import { EventMessageTypeModel } from '../backend-api/index.js';
export interface UmbNotificationsEventModel {
    category: string;
    message: string;
    type: EventMessageTypeModel;
}
/**
 * Checks if an array of unknown values are all valid UmbNotificationsEventModel objects.
 * @param {Array<unknown>} notifications The array to check.
 * @returns {boolean} True if all items are valid UmbNotificationsEventModel objects.
 */
export declare function isUmbNotifications(notifications: Array<unknown>): notifications is Array<UmbNotificationsEventModel>;
export declare const UMB_NOTIFICATION_HEADER = "umb-notifications";