import { AppState, AppSuspendData, HoistModel } from '@xh/hoist/core';
/**
 * Support for Core Hoist Application state and loading.
 *
 * @internal
 */
export declare class AppStateModel extends HoistModel {
    xhImpl: boolean;
    state: AppState;
    lastActivityMs: number;
    suspendData: AppSuspendData;
    accessDeniedMessage: string;
    /**
     * Timestamp when the app first started loading, prior to even JS download/eval.
     * Read from timestamp set on window within index.html.
     */
    readonly loadStarted: number;
    readonly timings: Record<AppState, number>;
    private lastStateChangeTime;
    constructor();
    setAppState(nextState: AppState): void;
    suspendApp(suspendData: AppSuspendData): void;
    checkAccess(): boolean;
    private trackLoad;
    private createActivityListeners;
    private getScreenData;
    private getWindowData;
}