diff --git a/lib/deps.js b/lib/deps.js
index 1cccbef4..d5a5f98d 100644
--- a/lib/deps.js
+++ b/lib/deps.js
@@ -56,6 +56,7 @@ const loadModule = (name) => {
   for (const subName of subNames) {
     try {
       const sub = appRequire(name + '/' + subName);
+      if (lib[subName] && lib[subName] === sub[subName]) continue;
       lib[subName] = sub;
     } catch (e) {
       if (e.message.startsWith("Cannot find module '")) {