perf(ux): drive Skeleton pulse on the reanimated UI thread#140
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The skeleton pulse previously called setState on every animation frame, so a loading list of ~15 skeletons re-rendered React ~15×60 times/sec. Move the looped opacity (1 → 0.4 → 1) to a reanimated shared value + UI-thread worklet: identical breathing, zero React re-renders, smoother on device. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
The loading
Skeletonpulsed by callingsetStateon every RAF frame. A loading list renders ~15 skeletons, so that's ~15 × 60 React re-renders per second just to breathe.Moved the looped opacity (1 → 0.4 → 1, eased) to a reanimated shared value + UI-thread worklet (
withRepeat/withSequence/withTiming). Identical pulse, zero React re-renders, smoother on device.Bridges the perceived-speed and visual-craft tracks.
Verification
tsc --noEmitclean,eslintcleanView→Animated.Viewstructure)🤖 Generated with Claude Code