vue.js 및 Auth0을 사용하여 사용자가 이미 인증되어 있는 경우 로그인 페이지를 건너뛰려면 어떻게 해야 합니까?

import auth0 from 'auth0-js';
import EventEmitter from 'events';
import authConfig from '../config/auth_config.json';

const webAuth = new auth0.WebAuth({
  domain: authConfig.domain,
  redirectUri: `${window.location.origin}/callback`,
  clientID: authConfig.clientId,
  responseType: 'id_token',
  scope: 'openid profile email'
});

const localStorageKey = 'loggedIn';
const loginEvent = 'loginEvent';

class AuthService extends EventEmitter {
  idToken = null;
  profile = null;
  tokenExpiry = null;

  // Starts the user login flow
  login(customState) {
    webAuth.authorize({
      appState: customState
    });
  }

  // Handles the callback request from Auth0
  handleAuthentication() {
    return new Promise((resolve, reject) => {
      webAuth.parseHash((err, authResult) => {
        if (err) {
          reject(err);
        } else {
          this.localLogin(authResult);
          resolve(authResult.idToken);
        }
      });
    });
  }

  localLogin(authResult) {
    // console.log(authResult); TODO-me: Handle this
    this.idToken = authResult.idToken;
    this.profile = authResult.idTokenPayload;

    // Convert the JWT expiry time from seconds to milliseconds
    this.tokenExpiry = new Date(this.profile.exp * 1000);

    localStorage.setItem(localStorageKey, 'true');

    this.emit(loginEvent, {
      loggedIn: true,
      profile: authResult.idTokenPayload,
      state: authResult.appState || {}
    });
  }

  renewTokens() {
    return new Promise((resolve, reject) => {
      if (localStorage.getItem(localStorageKey) !== "true") {
        return reject("Not logged in");
      }``;

      webAuth.checkSession({}, (err, authResult) => {
        if (err) {
          reject(err);
        } else {
          this.localLogin(authResult);
          resolve(authResult);
        }
      });
    });
  }

  logOut() {
    localStorage.removeItem(localStorageKey);

    this.idToken = null;
    this.tokenExpiry = null;
    this.profile = null;

    webAuth.logout({
      returnTo: window.location.origin
    });

    this.emit(loginEvent, { loggedIn: false });
  }

  isAuthenticated() {
     console.log('In tokenExp is:');
     console.log(this.tokenExpiry); //THIS returns null when /home -> /
    return (
      Date.now() < this.tokenExpiry &&
      localStorage.getItem(localStorageKey) === 'true'
    );
  }
}

export default new AuthService();