Importazione anuglar2/forme che causano "Impossibile leggere proprietà 'annotazioni' di indefinito"

Question

Sto cercando di creare la forma semplice come descritto nella http://angularjs.blogspot.no/2015/03/forms-in-angular-2.html, ma quando aggiungo

import {forms, required} from 'angular2/forms';

in incidenti con

TypeError: Cannot read property 'annotations' of undefined 

TypeError: Cannot read property 'annotations' of undefined 
    at ReflectionCapabilities.System.register.execute.$__export.annotations (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/reflection/reflection_capabilities.es6!eval:81:40) 
    at Reflector.System.register.execute.$__export.annotations (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/reflection/reflector.es6!eval:81:50) 
    at DirectiveMetadataReader.System.register.execute.$__export.read (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/directive_metadata_reader.es6!eval:31:41) 
    at eval (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:127:35) 
    at Array.map (native) 
    at Function.System.register.execute.$__export.map (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/facade/collection.es6!eval:172:26) 
    at Compiler.System.register.execute.$__export.createSteps (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:126:43) 
    at Compiler.System.register.execute.$__export._compileTemplate (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:164:53) 
    at eval (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:154:29) 
    at Zone.run (http://localhost:9090/node_modules/zone.js/zone.js:87:19) 

-----async gap----- 
Error 
    at Function.System.register.execute.$__export.then (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/facade/async.es6!eval:35:28) 
    at Compiler.System.register.execute.$__export._compile (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:153:42) 
    at Compiler.System.register.execute.$__export.compile (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/compiler/compiler.es6!eval:134:34) 
    at eval (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:73:23) 
    at Function.System.register.execute.$__export.apply (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/facade/lang.es6!eval:317:23) 

-----async gap----- 
Error 
    at _AsyncInjectorStrategy.System.register.execute._AsyncInjectorStrategy.instantiate (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/di/injector.es6!eval:297:17) 
    at Injector.System.register.execute.$__export._getByKey (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/di/injector.es6!eval:138:33) 
    at Injector.System.register.execute.$__export.asyncGet (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/di/injector.es6!eval:112:25) 
    at eval (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:113:39) 

-----async gap----- 
Error 
    at VmTurnZone.System.register.execute.$__export._createInnerZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/zone/vm_turn_zone.es6!eval:61:45) 
    at new VmTurnZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/zone/vm_turn_zone.es6!eval:29:34) 
    at _createVmZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:101:16) 
    at bootstrap (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:110:16) 
    at y.main (http://localhost:9090/app.js!eval:10:12) 
    at http://localhost:9090/?:42:21 

-----async gap----- 
Error 
    at VmTurnZone.System.register.execute.$__export._createInnerZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/zone/vm_turn_zone.es6!eval:61:25) 
    at new VmTurnZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/zone/vm_turn_zone.es6!eval:29:34) 
    at _createVmZone (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:101:16) 
    at bootstrap (http://localhost:9090/node_modules/angular/dist/js/prod/es6/angular2/src/core/application.es6!eval:110:16) 
    at y.main (http://localhost:9090/app.js!eval:10:12) 
    at http://localhost:9090/?:42:21 

Impossibile capire che cosa significhi questo messaggio di errore e inoltre non riesco a trovare dove è definita la direttiva di moduli.

AGGIORNAMENTO: il "non definito" è in realtà una direttiva "moduli" che sembra mancare davvero in angular2/modules/angular2/src/forms. Quindi DirectiveMetadataReader passa il "non definito" oltre al riflettore che alla fine risulta in un'eccezione. Sarebbe bello avere un assegno in Template.

Answer 1

Sembra che l'esempio del blog di Victor non corrisponda alla versione utilizzata (le API stavano cambiando così velocemente quei giorni). Ma ora beta viene rilasciato (e significa cambiamenti non più di rottura), così ho creato esempio lavorare con il più vicino possibile funzionalità:

angolare 2 Beta

import {Component} from 'angular2/core' 
import {ControlGroup, FormBuilder, Validators} from 'angular2/common' 
... 

http://plnkr.co/edit/ae1WEgQJWPMdEgoweMGd?p=preview solo per verificare come è andato lontano (abbastanza lontano!).

A partire dalla versione angolare: 2.0.0-rc.1

Tutte le importazioni che utilizzavano angular2 bisogno di essere cambiato in @angular

import {Component} from '@angular/core' 
import {ControlGroup, FormBuilder, Validators} from '@angular/common'; 

Per ulteriori Lista delle importazioni vedere qui: -

• List of all imports updated to angular2 RC.