| Array | This is a magic class the compiler uses as a base class for injected array classes. | code | html |
| Array.ExpandoWrapper | code | html | |
| Cast | This is a magic class the compiler uses to perform any cast operations that require code. | code | html |
| ClassLiteralHolder | This is a magic class the compiler uses to contain synthetic fields for all class literals. | code | html |
| EntryMethodHolder | This class holds the boot strap entry method that the compiler generates. | code | html |
| Exceptions | This is a magic class the compiler uses to throw and check exceptions. | code | html |
| LongLib | Implements a Java long in a way that can be translated to
JavaScript. |
code | html |
| LongLib.CachedInts | Use nested class to avoid clinit on outer. | code | html |
| LongLib.Const | code | html | |
| Stats | Provides access to the statistics collector function as an intrinsic for use by the compiler. | code | html |
| Util | This class is used to access the private, GWT-specific typeId and typeMarker fields. | code | html |