Make webpack-dev-server to reuse existing opened tab

I am trying to execute two different scripts using nodemon when it starts and when it restarts. The issue is that nodemon calls both start and restart events whenever it detects a change in a file.

So how can I execute two different scripts on start and restart. My purpose of doing so is because whenever nodemon picks up any change in a file, it restarts the webpack-dev-server and a new tab is opened in the browser instead of reusing the existing tab.

package.json

"start": "nodemon --watch app.js",  

nodemon.json

{
   "events": {
        "start": "webpack-dev-server --config=webpack.dev.config.js --open",
        "restart": "webpack-dev-server --config=webpack.dev.config.js"
   }
}

webpack.dev.config.js

.
.
devServer: {
    contentBase: "src",
    compress: true,
    stats: "minimal",
}