testapp/src/app/tab2/product/product.page.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-product',
  templateUrl: './product.page.html',
  styleUrls: ['./product.page.scss'],
})
export class ProductPage implements OnInit {

  constructor() { }

  ngOnInit() {
  }

}