From 1022eabaa1aaf8436876f5ec5573cb1e4b3959a6 Mon Sep 17 00:00:00 2001
From: edison <daiwei521@126.com>
Date: Fri, 15 Nov 2024 10:46:59 +0800
Subject: [PATCH] fix(types): defineEmits w/ interface declaration (#12343)

close #8457
---
 packages-private/dts-test/setupHelpers.test-d.ts | 8 ++++++++
 packages/runtime-core/src/apiSetupHelpers.ts     | 4 +---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/packages-private/dts-test/setupHelpers.test-d.ts b/packages-private/dts-test/setupHelpers.test-d.ts
index 7b5d6f147f0..656f1da79f2 100644
--- a/packages-private/dts-test/setupHelpers.test-d.ts
+++ b/packages-private/dts-test/setupHelpers.test-d.ts
@@ -306,6 +306,14 @@ describe('defineEmits w/ type declaration', () => {
   emit2('baz')
 })
 
+describe('defineEmits w/ interface declaration', () => {
+  interface Emits {
+    foo: [value: string]
+  }
+  const emit = defineEmits<Emits>()
+  emit('foo', 'hi')
+})
+
 describe('defineEmits w/ alt type declaration', () => {
   const emit = defineEmits<{
     foo: [id: string]
diff --git a/packages/runtime-core/src/apiSetupHelpers.ts b/packages/runtime-core/src/apiSetupHelpers.ts
index 54712c6807a..2ddaeb509ad 100644
--- a/packages/runtime-core/src/apiSetupHelpers.ts
+++ b/packages/runtime-core/src/apiSetupHelpers.ts
@@ -149,9 +149,7 @@ export function defineEmits() {
   return null as any
 }
 
-export type ComponentTypeEmits =
-  | ((...args: any[]) => any)
-  | Record<string, any[]>
+export type ComponentTypeEmits = ((...args: any[]) => any) | Record<string, any>
 
 type RecordToUnion<T extends Record<string, any>> = T[keyof T]