How to Solve the CORS Issue in a Create React App Project with a Proxy

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If you’ve ever made a fetch request from a Create React App project to a different domain than the one that served the page, you might have encountered the CORS (Cross-Origin Resource Sharing) issue.

This is a security mechanism implemented by web browsers to prevent web pages from making requests to a different domain than the one that served the page.

When you make a request from your React app to a different domain, the browser may block the request if the server does not explicitly allow CORS.

In this article, we’ll explore how to solve the CORS issue in a Create React App project using a proxy. A proxy is a server that acts as an intermediary between your client and the target server. By using a proxy, you can forward the requests from your client to the target server through the proxy server, which allows you to bypass the CORS issue.

There are two ways to use a proxy in a Create React App project: using a setupProxy.js file or adding a proxy in the package.json file. We'll cover both methods in this article.

Using a setupProxy.js File

The setupProxy.js file is a special file that allows you to configure a proxy in a Create React App project. Here are the steps to use a…