Why I see the source code of my React app in the production build and how to hide it?

Introduction

As a backend developer, it's a given that my code is not visible inside the browser.

However, I was shocked when I saw the source code of my React app in the production build via the dev tools in the console.

Reason:

By default, a React app generates source map files in the production build which help in debugging.

You will not find the source code inside the /build folder.

Solution:

Add below line in your package.json file

"scripts": {
+  "build": "GENERATE_SOURCEMAP=false react-scripts build"
}

This will hide your source code in the production build.