I am creating code in react.JS to fatch live data using websocket

    let web_sockets = new WebSockets({
        client_code: "M94633",   
        feed_token: tokenData.feedToken
    });
    console.log(user.clientcode)
    console.log(tokenData.feedToken)
    web_sockets.connect()
        .then(() => {
            console.log("in side websocket connect")
            web_sockets.runScript("mcx_fo|235517", "mw") // SCRIPT: nse_cm|2885, mcx_fo|222900  TASK: mw|sfi|dp crude CRUDEOIL22JULFUT 235517
    
            setTimeout(function () {
                web_sockets.close()
            }, 30000)
        })
    
    web_sockets.on('tick', receiveTick)
    
    
    function receiveTick(data) {
        console.log("receiveTick:::::", data)
    }

but it is giving error:

please help

I am creating code in react.JS to fatch live data using websocket

    let web_sockets = new WebSockets({
        client_code: "M94633",   
        feed_token: tokenData.feedToken
    });
    console.log(user.clientcode)
    console.log(tokenData.feedToken)
    web_sockets.connect()
        .then(() => {
            console.log("in side websocket connect")
            web_sockets.runScript("mcx_fo|235517", "mw") // SCRIPT: nse_cm|2885, mcx_fo|222900  TASK: mw|sfi|dp crude CRUDEOIL22JULFUT 235517
    
            setTimeout(function () {
                web_sockets.close()
            }, 30000)
        })
    
    web_sockets.on('tick', receiveTick)
    
    
    function receiveTick(data) {
        console.log("receiveTick:::::", data)
    }

but it is giving error:

please help