import { Store } from '@ngrx/store';
import { AppState } from '../app-state.interface';
import { Sandbox } from './base.sandbox';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class HistorySandbox extends Sandbox {
    protected appState$: Store<AppState>;
    constructor(appState$: Store<AppState>);
    history$: Observable<{
        [key: string]: any;
    }>;
    addOrUpdateHistory(key: string, value: any): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<HistorySandbox, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HistorySandbox>;
}