diff --git a/packages/core/src/virtual-content.ts b/packages/core/src/virtual-content.ts
index 15d953f04b..08e910494c 100644
--- a/packages/core/src/virtual-content.ts
+++ b/packages/core/src/virtual-content.ts
@@ -147,7 +147,7 @@ function decodeVirtualExternalESModule(filename: string): { moduleName: string;
     if (nameString) {
       exports = nameString.split(',');
     }
-    let moduleName = component[0]s.slice(externalESPrefix.length);
+    let moduleName = components[0].slice(externalESPrefix.length);
     return { moduleName, exports };
   }
 }