[SOLVED] Typescript error: typescript has no properties


the script for menu.ts

import { Component, ViewChild } from '@angular/core';
import { NavController, NavParams } from 'ionic-angular';
import * as WC from "woocommerce-api";
import { HomePage } from './../home/home';
import { ProductsByCategoryPage } from '../products-by-category/products-by-category';

  selector: 'page-menu',
  templateUrl: 'menu.html',
export class Menu {

  homePage: Component;
  WooCommerce: any;
  categories: any[];
  @ViewChild('content') childNavCtrl: NavController;

  constructor(public navCtrl: NavController, public navParams: NavParams) {
    this.homePage = HomePage

Greetings. i’m new with ionic. Does anybody encounter with this error? and how would you solve it? Because the script can be run after i re-save the script. But whenever i run the ionic serve in terminal the first thing shown is this error. So i need to re-save the script every time i run the ionic serve.