How does the Provider component make the Redux store available to all components?

The Provider component in Redux, provided by the react-redux library, is responsible for making the Redux store available to all components in a React application. It does so by leveraging React's Context API to propagate the Redux store down the component tree.

Prerequisites:

• React
• Node & NPM
• Redux

Steps to Create React Application And Installing Module:

Step 1: Create a React application using the following command:

npx create-react-app foldername

Step 2: After creating your project folder i.e. foldername, move to it using the following command:

cd foldername

Step 3: Installing Redux toolkit:

npm i @reduxjs/toolkit

Step 4: After setting up react environment on your system, we can start by creating an App.jsx file and create a file by the name of components in which we will write our desired function.

Project Structure:

👁 Screenshot-2024-02-08-015918

The updated dependencies in package.json file will look like:

"dependencies": {
 "@reduxjs/toolkit": "^2.1.0",
 "react": "^18.2.0",
 "react-dom": "^18.2.0",
 "react-redux": "^9.1.0",
 "redux": "^5.0.1"
}

Approach:

Follow the below steps to make the Redux store available to all components how using Provider component:

• Setup Redux Store
• Using the Provider Component from react-redux
• Accessing the Redux Store in Components

• In the index.js file:
  • We import the Provider component from react-redux and the Redux store from the store.js file.
  • We wrap the root component (<App />) with the Provider component.
  • We pass the Redux store as a prop to the Provider component. This makes the store available to all components within the component tree.
• In the App.js file:
  • We define the App component, which displays the current count value from the Redux store and provides buttons to increment and decrement the count.
  • We use the connect() function from react-redux to connect the App component to the Redux store.
  • We define mapStateToProps to map the Redux state to props, and mapDispatchToProps to map dispatch actions to props.
  • The connected App component receives the count prop from the Redux store and increment and decrement functions to dispatch actions.

Example: Below is the basic implementation of the above steps:

Output: