diff --git a/src/config/constant.js b/src/config/constant.js
index 834392a1..42271eae 100644
--- a/src/config/constant.js
+++ b/src/config/constant.js
@@ -24,4 +24,4 @@ export const NAV_VIEW_NAMES = {
   setting: 4,
 }
 
-const LXM_FILE_EXT_RXP = /\.(json|lxmc)$/
+export const LXM_FILE_EXT_RXP = /\.(json|lxmc)$/