One way to do this is to terminal to your Azure website and try to install the specific npm packages there (npm install whatever
), this way you see whether it's possible in that environment or not.
See the following on instructions to terminal to your Azure website: http://blogs.msdn.com/b/windowsazure/archive/2014/03/04/windows-azure-websites-online-tools-you-should-know-about.aspx.