import { IFrameMessage } from "./iframe-message";
/**
* Usage example
* const iframeChildService = new IFrameChildService();
* iframeChildService.onMessage(message => {
*     console.log('IFrameMessage received from parent:', message);
* });
 */
export declare class IFrameChildService {
    private messageHandlers;
    constructor();
    sendMessageToParent(message: IFrameMessage): void;
    onMessage(handler: (message: IFrameMessage) => void): void;
    private handleMessage;
}