angular - 模块 'undefined' 声明的意外值 'AppModule'

Question

这里有什么问题？我试图让它工作，但我在标题中收到该错误。我已经包含了 <router-outlet></router-outlet>在app.component.html那就是templateUrl由 app.component.ts 调用, 仍然没有运气。

app.module.ts:

import { NgModule }             from '@angular/core';
import { BrowserModule }        from '@angular/platform-browser';
import { FormsModule }          from '@angular/forms';
import { RouterModule, Routes } from '@angular/router';


import { AppComponent }  from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { TopnavComponent } from './components/navbars/topnav/topnav.component';
import { LeftnavComponent } from './components/navbars/leftnav/leftnav.component';
import { LeftnavsecondaryComponent } from './components/navbars/leftnav-secondary/leftnav-secondary.component';
import { WorldofwarcraftComponent } from './components/games/worldofwarcraft/worldofwarcraft.component';

@NgModule({
    imports:    [ BrowserModule, FormsModule, AppRoutingModule ],
    declarations:   [ AppComponent, TopnavComponent, LeftnavComponent, LeftnavsecondaryComponent, WorldofwarcraftComponent ],
    bootstrap:  [ AppComponent ]
})

export class AppModule { }

app-routing.module.ts:

import { NgModule }              from '@angular/core';
import { RouterModule, Routes }  from '@angular/router';

import { WorldofwarcraftComponent } from './components/games/worldofwarcraft/worldofwarcraft.component';

const appRoutes: Routes = [
  { path: 'worldofwacraft', component: WorldofwarcraftComponent }
];

@NgModule({
  imports: [ RouterModule.forRoot(appRoutes) ],
  exports: [ RouterModule ]
})

export class AppRoutingModule {}

Answer 1

我遇到了同样的错误，有时会出现这个问题，您只需要使用 ng serve 或您使用的任何 CLI 重新运行服务器，如前所述 here