import type { SessionTimeoutConfig } from '../models/session-timeout-config';
import * as i0 from "@angular/core";
export declare const HEARTBEAT_INTERVAL_MS = 1500;
export declare const LEADER_TTL_MS: number;
export declare class LeaderElectionService {
    private readonly destroyRef;
    private readonly zone;
    private readonly providedConfig;
    private readonly leaderSignal;
    private readonly tabId;
    private storageKey;
    private heartbeatTimer;
    private watchdogTimer;
    private storage;
    private isDisposed;
    private abortController;
    readonly leaderId: import("@angular/core").Signal<string>;
    readonly isLeader: import("@angular/core").Signal<boolean>;
    readonly leader$: import("rxjs").Observable<string>;
    readonly isLeader$: import("rxjs").Observable<boolean>;
    constructor();
    updateConfig(config: SessionTimeoutConfig): void;
    electLeader(): void;
    stepDown(): void;
    private initialize;
    private cleanup;
    private readonly handleBeforeUnload;
    private readonly handleStorageEvent;
    private applyConfig;
    private resolveStorage;
    private startElection;
    private readLeaderRecord;
    private startWatchdog;
    private stopWatchdog;
    private startHeartbeat;
    private ensureHeartbeat;
    private stopHeartbeat;
    private touchLeaderRecord;
    static ɵfac: i0.ɵɵFactoryDeclaration<LeaderElectionService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LeaderElectionService>;
}