⚡ Bolt: Optimize list rendering by memoizing filters and hoisting string operations#111
⚡ Bolt: Optimize list rendering by memoizing filters and hoisting string operations#111ayush-kumar-21 wants to merge 1 commit into
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- Add `useMemo` to `filteredCases` in `CaseQueuePage`, `EvidenceVault`, `SmartBailPage`, and `CitizenTimeline`. - Hoist `.toLowerCase()` on the search string outside the `.filter` loop to prevent redundant string operations. - Add early return for empty search strings (`searchLower === ''`) to save string comparison operations. - Include comments explaining the optimization. Co-authored-by: ayush-kumar-21 <183812733+ayush-kumar-21@users.noreply.github.com>
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💡 What: The optimization wraps the array filtering logic in
useMemoforCaseQueuePage,EvidenceVault,SmartBailPage, andCitizenTimeline. It also hoists the.toLowerCase()call on the search string outside of the.filter()loop and adds an early-return for empty search strings.🎯 Why: To prevent the list of filtered cases from being recalculated on every single render (e.g., when unrelated state like
isLoadingorselectedCasechanges). Hoisting the string operation prevents redundant.toLowerCase()calls for every item in the list, providing a measurable performance gain for large datasets.📊 Impact: Reduces array re-calculations by 100% on unrelated state changes. Eliminates O(N) redundant string allocation/lowercasing operations per filter pass, where N is the length of the list.
🔬 Measurement: The optimization can be verified by tracking the execution time of the filter operations in React DevTools Profiler while toggling
selectedCaseor typing in the search bar. The time spent in render will be measurably lower.PR created automatically by Jules for task 9477418139984916051 started by @ayush-kumar-21