From c89aa3bdab4800fa6e455f7924e607f504bf559b Mon Sep 17 00:00:00 2001
From: Scott Martin <scott-is@live.com.au>
Date: Tue, 3 Sep 2024 14:43:00 -0300
Subject: [PATCH] Update call_builder.ts

---
 src/horizon/call_builder.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/horizon/call_builder.ts b/src/horizon/call_builder.ts
index e7fba4495..132d62ec4 100644
--- a/src/horizon/call_builder.ts
+++ b/src/horizon/call_builder.ts
@@ -13,7 +13,7 @@ import type { Server } from "../federation";
 const JOINABLE = ["transaction"];
 
 export interface EventSourceOptions<T> {
-  onmessage?: (value: T) => void;
+  onmessage?: (value: T extends ServerApi.CollectionPage<infer U> ? U : T) => void;
   onerror?: (event: MessageEvent) => void;
   reconnectTimeout?: number;
 }