app-myapp/src/modules/user/guard-auth/auth.guard.ts

import { CanActivateFn } from '@angular/router';
import * as Parse from "parse";

export const authGuard: CanActivateFn = (route, state) => {
  // 检查当前本地存储中，是否有用户验证信息
  let userAuth = Parse.User.current();
  if(userAuth?.id){
    return true;
  }else{
    // 暂时存储登陆前用户所在页面
    let REDIRECT_URL = location.pathname;
    localStorage.setItem("REDIRECT_URL",REDIRECT_URL);
   
        location.href = "/user/login"
    
    return false;
  }
};