interface PostMessageBase {
    event: unknown;
}
export interface SelectorPostMessage extends PostMessageBase {
    selector?: string;
}
export interface ElementPostMessage extends PostMessageBase {
    iframe: Element;
}
type PostMessageProps = SelectorPostMessage | ElementPostMessage;
/**
 * Returns the iframe element that sent a given `MessageEvent`. This is typically
 * used inside a `window.addEventListener("message", ...)` handler to identify
 * which Prismatic iframe dispatched an event, so you can pass it to
 * {@link setConfigVars} or perform other targeted operations.
 *
 * @param event - The `MessageEvent` received from `window.addEventListener("message", ...)`.
 * @returns The matching `HTMLIFrameElement`, or `undefined` if no iframe matches.
 *
 * @example
 * window.addEventListener("message", (event) => {
 *   if (event.data.event === "INSTANCE_CONFIGURATION_LOADED") {
 *     const iframe = prismatic.getMessageIframe(event);
 *     if (iframe) {
 *       prismatic.setConfigVars({
 *         iframe,
 *         configVars: { "My Config Var": { value: "preset-value" } },
 *       });
 *     }
 *   }
 * });
 *
 * @see {@link https://prismatic.io/docs/embed/marketplace/ | Embedding the Marketplace}
 */
export declare const getMessageIframe: (event: MessageEvent) => HTMLIFrameElement | undefined;
export declare const postMessage: (props: PostMessageProps) => void;
export {};