Java Script Module
interface JavaScriptModule
Interface denoting that a class is the interface to a module with the same name in JS. Calling functions on this interface will result in corresponding methods in JS being called.
When extending JavaScriptModule and registering it with a CatalystInstance, all public methods are assumed to be implemented on a JS module with the same name as this class. Calling methods on the object returned from ReactContext.getJSModule or CatalystInstance.getJSModule will result in the methods with those names exported by that module being called in JS.
NB: JavaScriptModule does not allow method name overloading because JS does not allow method name overloading.