我使用angular2，带有firebase和typescript。

原因很慢，因为我有很多路线，我注入了大量的文件？

此外，我的应用程序工作正常，只是第一次访问主页的用户有这个问题。

我不知道是否可以在底部改进引导，或者我做错了什么。

这是我的app.ts文件：

import {Component,bind,provide,Injectable} from 'angular2/core';
import {bootstrap} from 'angular2/platform/browser'
import {NgIf} from 'angular2/common';
import {Router,Location,ROUTER_BINDINGS,RouterOutlet,RouteConfig,RouterLink,ROUTER_PROVIDERS,APP_BASE_HREF,CanActivate,OnActivate,ComponentInstruction} from 'angular2/router';
import {HTTP_PROVIDERS,Http,Headers} from 'angular2/http';
import {ANGULAR2_GOOGLE_MAPS_PROVIDERS} from 'angular2-google-maps/core';
import {enableProdMode} from 'angular2/core';
enableProdMode();

import {LoggedInRouterOutlet} from './interceptor';

import {AuthService} from './services/authService/authService';
import {SocialService} from './services/socialService/socialService';
import {UserService} from './services/userService/userService';
import {OrganisationService} from './services/organisationService/organisationService';
import {NotificationService} from './services/notificationService/notificationService';
import {EmailService} from './services/emailService/emailService';

import {UserProfile} from './models/profile/profile';
import {Organisation} from './models/organisation/organisation';

import {HeaderNavigation} from './components/header/header';
import {HeaderNavigationLoggedIn} from './components/header/headerNavigationLoggedIn';
import {HeaderNavigationLoggedInCompany} from './components/header/headerNavigationLoggedInCompany';
import {Footer} from './components/footer/footer';
import {SideMenuCompany} from './components/header/sideMenuCompany';
import {SideMenuUser} from './components/header/sideMenuUser';
import {Splash} from './components/splash/splash';

import {CreateJob} from './components/createJob/createJob';
import {SearchJobs} from './components/searchJobs/searchJobs';
import {Login} from './components/login/login';
import {Applications} from './components/applications/applications';
import {Register} from './components/register/register';
import {ForgotPassword} from './components/forgotpassword/forgotpassword';
import {ChangePassword} from './components/changepassword/changepassword';
import {ChangeEmail} from './components/changeemail/changeemail';
import {SocialRegister} from './components/socialregister/socialregister';
import {Admin} from './components/admin/admin';
import {Contact} from './components/contact/contact';
import {SearchUsers} from './components/searchusers/searchusers';

import {Jobs} from './components/job/jobs';
import {CompanyProfile} from './components/company/company';
import {Home} from './components/home/home';
import {Dashboard} from './components/dashboard/dashboard';
import {Profile} from './components/profile/profile';
import {UserApplications} from './components/userApplications/userApplications';

@Component({
    selector: 'app',providers: [UserService,UserProfile,OrganisationService,Organisation],template: `

        <Splash *ngIf="isLoggedIn"></Splash>    

        <HeaderNavigation *ngIf="!isLoggedIn"></HeaderNavigation>       

        <HeaderNavigationLoggedIn *ngIf="isLoggedIn && isUserLogin"></HeaderNavigationLoggedIn>
        <HeaderNavigationLoggedInCompany *ngIf="isLoggedIn && isCompanyLogin"></HeaderNavigationLoggedInCompany>

        <SideMenuCompany *ngIf="isLoggedIn && isCompanyLogin"></SideMenuCompany>
        <SideMenuUser *ngIf="isLoggedIn && isUserLogin"></SideMenuUser>

        <div class="content">
            <router-outlet></router-outlet> 
        </div>     
    `,directives: [RouterOutlet,Splash,HeaderNavigation,HeaderNavigationLoggedIn,NgIf,HeaderNavigationLoggedInCompany,SideMenuCompany,SideMenuUser,Footer,LoggedInRouterOutlet]
})

@RouteConfig([
    { path: '/',component: Home,as: 'Home',data:{title: 'Welcome Home'}},{ path: '/home',useAsDefault: true},{ path: '/login',component: Login,as: 'Login' },{ path: '/register/:id',component: Register,as: 'Register' },{ path: '/forgotpassword',component: ForgotPassword,as: 'ForgotPassword' },{ path: '/dashboard',component: Dashboard,as: 'Dashboard' },{ path: '/search',component: SearchJobs,as: 'Search' },{ path: '/profile',component: Profile,as: 'Profile' },{ path: '/settings',component: CompanyProfile,as: 'Settings' },{ path: '/jobs',component: Jobs,as: 'Jobs' },{ path: '/password',component: ChangePassword,as: 'Password' },{ path: '/email',component: ChangeEmail,as: 'Email' },{ path: '/applications',component: Applications,as: 'Applications' },{ path: '/socialRegister/:id',component: SocialRegister,as: 'SocialRegister' },{ path: '/socialRegister',{ path: '/applys',component: UserApplications,as: 'Applys' },{ path: '/contact',component: Contact,as: 'Contact' },{ path: '/searchTeachers',component: SearchUsers,as: 'SearchUsers' },{ path: '/createJob',component: CreateJob,as: 'CreateJob' },{ path: '/adminmarkchris2016',component: Admin,as: 'AdminMarkChris2016' },{ path:'/**',redirectTo: ['Home']}
])

@Injectable()

export class AppComponent {
    router: Router;
    location: Location;
    authService: AuthService;
    userService: UserService
    isLoggedIn: boolean = false;
    isCompanyLogin: boolean = false;
    isUserLogin: boolean = false;
    userProfile: UserProfile;   

    constructor(_router: Router,_location: Location,_authService: AuthService,_userService: UserService,_userProfile: UserProfile){ 
        this.router = _router;
        this.location = _location;
        this.authService = _authService;
        this.userService = _userService;
        this.userProfile = _userProfile;

        this.isUserLoggedIn(this.location.path());

        //On refresh
        this.router.subscribe((currentRoute) => {
            this.isUserLoggedIn(currentRoute);
        })  
    }

    isUserLoggedIn(currentRoute): void{ 
        this.authService.checkIfLoggedIn().then((response) => { 
            this.isLoggedIn = response

            if(this.isLoggedIn){
                this.isUserOrganisationOrTeacher();                 
            }   

            if(currentRoute.substring(0,14) == "socialRegister" || currentRoute == "socialRegister" || currentRoute == "home" || currentRoute == "contact" || currentRoute == "" || currentRoute == "forgotpassword" || currentRoute == "login" || currentRoute.substring(0,8) == "register"){
                this.isCompanyLogin = false;
                this.isUserLogin = false;
                this.isLoggedIn = false;
            }           
        });  
    }

    isUserOrganisationOrTeacher(): void{
        this.userService.checkIfProfileExists().then((response) => {
            this.isCompanyLogin = false;
            this.isUserLogin = false;       

            if(response){
                this.isUserLogin = true;
                this.isCompanyLogin = false;
            }else{
                this.isCompanyLogin = true; 
                this.isUserLogin = false;                   
            }
        }); 
    }       
}

bootstrap(AppComponent,[ROUTER_PROVIDERS,provide(APP_BASE_HREF,{useValue: '/'}),HTTP_PROVIDERS,AuthService,SocialService,UserService,EmailService,NotificationService,ANGULAR2_GOOGLE_MAPS_PROVIDERS]);