在firebase数据库中存储用户时出错

Question

我遇到了这样的错误：

core.js:6014 ERROR TypeError：没有'new'就不能调用类构造函数Observable

at new FirebaseObjectObservable (firebase_object_observable.js:16)    
at FirebaseObjectFactory (firebase_object_factory.js:7)    
at AngularFireDatabase.push../node_modules/angularfire2/database/database.js.AngularFireDatabase.object (database.js:18)    
at UserService.save (user.service.ts:12)
at SafeSubscriber.next (app.component.ts:17)
at SafeSubscriber.__tryOrUnsub (Subscriber.js:185)    
at SafeSubscriber.next (Subscriber.js:124)
at Subscriber.next (Subscriber.js:72)
at Subscriber.next (Subscriber.js:49    
at Notification.observe (Notification.js:20)

import { Injectable } from '@angular/core';
import { AngularFireDatabase } from 'angularfire2/database';
import * as firebase from 'firebase';

@Injectable()
export class UserService {        
    constructor(private db: AngularFireDatabase) { }
    save(user: firebase.User){
        this.db.object('/users/' + user.uid).update({
            name:user.displayName,
            email:user.email
        });
    }
}

Answer 1

对于所有将来遇到此问题的人，请尝试将 tsconfig 文件中的 "target": "es2015" 更改为 "es5" 。它对我有用。