From 20732366b9b3530d33b842cf1fc985919afb9317 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Thu, 23 Nov 2023 23:07:51 +0800
Subject: [PATCH] perf: optimize position cloning

---
 packages/compiler-core/src/utils.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/compiler-core/src/utils.ts b/packages/compiler-core/src/utils.ts
index 7e3eb46a816..0d6e0f5fe14 100644
--- a/packages/compiler-core/src/utils.ts
+++ b/packages/compiler-core/src/utils.ts
@@ -36,7 +36,7 @@ import {
   GUARD_REACTIVE_PROPS,
   WITH_MEMO
 } from './runtimeHelpers'
-import { isString, isObject, extend, NOOP } from '@vue/shared'
+import { isString, isObject, NOOP } from '@vue/shared'
 import { PropsExpression } from './transforms/transformElement'
 import { parseExpression } from '@babel/parser'
 import { Expression } from '@babel/types'
@@ -181,7 +181,11 @@ export function advancePositionWithClone(
   numberOfCharacters: number = source.length
 ): Position {
   return advancePositionWithMutation(
-    extend({}, pos),
+    {
+      offset: pos.offset,
+      line: pos.line,
+      column: pos.column
+    },
     source,
     numberOfCharacters
   )