🐛 [RUMF-791] prevent IE11 performance entry error (#633)

* 🐛 [RUMF-791] prevent IE11 performance entry error toJSON is not available in IE11, prevent execution error * 👌 different form Co-authored-by: Benoît Zugmeyer <benoit.zugmeyer@datadoghq.com> Co-authored-by: Benoît Zugmeyer <benoit.zugmeyer@datadoghq.com>
DataDog · Nov 24, 2020 · 42f589f · 42f589f
1 parent a5c6271
commit 42f589f
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/packages/rum/src/domain/rumEventsCollection/resource/matchRequestTiming.ts b/packages/rum/src/domain/rumEventsCollection/resource/matchRequestTiming.ts
@@ -24,8 +24,13 @@ export function matchRequestTiming(request: RequestCompleteEvent) {
   if (!performance || !('getEntriesByName' in performance)) {
     return
   }
-  const candidates = performance
-    .getEntriesByName(request.url, 'resource')
+  const sameNameEntries = performance.getEntriesByName(request.url, 'resource')
+
+  if (!sameNameEntries.length || !('toJSON' in sameNameEntries[0])) {
+    return
+  }
+
+  const candidates = sameNameEntries
     .map((entry) => entry.toJSON() as RumPerformanceResourceTiming)
     .filter(toValidEntry)
     .filter((entry) => isBetween(entry, request.startTime, endTime(request)))