vite-dev-rpc facilitates seamless communication between your Vite development server and browser extensions or other external applications. It establishes a Remote Procedure Call (RPC) interface over WebSockets, enabling real-time data exchange and functionality control during development. This library simplifies tasks like triggering rebuilds, modifying application state, or retrieving debug information directly from your running Vite application, streamlining the development workflow and enhancing debugging capabilities for complex projects.