import { Component, Input, OnChanges, SimpleChange } from '@angular/core';
 
import { Component } from '@angular/core';
 
@Component({
  selector: 'app-version-parent',
  template: `
    ‹h2›Source code version‹/h2›
    ‹button (click)="newMinor()"›New minor version‹/button›
    ‹button (click)="newMajor()"›New major version‹/button›
    ‹app-version-child [major]="major" [minor]="minor"›‹/app-version-child›
  `
})
export class VersionParentComponent {
  major = 1;
  minor = 23;
 
  newMinor() {
    this.minor++;
  }
 
  newMajor() {
    this.major++;
    this.minor = 0;
  }
}