If you want to run the Netsuite Extension local like FeaturedCategory. First on Go to Netsuite and file cabinet SuiteScripts > extensions > NetSuite > FeaturedCategory@1.2.0 choose the extension from the path like here we have chosen FeaturedCategory@1.2.0. Download the file and add it to the workspace you have fetched and run locally so we can get the default Netsuite Extension on our local System