function()

Emitter property creates a Kefir property, but then adds emitter.value and emitter.error methods that calls the property's emitter object.

The end result is a single object that has methods of a stream, property and an attached emitter-like object.

var Kefir = require("can-kefir");

var age = Kefir.emitterProperty();

age.onValue(function(age){
  console.log(age)
});

age.emitter.value(20) //-> logs 20

age.emitter.value(30) //-> logs 30