Angular2：在EventEmitter中传递单个参数

真正的问题是当我记录收到的事件时,我得到2,而不是一个事件/ arg.这是它记录的内容：Event {isTrusted：true}然后是Contact {name：inputName}

如何过滤事件,以便仅在收到Contact对象时才执行操作？

父’创建’组件：

import {Component,OnInit } from 'angular2/core';
import {Contact} from './contact';
import {ContactFormComponent} from './contact-form.component';

@Component({
    selector: 'contact-create',template: `
      <h2>Nuevo contacto</h2>

      <div class="panel panel-default">
        <div class="panel-body">

          <contact-form [contact]="contact" (formSubmitted)="saveContact($event)"></contact-form>

        </div>
      </div>
    `,directives: [ContactFormComponent]
})
export class ContactCreateComponent {

  contact: Contact = new Contact('');

  constructor(
      private router: Router,private contactService: ContactService) { }

  saveContact(args) {
    console.log(args);
  }
}

儿童’形式’组件

import {Component,EventEmitter} from 'angular2/core';
import {NgForm}    from 'angular2/common';
import {Contact}   from './contact';

@Component({
  selector: 'contact-form',inputs: ['contact'],outputs: ['formSubmitted'],templateUrl: 'app/contacts/contact-form.component.html',})
export class ContactFormComponent {

  contact: Contact;
  formSubmitted: EventEmitter<any> = new EventEmitter();

  onSubmit(contact) { this.formSubmitted.next(contact); }
}