Add node modules and new code for release

node_modules/@jest/core/build/pluralize.d.ts

@@ -0,0 +1,7 @@
+/**
+ * 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.
+ */
+export default function pluralize(word: string, count: number, ending: string): string;