diff --git a/src/lib/esnext.intl.d.ts b/src/lib/esnext.intl.d.ts
index 99cf65b4dcb..ab7d8421b5f 100644
--- a/src/lib/esnext.intl.d.ts
+++ b/src/lib/esnext.intl.d.ts
@@ -1,3 +1,6 @@
 declare namespace Intl {
-   // Empty for now
+
+   interface DateTimeFormat {
+      formatRange(startName: Date, endNumber: Date): string;
+   }
 }