Package Manager Best Practices

Bower

Use Bower for libraries that will be part of your deployed application. This would be things like the angular library, bootstrap and jquery.
These are all installed using the –save flag to make sure that your resources are defined as required for your project.

NPM

Use NPM for libraries that will be running in your development environment. Typescript Types, development tools and the like are things you should be using NPM for.
These are all installed using the –save-dev flag to make sure the NPM file represents your resources accordingly.

NuGet

Use NuGet to pull assembly only references for your dotnet application. This package manager is built into Visual Studio and is part of the build and development experience for dotnet applications.