From 3aaee12327952c0fa6919a424fb36c4ac2d344c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9s=20Alvarez?=
 <andres.alvarez@andresalvarez-MacBook-Pro-7R6H.local>
Date: Fri, 24 Nov 2023 09:12:42 +0100
Subject: [PATCH] feat(packages/sui-react-web-vitals): add presentationTime
 comment

---
 packages/sui-react-web-vitals/src/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/sui-react-web-vitals/src/index.js b/packages/sui-react-web-vitals/src/index.js
index f391c2e88..aa1ee42ea 100644
--- a/packages/sui-react-web-vitals/src/index.js
+++ b/packages/sui-react-web-vitals/src/index.js
@@ -81,6 +81,9 @@ export default function WebVitalsReporter({
     }
 
     const computeINPMetrics = entry => {
+      // RenderTime is an estimate because duration is rounded and may get rounded down.
+      // In rare cases, it can be less than processingEnd and that breaks performance.measure().
+      // Let's ensure it's at least 4ms in those cases so you can barely see it.
       const presentationTime = Math.max(entry.processingEnd + 4, entry.startTime + entry.duration)
 
       return {