Pros of Redux

• Widely adopted and battle-tested in large-scale applications
• Extensive ecosystem with many middleware and developer tools
• Predictable state management with a single source of truth

Cons of Redux

• Steep learning curve and complex boilerplate code
• Verbose syntax for defining actions and reducers
• Can be overkill for smaller applications

Code Comparison

Redux:

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

Rematch:

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

Rematch simplifies the Redux pattern by reducing boilerplate and providing a more intuitive API. It offers automatic action creation and simplified reducer definitions, making it easier to manage state in React applications. However, Redux's extensive ecosystem and widespread adoption make it a more versatile choice for complex projects with specific requirements.

Both libraries aim to solve state management challenges in React applications, but Rematch focuses on simplicity and ease of use, while Redux provides a more robust and flexible foundation for large-scale applications.

Pros of MobX

• Simpler API with less boilerplate code
• Automatic tracking of observable state changes
• More flexible, allowing fine-grained control over reactivity

Cons of MobX

• Steeper learning curve for developers new to reactive programming
• Less predictable behavior due to automatic reactivity
• Potential performance issues with large, complex state trees

Code Comparison

MobX:

import { makeAutoObservable } from "mobx";

class TodoStore {
  todos = [];
  constructor() {
    makeAutoObservable(this);
  }
  addTodo(text) {
    this.todos.push({ text, completed: false });
  }
}

Rematch:

const todos = {
  state: [],
  reducers: {
    addTodo(state, payload) {
      return [...state, { text: payload, completed: false }];
    },
  },
};

export const store = init({
  models: { todos },
});

MobX uses a more object-oriented approach with automatic reactivity, while Rematch follows a more traditional Redux-like pattern with explicit actions and reducers. MobX's code is often more concise, but Rematch's structure may be more familiar to developers with Redux experience.

Both libraries aim to simplify state management, but they take different approaches. MobX focuses on reactivity and minimal boilerplate, while Rematch provides a structured, Redux-like experience with less complexity than vanilla Redux.

Pros of Jotai

• Lightweight and minimalistic approach to state management
• Supports TypeScript out of the box with excellent type inference
• Easier to use with React's concurrent features and Suspense

Cons of Jotai

• Less suitable for complex, large-scale applications compared to Rematch
• Lacks built-in middleware support and plugins ecosystem
• May require additional libraries for advanced features like persistence

Code Comparison

Jotai:

import { atom, useAtom } from 'jotai'

const countAtom = atom(0)
function Counter() {
  const [count, setCount] = useAtom(countAtom)
  return <button onClick={() => setCount(c => c + 1)}>{count}</button>
}

Rematch:

import { init } from '@rematch/core'

const store = init({
  models: {
    count: {
      state: 0,
      reducers: {
        increment(state) { return state + 1 }
      }
    }
  }
})

function Counter() {
  const count = useSelector(state => state.count)
  const { increment } = useDispatch(store.dispatch.count)
  return <button onClick={increment}>{count}</button>
}

Pros of Effector

• Lightweight and fast, with a smaller bundle size
• More flexible and composable API
• Better TypeScript support out of the box

Cons of Effector

• Steeper learning curve due to unique concepts
• Smaller community and ecosystem compared to Rematch
• Less integration with existing Redux tooling

Code Comparison

Effector:

import { createStore, createEvent } from 'effector'

const increment = createEvent()
const $counter = createStore(0)
  .on(increment, state => state + 1)

$counter.watch(console.log)
increment()

Rematch:

import { init } from '@rematch/core'

const counter = {
  state: 0,
  reducers: {
    increment: state => state + 1
  }
}

const store = init({ models: { counter } })
store.dispatch.counter.increment()

Both libraries aim to simplify state management, but Effector takes a more functional approach with its event-based system, while Rematch builds on top of Redux with a more familiar model-based structure. Effector's API is more concise and flexible, but Rematch may be easier to adopt for developers already familiar with Redux patterns.