import { Action } from '@ngrx/store';
import { BaseRouterStoreState } from './serializers/base';
import { SerializedRouterStateSnapshot } from './serializers/default_serializer';
export declare type RouterReducerState<T extends BaseRouterStoreState = SerializedRouterStateSnapshot> = {
    state: T;
    navigationId: number;
};
export declare function routerReducer<T extends BaseRouterStoreState = SerializedRouterStateSnapshot>(state: RouterReducerState<T> | undefined, action: Action): RouterReducerState<T>;