diff --git a/test-module/test-module.d.ts b/test-module/test-module.d.ts
new file mode 100644
index 000000000..e73a9981c
--- /dev/null
+++ b/test-module/test-module.d.ts
@@ -0,0 +1,6 @@
+declare module 'test-module' {
+    interface Such {
+        amaze(): void;
+    }
+    export function wow(): Such;
+}