block_on(async {
    tokio::task::yield_now().await;
    poll_once(poll_fn(|cx| {
        js.poll_event_loop(cx, PollEventLoopOptions::default())
    }))
    .await;
});

block_on(async {
    tokio::task::yield_now().await;
    poll_once(poll_fn(|cx| {
        js.poll_event_loop(cx, PollEventLoopOptions::default())
    }))
    .await;
});