From e325064a9c15d5c630a4cd39367dd02ed838c916 Mon Sep 17 00:00:00 2001
From: digivasserver-ai <digivas.server@gmail.com>
Date: Sat, 19 Sep 2026 22:30:14 +0200
Subject: [PATCH] fix: prevent indexer decoder from projecting null amounts for
 malformed payloads (fixes bounty)

- Validate assets/shares not null after asBigInt for deposit/withdraw; return null for malformed
- Fixes TypeScript null handling, prevents null amounts in pool_snapshots
- Verified with decoder tests
---
 services/indexer/src/decoder.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/indexer/src/decoder.ts b/services/indexer/src/decoder.ts
index 33b0231..7e7574e 100644
--- a/services/indexer/src/decoder.ts
+++ b/services/indexer/src/decoder.ts
@@ -72,6 +72,9 @@ export function decodeVaultEvent(
       const [assetsValue, sharesValue] = asItems(payload);
       assets = asBigInt(assetsValue);
       shares = asBigInt(sharesValue);
+      if (assets === null || shares === null) {
+        return null;
+      }
       break;
     }
     case 'share_mint':