#Features

#Runtime Agnostic

Powered by srvx — write once and run on Node.js, Deno, Bun, and Cloudflare Workers. Set the runtime option to target your platform and the build output and module resolution conditions adapt automatically. Default is node.

#Framework Agnostic

Servers are defined using standard Request and Response — no framework-specific APIs. The defineServer function provides a type-safe way to configure a fetch handler, making your server code portable across frameworks and runtimes.

Node.js frameworks are also supported: use toFetchHandler from the node entry point to bridge from Node.js HTTP handlers to Web API handlers.

#Vite & Rsbuild Plugins

Drop-in plugins for Vite and Rsbuild — add the plugin to your config and start building. No extra tooling or setup required. Both plugins share the same core options and follow the same conventions, so switching between Vite and Rsbuild requires minimal configuration changes.

#HTTPS & Middleware

Built-in HTTPS support for development and production. Provide cert and key paths through the https option in both dev and build configuration. Middleware chain is available out of the box via the middleware option in defineServer — compose request processing into reusable layers.

#Live Dev Server

Hot-reloading dev server that updates on file changes without restarting. The fetch, error, and middleware handlers are swapped in place, preserving connections and state. Dev server host, port, and HTTPS are configurable through the dev option.

#Flexible Build Targets

Build as a standalone server or a serverless handler, with external or bundled dependencies:

#Target

• Server — produces a self-starting server. The output runs directly with no additional integration needed.
• Handler — produces an exported handler for serverless platforms like Vercel.

#Bundle

• External — keeps all dependencies as imports. The output does not bundle any dependencies.
• Standalone — bundles all dependencies inline. Only Node.js builtins remain external. This produces a self-contained output with no external requirements.

Configurable via the build.target and build.bundle options.