import { AppSharedState } from '../state.models';
import { OneOfStateActions } from '../state.models.actions';
/**
 * Handles the addition of a new map to the application state.
 *
 * @template T - The type of the application state, extending `AppSharedState`.
 * @param {T} state - The current application state.
 * @param {OneOfStateActions} action - The action containing the payload with the new map to be added.
 * @returns {T} - The updated application state with the new map added, or the original state if the map already exists.
 */
export declare const reduceHandlerMapAdd: <T extends AppSharedState = AppSharedState>(state: T, action: OneOfStateActions) => T;