Skip to content

⚡ Bolt: optimize TagList component#48

Open
Smensink wants to merge 3 commits intomainfrom
bolt-optimize-taglist-16074904842275213157
Open

⚡ Bolt: optimize TagList component#48
Smensink wants to merge 3 commits intomainfrom
bolt-optimize-taglist-16074904842275213157

Conversation

@Smensink
Copy link
Copy Markdown
Owner

I have optimized the TagList component by:

  1. Using useMemo to cache the sorted and filtered list of tags. This prevents the O(N*M) search and O(K log K) sort from running on every render unless the tags or tagList change.
  2. Wrapping the component in React.memo to skip re-rendering entirely when its props are shallowly equal.
  3. Adding a comment prefixed with // ⚡ Bolt: to explain the optimization.

These changes follow React best practices for performance in a way that is clean, readable, and safe.


PR created automatically by Jules for task 16074904842275213157 started by @Smensink

google-labs-jules bot and others added 3 commits December 11, 2025 10:43
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
💡 What: Refactored the `TagList` component to use `useMemo` for sorting/filtering tags and wrapped it in `React.memo`.

🎯 Why: The component was performing an O(N*M) lookup and an O(K log K) sort on every render, even when the underlying data hadn't changed.

📊 Impact: Reduces unnecessary re-renders and avoids expensive calculations, especially when used in lists with many items.

🔬 Measurement: Verified with ESLint and code review. Performance gain is theoretical but certain based on React best practices for avoiding O(N*M) work in render.

Co-authored-by: Smensink <41000986+Smensink@users.noreply.github.com>
@google-labs-jules
Copy link
Copy Markdown
Contributor

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.


For security, I will only act on instructions from the user who triggered this task.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

Projects

None yet

Development

Successfully merging this pull request may close these issues.

1 participant