Question

我正在使用angular4项目，因为我无法进行编译，因为遇到了有关angularfire2的错误。有人可以帮帮我。

ERROR in node_modules/angularfire2/firebase.app.module.d.ts(5,45): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(8,17): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(9,21): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(10,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(11,20): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(13,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(8,43): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(9,46): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(9,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,49): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,95): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,140): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,182): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,49): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,94): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,130): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(8,54): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(8,96): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(10,19): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(12,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(12,69): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(13,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(14,25): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(15,30): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(16,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(17,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(8,10): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(9,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(10,28): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(14,42): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/firestore.d.ts(9,55): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/firestore.d.ts(12,25): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(4,11): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(5,14): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(14,37): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(14,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(16,10): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(17,12): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(6,41): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(6,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(7,41): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(7,98): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(8,48): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(8,93): error TS2503: Cannot find namespace 'firebase'.

ERROR in node_modules/angularfire2/firebase.app.module.d.ts(5,45): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(8,17): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(9,21): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(10,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(11,20): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firebase.app.module.d.ts(13,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(8,43): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(9,46): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(9,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,49): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,95): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,140): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(10,182): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,49): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,94): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/changes.d.ts(11,130): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(8,54): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(8,96): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(10,19): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(12,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(12,69): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(13,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(14,25): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(15,30): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(16,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/collection/collection.d.ts(17,27): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(8,10): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(9,22): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(10,28): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/document/document.d.ts(14,42): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/firestore.d.ts(9,55): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/firestore.d.ts(12,25): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(4,11): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(5,14): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(14,37): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(14,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(16,10): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/interfaces.d.ts(17,12): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(6,41): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(6,80): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(7,41): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(7,98): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(8,48): error TS2503: Cannot find namespace 'firebase'.
node_modules/angularfire2/firestore/observable/fromRef.d.ts(8,93): error TS2503: Cannot find namespace 'firebase'.

Answer 1

如果您的版本4.8.1：

，请返回firebase 4.8.0

在package.json中，从“firebase”中删除^：“^ 4.8.1”。然后通过将4.8.1更改为4.8.0将Firebase从4.8.1降级到4.8.0。最终结果应如下所示：“firebase”：“4.8.0”。
在项目根目录中运行npm update。 NPM将为您降级Firebase。
运行服务--open以检查编译错误。应该没有。
享受！

Answer 2

使用角度4安装angularfire2：

npm install angularfire2 firebase --save

将以下代码复制到environment.ts文件

export const environment = {
production: false,
firebase: {
apiKey: 'xxx',
authDomain: 'xxx.firebaseapp.com',
databaseURL: 'https://xxx.firebaseio.com',
projectId: 'xxx',
storageBucket: 'xxx.appspot.com',
messagingSenderId: 'xxx'
}
};

从angularfire2和环境导入AngularFireModule，AngularFireDatabaseModule和AngularFireAuthModule以获取Firebase设置。

import { AngularFireModule } from 'angularfire2';
import { AngularFireDatabaseModule } from 'angularfire2/database';
import { AngularFireAuthModule } from 'angularfire2/auth';
import { environment } from 'environments/environment';

然后在NgModule中添加模块。可以使用“initialiazeApp”
自定义Firebase名称

@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
AngularFireModule.initializeApp(environment.firebase, 'letslearn-dev'),
AngularFireDatabaseModule,
AngularFireAuthModule
],
bootstrap: [AppComponent]
})
export class AppModule { }

创建AuthService以管理身份验证

import { AngularFireAuth } from 'angularfire2/auth';
import * as firebase from 'firebase/app';
import { Observable } from 'rxjs/Observable';
export class AuthService {
private authState: Observable<firebase.User>
private currentUser: firebase.User = null;
constructor(public afAuth: AngularFireAuth) {
this.authState = this.afAuth.authState;
this.authState.subscribe(user => {
  if (user) {
    this.currentUser = user;
  } else {
    this.currentUser = null;
  }
});
}
getAuthState() {
return this.authState;
}
}

在您的应用组件中注入Firebase Auth服务。

import { AuthService } from './shared/auth.service';
export class AppComponent implements OnInit {
user = null;
constructor(
private auth: AuthService) { }
ngOnInit() {
this.auth.getAuthState().subscribe(
  (user) => this.user = user);
}
}

希望这能解决你的问题。

Angular4 angularfire2

2 个答案: