Fix test

GoogleChrome · Apr 12, 2024 · 2aff58b · 2aff58b
1 parent 25c29bd
commit 2aff58b
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/attribution/onTTFB.ts b/src/attribution/onTTFB.ts
@@ -24,10 +24,11 @@ import {
 } from '../types.js';
 
 const attributeTTFB = (metric: TTFBMetric): void => {
-  // Only attribute if you have a non-zero value and a navigationEntry entry
+  // Only attribute if you have a non-zero responseStart value and a
+  // navigationEntry entry.
   // E.g. For cross-origin redirects, Safari has a workerStart time but no
   // TTFB time, so do not provide attribution for that.
-  if (metric.value && metric.entries.length) {
+  if (metric.entries.length && metric.entries[0].responseStart) {
     const navigationEntry = metric.entries[0];
     const activationStart = navigationEntry.activationStart || 0;