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.

import Kefir from "can-kefir";

const age = Kefir.emitterProperty();

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

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

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