Notification names and user info keys posted by MGLOfflineStorage, as well as MGLErrorDomain, are instances of string enumerations for ease of use in Swift. Added some shims for projects built with Xcode 7.x. Fixes #6791.
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.