Class example not working

I try to run the example 03 with class in my project:

```js
import * as Comlink from 'comlink';
import {
Game
} from "./src/index.js"

console.log("start 1");
async function init() {
console.log("start 2");
const MyClass = Comlink.wrap(new Worker("worker.js"));
console.log("start 3");
console.log(MyClass);
let worker = new MyClass();
console.log("start 4");
console.log(worker);
let game = new Game(worker);
console.log("start 5");
console.log(game);
}
init().catch(console.trace);

```

worker.js:

```js
import * as Comlink from 'comlink';
import("../../rust-src/pkg").then(wasm => {
wasm.init();
class MyClass {

constructor() {
console.log("Worker started");
}

request() {
return wasm.request()
}

chacha20poly1305_decrypt(key, noce, str) {
return wasm.chacha20poly1305_decrypt(key, noce, str)
}

chacha20poly1305_encrypt(key, noce, str) {
return wasm.chacha20poly1305_encrypt(key, noce, str)
}

aes_encrypt(str) {
return wasm.aes_encrypt(str)
}
hash(str) {
return wasm.hash(str)
}
}

Comlink.expose(MyClass);
});
```

But the await blocks the script as shown in the example. Is the example outdated or what is wrong?