export declare type Message = {
    title: string;
    message?: string;
};
export declare class EventsStatusListener {
    private static instance;
    private constructor();
    private onSuccessListeners;
    private onErrorListeners;
    static getInstance(): EventsStatusListener;
    addOnSuccessListener: (listener: (message: Message) => void) => void;
    removeOnSuccessListener: (listener: (message: Message) => void) => void;
    removeOnErrorListener: (listener: (message: Message) => void) => void;
    addOnErrorListener: (listener: (message: Message) => void) => void;
    publishSuccessMessage: (message: Message) => void;
    publishErrorMessage: (message: Message) => void;
}