mapMarkerConstructor Service

function mapMarkerConstructor () {
  class GoogleOverlayView {
    constructor(element, latlng) {
      this.element = element;
      this.latlng = latlng;
    }

    draw() {
      let panes = this.getPanes();
      let point = this.getProjection().fromLatLngToDivPixel(this.latlng);
      panes.overlayImage.appendChild(this.element[0]);
      if (point) {
        this.element.css('left', `${point.x}px`);
        this.element.css('top', `${point.y}px`);
      }
    }

    onRemove() {}
  }

  GoogleOverlayView.prototype = new google.maps.OverlayView();
  this.GoogleOverlayView = GoogleOverlayView;
}