fix: Check for performance.timing in webworkers (getsentry#2491)

HazAT · web-flow · commit c629a0d19de8 · 2020-03-12T10:15:57.000+01:00
* fix: Check for performance.timing in webworkers

* chore: Changelog

* fix: Typo

* chore: Comment
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
+- [apm] fix: Check for performance.timing in webworkers (#2491)
 - [apm] ref: Remove performance clear entry calls (#2490)
 
 ## 5.14.0
diff --git a/packages/utils/src/misc.ts b/packages/utils/src/misc.ts
@@ -378,6 +378,16 @@ export const crossPlatformPerformance: Pick<Performance, 'now' | 'timeOrigin'> =
     // is not as widely supported. Namely, performance.timeOrigin is undefined in Safari as of writing.
     // tslint:disable-next-line:strict-type-predicates
     if (performance.timeOrigin === undefined) {
+      // For webworkers it could mean we don't have performance.timing then we fallback
+      // tslint:disable-next-line:deprecation
+      if (!performance.timing) {
+        return performanceFallback;
+      }
+      // tslint:disable-next-line:deprecation
+      if (!performance.timing.navigationStart) {
+        return performanceFallback;
+      }
+
       // @ts-ignore
       // tslint:disable-next-line:deprecation
       performance.timeOrigin = performance.timing.navigationStart;
