1
import { WebSocketGateway, WebSocketServer } from '@nestjs/websockets';
 2
import { Server } from 'socket.io';
 3
 
 4
@WebSocketGateway()
 5
export class PriceFeedGateway {
 6
  @WebSocketServer()
 7
  server: Server;
 8
 
 9
  sendPriceUpdate(coin: string, price: number) {
10
    this.server.emit('price-update', { coin, price, timestamp: new Date() });
11
  }
12
}