sp-page-context
This package defines the page context layer for the SharePoint Framework. The page context allows an application and its web parts to share common data about the current page, such as its contents, URL, list, permissions, navigation menu, etc.
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.