CRXJS CRXJS is a Chrome extension development tool that provides true HMR for popup, options, content scripts, and side panels. It reads your manifest to auto-generate the extension output, handles content script injection, and manages the service worker build. Under the hood it is a Vite plugin ( ). Current status - Package : (v2.x stable, latest v2.4.0 as of March 2026) - Scaffolding : (always use ) - Maintained by : @Toumash and @FliPPeDround (since mid-2025) - GitHub : github.com/crxjs/chrome-extension-tools ( 4k stars) - Vite compatibility : v3 through v8-beta Quick start Vite config by…