Why doesn't localhost open automatically when npm start?

Question

JavaScript

I compiled webpack, when you type npm start, the message "Application not found" appears, but if you manually enter " localhost: 8080 " into the address bar, then everything works

Answer 1

Where do you run npm start from and show the package.json file

Answer 2

The colleague above is right, this is configured in package.json. It has ... a scripts section and there in the script that starts dev (it is called start, apparently) you need to register the --open option