Lately I created a ASP.NET MVC Core project from scratch using Visual Studio 2017 (15.6.3). I discovered the usual JavaScript frameworks:
We found bower to be tricky to get setup, npm is well supported and packages can be installed using the Package Installer from Mads Kristensen, this also works well with the Bundler & Minifier extension, from the same developer for copying the relevant files from the node_modules folder to where you want them.
https://github.com/madskristensen/BundlerMinifier
https://marketplace.visualstudio.com/items?itemName=MadsKristensen.PackageInstaller