These projections contains a subset of APIs as part of the UWP platform. The list of full namespaces is available here for reference: https://learn.microsoft.com/en-us/uwp/api/

SDK Version

Currently, these APIs are targeted towards the 10.0.18362.0 SDK of Windows, as this is the minimum version that the Windows App SDK supports.

Project Configuration

The bindings are generated from WinMD files, found in NuGet packages on Nuget.org. There are two key files which drive this:

projections.json - this specifies the project/packages and which apis to include in the projection
generate-bindings.ps1 - this file reads projections.json and generates the appropriate bindings.

Known Issues and Limitations

The developer experience for consuming WinRT APIs from Swift is a work in progress. Due to current limitations, not all APIs can be generated as this causes export limit issues.
The APIs listed in projections.json are required for the other swift-* projects to build. Modify a projections.json in any one of those projects could require an update here.