import { Extent as OlExtent } from 'ol/extent';
import OlLayer from 'ol/layer/Layer';
import { WmsLayer, WmtsLayer } from '../typeUtils/typeUtils';
import { InkmapLayer } from './InkmapTypes';
/**
 * Helper class for layer interaction.
 *
 * @class LayerUtil
 */
declare class LayerUtil {
    /**
     * Returns the configured URL of the given layer.
     *
     * @param { WmsLayer | WmtsLayer } layer The layer
     *   to get the URL from.
     * @returns {string} The layer URL.
     */
    static getLayerUrl: (layer: WmsLayer | WmtsLayer) => string;
    /**
     * Returns the extent of the given layer as defined in the
     * appropriate Capabilities document.
     *
     * @param {WmsLayer} layer
     * @param {RequestInit} fetchOpts Optional fetch options to make use of
     *                                while requesting the Capabilities.
     * @returns {Promise<[number, number, number, number]>} The extent of the layer.
     */
    static getExtentForLayer(layer: WmsLayer, fetchOpts?: RequestInit): Promise<OlExtent>;
    /**
     * Converts a given OpenLayers layer to an inkmap layer spec.
     *
     */
    static mapOlLayerToInkmap(olLayer: OlLayer): Promise<InkmapLayer>;
    /**
     * Returns all attributions as text joined by a separator.
     *
     * @param {OlLayer} layer The layer to get the attributions from.
     * @param {string} separator The separator separating multiple attributions.
     * @param {boolean} removeDuplicates Whether to remove duplicated attribution
     * strings or not.
     * @returns {string} The attributions.
     */
    static getLayerAttributionsText: (layer: OlLayer, separator?: string, removeDuplicates?: boolean) => string;
}
export default LayerUtil;