Fix.

node_modules/jest-worker/build/workers/NodeThreadsWorker.d.ts

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+/// <reference types="node" />
+import { ChildMessage, OnEnd, OnStart, WorkerOptions, WorkerInterface, ParentMessage } from '../types';
+export default class ExperimentalWorker implements WorkerInterface {
+    private _worker;
+    private _options;
+    private _onProcessEnd;
+    private _request;
+    private _retries;
+    private _stderr;
+    private _stdout;
+    private _fakeStream;
+    constructor(options: WorkerOptions);
+    initialize(): void;
+    private _shutdown;
+    onMessage(response: ParentMessage): void;
+    onExit(exitCode: number): void;
+    send(request: ChildMessage, onProcessStart: OnStart, onProcessEnd: OnEnd): void;
+    getWorkerId(): number;
+    getStdout(): NodeJS.ReadableStream | null;
+    getStderr(): NodeJS.ReadableStream | null;
+    private _getFakeStream;
+}
+//# sourceMappingURL=NodeThreadsWorker.d.ts.map