diff --git a/packages/utils/src/cjs.js b/packages/utils/src/cjs.js
index be93e0e50f5b..6422fc91c458 100644
--- a/packages/utils/src/cjs.js
+++ b/packages/utils/src/cjs.js
@@ -7,11 +7,10 @@ export function clearRequireCache (id) {
   try {
     entry = require.cache[id]
   } catch (e) {
-    delete require.cache[id]
-    return
   }
 
   if (!entry || isExternalDependency(id)) {
+    delete require.cache[id]
     return
   }
 
@@ -31,11 +30,10 @@ export function scanRequireTree (id, files = new Set()) {
   try {
     entry = require.cache[id]
   } catch (e) {
-    files.add(id)
-    return files
   }
 
   if (!entry || isExternalDependency(id) || files.has(id)) {
+    files.add(id)
     return files
   }