Running svelte dev on server

I am running svelte like this on my server:

$ npm run dev  Your application is ready~! 🚀  - Local:      http://localhost:5000────────────────── LOGS ──────────────────

Which is great. However, when I try to access through my public ip, the bundle is not found. I.E. When I type <publicIP>:5000 into the browser. It doesn't show up. The port is open and accessible. Is there any way to achieve this?

The request just fails. But shouldn't it work if it's running on localhost:5000? I have set up a node server and I can indeed access it on port 5000, but it doesn't serve the files properly like npm run dev does.