1 files changed, 3 insertions, 1 deletions
diff --git a/src/model/Direction.ts b/src/model/Direction.ts
index a0cf45d..7f92588 100644
--- a/src/model/Direction.ts
+++ b/src/model/Direction.ts
@@ -8,6 +8,8 @@ export enum Direction {
         West
 };
 
-export function reverse(r: Direction): Direction { return (r+2) % 4; }
+export module Direction {
+        export function reverse(r: Direction): Direction { return (r+2) % 4; }
+}
 
 export default Direction;