diff --git a/src.ts/shims/empty.ts b/src.ts/shims/empty.ts
index e1318b6b9..f0a766d36 100644
--- a/src.ts/shims/empty.ts
+++ b/src.ts/shims/empty.ts
@@ -1,2 +1 @@
-
-export const _empty: any = null;
+export { }
diff --git a/src.ts/shims/xmlhttprequest.ts b/src.ts/shims/xmlhttprequest.ts
index 7b8fe9f3e..d453d09d5 100644
--- a/src.ts/shims/xmlhttprequest.ts
+++ b/src.ts/shims/xmlhttprequest.ts
@@ -7,4 +7,4 @@ try {
     module.exports.XMLHttpRequest = null;
 }
 
-export const _empty: any = null;
+export { }