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未定义不是对象(评估“ type.parameters”)

[英]Undefined is not an object (evaluating 'type.parameters')

我正在按照本教程进行操作: https : //javebratt.com/angularfire2-email-auth/ ,但出现一个奇怪的错误。

我正在执行登录页面,并且已经实现了这两个文件

登录名

import {
  NavController,
  LoadingController,
  AlertController
} from 'ionic-angular';
import { Component } from '@angular/core';
import { FormBuilder, Validators } from '@angular/forms';
import { AuthData } from '../../providers/auth-data';

import { Page1 } from '../../pages/page1/page1';
import { SignupPage } from '../../pages/signup/signup';
import { ResetPasswordPage } from '../../pages/reset-password/reset-password';

import { EmailValidator } from '../../validators/email';


/*
  Generated class for the Login page.

  See http://ionicframework.com/docs/v2/components/#navigation for more info on
  Ionic pages and navigation.
*/
@Component({
  selector: 'page-login',
  templateUrl: 'login.html'
})
export class LoginPage {
  public loginForm: any;
  emailChanged: boolean = false;
  passwordChanged: boolean = false;
  submitAttempt: boolean = false;
  public loading: any;

  constructor(public nav: NavController, public authData: AuthData,
public formBuilder: FormBuilder, public alertCtrl: AlertController,
public loadingCtrl: LoadingController) {
    this.loginForm = formBuilder.group({
      email: ['', Validators.compose([Validators.required, 
        EmailValidator.isValid])],
      password: ['', Validators.compose([Validators.minLength(6), 
      Validators.required])]
    });
  }


  goToResetPassword(){
    this.nav.push(ResetPasswordPage);
  }

  createAccount(){
    this.nav.push(SignupPage);
  }

  ionViewDidLoad() {
    console.log('Hello LoginPage Page');
  }

  elementChanged(input){
    let field = input.inputControl.name;
    this[field + "Changed"] = true;
  }

  loginUser(){
      this.submitAttempt = true;

      if (!this.loginForm.valid){
        console.log(this.loginForm.value);
      } else {
        this.authData.loginUser(this.loginForm.value.email, 
          this.loginForm.value.password).then( authData => {
            this.nav.setRoot(Page1);
      }, error => {
        this.loading.dismiss().then( () => {
          let alert = this.alertCtrl.create({
            message: error.message,
            buttons: [
            {
              text: "Ok",
              role: 'cancel'
            }
            ]
          });
        alert.present();
        });
      });

      this.loading = this.loadingCtrl.create({
        dismissOnPageChange: true,
      });
      this.loading.present();
      }
  }

}

和auth-data.ts

import { Injectable } from '@angular/core';
import 'rxjs/add/operator/map';

import { AngularFire } from 'angularfire2';


@Injectable()
export class AuthData {
  fireAuth: any;
  constructor(public af:AngularFire) {
    console.log('Hello AuthData Provider');
    af.auth.subscribe(user => {
        if(user){
            this.fireAuth = user.auth;
            console.log(user);
        }
    })
  }
  loginUser(newEmail: string, newPassword: string): any {
    return this.af.auth.login({ email: newEmail, password: newPassword });
  }

  resetPassword(email: string): any {
    return firebase.auth().sendPasswordResetEmail(email);
  }

  logoutUser(): any {
    return this.af.auth.logout();
  }

  signupUser(newEmail: string, newPassword: string): any {
    return this.af.auth.createUser({ email: newEmail, password: newPassword });
  }
}

但是当我做“离子服务”时,我通过login.ts得到了以下奇怪的错误

类型“ AuthData”上不存在属性“ loginUser”

这个loginUser函数位于我的auth-data.ts中,所以我不明白它的含义。

我的猜测是永远不会启动“ this.authData”,但是即使我在构造函数中添加this.authData = authData ,它也不会改变任何东西。 (这也说明我不明白它是如何启动的)

有谁知道为什么我得到这个loginUser错误?

非常感谢

编辑:

感谢您在下面提供的一项建议,该错误似乎已经消失,并且这里出现了一个新错误(即使现在说实话,即使我还原更改,但仍然收到新错误,我都很困惑)

现在我在Safari中遇到的错误是TypeError:undefined不是一个对象(正在评估'type.parameters'),而在Firefox中:TypeError:type是undefined [En savoir plus]

Firefox控制台给了我

ReflectionCapabilitieshttp:// localhost:8100 / build / main.js:45824:1 Reflectorhttp:// localhost:8100 / build / main.js:45964:16 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25506: 38 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25471:21 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25357:51映射自托管的CompileMetadataResolverhttp:// localhost:8100 / build / main .js:25356:65 RuntimeCompilerhttp:// localhost:8100 / build / main.js:40363:24 RuntimeCompilercompileModuleAndComponents http:// localhost:8100 / build / main.js:40301:32 RuntimeCompilerhttp:// localhost:8100 / build /main.js:40292:16 PlatformRefbootstrapModuleWithZone http:// localhost:8100 / build / main.js:27765:16 PlatformRefhttp:// localhost:8100 / build / main.js:27747:16 http:// localhost:8100 /build/main.js:96568:1 webpack_require http:// localhost:8100 / build / main.js:20:12 http:// localhost:8100 / build / main.js:66:18

我很困惑,必须错误地启动某些内容,但错误堆栈并不能真正帮助您...

this.authData.loginUser(this.loginForm.value.email, 
      this.loginForm.value.password)

在这里您不正确地访问表单参数。 loginUser函数需要2个字符串参数。

尝试:

this.loginForm.controls["email"].value
this.loginForm.controls["password"].value

编辑:对于第二个错误,我猜这是问题所在:

 resetPassword(email: string): any {
    return firebase.auth().sendPasswordResetEmail(email);
  }

我看不到文件中任何地方设置的firebase对象。

我的猜测是永远不会启动“ this.authData”,但是即使我在构造函数中添加this.authData = authData,它也不会改变任何东西。 (这也说明我不明白它是如何启动的)

您不需要这样做,因为角度喷射器负责提供程序的初始化。 您可以在此处了解更多信息

关于您的问题,您是否按照教程中所述在应用程序根模块中导入并注册了提供程序?

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