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This commit refactors `messagesSignature` and `useStickToBottom` in the chat application by replacing `[...].join('|')` with template string concatenation. This prevents unneeded array allocations on frequently run paths (like rendering on streaming chunks or polling).
Co-authored-by: bobdivx <6737167+bobdivx@users.noreply.github.com>
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💡 What: Replaced
[...].join('|')with direct template string concatenation (${a}|${b}|...) when generating state signatures in the chat UI.🎯 Why:
Array.prototype.join()allocates an intermediate array and then creates a string. In paths that run frequently, such as React renders triggered during streaming message chunks or fast polling, this causes unnecessary memory and CPU overhead via garbage collection.📊 Impact: Reduces intermediate array memory allocations to 0 for these specific functions, cutting down GC pauses on long chat sessions.
🔬 Measurement: Verify frontend rendering behavior under high load/streaming. Run the full frontend test suite (
npm test --prefix apps/web/vitest run).PR created automatically by Jules for task 10202011853379162989 started by @bobdivx