import type { ChatMessage } from '../../types/ChatMessage';
import type { ChatParticipant } from '../../types/ChatParticipant';
/**
 * Class name that gives the PDF renderer the same root styles as the standalone HTML document body.
 *
 * @private Internal helper shared by HTML and PDF chat exports.
 */
export declare const CHAT_HTML_EXPORT_RENDER_ROOT_CLASS_NAME = "chat-html-export-render-root";
/**
 * Builds the standalone HTML chat export document shared by HTML downloads and PDF rendering.
 *
 * @private Internal helper shared by HTML and PDF chat exports.
 */
export declare function buildChatHtml(title: string, messages: ReadonlyArray<ChatMessage>, participants: ReadonlyArray<ChatParticipant>): string;
/**
 * HTML export plugin
 *
 * @public exported from `@promptbook/components`
 */
export declare const htmlSaveFormatDefinition: {
    readonly formatName: "html";
    readonly label: "HTML";
    readonly getContent: ({ title, messages, participants }: {
        readonly title: string;
        readonly messages: readonly ChatMessage[];
        readonly participants: readonly ChatParticipant[];
    }) => string;
    readonly mimeType: "text/html";
    readonly fileExtension: "html";
};