Sevo
Composable Server Primitives Across Runtimes

Web-standard server primitives with context-based handlers, middleware, and runtime adapters for Bun, Deno, Node.js, and stream-based hosts.

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export default {
  routes: {
    "/users/:id": (ctx) => {
      return Response.json({ userId: ctx.params.id });
    },
  },
  fetch() {
    return Response.json({ hello: "world!" });
  },
};

/*
Node.js: $ npx sevo
          $ pnpx sevo
          $ yarn dlx sevo
Deno:    $ deno run -A npm:sevo
Bun:     $ bunx --bun sevo
CLI:     $ sevo
*/

Runtime Adapters
Use dedicated adapters for Node.js, Bun, Deno, and stream-based hosts.
Web Standards
Build around standard Request and Response primitives.
Development Experience
Built-in CLI with watch mode, request logging, error handling, static file serving, and graceful shutdown support.

Contributors

Contribute on GitHub