Angular2 RC6升级

Question

更新我的项目后RC6发生以下错误:

Error: Typescript found the following errors:
  app.component.ts (12, 3): Argument of type '{ moduleId: string; selector: string; templateUrl: string; styleUrls: string[]; directives: (type...' is not assignable to parameter of type 'ComponentMetadataType'.
  Object literal may only specify known properties, and 'directives' does not exist in type 'ComponentMetadataType'.

app.component.ts

import {Component, OnInit} from '@angular/core';
import {NavbarComponent} from "./shared/navbar/navbar.component";
import {ROUTER_DIRECTIVES} from "@angular/router";
import {SidebarComponent} from "./shared/sidebar/sidebar.component";
import {FooterComponent} from "./shared/footer/footer.component";

@Component({
  moduleId: module.id,
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.css'],
  directives: [NavbarComponent, SidebarComponent, FooterComponent, ROUTER_DIRECTIVES]
})
export class AppComponent implements OnInit {

  ngOnInit(): any {
    return undefined;
  }

}

我需要一段时间,但我无法弄明白.

Answer 1

Directives如果我正确阅读,pipes必须定义@NgModule.内部支持@Component被删除.

所以,只需将您的指令移动到NgModule中

目前你有:组件A带有指令Ac,组件B带有指令Bc,很可能是一个AppModule,你只需要将Ac和Bc移动到AppModule中.是的,你必须从@Component声明中删除它们

然后,指令将立即在模块中定义的组件中可用.

OP的示例变为:

app.component.ts

// imports...
@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
})
export class AppComponent {}

app.module.ts

// imports...
@NgModule({
  declarations: [
    AppComponent,
    NavbarComponent, 
    SidebarComponent, 
    FooterComponent
  ],
  imports: [
    BrowserModule,
    CommonModule,
    FormsModule
  ],
  providers: [
               //MyService, MyOtherService
             ],
  entryComponents: [AppComponent],
  bootstrap: [AppComponent]
})
export class AppModule {}

请参阅doc for router:router文档

Answer 2

directives并且pipes必须在@NgModuleRC6 之后的声明中定义.从@Component装饰器中删除它们.