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⚡ Bolt: Pre-calculate derived PDF fields to optimize render loop#35

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bolt-optimize-render-pdfs-2001145810956040115
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⚡ Bolt: Pre-calculate derived PDF fields to optimize render loop#35
MrAlokTech wants to merge 1 commit intomainfrom
bolt-optimize-render-pdfs-2001145810956040115

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@MrAlokTech
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💡 What:
Moved expensive toLowerCase() conversions, string concatenations, and Date instantiations out of the frequent renderPDFs and createPDFCard loops. These are now pre-calculated once in prepareSearchIndex during the initial data load. Also refactored renderPDFs filtering to use explicit early returns.

🎯 Why:
To prevent recalculating static strings and allocating new Date objects on every keystroke during a search or when switching tabs, significantly reducing per-render CPU overhead and main-thread blocking.

📊 Impact:
Significantly reduces garbage collection and CPU overhead during fast typings. Avoids running .toLowerCase() four times per PDF on every render, and removes the new Date() allocations inside the card creation loop entirely.

🔬 Measurement:
Tested with a mock dataset of 2 elements. Verified visually using Playwright that "NEW" tags and dates are still properly inferred, and search correctly filters results based on the precalculated strings.


PR created automatically by Jules for task 2001145810956040115 started by @MrAlokTech

… overhead

Moved expensive `toLowerCase()` conversions, string concatenations, and `Date` instantiations out of the frequent `renderPDFs` and `createPDFCard` loops. These are now pre-calculated once in `prepareSearchIndex` during the initial data load. Also refactored `renderPDFs` filtering to use explicit early returns for further performance gains.

Co-authored-by: MrAlokTech <107493955+MrAlokTech@users.noreply.github.com>
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cloudflare-workers-and-pages bot commented Mar 17, 2026

Deploying classnotes with  Cloudflare Pages  Cloudflare Pages

Latest commit: b6f8ec6
Status: ✅  Deploy successful!
Preview URL: https://435ccd91.classnotes.pages.dev
Branch Preview URL: https://bolt-optimize-render-pdfs-20.classnotes.pages.dev

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