From ebda00dc74a4b1a74e8458a9e810f351c88987ce Mon Sep 17 00:00:00 2001
From: softsimon <softsimon@protonmail.com>
Date: Mon, 6 Jun 2022 14:31:17 +0400
Subject: [PATCH] Send empty list of transactions if data isn't available yet

---
 backend/src/api/websocket-handler.ts | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/backend/src/api/websocket-handler.ts b/backend/src/api/websocket-handler.ts
index c5c2999b2..9632b03e3 100644
--- a/backend/src/api/websocket-handler.ts
+++ b/backend/src/api/websocket-handler.ts
@@ -116,12 +116,10 @@ class WebsocketHandler {
               const index = parsedMessage['track-mempool-block'];
               client['track-mempool-block'] = index;
               const mBlocksWithTransactions = mempoolBlocks.getMempoolBlocksWithTransactions();
-              if (mBlocksWithTransactions[index]) {
-                response['projected-block-transactions'] = {
-                  index: index,
-                  blockTransactions: mBlocksWithTransactions[index].transactions
-                };
-              }
+              response['projected-block-transactions'] = {
+                index: index,
+                blockTransactions: mBlocksWithTransactions[index]?.transactions || [],
+              };
             } else {
               client['track-mempool-block'] = null;
             }