Addfox Browser Extension Build Tool

Addfox is a modern build tool and framework specifically designed for developing browser extensions across multiple platforms. It is built on top of Rsbuild, leveraging its performance for fast development cycles, including hot module replacement (HMR) and automatic browser launching for an efficient developer experience. The current stable version is 0.1.1-beta.15, indicating an active development phase with frequent beta releases. Key differentiators include its framework-agnostic support for popular UI libraries like React, Vue, Svelte, and Solid, and its ability to target various Chromium-based browsers (Chrome, Edge, Brave, etc.) as well as Firefox. Addfox simplifies project setup with file-based entry discovery and offers advanced features such as AI-friendly error output, Rstest integration for unit and end-to-end testing, and Rsdoctor for bundle analysis. It also streamlines deployment by automatically generating store-ready zip files. The tool requires Node.js version 20 or higher, ensuring access to modern JavaScript features and performance improvements.