While Transcrypt supports standard Python syntax for class instance creation and use, the JavaScript syntax for creating new objects must be used when interacting with a small number of Screeps prototypes. In Python, new objects are created by calling the class; in JavaScript, to create an instance of an object, the new keyword must be provided along with a call to the contruct that creates the object.
Transcrypt provides a method, __new__(), that supports creating interacting with constructors in third party libraries. When working with code examples provided by the API, any instance of new Constructor() should be replaced with __new__(Constructor()).