How to use Vite HMR API with Pixi.js – Blancer.com Tutorials and projects

I’m trying to use the Vite HMR API to create a Pixi.js app that hot reloads without resetting its state. The high-level idea:

main.js initializes Pixi.js so an imported function update() is run every tick.
The imported update() is passed an object with the state so changes can be made in main.js context.

I got update.js to hot update, but the app doesn’t reflect the modified function:

// update.js
if (import.meta.hot) {
    import.meta.hot.accept()
}
export default function update(delta, state) {
    state.bunny.rotation += 0.1 * delta;
}

I think it’s because Pixi is still using the old update():

// main.js
app.ticker.add((delta) => { update(delta, state) });

So I tried to accept updates in main.js when update.js was updated:

// main.js
import update from './update.js';

if (import.meta.hot) {
    import.meta.hot.accept('./update.js', (newUpdate) => {
    console.log('Update ticker here.');
  })
}

However this callback is not called when update.js is hot updated. Why is the callback not getting called?

I have tried some other things, like porting this Snowpack HMR example to Vite. I had problems/errors setting the module state (module.setState(import.meta.hot.data)), but I don’t think I need to do this.