In a blog post by Peter Holmberg, the process of creating Grafana plugins using ReactJS is explored, particularly following Grafana's transition from AngularJS to React starting with version 6.0. This transition is facilitated by the introduction of the @grafana/ui npm package, which, despite being in its Alpha stage and subject to breaking changes, aims to simplify the development of React plugins. The setup involves configuring Grafana to recognize plugins by modifying the custom.ini file to specify the plugins' directory, and structuring the plugins with essential files like plugin.json and module.tsx. The article provides an example of building an RSS panel using React and TypeScript, which involves creating a ReactPanelPlugin class, setting up a panel class with life cycle methods, and employing the rss-to-json library to handle RSS feeds. Editors are used to manage plugin options, and the use of TypeScript types is encouraged to minimize bugs. The build process involves using webpack to convert TypeScript to JavaScript, ensuring compatibility with Grafana's expectations.