diff --git a/packages/utils/src/cjs.js b/packages/utils/src/cjs.js
index 1add0c35f0..c70825b20f 100644
--- a/packages/utils/src/cjs.js
+++ b/packages/utils/src/cjs.js
@@ -3,6 +3,10 @@ export function isExternalDependency (id) {
 }
 
 export function clearRequireCache (id) {
+  if (isExternalDependency(id)) {
+    return
+  }
+
   const entry = getRequireCacheItem(id)
 
   if (!entry) {
@@ -10,10 +14,6 @@ export function clearRequireCache (id) {
     return
   }
 
-  if (isExternalDependency(id)) {
-    return
-  }
-
   if (entry.parent) {
     entry.parent.children = entry.parent.children.filter(e => e.id !== id)
   }
@@ -26,6 +26,10 @@ export function clearRequireCache (id) {
 }
 
 export function scanRequireTree (id, files = new Set()) {
+  if (isExternalDependency(id) || files.has(id)) {
+    return files
+  }
+
   const entry = getRequireCacheItem(id)
 
   if (!entry) {
@@ -33,10 +37,6 @@ export function scanRequireTree (id, files = new Set()) {
     return files
   }
 
-  if (isExternalDependency(id) || files.has(id)) {
-    return files
-  }
-
   files.add(entry.id)
 
   for (const child of entry.children) {