ClassEnumeratePropertiesFunction

typealias ClassEnumeratePropertiesFunction = (jscClass: Class, context: Context, <Error class: unknown class>?) -> List<String>?

The type of enumerate_properties in #JSCClassVTable. This is only required when you need to handle external properties not added to the prototype.

param jscClass a #JSCClass
param context a #JSCContext
param instance the @jsc_class instance
return a null-terminated array of strings containing the property names, or null if @instance doesn't have enumerable properties.