import { AppSharedState } from '../state.models';
import { RenderingLayer } from '../../models/models.layers';
/**
 * Retrieves a rendering layer by its key from the shared application state.
 * If a style is associated with the rendering layer, its configuration is merged
 * with the datasource configuration of the rendering layer.
 *
 * @param {AppSharedState} state - The shared application state containing rendering layers.
 * @param {string} key - The key of the rendering layer to retrieve.
 * @returns {RenderingLayer | undefined} The rendering layer with merged configurations, or undefined if not found.
 */
export declare const getRenderingLayerByKey: (state: AppSharedState, key: string | undefined) => RenderingLayer | undefined;