Track animation names in CSS analysis

[bartveneman]

Summary

This PR adds tracking and analysis of animation names used in CSS animations, complementing the existing analysis of animation durations and timing functions.

Key Changes

• New animation name collection: Added animationNames collection to track all animation names used in stylesheets
• Enhanced analyzeAnimation function: Extended to emit name type items for animation identifiers while filtering out reserved keywords (direction, fill-mode, play-state, iteration-count, and timing-function keywords)
• Support for both animation and animation-name properties:
  • Extracts names from animation shorthand property
  • Extracts names from dedicated animation-name property
• Updated output structure: Added names field to animations object in analysis results, containing total count, unique count, and uniqueness ratio
• Comprehensive test coverage: Added 10 new tests covering various animation name scenarios including edge cases with reserved keywords and custom property names

Implementation Details

• Created ANIMATION_NON_NAME_KEYWORDS set to distinguish animation names from other valid animation shorthand keywords
• Animation names are only collected when the property is animation or animation-name (not for transition)
• Properly handles both standard animation names and custom property names (e.g., --my-name)
• Maintains consistency with existing collection patterns for durations and timing functions

https://claude.ai/code/session_01HVDNrfgMVDeSY69NYHoYH2

[codecov-commenter]

Bundle Report

Changes will increase total bundle size by 750 bytes (0.94%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
analyzeCss-esm	80.54kB	750 bytes (0.94%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: analyzeCss-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
index.js	431 bytes	33.61kB	1.3%
index.d.ts	33 bytes	14.66kB	0.23%
browserhacks-D2pBB19t.js (New)	9.26kB	9.26kB	100.0% 🚀
browserhacks-BZeV9_0h.js (Deleted)	-8.97kB	0 bytes	-100.0% 🗑️

Files in index.js:

• ./src/index.ts → Total Size: 26.95kB

Files in browserhacks-D2pBB19t.js:

• ./src/values/animations.ts → Total Size: 1.12kB

[codecov-commenter]

Codecov Report

❌ Patch coverage is 72.72727% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.25%. Comparing base (f175af0) to head (9f333f4).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/index.ts	62.50%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #608      +/-   ##
==========================================
- Coverage   94.48%   94.25%   -0.24%     
==========================================
  Files          18       18              
  Lines        1016     1027      +11     
  Branches      321      325       +4     
==========================================
+ Hits          960      968       +8     
- Misses         46       48       +2     
- Partials       10       11       +1     

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