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CRXJS Chrome extension development — true HMR for popup, options, content scripts, side panels, manifest-driven builds, dynamic content script imports…
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 (@crxjs/vite-plugin). Current status Package: @crxjs/vite-plugin (v2.x stable, latest v2.4.0 as of March 2026) Scaffolding: npm create crxjs@latest (always use @latest) 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 # Scaffold new project (picks framework interactively) npm create crxjs@latest
don't have the plugin yet? install it then click "run inline in claude" again.