From 93a950d60d347321df4196d22f64c4810840a3bb Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Mon, 19 Jul 2021 17:31:13 -0400
Subject: [PATCH] fix(compiler-sfc): support const enum

---
 .../__snapshots__/compileScript.spec.ts.snap      | 15 +++++++++++++++
 .../compiler-sfc/__tests__/compileScript.spec.ts  | 12 ++++++++++++
 packages/compiler-sfc/src/compileScript.ts        |  2 +-
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap b/packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap
index d71f41b8002..fde572c8610 100644
--- a/packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap
+++ b/packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap
@@ -540,6 +540,21 @@ return { a, b, c, d, x }
 }"
 `;
 
+exports[`SFC compile <script setup> with TypeScript const Enum 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+const enum Foo { A = 123 }
+        
+export default _defineComponent({
+  setup(__props, { expose }) {
+  expose()
+
+        
+return { Foo }
+}
+
+})"
+`;
+
 exports[`SFC compile <script setup> with TypeScript defineEmits w/ type (exported interface) 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
 export interface Emits { (e: 'foo' | 'bar'): void }
diff --git a/packages/compiler-sfc/__tests__/compileScript.spec.ts b/packages/compiler-sfc/__tests__/compileScript.spec.ts
index 4b701bf373e..1fc9827cd6e 100644
--- a/packages/compiler-sfc/__tests__/compileScript.spec.ts
+++ b/packages/compiler-sfc/__tests__/compileScript.spec.ts
@@ -794,6 +794,18 @@ const emit = defineEmits(['a', 'b'])
         Foo: BindingTypes.SETUP_CONST
       })
     })
+
+    test('const Enum', () => {
+      const { content, bindings } = compile(
+        `<script setup lang="ts">
+        const enum Foo { A = 123 }
+        </script>`
+      )
+      assertCode(content)
+      expect(bindings).toStrictEqual({
+        Foo: BindingTypes.SETUP_CONST
+      })
+    })
   })
 
   describe('async/await detection', () => {
diff --git a/packages/compiler-sfc/src/compileScript.ts b/packages/compiler-sfc/src/compileScript.ts
index 0aab4d2855e..9999bcc7a72 100644
--- a/packages/compiler-sfc/src/compileScript.ts
+++ b/packages/compiler-sfc/src/compileScript.ts
@@ -1008,7 +1008,7 @@ export function compileScript(
 
     if (isTS) {
       // runtime enum
-      if (node.type === 'TSEnumDeclaration' && !node.const) {
+      if (node.type === 'TSEnumDeclaration') {
         registerBinding(setupBindings, node.id, BindingTypes.SETUP_CONST)
       }