ReferenceError: WebSocket is not defined

[vitalets]

ReferenceError: WebSocket is not defined

[vitalets]

Hi!
As Node.js does not have built-in WebSocket constructor (unlike browsers), you need to install 3rd-party package websocket:

npm i websocket

Then in you file:

const W3CWebSocket = require('websocket').w3cwebsocket;
const WebSocketAsPromised = require('websocket-as-promised');

const wsp = new WebSocketAsPromised(wsUrl, {
  createWebSocket: url => new W3CWebSocket(url)
});

wsp.open()
  .then(() => wsp.send('foo'))
  .then(() => wsp.close())
  .catch(e => console.error(e));

[jurajkocan]

getting same error when i am trying open connection. Any ideas? thx

const wsc = new WebSocketAsPromised(
    "wss://websocketadress/"            
);
try {
   await wsc.open(); //this will reject promise with error ReferenceError: WebSocket is not defined
   return await wsc.send(data);
} catch (err) {
    console.log("err:", err);
    throw err;
} finally {
    await wsc.close();
}

[jurajkocan]

ok i was using node js and didnt add websocket client to a constructor, i guess its @sameer49 your problem as well

import WebSocketAsPromised from "websocket-as-promised";

 const wsp = new WebSocketAsPromised(
            "websocketadress",
            {
                createWebSocket: (url: any) => {
                    return new WebSocket(url, {
                        rejectUnauthorized: false
                    });
                }
            }
        );
111