import { Observable } from 'rxjs/Observable';
export declare type Payload = any;
export interface EventBusMessage {
    channel: string;
    payload: Payload;
}
export declare class EventBusService1 {
    listen: Observable<Payload>;
    private next;
    constructor();
    allChannels(): Observable<EventBusMessage>;
    channel(channelName: string): Observable<Payload>;
    channelEmmiter(channelName: any): (payload: any) => void;
    emit({ channel, payload }: EventBusMessage): void;
}
/**
 * Global EventEmitter
 */
export declare class EventBusService<Events = any> {
    /** Map event name to Subject  */
    private _subjects;
    /**
     *
     * @param eventName
     * @param handler
     * @returns
     */
    on(eventName: Events, handler: (data: any) => any): {
        unsubscribe: () => void;
    };
    /**
     *
     * @param eventName
     * @param data
     */
    emit(eventName: Events, data: any): void;
    /**
     * Destory all subscription and clear the map
     */
    destroy(): void;
}