Optimize SendButton memo comparison for fewer re-renders #889
+2
−1
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# Optimization for SendButton re-rendering ## What changed Optimized the React.memo comparison function for SendButton to only trigger re-renders when the disabled state would actually change. The comparison now explicitly checks for transitions between empty/non-empty states rather than re-rendering on every input change: - Input transitions from empty to non-empty (or vice versa) - Upload queue transitions from empty to non-empty (or vice versa) ## Why this matters This change significantly reduces unnecessary re-renders when typing in the input field. Previously, any character added or removed would trigger a re-render of the SendButton component, even though its visual state only changes when transitioning between empty and non-empty states. ## Performance impact In large chat applications with frequent typing, this optimization helps reduce rendering overhead and improves responsiveness, particularly on lower-end devices. ## Testing Verified that the button properly updates its disabled state when: - Input field transitions between empty and non-empty - Upload queue changes state
|
@BhuvanSA is attempting to deploy a commit to the Vercel Team on Vercel. A member of the Team first needs to authorize it. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Optimization for SendButton re-rendering
What changed
Optimized the React.memo comparison function for SendButton to only trigger re-renders when the disabled state would actually change.
The comparison now explicitly checks for transitions between empty/non-empty states rather than re-rendering on every input change:
Why this matters
This change significantly reduces unnecessary re-renders when typing in the input field. Previously, any character added or removed would trigger a re-render of the SendButton component, even though its visual state only changes when transitioning between empty and non-empty states.
Performance impact
In large chat applications with frequent typing, this optimization helps reduce rendering overhead and improves responsiveness, particularly on lower-end devices.
Testing
Verified that the button properly updates its disabled state when: