From 9bd6a903d54e20f3b59fc00d5b09dfe350993a11 Mon Sep 17 00:00:00 2001
From: Dobrunia Kostrigin <48620984+Dobrunia@users.noreply.github.com>
Date: Wed, 28 Jan 2026 18:04:37 +0300
Subject: [PATCH] fix(catchers): validate beforeSend return value to avoid
 sending invalid payload

---
 packages/javascript/package.json   | 2 +-
 packages/javascript/src/catcher.ts | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/javascript/package.json b/packages/javascript/package.json
index 84eed2b..7f9c034 100644
--- a/packages/javascript/package.json
+++ b/packages/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hawk.so/javascript",
-  "version": "3.2.13",
+  "version": "3.2.14",
   "description": "JavaScript errors tracking for Hawk.so",
   "files": [
     "dist"
diff --git a/packages/javascript/src/catcher.ts b/packages/javascript/src/catcher.ts
index 313ba93..7b78e1d 100644
--- a/packages/javascript/src/catcher.ts
+++ b/packages/javascript/src/catcher.ts
@@ -440,8 +440,10 @@ export default class Catcher {
 
       if (beforeSendResult === false) {
         throw new EventRejectedError('Event rejected by beforeSend method.');
-      } else {
+      } else if (typeof beforeSendResult === 'object' && beforeSendResult !== null) {
         payload = beforeSendResult;
+      } else if (beforeSendResult !== undefined) {
+        log('beforeSend must return event object or false. Received: ' + typeof beforeSendResult, 'warn');
       }
     }