From d11fb320a9991ad1c9264054886a5dee6be75a0c Mon Sep 17 00:00:00 2001
From: iwata hidetaka <iwata0303@gmail.com>
Date: Sat, 19 Sep 2020 09:37:29 +0900
Subject: [PATCH] fix(types): make enable to use tuple type as EmitsOptions
 (#2159)

---
 packages/runtime-core/src/componentEmits.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/runtime-core/src/componentEmits.ts b/packages/runtime-core/src/componentEmits.ts
index 6418f8c7d5d..daf82b71e30 100644
--- a/packages/runtime-core/src/componentEmits.ts
+++ b/packages/runtime-core/src/componentEmits.ts
@@ -28,8 +28,8 @@ export type EmitsOptions = ObjectEmitsOptions | string[]
 export type EmitFn<
   Options = ObjectEmitsOptions,
   Event extends keyof Options = keyof Options
-> = Options extends any[]
-  ? (event: Options[0], ...args: any[]) => void
+> = Options extends Array<infer V>
+  ? (event: V, ...args: any[]) => void
   : {} extends Options // if the emit is empty object (usually the default value for emit) should be converted to function
     ? (event: string, ...args: any[]) => void
     : UnionToIntersection<