From d24dffc0a8ecf7edd1376c2aa0f09224edabfd44 Mon Sep 17 00:00:00 2001
From: "zhanxin.xu" <90450068+1329576606@users.noreply.github.com>
Date: Mon, 23 Oct 2023 15:12:23 +0800
Subject: [PATCH] fix log.js iterator

fix log.js iterator
---
 src/oplog/log.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/oplog/log.js b/src/oplog/log.js
index 36cc977..506e414 100644
--- a/src/oplog/log.js
+++ b/src/oplog/log.js
@@ -434,7 +434,7 @@ const Log = async (identity, { logId, logHeads, access, entryStorage, headsStora
 
     if (useBuffer) {
       const endIndex = buffer.keys.length
-      const startIndex = endIndex - amount
+      const startIndex = endIndex > amount ? endIndex - amount : 0
       const keys = buffer.keys.slice(startIndex, endIndex)
       for (const key of keys) {
         const hash = buffer.get(key)