From dc4f9253e60ebc4cb65ea49d5a48dbb8c336638a Mon Sep 17 00:00:00 2001
From: JianJroh <rhjian@foxmail.com>
Date: Sat, 9 May 2026 14:12:20 +0800
Subject: [PATCH] fix(core): pass null to avoid serialization error

---
 packages/core/src/client/webcomponents/state/messages.ts | 2 +-
 packages/core/src/node/rpc/internal/messages-list.ts     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/core/src/client/webcomponents/state/messages.ts b/packages/core/src/client/webcomponents/state/messages.ts
index 9b3160d7..14a5794f 100644
--- a/packages/core/src/client/webcomponents/state/messages.ts
+++ b/packages/core/src/client/webcomponents/state/messages.ts
@@ -24,7 +24,7 @@ export function useMessages(context: DocksContext): Reactive<MessagesState> {
 
   const entryMap = new Map<string, DevToolsMessageEntry>()
   let isInitialFetch = true
-  let lastVersion: number | undefined
+  let lastVersion: number | null = null
 
   async function updateMessages() {
     const result = await context.rpc.call('devtoolskit:internal:messages:list', lastVersion)
diff --git a/packages/core/src/node/rpc/internal/messages-list.ts b/packages/core/src/node/rpc/internal/messages-list.ts
index 9aebd246..5b1bfd65 100644
--- a/packages/core/src/node/rpc/internal/messages-list.ts
+++ b/packages/core/src/node/rpc/internal/messages-list.ts
@@ -15,7 +15,7 @@ export const messagesList = defineRpcFunction({
   setup: (context) => {
     const host = context.messages as unknown as DevToolsMessagesHost
     return {
-      async handler(since?: number): Promise<MessagesListResult> {
+      async handler(since?: number | null): Promise<MessagesListResult> {
         const currentVersion = (host as any)._clock as number
 
         if (since == null) {