import { z } from "zod";
import type { BlockMdxConfig } from "../types.js";
/**
 * Pure (React-free) part of the standard HTML / Tailwind block: its data schema
 * and MDX round-trip config. Shared by the React spec (`html.tsx`) and any
 * server-side / agent registry (e.g. the plan app's `plan-block-registry.ts`),
 * so importing it into a server module never pulls React in.
 *
 * This is the registry form of the plan `custom-html` block. The schema MUST
 * stay data-compatible with the `custom-html` branch of the plan
 * `planBlockSchema` (bounded `html`, optional bounded `css`, optional trimmed
 * `caption`, all rejecting full-document / script markup) so a registered block
 * still validates through the app's generic `update-block` re-validation. The
 * MDX `tag` (`HtmlBlock`) + flat `html`/`css`/`caption` attribute shape MUST
 * match the legacy `<HtmlBlock … html css caption />` encoding
 * (`plan-mdx.ts` `serializeBlock`/`parseBlock`) so stored `.mdx` round-trips
 * byte-compatibly.
 */
export interface HtmlBlockData {
    /** Bounded HTML fragment (no html/head/body/script/style document markup). */
    html: string;
    /** Optional bounded CSS, scoped into the sandboxed iframe. */
    css?: string;
    /** Optional short caption rendered under the rendered fragment. */
    caption?: string;
}
export declare const htmlSchema: z.ZodType<HtmlBlockData>;
/**
 * MDX config: `html`, `css`, and `caption` are flat attributes (no children) —
 * exactly the legacy `<HtmlBlock id … html css caption />` self-closing form.
 * Insertion order of `toAttrs` is the on-disk attribute order, so it stays
 * `html` → `css` → `caption` to match `plan-mdx.ts:serializeBlock`. `fromAttrs`
 * mirrors the legacy parse defaults (`html ?? ""`, `css`/`caption` undefined
 * when absent).
 */
export declare const htmlMdx: BlockMdxConfig<HtmlBlockData>;
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