Angular 8& Laravel echo websockets with socket io:找不到Socket.io客户端

npm install socket.io-client

import * as io from 'socket.io-client';

import { SocketIoModule, SocketIoConfig } from 'ngx-socket-io';

const config: SocketIoConfig = { url: 'http://your-socket-io-server-url', options: {} };

@NgModule({
  imports: [
    // ...
    SocketIoModule.forRoot(config)
  ],
  // ...
})
export class AppModule { }

import { Component, OnInit } from '@angular/core';
import { Socket } from 'ngx-socket-io';

@Component({
  selector: 'app-my-component',
  template: `
    <button (click)="sendMessage()">Send Message</button>
  `
})
export class MyComponent implements OnInit {
  constructor(private socket: Socket) { }

  ngOnInit() {
    this.socket.connect();
    this.socket.on('message', (data) => {
      console.log('Received message:', data);
    });
  }

  sendMessage() {
    this.socket.emit('message', 'Hello, Socket.io!');
  }
}