fix(compiler-core): fix v-on with modifiers on inline expression of undefined (#9866)

close #9865
improve isMemberExpression check for undefined

Author: baiwusanyu-c

packages/compiler-core/__tests__/utils.spec.ts

@@ -122,6 +122,10 @@ describe('isMemberExpression', () => {
     expect(fn(`123[a]`)).toBe(true)
     expect(fn(`foo() as string`)).toBe(false)
     expect(fn(`a + b as string`)).toBe(false)
+    // #9865
+    expect(fn('""')).toBe(false)
+    expect(fn('undefined')).toBe(false)
+    expect(fn('null')).toBe(false)
   })
 })
 

packages/compiler-core/src/utils.ts

@@ -163,7 +163,7 @@ export const isMemberExpressionNode = __BROWSER__
         return (
           ret.type === 'MemberExpression' ||
           ret.type === 'OptionalMemberExpression' ||
-          ret.type === 'Identifier'
+          (ret.type === 'Identifier' && ret.name !== 'undefined')
         )
       } catch (e) {
         return false