import { NotificationFeed } from '../../../../../proto/bsky_pb.js';
import { type AppviewNotificationReason, type DataplaneNotificationReason } from '../constants.js';
import type { NotificationGroup } from './grouping.js';
export declare function getMaxGroupSize(kind: AppviewNotificationReason): number;
export declare const compareNotificationGroupsNewestFirst: (left: NotificationGroup, right: NotificationGroup) => number;
export declare const canGroupNotification: (kind: DataplaneNotificationReason, feed: NotificationFeed) => boolean;
export declare const isNotificationRead: (indexedAt: string, seenAt: number | undefined) => boolean;
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