Update getCurrentTime

facebook · Nov 9, 2020 · 5ea434b · 5ea434b
1 parent d8a13be
commit 5ea434b
Showing 1 changed file with 4 additions and 11 deletions.
diff --git a/packages/scheduler/src/forks/SchedulerPostTaskOnly.js b/packages/scheduler/src/forks/SchedulerPostTaskOnly.js
@@ -39,17 +39,10 @@ import {
 
 import {enableIsInputPending} from '../SchedulerFeatureFlags';
 
-let getCurrentTime;
-const hasPerformanceNow =
-  typeof performance === 'object' && typeof performance.now === 'function';
-
-if (hasPerformanceNow) {
-  const localPerformance = performance;
-  getCurrentTime = () => localPerformance.now();
-} else {
-  const localDate = Date;
-  const initialTime = localDate.now();
-  getCurrentTime = () => localDate.now() - initialTime;
+const perf = window.performance;
+
+function getCurrentTime() {
+  return perf.now();
 }
 
 // Max 31 bit integer. The max integer size in V8 for 32-bit systems.