From 94973bc6c6b54e9837f8a54d2cea08b688cabeeb Mon Sep 17 00:00:00 2001
From: baizhi958216 <1475289190@qq.com>
Date: Thu, 11 Jun 2026 11:16:53 +0800
Subject: [PATCH] fix(tts): add non-null assertion in stepfun array access

Signed-off-by: baizhi958216 <1475289190@qq.com>
---
 lib/tts-client/stepfun.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/tts-client/stepfun.ts b/lib/tts-client/stepfun.ts
index 37ce8c0..1597fcf 100644
--- a/lib/tts-client/stepfun.ts
+++ b/lib/tts-client/stepfun.ts
@@ -13,7 +13,7 @@ function arrayBufferToBase64(buffer: ArrayBuffer): string {
   let binary = "";
   const len = bytes.byteLength;
   for (let i = 0; i < len; i++) {
-    binary += String.fromCharCode(bytes[i]);
+    binary += String.fromCharCode(bytes[i]!);
   }
   return btoa(binary);
 }