How to configure Webpack to work with WebSocket?

Question

React

I have a React project. We want to implement WebSocket there so that changes from the backend are pulled up without reloading the page.
My task is to set up webpack so that it connects, for example, here https://www.websocket.org/echo.html. Actually the question is how to do it?
In the webpack config, the piece with devServer looks like this:

devServer: {
        contentBase: path.resolve(__dirname, `./${folder}`),
        compress: true,
        port: 9000,
        host: '0.0.0.0',
        open: false,
        historyApiFallback: true,
        proxy: [{
            context: ['/api', '/dash'],
            target: 'url_нашего_сервера',
            changeOrigin: true,
            secure: true
        }]
    },

Answer 1

Sample solution:

devServer: {
    contentBase: path.resolve(__dirname, `./${folder}`),
    compress: true,
    port: 9000,
    host: '0.0.0.0',
    open: false,
    historyApiFallback: true,
    proxy: [
        {
            context: ['/api', '/dash'],
            target: 'https://${systemUrl}/',
            changeOrigin: true,
            secure: true
        },
        {
            context: ['/websocket'],
            target: `wss://${systemUrl}/websocket/`,
            changeOrigin: true,
            ws: true
        }
    ]
},