/**
 * 通知对象的活动目标接口
 */
interface ActivityTarget {
    type?: string;
    id?: string;
}
/**
 * 通知对象的活动元数据接口
 */
interface ActivityMeta {
    id?: string;
}
/**
 * 活动对象接口
 */
interface Activity {
    type?: string;
    actor?: string;
    target?: ActivityTarget;
    meta?: ActivityMeta;
}
/**
 * 通知对象接口
 */
interface Notification {
    activity?: Activity;
    actorInfo?: any;
    severity?: string;
    title?: string;
    description?: string;
    items?: Notification[];
}
/**
 * 合并相邻的通知数据
 * 合并条件:
 * 1. 数据必须是相邻的
 * 2. activity.type 必须相同且不为 null 或 undefined
 * 3. 如果存在target对象，activity.target.type和activity.target.id都必须相同
 * 4. 如果相邻数据的 activity.type 相同但没有 activity.target 对象，则需要合并
 *
 * @param {Notification[]} notifications - 需要处理的通知数据
 * @returns {Notification[]} - 合并后的通知数组
 */
export declare const mergeAdjacentNotifications: (notifications: Notification[]) => Notification[];
/**
 * 判断通知是否包含activity
 * @param {Notification} notification - 通知对象
 * @returns {boolean} - 是否包含activity
 */
export declare const isIncludeActivity: (notification: Notification) => boolean;
/**
 * 是否可以自动已读
 */
export declare const canAutoRead: (notification: Notification | null | undefined) => boolean;
/**
 * 获取 activity 的链接
 * 链接的来源有两种
 * 1. activity.meta.id
 * 2. activity.target.id
 * @param {Activity} activity - 活动对象
 * @returns {Object | null} - 活动的链接
 */
export declare const getActivityLink: (activity: Activity | null | undefined) => {
    metaLink?: string | null;
    targetLink?: string | null;
} | null;
export declare const toClickableSpan: (str: string, locale: string, isHighLight?: boolean) => Promise<string>;
export declare const sanitize: (innerHtml: string) => string;
export {};
