {
    ...init,
    headers: {
      "content-type": "application/json",
      ...(init?.headers ?? {}),
    },
  });
  if (!res.ok) {
    let msg = `Request failed: ${res.status}`;
    try {
      const data = (await res.json()) as { error?: string };
      if (data?.error) msg = data.error;
    } catch {
      /* ignore */
    }
    throw new Error(msg);
  }
  if (res.status === 204) return undefined as T;
  return (await res.json()) as T;
}