⚡ Bolt: optimize scroll performance and reduce re-renders#4
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This commit implements several performance improvements in `src/App.jsx`: - Throttles the scroll handler using `requestAnimationFrame` to prevent layout thrashing during rapid scrolling. - Caches heading elements in a `useRef` to avoid expensive `querySelectorAll` calls on every scroll event. - Converts `filePath` to a `useRef` to prevent unnecessary re-renders when files are opened or changed, as it is only used for logic and window titles. - Uses `activeHeadingRef` to ensure state updates only occur when the active heading actually changes. - Added proper cleanup for the animation frame in `useEffect`. - Fixed unrelated linting issues (unused 'React' import, unused 'filePath' state, and control characters in regex). These changes significantly reduce CPU usage and re-render frequency during document navigation. Co-authored-by: VagueDustin <127912586+VagueDustin@users.noreply.github.com>
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⚡ Bolt: Optimized scroll performance and reduced unnecessary re-renders.
💡 What:
Implemented high-efficiency scroll handling and state management optimizations in
src/App.jsx.🎯 Why:
The previous implementation performed expensive DOM queries (
querySelectorAll) on every scroll event and triggered multiple redundant re-renders by updating state even when the active heading hadn't changed.📊 Impact:
requestAnimationFrame.🔬 Measurement:
Verified with
npm run lintandnpm run build. Visual verification performed via Playwright to ensure UI remains stable and responsive.🛠️ Other:
Fixed several pre-existing linting errors to ensure a clean build. Reverted unintentional
package-lock.jsonchanges identified during code review.PR created automatically by Jules for task 15454184821286143595 started by @VagueDustin