Vite

Pin host and port from the lease. Vite’s default host is localhost, which on Windows is often [::1] only while the claim is 127.0.0.1. Same port, two sockets.

import { localberthListen } from 'localberth/port';

const listen = localberthListen('foo', 5173);

export default defineConfig({
	server: { host: listen.host, port: listen.port, strictPort: true }
});

localberthPort(name, fallback) still returns just the number.

If the name is missing and you pass a fallback, you get 127.0.0.1 and that port. If there is no fallback, it throws.

For a phone tile, start Vite with --host (or server.host: true) so the process listens past loopback.