Value.objectDefinePropertyAccessor

Define or modify a property with @property_name in object referenced by @value. When the property value needs to be getted or set, @getter and @setter callbacks will be called. When the property is cleared in the #JSCClass context, @destroy_notify is called with @user_data as parameter. This is equivalent to JavaScript <function>Object.defineProperty()</function> when used with an accessor descriptor.

Note that the value returned by @getter must be fully transferred. In case of boxed types, you could use %G_TYPE_POINTER instead of the actual boxed #GType to ensure that the instance owned by #JSCClass is used. If you really want to return a new copy of the boxed type, use #JSC_TYPE_VALUE and return a #JSCValue created with jsc_value_new_object() that receives the copy as instance parameter.