Ember.computed.alias()

Creates a new property that is an alias for another property on an object. Calls to get or set this property behave as though they were called on the original property.

let Person = Ember.Object.extend({
  name: 'Alex Matchneer',
  nomen: Ember.computed.alias('name')
});

let alex = Person.create();

alex.get('nomen'); // 'Alex Matchneer'
alex.get('name');  // 'Alex Matchneer'

alex.set('nomen', '@machty');
alex.get('name');  // '@machty'