Manticore's native runtime libraries handle the boilerplate code required to move data into and out of a JavaScript engine.
Additionally, they provide polyfill -- ensuring that the "standard" functions one would expect in a JavaScript engine are actually present. The necessary functionality is built on the native side, then exposed to the JavaScript side by a set of polyfill files.
- C# - Windows and Windows Mobile (Jint and ClearScript engines)
- Java - Android
- Objective-C - iOS and MacOS