Angular 6 - browser-crypto.js :3 Uncaught ReferenceError: global is not defined

Question

我正在实现 socketjs。但是我遇到了以下错误。

下面是我正在使用的 socket 和 stomp 包。

import * as SockJS from 'sockjs-client';
import * as Stomp from 'stompjs/lib/stomp.js';

提前致谢。

这是我的 Angular 代码-

import * as Socket from 'socket.io-client';
import * as Stomp from 'stompjs/lib/stomp.js';

initializeWebSocketConnection2(){

let ws = new Socket(this.serverUrl);

this.stompClient = Stomp.over(ws);
let that = this;
this.stompClient.connect({}, function(frame) {


   that.stompClient.subscribe("/test", function(message){ 
        if(message.body) {
          console.log(message.body);
         window.location.reload(); 
        }
 });


   that.stompClient.subscribe("/operation", function(message){ 
        if(message.body) {
          console.log(message.body);
          window.location.reload();

        }
 });

});

Answer 1

将它添加到你的 polyfills.ts 中

(window as any).global = window

首先你需要通过输入安装socket-client

npm install --save @types/socket.io

然后你可以像这样在你的组件或服务中导入 socket.io-client

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

像这样改变你的代码

let ws = Socket(this.serverUrl);