mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Oskar KwaśniewskiandFacebook GitHub Bot
90fb73e83c
Summary: This PR optimises RCTKeyWindow() calls in `RCTForceTouchAvailable` method. This method was calling RCTKeyWindow hundreds of times while scrolling on the screen. Before: On the video you can see that this function is being called **350 times** just from simple list scrolling. RCTKeyWindow is looping over app windows so it's not a cheap operation. https://github.com/facebook/react-native/assets/52801365/5b69cbd6-d148-4d06-b672-bd7b60472c13 After: the function is called only few times at the start of the app to get initial layout measurements. Solution: I think we can check just once for the force touch capabilities as devices can't change it on the fly bypass-github-export-checks ## Changelog: [IOS] [FIXED] - Optimise RCTKeyWindow() calls in RCTForceTouchAvailable method Pull Request resolved: https://github.com/facebook/react-native/pull/41935 Test Plan: CI Green Reviewed By: dmytrorykun Differential Revision: D52172510 Pulled By: cipolleschi fbshipit-source-id: 881a3125a2af4376ce65d785d8eee09c7d8f1f16