fix: safe performance.getEntriesByType

Some browsers do not support this method, so we check for its existence before measuring the time taken. Fixes CLIENT-SIDE-PROD-CSXR Fixes CLIENT-SIDE-PROD-CTRH
guardian · Aug 25, 2022 · a64ff08 · a64ff08
1 parent 6bf9d21
commit a64ff08
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/dotcom-rendering/src/web/browser/islands/doHydration.ts b/dotcom-rendering/src/web/browser/islands/doHydration.ts
@@ -48,6 +48,8 @@ export const doHydration = (
  return { clientOnly, timeTaken };
  })
  .then(({ clientOnly, timeTaken }) => {
+ if (!('getEntriesByType' in window.performance)) return;
+
  // Log performance info
  const { duration: download = -1 } =
  window.performance