@matthew.ngo/reform/src/docs/todo.md

A flexible and powerful React form management library with advanced validation, state observation, and multi-group support

# Reform Component Improvements

## Type Safety Enhancements
- [x] Improve field path type safety with `FieldPath` type
- [ ] Add better type inference for nested objects
- [ ] Improve TypeScript generics for better IDE suggestions

## API Improvements
- [x] Add batch operations for multiple groups
  - [x] `batchUpdate` function to update multiple groups at once
  - [x] `batchRemove` function to remove multiple groups
- [x] Add form reset functionality
  - [x] `resetForm` method with optional default values
- [x] Support for field arrays within groups
  - [x] Array helpers (append, remove, move)
- [x] Add conditional fields support
  - [x] `when` method for conditional rendering/validation

## High Priority Additions
- [x] Form Wizard/Multi-step Forms
  - [x] Step management and navigation
  - [x] Per-step validation
  - [x] Step completion tracking
- [x] Form Persistence
  - [x] Save/restore form state from storage
  - [x] Auto-save functionality
- [x] Dynamic Schema Validation
  - [x] Update validation rules based on field values
  - [x] Context-aware validation

## Performance Optimizations
- [x] Add memoization for expensive operations
- [ ] Implement virtualization for large forms
- [x] Optimize re-renders with React.memo and useCallback
- [ ] Form Performance Optimization for large datasets

## Better Integration with Libraries
- [x] Enhanced Yup integration
  - [x] Support for transformers in schema creation
  - [x] Better context passing in validation
- [ ] Improved React Hook Form features
  - [ ] Utilize `watch` API for field monitoring
  - [ ] Add form state observer/subscription

## Documentation
- [ ] Create comprehensive API documentation
- [ ] Add usage examples for common scenarios
- [ ] Document best practices for form validation

## Error Handling
- [x] Improve error messages and formatting
  - [x] Define `ErrorMessageFormat` type with support for HTML/JSX rendering
  - [x] Create `ErrorTransformer` interface for custom error transformations
  - [x] Implement `useErrorFormatter` hook for consistent error formatting
- [x] Add error boundary for form components
  - [x] Create `FormErrorBoundary` component with `ErrorBoundaryProps` interface
  - [x] Define `ErrorFallbackProps` type for custom error fallback components
  - [x] Add error recovery strategies with `RecoveryStrategy` type
- [x] Support for custom error renderers
  - [x] Define `ErrorRendererProps<T>` generic interface for field-specific errors
  - [x] Create `ErrorRendererContext` for form-wide error rendering configuration
  - [x] Implement `registerErrorRenderer` method for custom field error displays

## Advanced Features
- [ ] Form Transformation (display vs storage format)
- [ ] Form History/Undo-Redo functionality
- [ ] Form Accessibility enhancements
- [ ] Form Analytics integration

## Testing
- [ ] Add unit tests for all core functionality
- [ ] Create integration tests for form workflows
- [ ] Add performance benchmarks