diff --git a/packages/shared/isValidElementType.js b/packages/shared/isValidElementType.js
new file mode 100644
index 00000000000..f08f002dc58
--- /dev/null
+++ b/packages/shared/isValidElementType.js
@@ -0,0 +1,18 @@
+/** 
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+function isValidElementType(type) {
+  return (
+    typeof type === 'string' ||
+    typeof type === 'function' ||
+    (type != null && typeof type === 'object' && 'render' in type)
+  );
+}
+
+module.exports = isValidElementType;