import { type ExternalLinksOptions } from "../remark-external-links.js";
export type SerializeToHtmlOptions = {
    /**
     * When true, embed diff-related hints to optimize downstream HTML diff rendering.
     *
     * Can be used with https://html-diff.lix.dev/
     *
     * @default false.
     */
    diffHints?: boolean;
    /**
     * When enabled, external links open in a new tab and get a safe rel.
     *
     * `true` applies defaults to all absolute http(s) links (treated as external).
     * Mirrors the `parse()` option.
     *
     * @default false
     */
    externalLinks?: boolean | ExternalLinksOptions;
};
export declare function serializeToHtml(ast: any, options?: SerializeToHtmlOptions): Promise<string>;
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