Angular2从模块导入组件/服务

我正在开发一个Angular2最终应用程序，它目前有两个模块：

• CoreModule：包含共享组件和服务 .

• AppModule：应用程序的根模块

的AppModule：

/**
 * Created by jamdahl on 9/21/16.
 */

// Angular Imports
import {NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {HttpModule} from '@angular/http';
import {FormsModule, ReactiveFormsModule} from '@angular/forms';
import {CoreModule} from '../core-module/core.module';
import {UserService, AuthService, AuthComponent} from '../core-module/core.module';

// Components
import {HomePageComponent} from './components/home-page.component';

//import {enableProdMode} from '@angular/core';
//enableProdMode();

@NgModule({
    imports: [
        BrowserModule,
        HttpModule,
        FormsModule,
        ReactiveFormsModule,
        CoreModule
    ],
    declarations: [
        AuthComponent,
        HomePageComponent
    ],
    providers: [
        AuthService,
        UserService
    ],
    bootstrap: [
        HomePageComponent
    ]
})
export class AppModule {}

CoreModule：

/**
 * Created by jamdahl on 9/21/16.
 */

// Angular imports
import {NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {HttpModule} from '@angular/http';
import {FormsModule, ReactiveFormsModule} from '@angular/forms';

// Class imports
import {User} from './classes/user.class';
import {Alert} from './classes/alert.class';

// Service imports
import {AuthService} from './services/auth.service';
import {UserService} from './services/user.service';

// Component imports
import {AuthComponent} from './components/auth.component';
import {SignInComponent} from './components/signin.component';
import {SignUpComponent} from './components/signup.component';

//import {enableProdMode} from '@angular/core';
//enableProdMode();

@NgModule({
    imports: [
        BrowserModule,
        HttpModule,
        FormsModule,
        ReactiveFormsModule
    ],
    declarations: [
        AuthComponent,
        SignInComponent,
        SignUpComponent
    ],
    providers: [],
    exports: [
        User,
        Alert,
        AuthService,
        UserService,
        AuthComponent
    ]
})
export class CoreModule {}

当我尝试运行它时，我得到以下内容：

错误./src/view/app-module/app.module.ts(11,9）：错误TS2305：模块'“/ Users / jamdahl / Web / Web-Scratch / Angular2-Express-Mongoose / src / view /core-module/core.module“'没有导出的成员'UserService' . 错误在./src/view/app-module/app.module.ts(11,22）：错误TS2305：模块'“/ Users / jamdahl / Web / Web-Scratch / Angular2-Express-Mongoose / src / view / core-module / core.module“'没有导出成员'AuthService' . 错误在./src/view/app-module/app.module.ts(11,35）：错误TS2305：模块'“/ Users / jamdahl / Web / Web-Scratch / Angular2-Express-Mongoose / src / view / core-module / core.module“'没有导出的成员'AuthComponent' .

任何想法为什么这不起作用？我的目标是在模块中定义某些组件/服务，以便在我将创建的其他模块中重用 . 需要找出正确的方法来做到这一点......

感谢您的任何帮助！