Javascript 有没有办法使用ngModule中的可注入服务来初始化angular 4中的firebase应用程序？

我正在应用程序中使用firebase。firebase配置存储在环境文件中

export const environment = {
  production: false,
  firebase: {
     apiKey: "api-key",
     authDomain: "project-id.firebaseapp.com",
     databaseURL: "https://project-id.firebaseio.com",
     projectId: "project-id",
     storageBucket: "project-id.appspot.com",
     messagingSenderId: "sender-id",
     appID: "app-id",
  }
};

我用这个配置初始化了firebase应用程序

import { environment } from '../../../environments/environment';
import { AngularFireModule } from 'angularfire2';

@NgModule({
  imports: [
    AngularFireModule.initializeApp(environment.firebase),
    AngularFireDatabaseModule,
  ],
  declarations: [],
  providers: [],
  entryComponents: [],
})
export class InboxModule {}

到目前为止，一切顺利。但我想根据品牌从API调用中获取firebase配置，并根据响应初始化应用程序

我编写了一个可注入服务，用于存储配置

import { Injectable } from '@angular/core';

@Injectable()
export class FirebaseService {
  private _firebaseConfig = null;

  constructor() {}

  get firebaseConfig() {
    return this._firebaseConfig;
  }

  set firebaseConfig(val) {
    this._firebaseConfig = val;
  }
}

但我无法在NGM模块中使用它

import { environment } from '../../../environments/environment';
import { AngularFireModule } from 'angularfire2';
import { FirebaseService } from '../services/firebase.service';

@NgModule({
  imports: [
    AngularFireModule.initializeApp(environment.firebase),
    AngularFireDatabaseModule,
  ],
  declarations: [],
  providers: [],
  entryComponents: [],
})
export class InboxModule {
  constructor(private firebaseService: FirebaseService) {
   AngularFireModule.initializeApp(this.firebaseService.firebaseConfig);
  }
}

我得到了这个错误

Error: No provider for InjectionToken FirebaseAppConfigToken!

这是因为没有正确初始化应用程序

export class InboxModule {
  constructor(private firebaseService: FirebaseService) {
   console.log(this.firebaseService.firebaseConfig) // Works
   // Unable to initialize the App though.
   AngularFireModule.initializeApp(this.firebaseService.firebaseConfig);
  }
}

我还缺什么吗？或者任何其他方法来解决这个用例