v0.4.10

MeoNode UI v0.4.10 – Performance & Unmounter Fixes

Release Date: 2025-11-20

Fixes

• unmounter: prevent redundant FinalizationRegistry callbacks (59f5adf)
  • Explicitly unregister node from cacheCleanupRegistry on unmount
  • Prevents double cleanup when node is both unmounted and GC'd
  • Improves cleanup efficiency and reduces unnecessary registry callbacks

Perf

• util: optimize prop processing and child handling (be26488)

  • Conditional sort: only sort keys if length > 1 (eliminates unnecessary sorts)
  • Replace for...in with Object.keys() iteration for better performance and safety
  • Add fast path for single child processing (non-array or 1-element array)
  • Avoid unnecessary array operations for common single-child case
  • Performance impact:
    • Reduced CPU overhead for small prop objects
    • Faster iteration with Object.keys() vs for...in
    • Eliminates array map() call for single child components

• core: add exception safety and optimize render method (5aad000)

  • Wrap render logic in try-finally to ensure renderContext is always released
  • Null out workStack slots before releasing to help GC
  • Pre-allocate finalChildren array to avoid resizing during iteration
  • Replace non-null assertion with explicit error handling for better debugging
  • Add object pooling for workStack and renderedElements (reduces GC pressure)
  • Pool capped at 50 contexts with 2048-item limit to prevent memory issues
  • Exception safety ensures cleanup even if rendering throws

Test

• perf: add React comparison tests with memory tracking (bc66d54)

  • Add comprehensive performance comparison between React.createElement and MeoNode
  • Test both flat (10k nodes) and nested (5k nodes) structures
  • Include memory usage measurements (initial + after 100 updates)
  • Reduce nested nodes from 10k to 5k to prevent stack overflow with StyledRenderer
  • Add table output with time and memory columns for clear comparison
  • Add GC availability warning for accurate measurements
  • Provides detailed performance and memory behavior insights during re-renders
  • Avoids stack overflow in deeply nested test scenarios

• performance: enhance performance metrics report formatting and adjust thresholds (6f3abe4)

  • Improve table formatting for performance metrics
  • Adjust test thresholds based on optimization results
  • Enhanced reporting for better visibility into performance characteristics

Version Update

• Current version: 0.4.10

Changelog & Commits

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