From 41edb79a1a627b1dc83c1b481387469b155f828a Mon Sep 17 00:00:00 2001
From: Sylar <Sylar@fanruan.com>
Date: Tue, 3 Jan 2023 17:05:35 +0800
Subject: [PATCH] =?UTF-8?q?=E6=97=A0JIRA=20fix:=20extend=20=E7=B1=BB?=
 =?UTF-8?q?=E5=9E=8B=E4=BF=AE=E5=A4=8D?=
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---
 typescript/core/base.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/typescript/core/base.ts b/typescript/core/base.ts
index 137f6c2da..5cc0a010c 100644
--- a/typescript/core/base.ts
+++ b/typescript/core/base.ts
@@ -178,7 +178,7 @@ export interface _base {
     functions: (object: object) => string[];
 
     extend<T extends object>(object: T): T;
-    extend<T extends object, U>(object: T, ...sources: U[]): T & UnionToIntersection<NonNullable<U>>;
+    extend<T extends object, U extends unknown[]>(object: T, ...sources: U): T & UnionToIntersection<NonNullable<U[number]>>;
 
     defaults: (object: object, ...sources: any[]) => object;