SHELL

npm install redux and react-redux

npm install redux react-redux --save

react redux npm

npm i react-redux

npm i react redux

npm install redux react-redux @reduxjs/toolkit

install redux npm

# NPM
npm install redux

# Yarn
yarn add redux

install react redux

################# Installation ###################
### Redux Toolkit ###
npm install @reduxjs/toolkit

### Redux Core ###
npm install redux

### Complementary Packages ###
npm install react-redux
npm install --save-dev @redux-devtools/core

### Create a React Redux App ###
# Redux + Plain JS template
npx create-react-app my-app --template redux
# Redux + TypeScript template
npx create-react-app my-app --template redux-typescript

install redux

npm i redux react-redux
aka

install redux

Copynpm install redux

react redux install

npx create-react-app <name> --template redux // without typescript
npx create-react-app <name> --template redux typescript // with typescript

npm redux

import { createStore } from 'redux'

/**
 * This is a reducer, a pure function with (state, action) => state signature.
 * It describes how an action transforms the state into the next state.
 *
 * The shape of the state is up to you: it can be a primitive, an array, an object,
 * or even an Immutable.js data structure. The only important part is that you should
 * not mutate the state object, but return a new object if the state changes.
 *
 * In this example, we use a `switch` statement and strings, but you can use a helper that
 * follows a different convention (such as function maps) if it makes sense for your
 * project.
 */
function counter(state = 0, action) {
  switch (action.type) {
    case 'INCREMENT':
      return state + 1
    case 'DECREMENT':
      return state - 1
    default:
      return state
  }
}

// Create a Redux store holding the state of your app.
// Its API is { subscribe, dispatch, getState }.
let store = createStore(counter)

// You can use subscribe() to update the UI in response to state changes.
// Normally you'd use a view binding library (e.g. React Redux) rather than subscribe() directly.
// However it can also be handy to persist the current state in the localStorage.

store.subscribe(() => console.log(store.getState()))

// The only way to mutate the internal state is to dispatch an action.
// The actions can be serialized, logged or stored and later replayed.
store.dispatch({ type: 'INCREMENT' })
// 1
store.dispatch({ type: 'INCREMENT' })
// 2
store.dispatch({ type: 'DECREMENT' })
// 1