declare namespace google.maps {
    type MapTypeStyleFeatureType =
        | 'all'
        | 'administrative'
        | 'administrative.country'
        | 'administrative.land_parcel'
        | 'administrative.locality'
        | 'administrative.neighborhood'
        | 'administrative.province'
        | 'landscape'
        | 'landscape.man_made'
        | 'landscape.natural'
        | 'landscape.natural.landcover'
        | 'landscape.natural.terrain'
        | 'poi'
        | 'poi.attraction'
        | 'poi.business'
        | 'poi.government'
        | 'poi.medical'
        | 'poi.park'
        | 'poi.place_of_worship'
        | 'poi.school'
        | 'poi.sports_complex'
        | 'road'
        | 'road.arterial'
        | 'road.highway'
        | 'road.highway.controlled_access'
        | 'road.local'
        | 'transit'
        | 'transit.line'
        | 'transit.station'
        | 'transit.station.airport'
        | 'transit.station.bus'
        | 'transit.station.rail'
        | 'water';

    type MapTypeStyleElementType =
        | 'all'
        | 'geometry'
        | 'geometry.fill'
        | 'geometry.stroke'
        | 'labels'
        | 'labels.icon'
        | 'labels.text'
        | 'labels.text.fill'
        | 'labels.text.stroke';

    interface MapTypeStyler {
        color?: string;
        gamma?: number;
        hue?: string;
        invert_lightness?: boolean;
        lightness?: number;
        saturation?: number;
        visibility?: string;
        weight?: number;
    }
}