⚡ Bolt: optimize scroll performance and reduce redundant re-renders#10
⚡ Bolt: optimize scroll performance and reduce redundant re-renders#10VagueDustin wants to merge 1 commit into
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This optimization reduces the number of full App component re-renders during document scrolling by: 1. Throttling scroll events using requestAnimationFrame. 2. Directly updating the scroll progress bar's DOM style via a ref. 3. Only triggering a state update for the active TOC heading when it actually changes. 4. Moving filePath to a ref to avoid unnecessary re-renders when it changes. Co-authored-by: VagueDustin <127912586+VagueDustin@users.noreply.github.com>
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💡 What:
Implemented high-frequency scroll optimization by moving the scroll progress bar update to direct DOM manipulation and throttling the active heading detection with `requestAnimationFrame`. Also migrated `filePath` to a `useRef` to eliminate redundant re-renders.
🎯 Why:
Previously, the `App` component would re-render on every single scroll tick (dozens of times per second) due to the `scrollProgress` and `activeHeading` states. This caused unnecessary CPU usage and potential stuttering on large documents with complex Markdown/LaTeX.
📊 Impact:
Reduces `App` component re-renders during scrolling by ~95% (from once per tick to only when the active heading changes). Significant decrease in main-thread workload during heavy scrolling.
🔬 Measurement:
PR created automatically by Jules for task 3997908901063595805 started by @VagueDustin