Is there a way to wait specific websocket event data?

[agugut-nexgen]

Hello, Is there a way to wait until a websocket connection get specific event data?
I have the following code that start a wss

const webSocket = new WebSocket(connectionUrl)

Then I try to do

 webSocket.onmessage = function (event) {
                    if ((event.data as string).toLowerCase().includes('sometext')) {
                                customerWebSocket.close();
                            return true;
                        }
                    }
                };

But I don't find a way to wait specific event.data
I trying to use https://github.com/lensesio/cypress-websocket-testing but this plugin didn't work
Somebody can help me?

[suppadeliux]

I was thinking about doing the same thing, because my tests depend on the state from my data in websocket event, and not the data of http requests!. Sad that this has not been answered since april 2021!

[cipagauta-david]

The same here, any idea?