TOC highlighting refactor and robustness fixes#2443
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mettta
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Aug 28, 2025
mettta
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- Simplified and cleaned guards: removed redundant checks, unified coordinate comparisons in IntersectionObserver, simplified hash extraction.
- Robustness improvements: added viewport fallback for rootBounds=null, replaced silent guards with console.assert and moved checks to call sites.
- Efficient re-scan: introduced anchorsCount/anchorsSig to detect TOC mutations and skip unnecessary re-observe, while keeping mapping valid after resetState().
- Removed legacy code: dropped unused contentFrameTop metric and clarified inline comments.
- Hash remapping: implemented resolveMovedFragment() to transparently remap outdated hashes when TOC entries are reordered and renumbered.
stanislaw
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Aug 28, 2025
stanislaw
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Aug 28, 2025
…valid - Introduced anchorsCount/anchorsSig to detect changes and avoid redundant re-observe. - Rebuild anchor→data mapping after resetState() even if set unchanged. - Guarded handleIntersect against missing mapping during TOC mutations.
…ve checks to call sites
…hashes after TOC reorder
…or text blocks without anchors), virtual viewport
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