From 2e3a1ff3c3d46341e02e87865225a018bfefab85 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Thu, 26 Sep 2019 12:22:31 -0400
Subject: [PATCH] fix: do not use lookbehind regex yet

---
 packages/compiler-core/__tests__/transforms/vFor.spec.ts | 2 +-
 packages/compiler-core/src/transforms/vFor.ts            | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/packages/compiler-core/__tests__/transforms/vFor.spec.ts b/packages/compiler-core/__tests__/transforms/vFor.spec.ts
index 30f54dce..5dfcc068 100644
--- a/packages/compiler-core/__tests__/transforms/vFor.spec.ts
+++ b/packages/compiler-core/__tests__/transforms/vFor.spec.ts
@@ -259,7 +259,7 @@ describe('compiler: transform v-for', () => {
     })
 
     test('de-structured value', () => {
-      const source = '<span v-for="(  { id, key })in items" />'
+      const source = '<span v-for="(  { id, key }) in items" />'
       const forNode = parseWithForTransform(source)
 
       const valueIndex = source.indexOf('{ id, key }')
diff --git a/packages/compiler-core/src/transforms/vFor.ts b/packages/compiler-core/src/transforms/vFor.ts
index 04c6bf34..9c6b315e 100644
--- a/packages/compiler-core/src/transforms/vFor.ts
+++ b/packages/compiler-core/src/transforms/vFor.ts
@@ -13,10 +13,6 @@ import { getInnerRange } from '../utils'
 import { RENDER_LIST } from '../runtimeConstants'
 import { processExpression } from './transformExpression'
 
-const forAliasRE = /([\s\S]*?)(?:(?<=\))|\s+)(?:in|of)\s+([\s\S]*)/
-const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
-const stripParensRE = /^\(|\)$/g
-
 export const transformFor = createStructuralDirectiveTransform(
   'for',
   (node, dir, context) => {
@@ -64,6 +60,10 @@ export const transformFor = createStructuralDirectiveTransform(
   }
 )
 
+const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/
+const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
+const stripParensRE = /^\(|\)$/g
+
 interface ForParseResult {
   source: ExpressionNode
   value: ExpressionNode | undefined