Angularfire2 找不到模块"Firebase/App"

Question

app.component ：

import { AngularFireModule } from '@angular/fire';
import { AngularFirestoreModule } from 'angularfire2/firestore';
import { RoomComponent } from './component/room/room.component';
import { AngularFireAuth } from '@angular/fire/auth';
import { FirebaseService } from "./service/firebase.service";
import { AngularFireAuthModule } from 'angularfire2/auth';

imports: [
BrowserModule,
AngularFireModule.initializeApp(firebaseconfig),
AngularFirestoreModule
],
providers: [
FirebaseService,
{
provide: PERFECT_SCROLLBAR_CONFIG,
useValue: DEFAULT_PERFECT_SCROLLBAR_CONFIG
},
AngularFireAuth
],

包.json 文件 ：

{
"dependencies": {
"@angular/animations": "^5.2.11",
"@angular/cdk": "^5.2.4",
"@angular/common": "^5.2.0",
"@angular/compiler": "^5.2.0",
"@angular/core": "^5.2.0",
"@angular/forms": "^5.2.0",
"@angular/http": "^5.2.0",
"@angular/material": "^5.2.4",
"@angular/platform-browser": "^5.2.0",
"@angular/platform-browser-dynamic": "^5.2.0",
"@angular/router": "^5.2.0",
"angularfire2": "^5.0.1",
"core-js": "^2.4.1",
"dateformat": "^3.0.3",
"firebase": "^5.5.1",
"rxjs": "^6.3.2",
"rxjs-compat": "^6.3.2",
"zone.js": "^0.8.19"
},
"devDependencies": {
"@angular/cli": "~1.7.4",
"@angular/compiler-cli": "^5.2.0",
"@angular/language-service": "^5.2.0",
"ts-node": "~4.1.0",
"tslint": "~5.9.1",
"typescript": "~2.5.3"
}
}

在服务中不起作用的导入：

import { AngularFirestore, AngularFirestoreCollection, 
AngularFirestoreDocument } from 'angularfire2/firestore';
import { AngularFireAuth } from '@angular/fire/auth';
import { auth } from 'firebase/app'
import { Observable } from 'rxjs';

我只包含可能与错误有关的依赖项，但如果我错过了什么，请告诉我。

我已经尝试了多个版本。这确实有效，但它有一个错误。问题出在导入 { auth } 中，它允许我登录到 Firebase。我不知道问题出在哪里。有时它可以编译，有时不会。这是我迄今为止使用的唯一版本组合，有时即使编译错误也会出错。其他版本只会破坏其他导入。

仅当我暂时删除身份验证导入然后将其放回并保存时，该项目才会编译。

Answer 1

npm install firebase

解决了我的问题

Answer 2

使用此命令安装 Firebasenpm i @angular/fire

Answer 3

我将从大的开始，我只想说尝试删除您的node_modules文件夹，然后package-lock.json然后重新运行命令npm install。除此之外，还有一些建议...

app.component (app.module？(

您的导入和文件不一致，我看到您从angularfire2和@angular/fire导入.虽然它们实际上是一回事，但只是 Angular 团队正在迁移/迁移到@angular/fire.运行npm uninstall angularfire2然后npm i @angular/fire。最后，您应该更新您的app.component(我想您的意思是app.module(如此......

import { AngularFireModule } from '@angular/fire';
import { AngularFirestoreModule } from '@angular/fire/firestore';
import { RoomComponent } from './component/room/room.component';
import { AngularFireAuth } from '@angular/fire/auth';
import { FirebaseService } from "./service/firebase.service";
import { AngularFireAuthModule } from '@angular/fire/auth';

imports: [
BrowserModule,
AngularFireModule.initializeApp(firebaseconfig),
AngularFirestoreModule,
AngularFireAuthModule // IMPORT THE AUTH MODULE IF YOU'RE GOING TO USE IT
],
providers: [
FirebaseService,
{
provide: PERFECT_SCROLLBAR_CONFIG,
useValue: DEFAULT_PERFECT_SCROLLBAR_CONFIG
},
// AngularFireAuth (don't need/should not provide this, allow the module to set this up)
],

请注意，我希望能够看到更多代码，如果您有存储库并希望我检查一下，我可以提供额外的帮助，但希望这将是一个坚实的开始/修复。

Answer 4

在你的app.module.ts中：

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AngularFireModule } from '@angular/fire';
import { AngularFireDatabaseModule } from '@angular/fire/database';
import { AppComponent } from './app.component';
const config = {
apiKey: "",
authDomain: "",
databaseURL: "",
storageBucket: "",
messagingSenderId: ""
};
@NgModule({
imports:      [ 
BrowserModule,
AngularFireModule.initializeApp(config),
AngularFireDatabaseModule
],
declarations: [ AppComponent ],
bootstrap:    [ AppComponent ]
})
export class AppModule { }