The Package Management extension for Visual Studio Team Services is now generally available. Package Management helps you move to DevOps workflows with continuous integration and delivery. It hosts your NuGet packages so that you can avoid hosting your own private NuGet servers and file shares. Support for npm packages is also included as a public preview.
Package Management is sold per user per month, and is included for Visual Studio Enterprise subscribers (Visual Studio Enterprise with MSDN, Visual Studio Enterprise annual, and Visual Studio Enterprise monthly).