diff --git a/src/client/types/wrapper.ts b/src/client/types/wrapper.ts
index bbf9efb..da59ac5 100644
--- a/src/client/types/wrapper.ts
+++ b/src/client/types/wrapper.ts
@@ -1,3 +1,4 @@
+import './ext.ts'
 import { journey_template, leg_template } from "./format"
 
 const date_day_diff = (d0: Date, d1: Date): number =>