How to avoid this "update is too soon" when using workers?

[vjackson725]

Hello,

I am using sauron and web-workers, and have encountered a problem. I have a conditional node, and even though the value gets set, the rendered node doesn't change. The following gets logged to the console

update is 15 too soon!... time_delta: 1, frame_time: 16
update is cancelled...

which is presumably why. But I am unsure as to (1) why this is happening and (2) why this isn't resolved by the request_timeout_callback following the log statement in the code.

To describe the program that causes this some more: my program is, essentially, a protocol being executed by message passing between a web-worker and the sauron app. The messages from the web-worker are forwarded into the app as sauron messages. Messages to the web-worker are performed manually using the worker's port. The forwarding is working correctly.

I think the issue is because there's a post_message in the update function

    match msg {
      Msg(k) if k >= 1 => {
        self.toggle = true;
      }
      Msg(k) => {
        self.worker.port().post_message(&(
          serde_wasm_bindgen::to_value(&Msg(k+1))
            .expect("serialisable")
        )).unwrap_or_else(|e| log::error!("{e:?}"));
      }
    }

but am unsure as to why that would cause an issue.

Code that causes the bug (on my machine, at least) can be found here:
https://github.com/vjackson725/wasm_tests/tree/main/sauron_test