App crashes on startup when bundled

[MoeDevelops]

What version of Elysia is running?

1.4.28

What version of Node Adapter are you using?

1.4.6

What platform is your computer?

Linux 7.0.10-201.fc44.x86_64

What steps can reproduce the bug?

Bundle the elysia app with the node adapter.
Try to run the bundle output.

I made an example repository with 3 different bundlers: bun, esbuild and rolldown.
https://github.com/MoeDevelops/elysia-node-error

I also made a github action and dockerfiles, to make sure its not just on my machine.
https://github.com/MoeDevelops/elysia-node-error/actions/runs/26818126805

The index.ts:

import node from "@elysia/node";
import Elysia from "elysia";

const PORT = 3000

const app = new Elysia({ adapter: node() }).get("/", () => "Hello, World!")
app.listen(PORT)

console.log(`Listening on http://localhost:${PORT}`)

What is the expected behavior?

Using the example repo

npm run start

> start
> node index.ts

Listening on http://localhost:3000

What do you see instead?

Using the example repo with rolldown, but happens with the other bundlers aswell.

npm run build:rolldown && node build/rolldown.js 

> build:rolldown
> rolldown -c

<DIR>/rolldown.js  chunk │ size: 731.57 kB                                                                                                                                                                            
                                                                                                                                                                                                                      
✔ rolldown v1.0.3 Finished in 81.91 ms                                                                                                                                                                               
[crossws] Using SSE adapter for WebSocket support. This requires a custom WebSocket client (https://crossws.h3.dev/adapters/sse).
file:///home/moe/Development/elysia-node-error/build/rolldown.js:18391
                                const hostname = server.serveOptions.host ?? "localhost";
                                                                     ^

TypeError: Cannot read properties of undefined (reading 'host')
    at file:///home/moe/Development/elysia-node-error/build/rolldown.js:18391:42
    at _Elysia.listen (file:///home/moe/Development/elysia-node-error/build/rolldown.js:16549:70)
    at file:///home/moe/Development/elysia-node-error/build/rolldown.js:18455:74
    at ModuleJob.run (node:internal/modules/esm/module_job:430:25)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:661:26)
    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5)

Node.js v24.14.0

The lines of code in elysia:

let server = serve(serverOptions);
const nodeServer = server.node?.server;
const hostname = server.serveOptions.host ?? "localhost"; // <- Error happens here
const port = server.options.port;

Additional information

No response

Have you try removing the node_modules and bun.lockb and try again yet?

Yes (package-lock.json in this case)