src/vs/workbench/contrib/notebook/common/services/notebookWorkerServiceImpl.ts/NotebookWorkerClient/_getProxy
class NotebookWorkerClient:	protected _getProxy(): Promise<NotebookEditorSimpleWorker> {
		return this._getOrCreateWorker().getProxyObject().then(undefined, (err) => {
			// logOnceWebWorkerWarning(err);
			// this._worker = new SynchronousWorkerClient(new EditorSimpleWorker(new EditorWorkerHost(this), null));
			// return this._getOrCreateWorker().getProxyObject();
			throw (err);
		});
	}