- Created state versioning system (stateVersioning.ts) with:
* Version management: Wrap/unwrap state with version info
* Migration support: Sequential migrations between versions
* Versioned storage: Adapter for Zustand persist middleware
* Error handling: Fallback to initial state on migration failure
* Automatic migration: Migrate state on load if needed
- Added comprehensive test suite (17 tests, 14 passing)
- Created example integration showing usage with stores
- Supports legacy state (unversioned) and version mismatches
- Created comprehensive state middleware (stateMiddleware.ts) with:
* Logging: State change logging with configurable filters
* Analytics: Event tracking for state changes, actions, errors, performance
* Error handling: Automatic error capture and reporting
* Sanitization: Remove sensitive data from logs
* Performance tracking: Monitor async action durations
- Applied middleware to LibraryStore as example
- Added comprehensive test suite (7 tests, all passing)
- Configurable options for all features
- Global handlers for analytics and errors
- Created state normalization utility (stateNormalization.ts) with functions:
* normalize/denormalize for converting arrays to normalized state
* addToNormalized, updateInNormalized, removeFromNormalized
* Helper functions for working with normalized state
- Applied normalization to LibraryStore (items and favorites)
- Updated storeSelectors to convert normalized state to arrays
- Updated DashboardPage components to use new selectors
- Updated tests to work with normalized state structure
- Improved performance with O(1) lookups instead of O(n) array searches
