How does import\export work?

Question

Node.js

sockets.js (example taken from here )

import WebSockets from "ws";

const wss = new WebSocket.Server({ port: 8080 });

wss.on('connection', function connection(ws) {
  ws.on('message', function incoming(message) {
    console.log('received: %s', message);
  });

  ws.send('something');
});

export {
    wss
}

index.js
import {wss} from './sockets';
How to explain that the server continues to process requests if it is launched through node sockets, but if node indexit is not launched through ?

Answer 1

https://nodejs.org/dist/latest-v16.x/docs/api/esm....