From e6e26fb640332de97b5e1d50945c62d866862c95 Mon Sep 17 00:00:00 2001
From: andrewbrennanfr <20241062+andrewbrennanfr@users.noreply.github.com>
Date: Fri, 28 Jul 2023 23:38:35 +0200
Subject: [PATCH] fix: Preceeding export keyword & unrelated default

---
 packages/compiler-sfc/src/rewriteDefault.ts       |  5 +++--
 packages/compiler-sfc/test/rewriteDefault.spec.ts | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/packages/compiler-sfc/src/rewriteDefault.ts b/packages/compiler-sfc/src/rewriteDefault.ts
index e61cf691bba..b19a95f6800 100644
--- a/packages/compiler-sfc/src/rewriteDefault.ts
+++ b/packages/compiler-sfc/src/rewriteDefault.ts
@@ -2,7 +2,8 @@ import { parse, ParserPlugin } from '@babel/parser'
 import MagicString from 'magic-string'
 
 const defaultExportRE = /((?:^|\n|;)\s*)export(\s*)default/
-const namedDefaultExportRE = /((?:^|\n|;)\s*)export(.+)(?:as)?(\s*)default/s
+const namedDefaultExportRE = /((?:^|\n|;)\s*)export(.+)as(\s*)default/s
+const objectWithDefaultExportRE = /((?:^|\n|;)\s*)export(\s*){(.+)default/s
 const exportDefaultClassRE =
   /((?:^|\n|;)\s*)export\s+default\s+class\s+([\w$]+)/
 
@@ -89,7 +90,7 @@ export function rewriteDefault(
 }
 
 export function hasDefaultExport(input: string): boolean {
-  return defaultExportRE.test(input) || namedDefaultExportRE.test(input)
+  return defaultExportRE.test(input) || namedDefaultExportRE.test(input) || objectWithDefaultExportRE.test(input)
 }
 
 function specifierEnd(
diff --git a/packages/compiler-sfc/test/rewriteDefault.spec.ts b/packages/compiler-sfc/test/rewriteDefault.spec.ts
index 9fb4c64bbb3..9d80db7cc2f 100644
--- a/packages/compiler-sfc/test/rewriteDefault.spec.ts
+++ b/packages/compiler-sfc/test/rewriteDefault.spec.ts
@@ -242,4 +242,18 @@ describe('compiler sfc: rewriteDefault', () => {
       const script = Bar"
     `)
   })
+
+  test('@Component\nexport default class w/ preceeding export keyword & unrelated default keyword', () => {
+    expect(
+      rewriteDefault(
+        `export const test = ''\n@Component\nexport default class Foo { /* default */ }`,
+        'script'
+      )
+    ).toMatchInlineSnapshot(`
+      "export const test = ''
+      @Component
+      class Foo { /* default */ }
+      const script = Foo"
+    `)
+  })
 })