离子火力点发送电子邮件验证(Ionic firebase send email verification)

 我试图在注册时向用户发送电子邮件验证。 用户被添加到Firebase，但不发送电子邮件。 我将错误记录到控制台，它说 
 
 
 
 无法读取未定义的属性'sendEmailVerification' 
 
 
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { User } from "../../models/user";
import { AngularFireAuth } from "angularfire2/auth";
import * as firebase from 'firebase';


@IonicPage()
@Component({
  selector: 'page-register',
  templateUrl: 'register.html',
})
export class RegisterPage {

  user = {} as User

  constructor(private afAuth: AngularFireAuth,
    public navCtrl: NavController, public navParams: NavParams) {
  }

  async register(user: User) {
     try {
       const result = await this.afAuth.auth.createUserWithEmailAndPassword(user.email, user.password)
       .then(res => {
         var auth = firebase.auth();
         this.auth.sendEmailVerification(user.email)
         this.navCtrl.setRoot('LoginPage');
       }
     }
     catch (e) {
       console.log(e);
     }
   }

}

I'm trying to send an email verification to the user when they sign up. The user gets added to firebase but the email is not sent. I logged the error to the console and it says 
 
 
 
Cannot read property 'sendEmailVerification' of undefined
 
 
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { User } from "../../models/user";
import { AngularFireAuth } from "angularfire2/auth";
import * as firebase from 'firebase';


@IonicPage()
@Component({
  selector: 'page-register',
  templateUrl: 'register.html',
})
export class RegisterPage {

  user = {} as User

  constructor(private afAuth: AngularFireAuth,
    public navCtrl: NavController, public navParams: NavParams) {
  }

  async register(user: User) {
     try {
       const result = await this.afAuth.auth.createUserWithEmailAndPassword(user.email, user.password)
       .then(res => {
         var auth = firebase.auth();
         this.auth.sendEmailVerification(user.email)
         this.navCtrl.setRoot('LoginPage');
       }
     }
     catch (e) {
       console.log(e);
     }
   }

}

原文：https://stackoverflow.com/questions/48294139