v0.4.8

MeoNode UI v0.4.8 – Iterative Rendering, Stronger Types & Performance Testing

Release Date: 2025-11-18

Feat

• client: add generic type parameter to render function for stronger type safety (90a770e)
• core: improve BaseNode rendering with iterative traversal and memory optimizations (1d5330a)
  • Introduce WorkItem interface to represent nodes in the iterative work stack during BaseNode rendering.
  • Replace recursive render traversal with an iterative depth-first approach using a preallocated workStack array for better performance and reduced call stack usage.
  • Implement dynamic resizing of workStack array to handle arbitrary tree sizes efficiently.
  • Update BaseNode’s internal caching fields (lastPropsRef and lastSignature) to be public and consistently used for stable key generation.
  • Modify MeoNodeUnmounter component to accept BaseNode instance and clear its lastPropsRef and lastSignature on unmount to prevent memory leaks.
  • Refine type annotations across node utilities and factory functions for stronger type safety (Record<string, unknown> instead of any).
  • Optimize critical prop extraction logic by replacing Set and startsWith checks with faster inline charCode comparisons.
  • Clean up and clarify utility methods related to prop signature creation, shallow equality, and portal management.
  • Improve node.util.ts by adjusting caching strategies, prop categorization, and React element handling for better robustness and maintainability.

Fixes

• navigation-cache-manager: add proper typing and global window declaration for cleanup flag (6180d40)

Refactor

• improve typings and type safety in theme util and styled renderer (dbe1f33)
  • Added explicit TypeScript types (e.g., CssProp, Record<string, unknown>) for variables and function signatures in styled-renderer.client.ts and theme.util.ts.
  • Updated cache maps to use more precise generic types for better type inference and safety.
  • Enhanced resolveObjWithTheme and related theme resolution logic with stronger typing and nullish coalescing.
  • Improved error handling for invalid theme path values.
  • Applied copy-on-write pattern with properly typed arrays and objects during theme resolution.
  • Strengthened type guards, e.g., isPlainObject type predicate.
  • Minor fixes to variable declarations with explicit types for clarity and consistency.

Chore

• babel: update preset-env targets and expand plugin exclusions (f38cd24)
  • Set preset-env targets to support ES modules
  • Enable bugfixes option
  • Add multiple plugins to exclude list for better optimization
  • Clean up formatting of root, alias, extensions, and exclude fields

Test

• performance: add comprehensive performance tests and metrics reporting (c3d7a81)
  • Add detailed performance tests measuring render times for realistic layouts, 10,000 flat nodes, and 10,000 deeply nested nodes.
  • Introduce a heavy state changes test to detect memory leaks and ensure responsiveness under frequent updates.
  • Collect and log performance metrics including median render times and memory usage for analysis.
  • Add tests for stableKey generation performance with identical, shallowly equal, unique, large, and complex CSS props.
  • Enhance test suite with CSS styling for better visualization and interaction during tests.
  • Improve cleanup and reporting to avoid resource leaks and provide clearer performance insights.

Version Update

• Current version: 0.4.8

Changelog & Commits

• View Full Changelog
• Browse All Commits