* [ios, macos] Document requirement about adding sources and layers Sources and layers added outside of mapView:didFinishLoadingStyle: and mapViewDidFinishLoadingMap: are not guaranteed to appear since the map may not be fully loaded and ready to accept new sources and layers. This also fixes a compiler warning in iosapp.
Darwin
The code in the Darwin platform targets Apple platforms but is not specific to iOS or macOS. This code is not distributed as an SDK in itself, but is required by the Mapbox iOS SDK and Mapbox macOS SDK.
These files depend on the Foundation and Core Foundation frameworks but do not depend on iOS- or macOS–specific frameworks, such as UIKit or AppKit. Any non-cross-platform code is guarded by TargetConditionals.h macros.