import { AppSharedState } from '../../appState/state.models';
import { PeriodWithNeighbours } from '../../models/models.metadata';
/**
 * Retrieves a list of periods associated with a given layer key.
 *
 * @param {AppSharedState} state - The application state containing periods and rendering layers.
 * @param {string | null} layerKey - The key of the layer for which periods are to be retrieved.
 * @returns {PeriodWithNeighbours[]} - An array of periods associated with the given layer key. Returns an empty array if no periods are found or if the layer key is null.
 */
export declare const getPeriodsForLayerKey: (state: AppSharedState, layerKey: string | null) => PeriodWithNeighbours[];