What are the best practices for using Axios in a React Native app with TypeScript?

What are the best practices for using Axios in a React Native app with TypeScript?

When using Axios in a React Native app with TypeScript, consider the following best practices: 1. Type your responses: Define interfaces for your API responses to ensure type safety. 2. Create an Axios instance: This allows you to set default configurations like base URL and headers. 3. Error handling: Implement a centralized error handling mechanism to manage API errors effectively. 4. Use interceptors: For request and response transformations, interceptors can help manage authentication tokens and logging. 5. Cancellation tokens: Use cancellation tokens to prevent memory leaks from unmounted components.

Can you give an example of defining an interface for an API response?

Sure! Here's a simple example:

interface User {
  id: number;
  name: string;
  email: string;
}

This interface defines the structure of a User object that you might receive from an API.

How do I create an Axios instance?

You can create an Axios instance like this:

import axios from 'axios';

const api = axios.create({
  baseURL: 'https://api.example.com',
  headers: {'Content-Type': 'application/json'},
});

This instance can then be used throughout your app for making API calls.

What should I do for error handling?

For error handling, you can create a function that handles errors globally. For example:

const handleError = (error: any) => {
  if (axios.isAxiosError(error)) {
    console.error('API Error:', error.response?.data);
  } else {
    console.error('Unexpected Error:', error);
  }
};

You can call this function in your catch blocks.