From 36b8f5303f1d0731d03b791a842fe3128844d5b4 Mon Sep 17 00:00:00 2001
From: Paul D'Ambra <paul@posthog.com>
Date: Tue, 9 Jan 2024 09:29:55 +0000
Subject: [PATCH] fix: add a comment explaining browser type prop (#952)

---
 src/posthog-core.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/posthog-core.ts b/src/posthog-core.ts
index 4647f9bf0..1d4e1bcb7 100644
--- a/src/posthog-core.ts
+++ b/src/posthog-core.ts
@@ -994,6 +994,8 @@ export class PostHog {
             properties['$duration'] = parseFloat((duration_in_ms / 1000).toFixed(3))
         }
 
+        // this is only added when this.config.opt_out_useragent_filter is true,
+        // or it would always add "browser"
         if (userAgent && this.config.opt_out_useragent_filter) {
             properties['$browser_type'] = _isBlockedUA(userAgent, this.config.custom_blocked_useragents)
                 ? 'bot'