fix(imports): add firebase imports to all places that reference firebase namespace

Fixes angular#525

Author: jeffbcross

src/angularfire2.spec.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import {
   TestBed,
   inject

src/angularfire2.ts

@@ -1,4 +1,4 @@
-import { initializeApp } from 'firebase';
+import * as firebase from 'firebase';
 import * as utils from './utils';
 import { FirebaseAppConfig } from './interfaces';
 import { AuthConfiguration } from './auth';
@@ -49,7 +49,7 @@ export class AngularFire {
 }
 
 export function _getFirebase(config: FirebaseAppConfig): firebase.app.App {
-  return initializeApp(config);
+  return firebase.initializeApp(config);
 }
 
 export function _getWindowLocation(){

src/auth/auth.spec.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import { auth, initializeApp } from 'firebase';
 import { ReflectiveInjector, Provider } from '@angular/core';
 import { Observable } from 'rxjs/Observable'

src/auth/auth.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import { Provider, Inject, Injectable, Optional } from '@angular/core';
 import { Observable } from 'rxjs/Observable';
 import { Observer } from 'rxjs/Observer';

src/auth/auth_backend.spec.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import {
   authDataToAuthState,
   AuthProviders,

src/auth/auth_backend.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import { Observable } from 'rxjs/Observable';
 
 export abstract class AuthBackend {

src/auth/firebase_sdk_auth_backend.ts

@@ -1,9 +1,9 @@
+import * as firebase from 'firebase';
 import { Injectable, Inject } from '@angular/core';
 import { Observable } from 'rxjs/Observable';
 import { Observer } from 'rxjs/Observer';
 import { FirebaseApp } from '../tokens';
 import { isPresent, ZoneScheduler } from '../utils';
-import { auth } from 'firebase';
 import {
   authDataToAuthState,
   AuthBackend,
@@ -18,7 +18,7 @@ const {
   GithubAuthProvider,
   GoogleAuthProvider,
   TwitterAuthProvider
-} = auth;
+} = firebase.auth;
 
 import { map } from 'rxjs/operator/map';
 import { fromPromise } from 'rxjs/observable/fromPromise';

src/database/database.ts

@@ -1,3 +1,4 @@
+import * as firebase from 'firebase';
 import { Inject, Injectable } from '@angular/core';
 import { FirebaseApp, FirebaseConfig } from '../tokens';
 import { FirebaseAppConfig } from '../angularfire2';

src/database/firebase_list_factory.spec.ts

@@ -1,4 +1,4 @@
-declare var require: any;
+import * as firebase from 'firebase';
 import {
   FirebaseListFactory,
   FirebaseListObservable,

src/database/firebase_list_factory.ts

@@ -1,7 +1,7 @@
+import * as firebase from 'firebase';
 import { AFUnwrappedDataSnapshot } from '../interfaces';
 import { FirebaseListObservable } from './firebase_list_observable';
 import { Observer } from 'rxjs/Observer';
-import { database } from 'firebase';
 import { observeQuery } from './query_observable';
 import { Query, FirebaseListFactoryOpts } from '../interfaces';
 import * as utils from '../utils';
@@ -17,7 +17,7 @@ export function FirebaseListFactory (
   let ref: firebase.database.Reference | firebase.database.Query;
 
   utils.checkForUrlOrFirebaseRef(absoluteUrlOrDbRef, {
-    isUrl: () => ref = database().refFromURL(<string>absoluteUrlOrDbRef),
+    isUrl: () => ref = firebase.database().refFromURL(<string>absoluteUrlOrDbRef),
     isRef: () => ref = <firebase.database.Reference>absoluteUrlOrDbRef,
     isQuery: () => ref = <firebase.database.Query>absoluteUrlOrDbRef,
   });