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MEDHIRA

Engineering Intelligence Across Everything

MEDHIRA builds open-source libraries for mobile and web developers with a focus on clear documentation and maintainable APIs.

medhira-rn-styles-cache

A lightweight React Native library that caches dynamic styles using LRU eviction and stable hashing.

Problem

Apps that build style objects from props, themes, or layout often call StyleSheet.create repeatedly for the same shape. That adds allocation and registration work on hot paths.

Solution

  • Flatten input with StyleSheet.flatten
  • Hash flattened styles with canonical JSON + SHA-256
  • Store results in per-theme LRU caches
  • Return the same registered style reference for equivalent inputs

Performance notes

  • Fewer redundant StyleSheet.create calls
  • Bounded memory via LRU max (configurable)
  • Theme-scoped clears for theme switches

Contributing

See CONTRIBUTING.md on GitHub.

Support

License

MIT

Made with care by MEDHIRA