move a bunch around for publishing next package#49
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SlexAxton
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Apr 6, 2026
Optimize the real @pierre/path-store presorted 0→1 render path, cutting browser-profile visible-rows-ready time by 53% and Bun build time by 65%. Key optimizations: - Open-expansion visible-count fast path (skip generic recompute) - Natural-sort tokenization: replace matchAll()/regex with manual char-code scanner + cached sort keys - Skip redundant builder order validation for trusted preparedInput - Lazy segment sort keys (defer until first ordering use) - Single-pass manual scanner for splitCanonicalPath - Null-prototype object for segment table lookup - Lightweight presorted-path wrapper (defer parsing to store construction) - Specialized appendPresortedPaths one-pass parse+append - Fused path splitting with shared-prefix detection - Lazy file-path caches for bulk-ingested files - Direct string comparison replacing segment-array allocation - Deferred directory-index creation (no Maps during hot ingest loop) - Inline prefix comparison with explicit stack-top index - Fused linear passes replacing recursive computeSubtreeCounts - Lazy childPositionById and childIdByNameId (rebuilt on first mutation) - Eliminate backward-pass Map.get by moving aggregates to initializeOpenVisibleCounts - Parent-index cache in buildPresortedFinish forward pass - String.indexOf for SIMD-backed slash detection - Directory-prefix cache with native startsWith for ~90% of paths - Indexed for loop and file-node inlining in initializeOpenVisibleCounts - Inline internSegment with cached field references Experiments: #1–#49 (14 kept optimizations) Profile visible-rows-ready median: 230.1ms → 107.6ms (-53.2%) Bun presorted-first-render p50: 149.1ms → 52.6ms (-64.7%) Mutation guardrails unchanged: rename-leaf ~0.013ms, rename-root-dir ~0.724ms
SlexAxton
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that referenced
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Apr 6, 2026
* Optimize path-store presorted first render Optimize the real @pierre/path-store presorted 0→1 render path, cutting browser-profile visible-rows-ready time by 53% and Bun build time by 65%. Key optimizations: - Open-expansion visible-count fast path (skip generic recompute) - Natural-sort tokenization: replace matchAll()/regex with manual char-code scanner + cached sort keys - Skip redundant builder order validation for trusted preparedInput - Lazy segment sort keys (defer until first ordering use) - Single-pass manual scanner for splitCanonicalPath - Null-prototype object for segment table lookup - Lightweight presorted-path wrapper (defer parsing to store construction) - Specialized appendPresortedPaths one-pass parse+append - Fused path splitting with shared-prefix detection - Lazy file-path caches for bulk-ingested files - Direct string comparison replacing segment-array allocation - Deferred directory-index creation (no Maps during hot ingest loop) - Inline prefix comparison with explicit stack-top index - Fused linear passes replacing recursive computeSubtreeCounts - Lazy childPositionById and childIdByNameId (rebuilt on first mutation) - Eliminate backward-pass Map.get by moving aggregates to initializeOpenVisibleCounts - Parent-index cache in buildPresortedFinish forward pass - String.indexOf for SIMD-backed slash detection - Directory-prefix cache with native startsWith for ~90% of paths - Indexed for loop and file-node inlining in initializeOpenVisibleCounts - Inline internSegment with cached field references Experiments: #1–#49 (14 kept optimizations) Profile visible-rows-ready median: 230.1ms → 107.6ms (-53.2%) Bun presorted-first-render p50: 149.1ms → 52.6ms (-64.7%) Mutation guardrails unchanged: rename-leaf ~0.013ms, rename-root-dir ~0.724ms * review edits, mostly comments and docs
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