Testing Worker in Jest

Hi,

I'm trying to test my worker inside a Vue.js project. I load the worker inside my component using the [worker-plugin](https://github.com/GoogleChromeLabs/worker-plugin/) (I also tried loading my Worker using [Webpack worker-loader](https://webpack.js.org/loaders/worker-loader/), unfortunately it doesn't provide a compatible interface and I had to mock the worker in that case)

```js
const worker = new Worker('@/utils.worker.js', { type: 'module' });
```

But when I run my tests with Jest I get

```
console.error node_modules/jsdom-worker/dist/jsdom-worker.js:1
TypeError: Only absolute URLs are supported
...
```

Reproduisez l’échec de Jest avec la configuration du composant Vue `new Worker('@/utils.worker.js', { type: 'module' })` et examinez `node_modules/jsdom-worker/dist/jsdom-worker.js` autour de l’erreur signalée. Déterminez la gestion attendue de l’URL du worker et vérifiez que la configuration des tests ne signale plus « Only absolute URLs are supported. ».

Rédigé par le modèle d'indexation à partir du texte de l'issue.