button.component.ts

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

@Component({
  selector: 'app-button',
  template: `
    <button>{{ text }}</button>
  `
})
export class ButtonComponent implements OnInit, AfterViewInit {
  public text: string = null;

  public ngOnInit(): void {
    console.log(`${ButtonComponent.name} ngOnInit...`);
  }

  public ngAfterViewInit(): void {
    console.log(`${ButtonComponent.name} ngAfterViewInit...`);
  }
}