import { Message } from 'primeng/primeng';
/**
 * ng-packagr构建的问题, 把primeng中messageService的源码copy了一份
 */
export declare class MessageService {
    private messageSource;
    messageObserver: import("rxjs/internal/Observable").Observable<Message | Message[]>;
    add(message: Message): void;
    addAll(messages: Message[]): void;
    clear(): void;
}