Typing ref for $fetch

const userInfo = apiRef({ route: '/api/userLookup`, method: 'post', defaultValue: null})

const doUserLookup = async () => {
  const result = await $fetch(`/api/users/${userId}`, { method: 'post', body: '{"username":"foobar"}')
  userInfo.value = result
}

const result: Simplify<SerializeObject<Response> | SerializeObject<UserLookupInfo> | undefined>

const userInfo: globalThis.Ref<{
    readonly body: {
        readonly locked: boolean;
    } | null;
    readonly headers: {};
    readonly status: number;
    readonly url: string;
    readonly ok: boolean;
    readonly redirected: boolean;
    readonly statusText: string;
    readonly type: ResponseType;
    readonly bodyUsed: boolean;
} | {
    ...;
} | null | undefined>