From b980ddb607f12e82b86cffbc96051c8b41f0da8b Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Wed, 16 Oct 2019 15:32:48 -0400
Subject: [PATCH] perf: skip hasScopeRef check if there are no scope vars

---
 packages/compiler-core/src/transforms/vSlot.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/compiler-core/src/transforms/vSlot.ts b/packages/compiler-core/src/transforms/vSlot.ts
index d39d15f45..94089f297 100644
--- a/packages/compiler-core/src/transforms/vSlot.ts
+++ b/packages/compiler-core/src/transforms/vSlot.ts
@@ -342,7 +342,7 @@ function hasScopeRef(
   node: TemplateChildNode | IfBranchNode | SimpleExpressionNode | undefined,
   ids: TransformContext['identifiers']
 ): boolean {
-  if (!node) {
+  if (!node || Object.keys(ids).length === 0) {
     return false
   }
   switch (node.type) {