Nest.js equivalent program for below Node snippet - node.js

Question

Can someone please help and tell me how I can write the following code snippet which is written as a node application to write as a nest application with just WebSockets and gateway class?
var webSocketsServerPort = 8080;
var webSocketServer = require('websocket').server;
var http = require('http');
var server = http.createServer(function(request, response) {
});
server.listen(webSocketsServerPort, function() {
console.log(
new Date() + ' Server is listening on port ' + webSocketsServerPort
);
);
});
var wsServer = new webSocketServer({
httpServer: server
});
wsServer.on('request', function(request) {
var connection = request.accept(null, request.origin);
connection.on('message', function(data) {
var message = JSON.parse(data.utf8Data);
});
connection.on('close', function(connection) {});
EDIT:
In main.ts I wrote this :
app.useWebSocketAdapter(new WsAdapter(app));
This is how my gateway class looks like:
import { WebSocketGateway, WebSocketServer, OnGatewayInit, OnGatewayDisconnect, OnGatewayConnection, SubscribeMessage } from "#nestjs/websockets";
import { Server } from "websocket";
import { Logger } from "#nestjs/common";
#WebSocketGateway(8080)
export class ChatterGateway implements OnGatewayInit, OnGatewayDisconnect, OnGatewayConnection {
#WebSocketServer() private server: server;
private logger: Logger = new Logger('ChatterGateway');
afterInit(server: server) {
this.logger.log('ChatGetway init');
}
handleConnection(client: any, data) {
this.logger.log('Client connected');
}
handleDisconnect(client: any) {
this.logger.log('Client disconnected');
}
#SubscribeMessage('request')
handleRequest(client: any, data) {
this.logger.log(data);
}
#SubscribeMessage('message')
handleMessage(client: any, data) {
this.logger.log(data);
}
}