Deferred Object
Add deferred properties to an object to allow lazy synchronous evaluation of asynchronous properties.
DeferredObject = require 'deferred-object'
obj = new DeferredObject {}
obj.defer 'person', (key, data, callback) ->
process.nextTick () ->
thing = new DeferredObject {}
thing.defer 'name', (key, data, callback) ->
process.nextTick () ->
callback null, 'Richard'
callback null, thing
obj.eval 'this.person.name', () ->
console.log 'result', arguments