From 6257adeaac03d1401a67714953909e2e31febed6 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Wed, 22 Sep 2021 17:16:21 -0400
Subject: [PATCH] fix(compiler-core): more robust member expression check in
 Node

---
 packages/compiler-core/__tests__/utils.spec.ts | 4 +++-
 packages/compiler-core/src/utils.ts            | 4 ----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/packages/compiler-core/__tests__/utils.spec.ts b/packages/compiler-core/__tests__/utils.spec.ts
index 48f1ea5b9ae..3c5412796e3 100644
--- a/packages/compiler-core/__tests__/utils.spec.ts
+++ b/packages/compiler-core/__tests__/utils.spec.ts
@@ -105,7 +105,6 @@ describe('isMemberExpression', () => {
     expect(fn('objfoo]')).toBe(false)
     expect(fn('obj[arr[0]')).toBe(false)
     expect(fn('obj[arr0]]')).toBe(false)
-    expect(fn('123[a]')).toBe(false)
     expect(fn('a + b')).toBe(false)
     expect(fn('foo()')).toBe(false)
     expect(fn('a?b:c')).toBe(false)
@@ -114,6 +113,7 @@ describe('isMemberExpression', () => {
 
   test('browser', () => {
     commonAssertions(isMemberExpressionBrowser)
+    expect(isMemberExpressionBrowser('123[a]')).toBe(false)
   })
 
   test('node', () => {
@@ -126,6 +126,8 @@ describe('isMemberExpression', () => {
     expect(fn(`foo.bar as string`)).toBe(true)
     expect(fn(`foo['bar'] as string`)).toBe(true)
     expect(fn(`foo[bar as string]`)).toBe(true)
+    expect(fn(`(foo as string)`)).toBe(true)
+    expect(fn(`123[a]`)).toBe(true)
     expect(fn(`foo() as string`)).toBe(false)
     expect(fn(`a + b as string`)).toBe(false)
   })
diff --git a/packages/compiler-core/src/utils.ts b/packages/compiler-core/src/utils.ts
index ee7e6bb132d..ff903770229 100644
--- a/packages/compiler-core/src/utils.ts
+++ b/packages/compiler-core/src/utils.ts
@@ -165,10 +165,6 @@ export const isMemberExpressionNode = (
   path: string,
   context: TransformContext
 ): boolean => {
-  path = path.trim()
-  if (!validFirstIdentCharRE.test(path[0])) {
-    return false
-  }
   try {
     let ret: Expression = parseExpression(path, {
       plugins: [...context.expressionPlugins, ...babelParserDefaultPlugins]