Add node modules and compiled JavaScript from main (#198)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/jest-jasmine2/build/isError.d.ts

@@ -0,0 +1,10 @@
+/**
+ * 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 isError(potentialError: any): {
+    isError: boolean;
+    message: string | null;
+};