How To Setup Axios Interceptors With React Context Properly

Axios interceptors are a powerful feature that allows you to intercept requests or responses before they are handled by your application. When combined with React Context, you can efficiently manage global behaviors and configurations across your application. In this article, we will guide you through setting up Axios interceptors with React Context properly to enhance your application's performance and maintainability.

Before diving into the implementation, make sure you have Axios installed in your project. You can add it using npm or yarn with the following command:

npm install axios

Create a new file, let's name it `axiosConfig.js`, where you will set up your Axios interceptors and define your Axios instance. In this file, import Axios and define your base URL if needed:

import axios from 'axios';

const axiosInstance = axios.create({
  baseURL: 'https://api.example.com',
});

export default axiosInstance;

Next, we will create a new file, `axiosInterceptors.js`, for defining and setting up your interceptors. In this file, import the Axios instance you previously created and use `useEffect` from React to ensure the interceptors are added only once:

import { useEffect } from 'react';
import axiosInstance from './axiosConfig';

const setupInterceptors = () => {
  useEffect(() => {
    const requestInterceptor = axiosInstance.interceptors.request.use((config) => {
      // Modify request config here
      return config;
    });

    const responseInterceptor = axiosInstance.interceptors.response.use((response) => {
      // Modify response data here
      return response;
    });

    return () => {
      axiosInstance.interceptors.request.eject(requestInterceptor);
      axiosInstance.interceptors.response.eject(responseInterceptor);
    };
  }, []);
};

export default setupInterceptors;

With the interceptors set up, we will integrate them with React Context to make them accessible throughout our application. Start by creating a new file, `AxiosProvider.js`, where you will create a React Context for managing your Axios instance and interceptors:

import React, { createContext } from 'react';
import axiosInstance from './axiosConfig';
import setupInterceptors from './axiosInterceptors';

export const AxiosContext = createContext(null);

const AxiosProvider = ({ children }) => {
  setupInterceptors();

  return (
    
      {children}
    
  );
};

export default AxiosProvider;

In your main `App.js`, you can wrap your application's components with the `AxiosProvider` to ensure the Axios instance and interceptors are available globally:

import React from 'react';
import AxiosProvider from './AxiosProvider';

const App = () => {
  return (
    
      {/* Your application components */}
    
  );
};

export default App;

By following these steps, you have successfully set up Axios interceptors with React Context in your application. This approach allows you to manage global interceptors efficiently and maintain a clean and structured codebase. Feel free to customize the interceptors based on your application's specific requirements to enhance its functionality and performance.