src/vs/workbench/services/search/browser/searchService.ts/LocalFileSearchWorkerClient/_getOrCreateWorker
class LocalFileSearchWorkerClient:	private _getOrCreateWorker(): IWorkerClient<ILocalFileSearchSimpleWorker> {
		if (!this._worker) {
			try {
				this._worker = this._register(new SimpleWorkerClient<ILocalFileSearchSimpleWorker, ILocalFileSearchSimpleWorkerHost>(
					this._workerFactory,
					'vs/workbench/services/search/worker/localFileSearch',
					this,
				));
			} catch (err) {
				logOnceWebWorkerWarning(err);
				throw err;
			}
		}
		return this._worker;
	}