React-Firebase-GoogleAuthProvider不是构造函数 [英] React - Firebase - GoogleAuthProvider is not a constructor

问题描述

我正在尝试创建一个使用使用Google登录"按钮触发signInWithPopup(provider)的React应用程序.但是，每次我调用new firebaseApp.auth.GoogleAuthProvider()时，控制台都会返回一个错误.我只是尝试console.log() result.

I am trying to create a React application that uses a "Login with Google" button to trigger signInWithPopup(provider). However each time I call new firebaseApp.auth.GoogleAuthProvider() my console returns an error. I am simply trying to console.log() the result.

未捕获的TypeError:_firebase_setup2.default.auth.GoogleAuthProvider不是构造函数

Uncaught TypeError: _firebase_setup2.default.auth.GoogleAuthProvider is not a constructor

firebase_setup.js

firebase_setup.js

import * as firebase from 'firebase';

const firebaseConfig = {
  apiKey: "AIzaSyAKlWtFZvbvuNy2qC68Xt5xzaTQVyy9l2o",
  authDomain: "doordash-ff045.firebaseapp.com",
  databaseURL: "https://doordash-ff045.firebaseio.com",
  storageBucket: "doordash-ff045.appspot.com",
};

const firebaseApp = firebase.initializeApp(firebaseConfig);

export default firebaseApp;

login.js

login.js

import React, { Component } from 'react';
import { browserHistory } from 'react-router';
import firebaseApp from '../../../services/firebase_setup';

export default class Login extends Component {

  componentDidMount() {
    firebaseApp.auth().onAuthStateChanged(user => {
      if (user) {
        console.log(user);
        browserHistory.push('/profile');
      }
    });
  }

  authenticate() {
    var provider = new firebaseApp.auth.GoogleAuthProvider();
    provider.addScope('profile');
    provider.addScope('email');

    firebaseApp.auth().signInWithPopup(provider)
      .then(result => {
        console.log(result);
      })
  }

  render() {
    return (
      <div>
        <h1>Login Page</h1>
        <button onClick={this.authenticate.bind(this)}>
          Login with Google
        </button>
      </div>

    );
  }
}

如果您对此问题有任何见解，我将不胜感激！我查阅了许多教程，但是在尝试声明provider变量时总是遇到相同的错误.

I would appreciate any insight into this issue! I have looked up numerous tutorials but always run into the same error when attempting to declare the provider variable.

推荐答案

您正在将名称空间与实例混合:firebaseApp只是用于配置数据的容器.这不是您创建提供程序实例的方式.

You're mixing namespaces with instance: the firebaseApp is just a container for configuration data. It is not how you create a provider instance.

正确的方法是:

var provider = new firebase.auth.GoogleAuthProvider();

这篇关于React-Firebase-GoogleAuthProvider不是构造函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！