sp-loader

Built on familiar standards such
as SystemJS and WebPack,
the loader is the first part of the SharePoint Framework to load on a page. It
manages versioning and loading of client-side components, web parts, and other assets.
It also provides basic diagnostic services.

*This package is part of the SharePoint Framework,
which is a collection of NPM packages that empower developers to create client-side experiences
for Microsoft SharePoint.
For more information, including complete API documentation and code samples, please visit
the SharePoint Framework web site.*