From db24a041aaa9bba2472ac10f2dfa462b4907b455 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Fri, 8 Dec 2023 22:03:23 +0000
Subject: [PATCH] Fix the ordering in rageshakes (#12020)

* Fix the ordering in rageshakes

Fixes https://github.com/vector-im/element-web/issues/26715

* Update src/rageshake/rageshake.ts

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

---------

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
---
 src/rageshake/rageshake.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/rageshake/rageshake.ts b/src/rageshake/rageshake.ts
index 87e9752e80..261cef51f5 100644
--- a/src/rageshake/rageshake.ts
+++ b/src/rageshake/rageshake.ts
@@ -385,7 +385,8 @@ export class IndexedDBLogStore {
                     return;
                 }
                 const newLines = cursor.value.lines;
-                lines += newLines;
+                // The query returns log chunks in reverse time order, so prepend this new chunk to the buffer.
+                lines = newLines + lines;
                 sizeSoFar += newLines.length;
 
                 // If we have now exceeded the size limit, stop.