属性 'accessToken' 在类型 'AuthCredential' 上不存在

Property 'accessToken' does not exist on type 'AuthCredential'

通过 运行 ionic serve 我得到以下错误:

Property 'accessToken' does not exist on type 'AuthCredential'.
// You can use it to access the Google API.
let token = result.credential.accessToken;

我已将我的 firebase 从 firebase: ^4.12.1 更新为 firebase: ^5.5.9

这是我的离子信息输出

Ionic:

   ionic (Ionic CLI)  : 4.1.2
   Ionic Framework    : ionic-angular 3.9.2
   @ionic/app-scripts : 3.1.9

Cordova:

   cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
   Cordova Platforms     : android 7.0.0
   Cordova Plugins       : no whitelisted plugins (19 plugins total)

System:

   NodeJS : v10.13.0 (C:\Program Files\nodejs\node.exe)
   npm    : 5.8.0
   OS     : Windows 10

这是auth.service.ts

中的方法
signInWithGoogle() {
   console.log('Sign in with google');
   return this.oauthSignIn(new firebase.auth.GoogleAuthProvider());
}

private oauthSignIn(provider: AuthProvider) {
   if (!(<any>window).cordova) {
        return this.afAuth.auth.signInWithPopup(provider).then(() => {
            this.saveUserDetails('gmail');
        });
   } else {
       return this.afAuth.auth.signInWithRedirect(provider)
           .then(() => {
              return this.afAuth.auth.getRedirectResult().then(result => {
                 // This gives you a Google Access Token.
                // You can use it to access the Google API.
                let token = result.credential.accessToken;
               // The signed-in user info.
                let result_user = result.user;

                this.saveUserDetails('gmail');

                console.log(token, result_user);
      }).catch(function (error) {
         // Handle Errors here.
         alert(error.message);
      });
   });
  }
}

为什么 AuthCredential 对象上不存在 accessToken 属性?

你需要看看AuthCredential的定义。如果它是 this one,它没有 accessToken 属性。

您需要将 AuthCredential 转换为具有 accessToken 属性 的 OAuthCredentialhttps://github.com/firebase/firebase-js-sdk/blob/master/packages/auth-types/index.d.ts#L244

错误是由于打字稿定义引起的

替换

let token = result.credential.accessToken;

let token = (<any>result).credential.accessToken;

@bojeil 的建议对我有用

firebase
      .auth()
      .signInWithPopup(this.provider)
      .then(result => {
        // This gives you a Google Access Token. You can use it to access the Google API.
        const credential = result.credential as firebase.auth.OAuthCredential;
        const token = credential.accessToken;
        // The signed-in user info.
        const user = result.user;