import type { EmbedErrorEventData } from '@luzmo/shared-embed';
export type EmbedErrorDetail = EmbedErrorEventData & {
    data: EmbedErrorEventData;
};
export declare function buildEmbedErrorDetail(errorMsg: string): EmbedErrorDetail;
/**
 * Normalize any error payload shape (postMessage, CustomEvent detail, etc.)
 * into the public `EmbedErrorEvent` detail contract.
 */
export declare function normalizeEmbedErrorDetail(detail?: unknown): EmbedErrorDetail;