export declare class IsomorphicBroadCastChannel {
    readonly serverHref: string;
    readonly eventName: string;
    static hosts: {
        [serverHref: string]: {
            events: {
                [eventName: string]: IsomorphicBroadCastChannel;
            };
        };
    };
    static for(eventName: string, serverHref: string): IsomorphicBroadCastChannel;
    private callbacks;
    set onmessage(callback: (a: MessageEvent) => any);
    private sub;
    private subscribtion;
    private constructor();
    postMessage(data: any): void;
    close(): void;
}