import { TGeodataLayer } from '../../config_types/TGeodata';
import { TValidationResponse } from '../../config_types/TValidationResponse';
/**
 * Check if given geodata is a valid GeoJSON FeatureCollection, and that every
 * feature is only of type Polygon
 * @param {TGeodataLayer} layer
 * @returns {TValidationResponse}
 */
export declare function validate_layer_schema(layer: TGeodataLayer): TValidationResponse;