How add path for listener ?

[zababurinsv]

Hi.
I am created server

....
...
app.use(`${pkg.config.service}`, service); //route

app.options(`/`, await cors(corsOptions))
app.get(`/`, async (req, res) => {
    res.status(404).send(await notFound(pkg.config.service));
})

...
app.listen(port ,() => {
    console.log('pid: ', process.pid)
    console.log('listening on http://localhost:'+ port);
});

It is listen http://localhost:port

I have bundle what in web have path https://site/some-path

I can't create route because my service worker get path from root dir and it is request not go for route

It is worker url.
On github pages it is work and path is true.

    let url = new URL('./WORKER.mjs', import.meta.url)

It's look like this

localhost://port/router/
localhost://port/router/
localhost://port/router/
localhost://port/WORKER.4c3a3c50.js //  !!! it is request for root dir
localhost://port/router/manifest.webmanifest
localhost://port/router/favicon.e8c592b2.ico
localhost://port/router/newkind-icon-144-any.de42f0bc.png

How can i create listener for path ?

Example

app.listen(port , '/some-path', () => {
    console.log('pid: ', process.pid)
    console.log('listening on http://localhost:'+ port);
});

[ungaaaabungaaa]

The URL prefix belongs in the routing/static-file configuration. app.listen(port, ...) starts the server; a string after the port is a host argument, not a URL path.

For example, if dist/WORKER.mjs is part of your built output, mount that directory at the desired prefix:

const express = require('express')
const path = require('node:path')
const app = express()

app.use('/some-path', express.static(path.join(__dirname, 'dist')))
app.listen(3000)

Then the file is served at http://localhost:3000/some-path/WORKER.mjs. Put this mount before any middleware that ends the request. Use the actual built directory and file name.

There is also a separate client-side URL issue. In unbundled modules, new URL('./WORKER.mjs', import.meta.url) resolves relative to the module URL, not the page URL:

• Module at /some-path/main.mjs → /some-path/WORKER.mjs.
• Module at /main.mjs → /WORKER.mjs.
• An emitted URL starting with /WORKER...js targets the origin root regardless of the current page path.

Mounting the Express directory does not rewrite the URLs already emitted by your bundler. Check the loaded module URL and generated worker URL in the browser's network panel. If the build emits the root URL, set the bundler's deployment base/public-path setting to match /some-path/ and rebuild; the exact setting depends on the bundler, which isn't shown in the question. I cannot infer that configuration from this excerpt.

References: Express static mount paths, application API, URL resolution.

Checked on Node 24.18.0 / Express 5.3.0 with a local server: the prefixed worker request returned the file (200), the unmounted root request returned 404, and the three URL-resolution cases above passed. This does not test your bundle, browser worker registration, proxy, or GitHub Pages deployment. Prepared and checked with OpenAI Codex assistance.