import { AppSharedState } from '../state.models';
import { ActionMapLayerAdd } from '../state.models.actions';
/**
 * Handles the addition of a new layer to a map's rendering layers.
 *
 * @param {AppSharedState} state - The current application state.
 * @param {ActionMapLayerAdd} action - The action containing the payload for adding a map layer.
 * @returns {AppSharedState} - The updated application state with the new layer added to the specified map.
 *
 * @throws {Error} If the payload is missing or the map with the specified key is not found.
 */
export declare const reduceHandlerMapLayerAdd: <T extends AppSharedState = AppSharedState>(state: T, action: ActionMapLayerAdd) => T;