import type { NotificationSourceProps } from "./NotificationSourceProps";
import type { NotificationCenterValue } from "./NotificationEngineProps";
export declare const UNDO_WINDOW_MS = 6000;
export declare const DECISION_FOLD_MS = 900;
export declare const ARCHIVE_FOLD_MS = 220;
export declare const CLOCK_TICK_MS = 60000;
export type NotificationShared = Pick<NotificationCenterValue, "labels" | "format" | "now" | "categories" | "features" | "isOffline" | "appName" | "actions">;
export interface NotificationEngine {
    value: NotificationCenterValue;
    shared: NotificationShared;
    announcement: string;
}
export declare const useNotificationEngine: (source: NotificationSourceProps) => NotificationEngine;