not working in react

I tested all examples in a react application but it don't works
how can I use it in react?

worker.js
```javascript
import * as Comlink from 'comlink';

async function callbackFunction(cb) {
await cb("A string from a worker");
}

Comlink.expose(callbackFunction);
```

index.ts
```javascript
import * as Comlink from 'comlink';

function callback(value) {
alert(`Result: ${value}`);
}
async function init() {
const remoteFunction = Comlink.wrap(new Worker("worker.js"));
await remoteFunction(Comlink.proxy(callback));
}
init();
```
for example I call this but it does not execute