javascript - 无法链接另一个身份验证方法 - firebase auth

Question

我正在使用手机号码登录用户，然后我希望他稍后输入电子邮件和密码。 (登录后)

我正在尝试将电子邮件、密码身份验证方法链接到当前的电话身份验证方法。

但是它给了我一个错误:

Cannot read property 'link' of undefined

这里是代码:

import { firebaseAuth,fire,  messaging } from '../../config/constants';

var credential = fire.auth.EmailAuthProvider.credential(email, password);
fire.auth.currentUser.link(credential).then(function(user) {
  console.log("Account linking success", user);
}, function(error) {
  console.log("Account linking error", error);
});

在配置/常量中

import firebase from 'firebase'
require("firebase/firestore");
const config = {
  apiKey: "AIzxxxxxxxxxxxxxxxxxxKXI",
    authDomain: "payxxxxxxxxxxxxja1.firebaseapp.com",
    databaseURL: "https://payxxxxxxxxxxja1.firebaseio.com",
    projectId: "payxxxxxxxxxxxxja1",
    storageBucket: "payxxxxxxxxxxxja1.appspot.com",
    messagingSenderId: "281xxxxx5xxxxx6"
}

firebase.initializeApp(config)

export const fire = firebase
export const ref = firebase.database().ref()
export const firebaseAuth = firebase.auth
export const messaging = firebase.messaging();

我认为 fire.auth 或 fire.auth() 有问题

谢谢

Answer 1

从 Firebase JS 版本 4.0.0 开始，

link 已被删除，取而代之的是 linkWithCredential:https://firebase.google.com/support/release-notes/js#4.0.0

还要确保当前用户已准备好:

firebase.auth().onAuthStateChange(user => {
  if (user) {
    // currentUser is not null.
  } else {
    // currentUser is null.
  }
});