import { Clock } from "../util/TimeUtil";
import { LifecycleChangeListener } from "./LifecycleChangeListener";
export declare class LifecycleManager {
    private readonly clock;
    private readonly listeners;
    private _initialized;
    constructor(clock?: Clock);
    install(browserName?: string | null): void;
    addListener(listener: LifecycleChangeListener): void;
    initialize(): void;
    private changeLifecycle;
    private publish;
    private static isSafariBrowser;
}