app.ts

export class AppComponent implements OnInit {
  zoom = 12
  center: google.maps.LatLngLiteral
  options: google.maps.MapOptions = {
    mapTypeId: 'hybrid',
    zoomControl: false,
    scrollwheel: false,
    disableDoubleClickZoom: true,
    maxZoom: 15,
    minZoom: 8,
  }

  ngOnInit() {
    navigator.geolocation.getCurrentPosition(position => {
      this.center = {
        lat: position.coords.latitude,
        lng: position.coords.longitude,
      }
    })
  }

  zoomIn() {
    if (this.zoom < this.options.maxZoom) this.zoom++
  }

  zoomOut() {
    if (this.zoom > this.options.minZoom) this.zoom--
  }
}