Prerendering with lazy and suspense(Template execution failed: [object Promise])

[RomanistHere]

Hey guys, I want to have structure like this:

App.js:

import { Suspense, lazy } from 'preact/compat'

import Preloader from "../components/Preloader/Preloader"

const Comp1= lazy(() => import('../routes/Comp1/Comp1'))
const Comp2= lazy(() => import('../routes/Comp2/Comp2'))
...

export default () => {
  return (
    <Suspense fallback={<Preloader />}>
      <Router>
        <Route path="/" component={Comp1} />
        <Route path="/comp2" component={Comp2} />

It's simple routing with preloader till any new page load.
dev server and build without prerendering working, but I want to have structure like this prerendered.
If we try to build structure above there is "Template execution failed: [object Promise]" error.

I've tried:
-preact-async-route and AsyncRoute component. Current version asks to use lazy/suspense. With AsyncRoute I was getting errors too.
-"async!" flag in imports - It didn't help much either - there are were errors as well.
-moving pages to "routes" folder doesn't help to split at all - I've got the same size of chunks.

I parsed all documentation I found and still have no clue what would be the "right" way to implement it.

[JoviDeCroock]

We'll need to include something like preact-ssr-prepass for this to work, this can resolve these promises and load the UI.

[RomanistHere]

We'll need to include something like preact-ssr-prepass for this to work, this can resolve these promises and load the UI.

Any way I can make it work now?

[liflovs]

would be interested in this as well