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Define PerformanceMark in global #51710

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Define PerformanceMark in global #51710

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2 changes: 2 additions & 0 deletions packages/react-native/Libraries/Core/setUpPerformance.js
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Original file line number Diff line number Diff line change
Expand Up @@ -10,12 +10,14 @@

import Performance from '../../src/private/webapis/performance/Performance';
import NativePerformance from '../../src/private/webapis/performance/specs/NativePerformance';
import {PerformanceMark} from '../../src/private/webapis/performance/UserTiming';

// In case if the native implementation of the Performance API is available, use it,
// otherwise fall back to the legacy/default one, which only defines 'Performance.now()'
if (NativePerformance) {
// $FlowExpectedError[cannot-write]
global.performance = new Performance();
global.PerformanceMark = PerformanceMark;
} else {
if (!global.performance) {
// $FlowExpectedError[cannot-write]
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