export interface IMessageTransport {
    /**
     * Sets a handler to EXCLUSIVELY listen to a topic
     *
     * This method will remove any other handler listening to this topic.
     * It's meant to be used for cases such as command handling where only
     * one handler should be called for each message.
     */
    listen(topic: string, handler: (msg: any) => void): void;
    /**
     * Sends a message that will be acknoledged and handle by a single handler
     *
     * This is meant to be used for cases such as command handling
     */
    send(topic: string, message: any): void;
    /**
     * Subscribes to a topic and receive all messages on that topic
     */
    subscribe(topic: string, handler: (type: string, msg: any) => void): void;
    /**
     * Publishes a message to all subscribers
     */
    publish(topic: string, message: any): void;
}