I'm trying to emit a message server side in Node.JS using Socket.io.

The socket.io connection is made in the app.js script.

The message is emitted in server.js script.

However I keep getting the error 'TypeError: io.emit is not a function'.

What could be the problem?

Thanks in advance!

app.js:

const app = require('./server'); // Fetch APIs
const socket = require("socket.io");

const port = 6000; // Processing Port

// Port session listener
const server = app.listen(port, () => {
    console.log(`App started on port ${port} ...!`)
})

// Socket setup
const io = socket(server);

// Export socket
module.exports={io};

server.js:

const { io } = require('socket.io-client');

....
....
....

io.emit('processing-progress',`App has started ..!`);