I actually somewhat like the XML configuration of Maven. Smart auto-complete in IntelliJ is fantastic. In many JS tools they use a JSON file for configuration,

I actually somewhat like the XML configuration of Maven. Smart auto-complete in IntelliJ is fantastic. In many JS tools they use a JSON file for configuration, which means one cannot even add comments in the file. And grunt/gulp is worse than Maven, no way you can do anything without writing a custom script with the help of Google.