interface PostMessageBase {
    event: unknown;
}
export interface SelectorPostMessage extends PostMessageBase {
    selector?: string;
}
export interface ElementPostMessage extends PostMessageBase {
    iframe: Element;
}
type PostMessageProps = SelectorPostMessage | ElementPostMessage;
export declare const getMessageIframe: (event: MessageEvent) => HTMLIFrameElement | undefined;
export declare const postMessage: (props: PostMessageProps) => void;
export {};