Pros of Redux

• Widely adopted and well-maintained by the Redux team
• Extensive ecosystem with many middleware and tools
• Flexible and can be used with any UI library or framework

Cons of Redux

• Requires more boilerplate code
• Learning curve can be steeper for beginners
• Performance can be an issue with large state trees

Code Comparison

Redux:

import { createStore } from 'redux'

const rootReducer = (state = {}, action) => {
  // Reducer logic
}

const store = createStore(rootReducer)

Redux-Immutable:

import { createStore } from 'redux'
import { combineReducers } from 'redux-immutable'
import Immutable from 'immutable'

const rootReducer = combineReducers({
  // Reducers
})

const store = createStore(rootReducer, Immutable.Map())

Key Differences

• Redux-Immutable focuses on using Immutable.js with Redux
• Redux-Immutable provides a custom combineReducers function
• Redux-Immutable initializes the store with an Immutable.Map()

Use Cases

• Redux: General-purpose state management for React applications
• Redux-Immutable: When you want to leverage Immutable.js for performance and data integrity in Redux

Community and Support

• Redux: Large community, frequent updates, extensive documentation
• Redux-Immutable: Smaller community, less frequent updates, but still actively maintained

Pros of MobX

• Simpler and more intuitive API, requiring less boilerplate code
• Automatic tracking of state changes and re-rendering of components
• Better performance for complex state updates due to fine-grained reactivity

Cons of MobX

• Less predictable state updates, as mutations are allowed
• Steeper learning curve for developers used to immutable state patterns
• Potential for overuse of observables, leading to unnecessary re-renders

Code Comparison

MobX:

import { makeObservable, observable, action } from "mobx";

class Store {
  count = 0;

  constructor() {
    makeObservable(this, {
      count: observable,
      increment: action
    });
  }

  increment() {
    this.count++;
  }
}

Redux-Immutable:

import { createStore } from 'redux';
import { fromJS } from 'immutable';

const initialState = fromJS({ count: 0 });

function reducer(state = initialState, action) {
  switch (action.type) {
    case 'INCREMENT':
      return state.update('count', count => count + 1);
    default:
      return state;
  }
}

const store = createStore(reducer);

Redux-Immutable focuses on maintaining immutable state using Immutable.js, while MobX allows for direct mutations of observable state. MobX's approach is more concise but may lead to less predictable state management in larger applications. Redux-Immutable provides a more structured and predictable state flow, but requires more boilerplate code.

Pros of Immer

• Simpler API with a more intuitive approach to immutability
• Works with any data structure, not limited to Redux state
• Can be used in various contexts beyond Redux

Cons of Immer

• Slightly higher learning curve for developers new to the concept
• May introduce a small performance overhead in some cases

Code Comparison

Redux-immutable:

import { fromJS } from 'immutable';
import { combineReducers } from 'redux-immutable';

const initialState = fromJS({
  todos: []
});

const rootReducer = combineReducers({
  // reducers here
});

Immer:

import produce from 'immer';

const initialState = {
  todos: []
};

const rootReducer = produce((draft, action) => {
  // modify draft directly
});

Summary

Redux-immutable is specifically designed for use with Redux and Immutable.js, providing a way to create an immutable Redux store. It's well-suited for projects already using Immutable.js.

Immer, on the other hand, offers a more flexible approach to immutability that can be used in various contexts, including Redux. It allows developers to write simpler, more intuitive code while still maintaining immutability. Immer's API is generally easier to understand and use, especially for those new to immutable state management.

While Immer may have a slight performance cost in some scenarios, its simplicity and flexibility often outweigh this drawback for many developers and projects.

Pros of Redux Toolkit

• Provides a comprehensive set of tools and utilities for Redux development
• Simplifies common Redux use cases with built-in functions like createSlice
• Includes RTK Query for efficient API calls and data fetching

Cons of Redux Toolkit

• Larger bundle size due to additional features and dependencies
• Steeper learning curve for developers new to Redux concepts

Code Comparison

Redux Toolkit:

import { createSlice } from '@reduxjs/toolkit'

const counterSlice = createSlice({
  name: 'counter',
  initialState: 0,
  reducers: {
    increment: state => state + 1,
  },
})

Redux Immutable:

import { fromJS } from 'immutable'
import { combineReducers } from 'redux-immutable'

const initialState = fromJS({
  counter: 0,
})

const rootReducer = combineReducers({
  counter: (state = initialState.get('counter'), action) => {
    // reducer logic
  },
})

Key Differences

• Redux Toolkit focuses on simplifying Redux development with built-in utilities
• Redux Immutable emphasizes using Immutable.js for state management
• Redux Toolkit has more active development and community support
• Redux Immutable is more lightweight but requires manual implementation of common Redux patterns

Use Cases

• Choose Redux Toolkit for comprehensive Redux development with modern best practices
• Opt for Redux Immutable when working with Immutable.js and needing a minimal Redux setup

Pros of Rematch

• Simplified Redux setup with less boilerplate code
• Built-in support for async actions and effects
• Easier to scale and maintain large applications

Cons of Rematch

• Learning curve for developers familiar with traditional Redux
• Less flexibility in some advanced Redux scenarios
• Potential performance overhead for very small applications

Code Comparison

Redux-immutable:

import { combineReducers } from 'redux-immutable';
import { fromJS } from 'immutable';

const initialState = fromJS({
  counter: 0
});

const rootReducer = combineReducers({
  counter: (state = initialState.get('counter'), action) => {
    switch (action.type) {
      case 'INCREMENT':
        return state + 1;
      default:
        return state;
    }
  }
});

Rematch:

import { init } from '@rematch/core';

const counter = {
  state: 0,
  reducers: {
    increment(state) {
      return state + 1;
    }
  }
};

const store = init({
  models: { counter }
});

Redux-immutable focuses on combining reducers with Immutable.js data structures, while Rematch provides a more concise and intuitive API for defining models and actions. Rematch simplifies the Redux setup process and reduces boilerplate, but may require adapting to a different mental model for state management.