person.component.ts

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

@Component({
  selector: 'person',
  template: '<h1>{{person.name}} {{person.lastname}}</h1>'
})
export class PersonComponent {

  private _person: any

  @Input()
  set person(person: any){

    if (person && person.hasOwnProperty('name')) {
      person.name=this.capitalizeFirstLetter(person.name);
    }
    this._person=person;
  }

  get person():any{

    if (this._person && this._person.hasOwnProperty('lastname')) {
      this._person.lastname=this.capitalizeFirstLetter(this._person.lastname);
    }
    return this._person;
  }


  private capitalizeFirstLetter(word: string):string {
    return word.charAt(0).toUpperCase() + word.slice(1);
  }
  

}