This file is generated automatically by CRA. Extension configurationĪll of the configurations for the extensions belong in the manifest.js file, which is currently living in our public folder. However, we do need to ensure that Chrome can load our application. Converting the React app into a Chrome extensionīecause a Chrome extension is a web application, we don’t need to adjust the application code. Now with our skeleton application up and running, we can transform it into an extension. npx create-react-app chrome-react-seo-extension -template typescript Creating a React application with Create React App (CRA)Ĭreating a React application with TypeScript support is easy using CRA. You can check out the code in this GitHub repo. The first step toward building our extension is to create a React application. Our extension will run a set of pre-defined checks over the current page DOM and reveal any detected issues. This extension analyzes websites to detect common technical issues in the implementation of SEO metadata and the structure of a site. How to use TypeScript throughout the complete solutionīefore we jump into implementation, let’s introduce our Chrome extension: the SEO validator extension.How to create content scripts to interact with websites.In this tutorial, we’ll build a browser extension using Chrome and React. Examples of modules include background scripts, content scripts, an options page, and UI elements. A Chrome extension is a system made of different modules (or components), where each module provides different interaction types with the browser and user. To learn more about browser extensions, let’s look at Google Chrome. Frameworks like React, for example, improve web development and are even used - instead of vanilla JavaScript - for building web extensions. With extensions becoming increasingly complex, developers created solutions that enabled pre-existing tools to scale and adapt. There are now even extensions that are full-blown applications. At first, extensions consisted of small widgets and notification badges, but as technology evolved, extensions became deeply integrated with websites. Over the years, browser extensions have enabled us to customize our web experience. Creating a Chrome extension with React and TypeScript Juan Cruz Martinez Follow I'm an entrepreneur, developer, author, speaker, YouTuber, and doer of things.

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