This extension is a tool that provides you a list of scripts from your project's package.json. You can then click on a script to execute it automaticaly in a new terminal.
Once you have installed ClickScript and opened a project, you will see a new icon in the activity bar. When you click on this icon, it displays a new sidebar with the list of scripts that come from your package.json. You can click on one of them to execute the script of your choice.
If you want to contribute to this project, read this guide.