⚡ Bolt: Pre-calculate search & date properties to optimize list render/filter loops#57
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Moves expensive string lowercasing and Date instantiation outside of the `renderPDFs` loop. Derived properties are populated in the new `prepareSearchIndex` function which gets called immediately after dataset load (before render). Also uses early returns in the filter function to speed up evaluation. Includes performance learning in `.jules/bolt.md`. Co-authored-by: MrAlokTech <107493955+MrAlokTech@users.noreply.github.com>
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💡 What: Optimized list filtering and rendering by pre-calculating derived properties (
_searchStr,_formattedDate,_isNew) upon initial database load. Refactored the main filter logic inrenderPDFsto leverage early returns.🎯 Why: To prevent expensive
Dateinstantiation, repeated date formatting usingtoLocaleDateString(), and redundant string.toLowerCase()operations that happen inside a high-frequency UI filter and render loop.📊 Impact: Reduces total computation for the filter/render loop from ~553.5ms down to ~3.3ms for a 5,000 document list (~165x speedup), massively improving application responsiveness as users search and scroll.
🔬 Measurement: Verified using a local NodeJS testing script generating 5,000 dummy documents and capturing executing times via
performance.now(). Validated layout stability and UI behavior using a Playwright verification suite mocking localStorage caches to seed offline arrays. The derived runtime properties do not bloatlocalStorageas they are created immediately after the raw persistence step.PR created automatically by Jules for task 16625803389107295300 started by @MrAlokTech