import { WithEventBus } from "@fluid-topics/ft-wc-utils";
import { HistoryChangeEvent, HistoryState, HistoryStateUpdate } from "./HistoryService.models";
import { HistorySessionStorage } from "./HistorySessionStorage";
export declare class HistoryService extends WithEventBus {
    private history;
    private historyStorage;
    private windowLocation;
    static build(): HistoryService;
    private states;
    private readonly initialIndex;
    private currentIndex;
    private currentState;
    private readonly realPushState;
    private readonly realReplaceState;
    constructor(history: History, historyStorage: HistorySessionStorage, windowLocation: () => Location | URL, initDataInstantly: boolean);
    private setCurrentState;
    private installProxies;
    private initEventListeners;
    private initData;
    updateCurrentState(update?: HistoryStateUpdate): void;
    addHistoryChangeListener(listener: (event: HistoryChangeEvent) => void): void;
    removeHistoryChangeListener(listener: (event: HistoryChangeEvent) => void): void;
    currentItem(): HistoryState;
    back(): void;
    backwardItem(): HistoryState | undefined;
    backwardItemMatching(predicate: (_: HistoryState) => boolean | undefined): HistoryState | undefined;
    private previousDifferentMajorPosition;
    forward(): void;
    forwardItem(): HistoryState | undefined;
    private nextMajorPosition;
    private getHigherPositionInTheSameState;
    private buildCurrentState;
    private hasState;
    private isDifferentMajorState;
}