From 22fd08537a4a603d118e9a7c7a5670d0f61ca38d Mon Sep 17 00:00:00 2001
From: costrict <costrict@costrict.ai>
Date: Thu, 16 Apr 2026 15:23:05 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20fetch.ts=20preconne?=
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/costrict/provider/fetch.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/costrict/provider/fetch.ts b/src/costrict/provider/fetch.ts
index dabbf532a..e906a7995 100644
--- a/src/costrict/provider/fetch.ts
+++ b/src/costrict/provider/fetch.ts
@@ -43,8 +43,13 @@ const VERSION = getVersion()
  * 3. 注入 Authorization 和 CoStrict 特有 headers
  * 4. 反应性 401 错误恢复（自动重试一次）
  */
+type CoStrictFetchFn = {
+  (input: RequestInfo | URL, init?: RequestInit): Promise<Response>
+  preconnect?: (url: string | URL) => void
+}
+
 export function createCoStrictFetch() {
-  const costrictFetch = async (
+  const costrictFetch: CoStrictFetchFn = async (
     input: RequestInfo | URL,
     init?: RequestInit,
   ) => {