From 960044eb2da1e5aa988e9dd108acb1b6402aec51 Mon Sep 17 00:00:00 2001
From: wenliang <wenliang@wenliangs-MacBook-Pro.local>
Date: Thu, 12 Feb 2026 12:44:54 +0800
Subject: [PATCH] Fix: Return empty string for invalid symbol in
 formatSymbolForTradingView (CodeRabbit feedback)

---
 lib/utils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/utils.ts b/lib/utils.ts
index 25c2452..9d8362d 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -155,7 +155,7 @@ export const getFormattedTodayDate = () => new Date().toLocaleDateString('en-US'
 });
 
 export function formatSymbolForTradingView(symbol: string): string {
-    if (!symbol) return symbol;
+    if (!symbol) return '';
     const upperSymbol = symbol.toUpperCase();
     
     // Shanghai