mvi 2.0.0

A Flutter package that applies the MVI architectural pattern to help manage app state and logic in a structured and maintainable way.

2.0.0

🚨 BREAKING CHANGES - Complete Architecture Rewrite

This is a major rewrite of the MVI package with significant breaking changes.

New Architecture

• Replaced signals with ValueListenable: Now uses Flutter's built-in ValueListenable and ValueNotifier for reactive state management
• Dual ViewModel approach:
  • SimpleViewModel for basic state management without effects
  • ViewModel for full MVI pattern with effects support
• New mixins:
  • SimpleViewModelMixin for connecting widgets to SimpleViewModels
  • ViewModelMixin for connecting widgets to ViewModels with effects
• Method rename: provideViewModel() renamed to createViewModel() for better clarity

Migration Guide

This version is not backward compatible. To migrate:

1. Replace BaseViewModel with either SimpleViewModel or ViewModel
2. Update your mixins to use SimpleViewModelMixin or ViewModelMixin
3. Rename provideViewModel() to createViewModel()
4. Replace signals-based state observation with ValueListenableBuilder

Examples

• Added complete counter example demonstrating basic MVI pattern
• Updated login/posts example with new architecture

1.0.6

• Log information about the ViewModel when debugLabel is not null

1.0.5

• Simplify code

1.0.4

• Add debugLabel property to the view model
• Add debugLabel parameter support to the select method
• Improve the example

1.0.3

• Use signals_flutter instead of signals as dependency
• Export Watch from signals_flutter

1.0.2

• Add cast method to BaseState

1.0.1

• Refactor some code and add more tests.

1.0.0

• Initial release.