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Rubén Norte 529f55c8c9 Implement performance.timeOrigin (#53660)
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53660

Changelog: [internal]

(This is internal because these APIs aren't enabled in OSS yet)

Implements `performance.timeOrigin` to allow converting timestamps from `performance.now()` to be based on the Unix epoch.

This implementation isn't fully spec-compliant to align with the current implementation of `performance.now()`, where the base of the clock is system boot time instead of app startup / navigation time.

Reviewed By: huntie

Differential Revision: D82016724

fbshipit-source-id: e3a066721cecf41e2fd963beb94a0a2f1c5d6493
2025-09-10 04:48:55 -07:00
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2025-04-02 17:27:55 -07:00