import { FilterTab, NotificationItem, SortBy, TypeFilter } from './types';
export declare const PRIORITY_CONFIG: Record<string, {
    color: string;
    bgColor: string;
    label: string;
    order: number;
}>;
export declare const TYPE_CONFIG: Record<string, {
    icon: string;
    label: string;
}>;
export declare const FILTER_TABS: {
    value: FilterTab;
    label: string;
}[];
export declare const TYPE_FILTERS: {
    value: TypeFilter;
    label: string;
}[];
export declare function formatRelativeTime(dateStr: string): string;
export declare function sortNotifications(items: NotificationItem[], by: SortBy): NotificationItem[];
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