Have you already tried the Microsoft Library Manager?

NuGet has been Visual Studio's main package manager for many years, but as you might have noticed especially in the web development space, client-side libraries are not well-managed with NuGet. This includes many JavaScript and NPM related packages.

To help with this management task inside Visual Studio, Microsoft has developed its own package manager for these client-side libraries, called the Microsoft Library Manager (MLM), which can "install and consume 3rd-party client-side libraries with ease.". It is available on GitHub.

The configuration for Library Manager is optionally stored in a file called "libman.json" inside your project folders. Also, keep in mind that the Library Manager is aimed at managing your client-side (think JavaScript) libraries and files. It is not meant to replace NuGet for backend (think C#) related packages.

Hope this helps!