Creating a Chrome extension with React and TypeScript

Browser extensions have evolved from simple widgets to complex applications integrated with websites, with frameworks like React enhancing their development. This text provides a comprehensive guide on building a Chrome extension using React and TypeScript, focusing on creating a SEO validator extension. It covers the process of setting up a React application with Create React App (CRA), configuring the extension through the manifest.json file, and addressing Content Security Policy errors by managing inline JavaScript. The guide also explains how to load the extension into Chrome, design its user interface, and utilize content scripts and message passing to interact with website DOM elements. Additionally, it introduces Craco for customizing CRA's build process to accommodate content scripts, demonstrating the integration of React with the Chrome API for seamless browser interaction.