如何在angular8中获取angularx-social-login的刷新令牌

npm install angularx-social-login

import { NgModule } from '@angular/core';
import {
  SocialLoginModule,
  AuthServiceConfig,
  GoogleLoginProvider
} from 'angularx-social-login';

const config = new AuthServiceConfig([
  {
    id: GoogleLoginProvider.PROVIDER_ID,
    provider: new GoogleLoginProvider('Your-Google-Client-Id')
  }
]);

export function provideConfig() {
  return config;
}

@NgModule({
  imports: [
    ...
    SocialLoginModule
  ],
  providers: [
    {
      provide: AuthServiceConfig,
      useFactory: provideConfig
    }
  ],
  ...
})
export class AppModule { }

import { Component, OnInit } from '@angular/core';
import { AuthService, GoogleLoginProvider } from 'angularx-social-login';

@Component({
  ...
})
export class YourComponent implements OnInit {

  constructor(private authService: AuthService) { }

  ngOnInit(): void {
    this.authService.authState.subscribe(user => {
      const refreshToken = user.authToken;
      console.log('Refresh Token:', refreshToken);
    });
  }

  signInWithGoogle(): void {
    this.authService.signIn(GoogleLoginProvider.PROVIDER_ID);
  }

  signOut(): void {
    this.authService.signOut();
  }
}