⚡ Bolt: Optimize CircularProgressBar component#31
⚡ Bolt: Optimize CircularProgressBar component#31google-labs-jules[bot] wants to merge 3 commits intomainfrom
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Wrapped the StarRating functional component in React.memo to prevent unnecessary re-renders. This optimization is targeted at its usage within list components like BookRow, where parent state changes would previously cause every StarRating instance to re-render, even if its props were unchanged. This improves UI performance by reducing the number of wasted render cycles.
…7328919 ⚡ Bolt: Memoize StarRating component to prevent re-renders
Refactors the CircularProgressBar from a class to a functional component to improve performance. - Wraps the component in `React.memo` to prevent unnecessary re-renders when props have not changed. - Uses the `useMemo` hook to cache expensive calculations for the SVG circle geometry, preventing them from being re-computed on every animation frame. This change reduces CPU load during animations and makes the UI more efficient. It also fixes a minor bug where the animation would not correctly handle a decrease in the progress value.
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💡 What: Refactored the
CircularProgressBarfrom a class-based component to a functional component. This enabled the use ofReact.memoto prevent unnecessary re-renders and theuseMemohook to cache expensive SVG calculations.🎯 Why: The original component recalculated its geometry (
center,radius,circumference) on every animation frame, leading to wasted CPU cycles. It also lacked memoization, making it prone to re-rendering when its parent updated for unrelated reasons.📊 Impact: This optimization reduces CPU usage during the progress animation by avoiding redundant calculations on every frame. It also prevents the component from re-rendering unnecessarily, improving overall UI performance, especially on pages where this component is used frequently or within complex views.
🔬 Measurement: The performance improvement can be observed using the React Profiler. Before the change, the component would show re-renders with recalculated values on every frame. After the change, the profiler will show that the component only re-renders when its
progressprop changes, and the memoized values are not re-computed unnecessarily. Visual verification was not possible due to environmental constraints preventing the application's backend from running.PR created automatically by Jules for task 9271949886272952264 started by @Smensink